libs:

libaxolotl: updated libaxolotl (libsignal-c) from (https://github.com/WhisperSystems/libsignal-protocol-c)
author: Gluzskiy Alexandr <sss@sss.chaoslab.ru> 2017-02-13 07:56:33 +0300
committer: Gluzskiy Alexandr <sss@sss.chaoslab.ru> 2017-02-13 09:09:08 +0300
commit: 193f645f65ad4ffdec3186e4176b23af10861199 (patch)
tree: e1b16b48ac74c5f03f99a98798e849f6dd9752cc /libs/libaxolotl
parent: 36c32a13878d3bd94e88bd9c764f1eadb05ea1ed (diff)
93 files changed, 10040 insertions, 3643 deletions
diff --git a/libs/libaxolotl/README.md b/libs/libaxolotl/README.md
index 09a954f434..a4467448e6 100644
--- a/libs/libaxolotl/README.md
+++ b/libs/libaxolotl/README.md
@@ -1,16 +1,16 @@
 # Overview
 
 This is a ratcheting forward secrecy protocol that works in synchronous and asynchronous messaging 
-environments. See the [Java library](https://github.com/whispersystems/libaxolotl-java) for more details.
+environments. See the [Java library](https://github.com/whispersystems/libsignal-protocol-java) for more details.
 
-# Building libaxolotl-c
+# Building libsignal-protocol-c
 
 ## Development host setup
 
 ### Build dependencies
 
-* [CMake](http://www.cmake.org/) 2.8.4 or higher
-* [Check *1](http://check.sourceforge.net/)
+* [CMake](https://cmake.org/) 2.8.4 or higher
+* [Check *1](https://libcheck.github.io/check/)
 * [OpenSSL *1](https://www.openssl.org/) 1.0 or higher
 * [LCOV *2](http://ltp.sourceforge.net/coverage/lcov.php)
 
@@ -22,7 +22,7 @@ Items marked with *1 are required for tests, with *2 are additionally required f
 
 ### Setting up a fresh source tree
 
-    $ cd /path/to/libaxolotl-c
+    $ cd /path/to/libsignal-protocol-c
     $ mkdir build
     $ cd build
     $ cmake -DCMAKE_BUILD_TYPE=Debug ..
@@ -30,23 +30,26 @@ Items marked with *1 are required for tests, with *2 are additionally required f
 
 ### Running the unit tests
 
-    $ cd /path/to/libaxolotl-c/build
+    $ cd /path/to/libsignal-protocol-c/build
     $ cmake -DCMAKE_BUILD_TYPE=Debug -DBUILD_TESTING=1 ..
+    $ cd tests
+    $ make
+    $ cd ..
     $ ctest
 
 ### Creating the code coverage report
 
-    $ cd /path/to/libaxolotl-c/build
+    $ cd /path/to/libsignal-protocol-c/build
     $ cmake -DCMAKE_BUILD_TYPE=Debug -DBUILD_TESTING=1 -DCOVERAGE=1 ..
     $ make coverage
 
 The generated code coverage report can be found in:
-`/path/to/libaxolotl-c/build/coverage`
+`/path/to/libsignal-protocol-c/build/coverage`
 
 ### Eclipse project setup
 
 CMake provides a tutorial on Eclipse project setup here:
-http://www.cmake.org/Wiki/CMake:Eclipse_UNIX_Tutorial
+https://cmake.org/Wiki/CMake:Eclipse_UNIX_Tutorial
 
 It is recommended to follow the more manual "Option 2," since the Eclipse
 project generator built into CMake tends to be outdated and leads you toward
@@ -54,7 +57,7 @@ a very awkward and occasionally broken project configuration.
 
 ### Protocol Buffers compiler
 
-This project uses serialization code based on [Protocol Buffers](https://code.google.com/p/protobuf/).
+This project uses serialization code based on [Protocol Buffers](https://github.com/google/protobuf).
 Since the official library does not support C, the [protobuf-c](https://github.com/protobuf-c/protobuf-c)
 generator is used instead. For the sake of convenience, the generated code and its dependencies are
 included in the source tree. The generated code can be regenerated at any time by installing the two
@@ -64,40 +67,40 @@ mentioned packages and running "make" in the "protobuf/" subdirectory.
 
 CMake toolchain files have been included from the following sources:
 
-* [iOS](https://code.google.com/p/ios-cmake/)
+* [iOS](https://code.google.com/archive/p/ios-cmake)
 * [BlackBerry 10](https://github.com/blackberry/OGRE/blob/master/src/CMake/toolchain/blackberry.toolchain.cmake)
 
-# Using libaxolotl-c
+# Using libsignal-protocol-c
 
 ## Library initialization
 
-Before using the library, a libaxolotl-c client needs to initialize a global
+Before using the library, a libsignal-protocol-c client needs to initialize a global
 context. This global context is used to provide callbacks for implementations
 of functions used across the library that need client-specific implementations.
-Refer to "axolotl.h" for detailed documentation on these functions, and the unit
+Refer to "signal_protocol.h" for detailed documentation on these functions, and the unit
 tests for example implementations.
 
-    axolotl_context *global_context;    
-    axolotl_context_create(&global_context, user_data);
-    axolotl_context_set_crypto_provider(global_context, &provider);
-    axolotl_context_set_locking_functions(global_context, lock_function, unlock_function);
+    signal_context *global_context;    
+    signal_context_create(&global_context, user_data);
+    signal_context_set_crypto_provider(global_context, &provider);
+    signal_context_set_locking_functions(global_context, lock_function, unlock_function);
 
 ## Client install time
 
-At install time, a libaxolotl-c client needs to generate its identity keys,
+At install time, a libsignal-protocol-c client needs to generate its identity keys,
 registration id, and prekeys.
 
     ratchet_identity_key_pair *identity_key_pair;
     uint32_t registration_id;
-    axolotl_key_helper_pre_key_list_node *pre_keys_head;
+    signal_protocol_key_helper_pre_key_list_node *pre_keys_head;
     session_pre_key *last_resort_key;
     session_signed_pre_key *signed_pre_key;
 
-    axolotl_key_helper_generate_identity_key_pair(&identity_key_pair, global_context);
-    axolotl_key_helper_generate_registration_id(&registration_id, 0, global_context);
-    axolotl_key_helper_generate_pre_keys(&pre_keys_head, start_id, 100, global_context);
-    axolotl_key_helper_generate_last_resort_pre_key(&last_resort_key, global_context);
-    axolotl_key_helper_generate_signed_pre_key(&signed_pre_key, identity_key_pair, 5, timestamp, global_context);
+    signal_protocol_key_helper_generate_identity_key_pair(&identity_key_pair, global_context);
+    signal_protocol_key_helper_generate_registration_id(&registration_id, 0, global_context);
+    signal_protocol_key_helper_generate_pre_keys(&pre_keys_head, start_id, 100, global_context);
+    signal_protocol_key_helper_generate_last_resort_pre_key(&last_resort_key, global_context);
+    signal_protocol_key_helper_generate_signed_pre_key(&signed_pre_key, identity_key_pair, 5, timestamp, global_context);
 
     /* Store identity_key_pair somewhere durable and safe. */
     /* Store registration_id somewhere durable and safe. */
@@ -113,9 +116,9 @@ be used as appropriate.
 
 ## Building a session
 
-A libaxolotl-c client needs to implement four data store callback interfaces:
-`axolotl_identity_key_store`, `axolotl_pre_key_store`,
-`axolotl_signed_pre_key_store`, and `axolotl_session_store`.
+A libsignal-protocol-c client needs to implement four data store callback interfaces:
+`signal_protocol_identity_key_store`, `signal_protocol_pre_key_store`,
+`signal_protocol_signed_pre_key_store`, and `signal_protocol_session_store`.
 These will manage loading and storing of identity, prekeys, signed prekeys,
 and session state.
 
@@ -124,21 +127,21 @@ all data flowing through them as opaque binary blobs. Anything necessary for
 referencing that data will be provided as separate function arguments to those
 callbacks. If it is ever necessary for clients to directly access stored data
 in terms of library data structures, they should use the accessor functions
-declared in "axolotl.h" for these data stores.
+declared in "signal_protocol.h" for these data stores.
 
 Once the callbacks for these data stores are implemented, building a session
 is fairly straightforward:
 
     /* Create the data store context, and add all the callbacks to it */
-    axolotl_store_context *store_context;
-    axolotl_store_context_create(&store_context, context);
-    axolotl_store_context_set_session_store(store_context, &session_store);
-    axolotl_store_context_set_pre_key_store(store_context, &pre_key_store);
-    axolotl_store_context_set_signed_pre_key_store(store_context, &signed_pre_key_store);
-    axolotl_store_context_set_identity_key_store(store_context, &identity_key_store);
+    signal_protocol_store_context *store_context;
+    signal_protocol_store_context_create(&store_context, context);
+    signal_protocol_store_context_set_session_store(store_context, &session_store);
+    signal_protocol_store_context_set_pre_key_store(store_context, &pre_key_store);
+    signal_protocol_store_context_set_signed_pre_key_store(store_context, &signed_pre_key_store);
+    signal_protocol_store_context_set_identity_key_store(store_context, &identity_key_store);
 
     /* Instantiate a session_builder for a recipient address. */
-    axolotl_address address = {
+    signal_protocol_address address = {
         "+14159998888", 12, 1
     };
     session_builder *builder;
@@ -155,36 +158,36 @@ is fairly straightforward:
     session_cipher_encrypt(cipher, message, message_len, &encrypted_message);
 
     /* Get the serialized content and deliver it */
-    axolotl_buffer *serialized = ciphertext_message_get_serialized(encrypted_message);
+    signal_buffer *serialized = ciphertext_message_get_serialized(encrypted_message);
     
-    deliver(axolotl_buffer_data(serialized), axolotl_buffer_len(serialized));
+    deliver(signal_buffer_data(serialized), signal_buffer_len(serialized));
 
     /* Cleanup */
-    AXOLOTL_UNREF(encrypted_message);
+    SIGNAL_UNREF(encrypted_message);
     session_cipher_free(cipher);
     session_builder_free(builder);
-    axolotl_store_context_destroy(store_context);
+    signal_protocol_store_context_destroy(store_context);
 
 The above example is simplified for the sake of clarity. All of these functions return errors
 on failure, and those errors should be checked for in real usage.
 
 ## Memory management notes
 
-For every custom data type that the libaxolotl-c library can allocate and
+For every custom data type that the libsignal-protocol-c library can allocate and
 return, a corresponding way of deallocating an instance of that data type
 is provided.
 
 The more basic and higher level data types provide a type-specific free or
-destroy function. These types include `axolotl_context`,
-`axolotl_store_context`, `axolotl_buffer`, `axolotl_buffer_list`,
-`axolotl_int_list`, `axolotl_key_helper_pre_key_list_node`, `session_builder`,
+destroy function. These types include `signal_context`,
+`signal_protocol_store_context`, `signal_buffer`, `signal_buffer_list`,
+`signal_int_list`, `signal_protocol_key_helper_pre_key_list_node`, `session_builder`,
 `session_cipher`, `group_session_builder`, `group_cipher`, and
 `fingerprint_generator`.
 
 Most of the other data types, including everything internal, use a reference
 counting mechanism. If you are going to hold onto a reference to one of these
-types, use the `AXOLOTL_REF(x)` macro to increment its count. If you are done
-with a reference, use `AXOLOTL_UNREF(x)` to decrement its count. When the count
+types, use the `SIGNAL_REF(x)` macro to increment its count. If you are done
+with a reference, use `SIGNAL_UNREF(x)` to decrement its count. When the count
 reaches 0, the type's destructor function is called.
 
 # Legal things
@@ -199,7 +202,9 @@ The form and manner of this distribution makes it eligible for export under the
 
 ## License
 
-Copyright 2015 Open Whisper Systems
+Copyright 2015-2016 Open Whisper Systems
 
 Licensed under the GPLv3: http://www.gnu.org/licenses/gpl-3.0.html
 
+Additional Permissions For Submission to Apple App Store: Provided that you are otherwise in compliance with the GPLv3 for each covered work you convey (including without limitation making the Corresponding Source available in compliance with Section 6 of the GPLv3), Open Whisper Systems also grants you the additional permission to convey through the Apple App Store non-source executable versions of the Program as incorporated into each applicable covered work as Executable Versions only under the Mozilla Public License version 2.0 (https://www.mozilla.org/en-US/MPL/2.0/).
+
diff --git a/libs/libaxolotl/libaxolotl.vcxproj b/libs/libaxolotl/libaxolotl.vcxproj
index 74f5fadc6a..d439948944 100644..100755
--- a/libs/libaxolotl/libaxolotl.vcxproj
+++ b/libs/libaxolotl/libaxolotl.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectName>libaxolotl</ProjectName>
+    <ProjectName>libsignal-c</ProjectName>
     <ProjectGuid>{620E0BE7-3763-4F35-9DBD-4770104E269C}</ProjectGuid>
   </PropertyGroup>
   <ImportGroup Label="PropertySheets">
@@ -32,7 +32,7 @@
       <DisableSpecificWarnings>4005;4127;4200;%(DisableSpecificWarnings)</DisableSpecificWarnings>
     </ClCompile>
     <Link>
-      <ModuleDefinitionFile>src/axolotl.def</ModuleDefinitionFile>
+      <ModuleDefinitionFile>src/signal.def</ModuleDefinitionFile>
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
@@ -52,4 +52,4 @@
       <PrecompiledHeader>NotUsing</PrecompiledHeader>
     </ClCompile>
   </ItemGroup>
-</Project>
+</Project>
+\ No newline at end of file
diff --git a/libs/libaxolotl/libaxolotl.vcxproj.filters b/libs/libaxolotl/libaxolotl.vcxproj.filters
index de5ad9f66c..09821e5ca4 100644..100755
--- a/libs/libaxolotl/libaxolotl.vcxproj.filters
+++ b/libs/libaxolotl/libaxolotl.vcxproj.filters
@@ -1,4 +1,3876 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(ProjectDir)..\..\build\vc.common\common.filters" />
+  <ItemGroup>
+    <ClCompile Include="src\stdafx.cxx">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="src\curve.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="src\device_consistency.c" />
+    <ClCompile Include="src\fingerprint.c" />
+    <ClCompile Include="src\FingerprintProtocol.pb-c.c" />
+    <ClCompile Include="src\group_cipher.c" />
+    <ClCompile Include="src\group_session_builder.c" />
+    <ClCompile Include="src\hkdf.c" />
+    <ClCompile Include="src\key_helper.c" />
+    <ClCompile Include="src\LocalStorageProtocol.pb-c.c" />
+    <ClCompile Include="src\protocol.c" />
+    <ClCompile Include="src\ratchet.c" />
+    <ClCompile Include="src\sender_key.c" />
+    <ClCompile Include="src\sender_key_record.c" />
+    <ClCompile Include="src\sender_key_state.c" />
+    <ClCompile Include="src\session_builder.c" />
+    <ClCompile Include="src\session_cipher.c" />
+    <ClCompile Include="src\session_pre_key.c" />
+    <ClCompile Include="src\session_record.c" />
+    <ClCompile Include="src\session_state.c" />
+    <ClCompile Include="src\signal_protocol.c" />
+    <ClCompile Include="src\vpool.c" />
+    <ClCompile Include="src\WhisperTextProtocol.pb-c.c" />
+    <ClCompile Include="src\curve.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="src\device_consistency.c" />
+    <ClCompile Include="src\fingerprint.c" />
+    <ClCompile Include="src\FingerprintProtocol.pb-c.c" />
+    <ClCompile Include="src\group_cipher.c" />
+    <ClCompile Include="src\group_session_builder.c" />
+    <ClCompile Include="src\hkdf.c" />
+    <ClCompile Include="src\key_helper.c" />
+    <ClCompile Include="src\LocalStorageProtocol.pb-c.c" />
+    <ClCompile Include="src\protocol.c" />
+    <ClCompile Include="src\ratchet.c" />
+    <ClCompile Include="src\sender_key.c" />
+    <ClCompile Include="src\sender_key_record.c" />
+    <ClCompile Include="src\sender_key_state.c" />
+    <ClCompile Include="src\session_builder.c" />
+    <ClCompile Include="src\session_cipher.c" />
+    <ClCompile Include="src\session_pre_key.c" />
+    <ClCompile Include="src\session_record.c" />
+    <ClCompile Include="src\session_state.c" />
+    <ClCompile Include="src\signal_protocol.c" />
+    <ClCompile Include="src\vpool.c" />
+    <ClCompile Include="src\WhisperTextProtocol.pb-c.c" />
+    <ClCompile Include="src\curve.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="src\device_consistency.c" />
+    <ClCompile Include="src\fingerprint.c" />
+    <ClCompile Include="src\FingerprintProtocol.pb-c.c" />
+    <ClCompile Include="src\group_cipher.c" />
+    <ClCompile Include="src\group_session_builder.c" />
+    <ClCompile Include="src\hkdf.c" />
+    <ClCompile Include="src\key_helper.c" />
+    <ClCompile Include="src\LocalStorageProtocol.pb-c.c" />
+    <ClCompile Include="src\protocol.c" />
+    <ClCompile Include="src\ratchet.c" />
+    <ClCompile Include="src\sender_key.c" />
+    <ClCompile Include="src\sender_key_record.c" />
+    <ClCompile Include="src\sender_key_state.c" />
+    <ClCompile Include="src\session_builder.c" />
+    <ClCompile Include="src\session_cipher.c" />
+    <ClCompile Include="src\session_pre_key.c" />
+    <ClCompile Include="src\session_record.c" />
+    <ClCompile Include="src\session_state.c" />
+    <ClCompile Include="src\signal_protocol.c" />
+    <ClCompile Include="src\vpool.c" />
+    <ClCompile Include="src\WhisperTextProtocol.pb-c.c" />
+    <ClCompile Include="src\curve.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="src\device_consistency.c" />
+    <ClCompile Include="src\fingerprint.c" />
+    <ClCompile Include="src\FingerprintProtocol.pb-c.c" />
+    <ClCompile Include="src\group_cipher.c" />
+    <ClCompile Include="src\group_session_builder.c" />
+    <ClCompile Include="src\hkdf.c" />
+    <ClCompile Include="src\key_helper.c" />
+    <ClCompile Include="src\LocalStorageProtocol.pb-c.c" />
+    <ClCompile Include="src\protocol.c" />
+    <ClCompile Include="src\ratchet.c" />
+    <ClCompile Include="src\sender_key.c" />
+    <ClCompile Include="src\sender_key_record.c" />
+    <ClCompile Include="src\sender_key_state.c" />
+    <ClCompile Include="src\session_builder.c" />
+    <ClCompile Include="src\session_cipher.c" />
+    <ClCompile Include="src\session_pre_key.c" />
+    <ClCompile Include="src\session_record.c" />
+    <ClCompile Include="src\session_state.c" />
+    <ClCompile Include="src\signal_protocol.c" />
+    <ClCompile Include="src\vpool.c" />
+    <ClCompile Include="src\WhisperTextProtocol.pb-c.c" />
+    <ClCompile Include="src\curve.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="src\device_consistency.c" />
+    <ClCompile Include="src\fingerprint.c" />
+    <ClCompile Include="src\FingerprintProtocol.pb-c.c" />
+    <ClCompile Include="src\group_cipher.c" />
+    <ClCompile Include="src\group_session_builder.c" />
+    <ClCompile Include="src\hkdf.c" />
+    <ClCompile Include="src\key_helper.c" />
+    <ClCompile Include="src\LocalStorageProtocol.pb-c.c" />
+    <ClCompile Include="src\protocol.c" />
+    <ClCompile Include="src\ratchet.c" />
+    <ClCompile Include="src\sender_key.c" />
+    <ClCompile Include="src\sender_key_record.c" />
+    <ClCompile Include="src\sender_key_state.c" />
+    <ClCompile Include="src\session_builder.c" />
+    <ClCompile Include="src\session_cipher.c" />
+    <ClCompile Include="src\session_pre_key.c" />
+    <ClCompile Include="src\session_record.c" />
+    <ClCompile Include="src\session_state.c" />
+    <ClCompile Include="src\signal_protocol.c" />
+    <ClCompile Include="src\vpool.c" />
+    <ClCompile Include="src\WhisperTextProtocol.pb-c.c" />
+    <ClCompile Include="src\curve.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="src\device_consistency.c" />
+    <ClCompile Include="src\fingerprint.c" />
+    <ClCompile Include="src\FingerprintProtocol.pb-c.c" />
+    <ClCompile Include="src\group_cipher.c" />
+    <ClCompile Include="src\group_session_builder.c" />
+    <ClCompile Include="src\hkdf.c" />
+    <ClCompile Include="src\key_helper.c" />
+    <ClCompile Include="src\LocalStorageProtocol.pb-c.c" />
+    <ClCompile Include="src\protocol.c" />
+    <ClCompile Include="src\ratchet.c" />
+    <ClCompile Include="src\sender_key.c" />
+    <ClCompile Include="src\sender_key_record.c" />
+    <ClCompile Include="src\sender_key_state.c" />
+    <ClCompile Include="src\session_builder.c" />
+    <ClCompile Include="src\session_cipher.c" />
+    <ClCompile Include="src\session_pre_key.c" />
+    <ClCompile Include="src\session_record.c" />
+    <ClCompile Include="src\session_state.c" />
+    <ClCompile Include="src\signal_protocol.c" />
+    <ClCompile Include="src\vpool.c" />
+    <ClCompile Include="src\WhisperTextProtocol.pb-c.c" />
+    <ClCompile Include="src\curve.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="src\device_consistency.c" />
+    <ClCompile Include="src\fingerprint.c" />
+    <ClCompile Include="src\FingerprintProtocol.pb-c.c" />
+    <ClCompile Include="src\group_cipher.c" />
+    <ClCompile Include="src\group_session_builder.c" />
+    <ClCompile Include="src\hkdf.c" />
+    <ClCompile Include="src\key_helper.c" />
+    <ClCompile Include="src\LocalStorageProtocol.pb-c.c" />
+    <ClCompile Include="src\protocol.c" />
+    <ClCompile Include="src\ratchet.c" />
+    <ClCompile Include="src\sender_key.c" />
+    <ClCompile Include="src\sender_key_record.c" />
+    <ClCompile Include="src\sender_key_state.c" />
+    <ClCompile Include="src\session_builder.c" />
+    <ClCompile Include="src\session_cipher.c" />
+    <ClCompile Include="src\session_pre_key.c" />
+    <ClCompile Include="src\session_record.c" />
+    <ClCompile Include="src\session_state.c" />
+    <ClCompile Include="src\signal_protocol.c" />
+    <ClCompile Include="src\vpool.c" />
+    <ClCompile Include="src\WhisperTextProtocol.pb-c.c" />
+    <ClCompile Include="src\curve.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="src\device_consistency.c" />
+    <ClCompile Include="src\fingerprint.c" />
+    <ClCompile Include="src\FingerprintProtocol.pb-c.c" />
+    <ClCompile Include="src\group_cipher.c" />
+    <ClCompile Include="src\group_session_builder.c" />
+    <ClCompile Include="src\hkdf.c" />
+    <ClCompile Include="src\key_helper.c" />
+    <ClCompile Include="src\LocalStorageProtocol.pb-c.c" />
+    <ClCompile Include="src\protocol.c" />
+    <ClCompile Include="src\ratchet.c" />
+    <ClCompile Include="src\sender_key.c" />
+    <ClCompile Include="src\sender_key_record.c" />
+    <ClCompile Include="src\sender_key_state.c" />
+    <ClCompile Include="src\session_builder.c" />
+    <ClCompile Include="src\session_cipher.c" />
+    <ClCompile Include="src\session_pre_key.c" />
+    <ClCompile Include="src\session_record.c" />
+    <ClCompile Include="src\session_state.c" />
+    <ClCompile Include="src\signal_protocol.c" />
+    <ClCompile Include="src\vpool.c" />
+    <ClCompile Include="src\WhisperTextProtocol.pb-c.c" />
+    <ClCompile Include="src\curve.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="src\device_consistency.c" />
+    <ClCompile Include="src\fingerprint.c" />
+    <ClCompile Include="src\FingerprintProtocol.pb-c.c" />
+    <ClCompile Include="src\group_cipher.c" />
+    <ClCompile Include="src\group_session_builder.c" />
+    <ClCompile Include="src\hkdf.c" />
+    <ClCompile Include="src\key_helper.c" />
+    <ClCompile Include="src\LocalStorageProtocol.pb-c.c" />
+    <ClCompile Include="src\protocol.c" />
+    <ClCompile Include="src\ratchet.c" />
+    <ClCompile Include="src\sender_key.c" />
+    <ClCompile Include="src\sender_key_record.c" />
+    <ClCompile Include="src\sender_key_state.c" />
+    <ClCompile Include="src\session_builder.c" />
+    <ClCompile Include="src\session_cipher.c" />
+    <ClCompile Include="src\session_pre_key.c" />
+    <ClCompile Include="src\session_record.c" />
+    <ClCompile Include="src\session_state.c" />
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+    <ClInclude Include="src\sender_key_record.h" />
+    <ClInclude Include="src\sender_key_state.h" />
+    <ClInclude Include="src\session_builder.h" />
+    <ClInclude Include="src\session_builder_internal.h" />
+    <ClInclude Include="src\session_cipher.h" />
+    <ClInclude Include="src\session_pre_key.h" />
+    <ClInclude Include="src\session_record.h" />
+    <ClInclude Include="src\session_state.h" />
+    <ClInclude Include="src\signal_protocol.h" />
+    <ClInclude Include="src\signal_protocol_internal.h" />
+    <ClInclude Include="src\signal_protocol_types.h" />
+    <ClInclude Include="src\utarray.h" />
+    <ClInclude Include="src\uthash.h" />
+    <ClInclude Include="src\utlist.h" />
+    <ClInclude Include="src\utstring.h" />
+    <ClInclude Include="src\vpool.h" />
+    <ClInclude Include="src\WhisperTextProtocol.pb-c.h" />
+    <ClInclude Include="src\curve.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="src\device_consistency.h" />
+    <ClInclude Include="src\fingerprint.h" />
+    <ClInclude Include="src\FingerprintProtocol.pb-c.h" />
+    <ClInclude Include="src\group_cipher.h" />
+    <ClInclude Include="src\group_session_builder.h" />
+    <ClInclude Include="src\hkdf.h" />
+    <ClInclude Include="src\key_helper.h" />
+    <ClInclude Include="src\LocalStorageProtocol.pb-c.h" />
+    <ClInclude Include="src\protocol.h" />
+    <ClInclude Include="src\ratchet.h" />
+    <ClInclude Include="src\sender_key.h" />
+    <ClInclude Include="src\sender_key_record.h" />
+    <ClInclude Include="src\sender_key_state.h" />
+    <ClInclude Include="src\session_builder.h" />
+    <ClInclude Include="src\session_builder_internal.h" />
+    <ClInclude Include="src\session_cipher.h" />
+    <ClInclude Include="src\session_pre_key.h" />
+    <ClInclude Include="src\session_record.h" />
+    <ClInclude Include="src\session_state.h" />
+    <ClInclude Include="src\signal_protocol.h" />
+    <ClInclude Include="src\signal_protocol_internal.h" />
+    <ClInclude Include="src\signal_protocol_types.h" />
+    <ClInclude Include="src\utarray.h" />
+    <ClInclude Include="src\uthash.h" />
+    <ClInclude Include="src\utlist.h" />
+    <ClInclude Include="src\utstring.h" />
+    <ClInclude Include="src\vpool.h" />
+    <ClInclude Include="src\WhisperTextProtocol.pb-c.h" />
+    <ClInclude Include="src\curve.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="src\device_consistency.h" />
+    <ClInclude Include="src\fingerprint.h" />
+    <ClInclude Include="src\FingerprintProtocol.pb-c.h" />
+    <ClInclude Include="src\group_cipher.h" />
+    <ClInclude Include="src\group_session_builder.h" />
+    <ClInclude Include="src\hkdf.h" />
+    <ClInclude Include="src\key_helper.h" />
+    <ClInclude Include="src\LocalStorageProtocol.pb-c.h" />
+    <ClInclude Include="src\protocol.h" />
+    <ClInclude Include="src\ratchet.h" />
+    <ClInclude Include="src\sender_key.h" />
+    <ClInclude Include="src\sender_key_record.h" />
+    <ClInclude Include="src\sender_key_state.h" />
+    <ClInclude Include="src\session_builder.h" />
+    <ClInclude Include="src\session_builder_internal.h" />
+    <ClInclude Include="src\session_cipher.h" />
+    <ClInclude Include="src\session_pre_key.h" />
+    <ClInclude Include="src\session_record.h" />
+    <ClInclude Include="src\session_state.h" />
+    <ClInclude Include="src\signal_protocol.h" />
+    <ClInclude Include="src\signal_protocol_internal.h" />
+    <ClInclude Include="src\signal_protocol_types.h" />
+    <ClInclude Include="src\utarray.h" />
+    <ClInclude Include="src\uthash.h" />
+    <ClInclude Include="src\utlist.h" />
+    <ClInclude Include="src\utstring.h" />
+    <ClInclude Include="src\vpool.h" />
+    <ClInclude Include="src\WhisperTextProtocol.pb-c.h" />
+    <ClInclude Include="src\curve.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="src\device_consistency.h" />
+    <ClInclude Include="src\fingerprint.h" />
+    <ClInclude Include="src\FingerprintProtocol.pb-c.h" />
+    <ClInclude Include="src\group_cipher.h" />
+    <ClInclude Include="src\group_session_builder.h" />
+    <ClInclude Include="src\hkdf.h" />
+    <ClInclude Include="src\key_helper.h" />
+    <ClInclude Include="src\LocalStorageProtocol.pb-c.h" />
+    <ClInclude Include="src\protocol.h" />
+    <ClInclude Include="src\ratchet.h" />
+    <ClInclude Include="src\sender_key.h" />
+    <ClInclude Include="src\sender_key_record.h" />
+    <ClInclude Include="src\sender_key_state.h" />
+    <ClInclude Include="src\session_builder.h" />
+    <ClInclude Include="src\session_builder_internal.h" />
+    <ClInclude Include="src\session_cipher.h" />
+    <ClInclude Include="src\session_pre_key.h" />
+    <ClInclude Include="src\session_record.h" />
+    <ClInclude Include="src\session_state.h" />
+    <ClInclude Include="src\signal_protocol.h" />
+    <ClInclude Include="src\signal_protocol_internal.h" />
+    <ClInclude Include="src\signal_protocol_types.h" />
+    <ClInclude Include="src\utarray.h" />
+    <ClInclude Include="src\uthash.h" />
+    <ClInclude Include="src\utlist.h" />
+    <ClInclude Include="src\utstring.h" />
+    <ClInclude Include="src\vpool.h" />
+    <ClInclude Include="src\WhisperTextProtocol.pb-c.h" />
+    <ClInclude Include="src\curve.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="src\device_consistency.h" />
+    <ClInclude Include="src\fingerprint.h" />
+    <ClInclude Include="src\FingerprintProtocol.pb-c.h" />
+    <ClInclude Include="src\group_cipher.h" />
+    <ClInclude Include="src\group_session_builder.h" />
+    <ClInclude Include="src\hkdf.h" />
+    <ClInclude Include="src\key_helper.h" />
+    <ClInclude Include="src\LocalStorageProtocol.pb-c.h" />
+    <ClInclude Include="src\protocol.h" />
+    <ClInclude Include="src\ratchet.h" />
+    <ClInclude Include="src\sender_key.h" />
+    <ClInclude Include="src\sender_key_record.h" />
+    <ClInclude Include="src\sender_key_state.h" />
+    <ClInclude Include="src\session_builder.h" />
+    <ClInclude Include="src\session_builder_internal.h" />
+    <ClInclude Include="src\session_cipher.h" />
+    <ClInclude Include="src\session_pre_key.h" />
+    <ClInclude Include="src\session_record.h" />
+    <ClInclude Include="src\session_state.h" />
+    <ClInclude Include="src\signal_protocol.h" />
+    <ClInclude Include="src\signal_protocol_internal.h" />
+    <ClInclude Include="src\signal_protocol_types.h" />
+    <ClInclude Include="src\utarray.h" />
+    <ClInclude Include="src\uthash.h" />
+    <ClInclude Include="src\utlist.h" />
+    <ClInclude Include="src\utstring.h" />
+    <ClInclude Include="src\vpool.h" />
+    <ClInclude Include="src\WhisperTextProtocol.pb-c.h" />
+    <ClInclude Include="src\curve.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="src\device_consistency.h" />
+    <ClInclude Include="src\fingerprint.h" />
+    <ClInclude Include="src\FingerprintProtocol.pb-c.h" />
+    <ClInclude Include="src\group_cipher.h" />
+    <ClInclude Include="src\group_session_builder.h" />
+    <ClInclude Include="src\hkdf.h" />
+    <ClInclude Include="src\key_helper.h" />
+    <ClInclude Include="src\LocalStorageProtocol.pb-c.h" />
+    <ClInclude Include="src\protocol.h" />
+    <ClInclude Include="src\ratchet.h" />
+    <ClInclude Include="src\sender_key.h" />
+    <ClInclude Include="src\sender_key_record.h" />
+    <ClInclude Include="src\sender_key_state.h" />
+    <ClInclude Include="src\session_builder.h" />
+    <ClInclude Include="src\session_builder_internal.h" />
+    <ClInclude Include="src\session_cipher.h" />
+    <ClInclude Include="src\session_pre_key.h" />
+    <ClInclude Include="src\session_record.h" />
+    <ClInclude Include="src\session_state.h" />
+    <ClInclude Include="src\signal_protocol.h" />
+    <ClInclude Include="src\signal_protocol_internal.h" />
+    <ClInclude Include="src\signal_protocol_types.h" />
+    <ClInclude Include="src\utarray.h" />
+    <ClInclude Include="src\uthash.h" />
+    <ClInclude Include="src\utlist.h" />
+    <ClInclude Include="src\utstring.h" />
+    <ClInclude Include="src\vpool.h" />
+    <ClInclude Include="src\WhisperTextProtocol.pb-c.h" />
+    <ClInclude Include="src\curve.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="src\device_consistency.h" />
+    <ClInclude Include="src\fingerprint.h" />
+    <ClInclude Include="src\FingerprintProtocol.pb-c.h" />
+    <ClInclude Include="src\group_cipher.h" />
+    <ClInclude Include="src\group_session_builder.h" />
+    <ClInclude Include="src\hkdf.h" />
+    <ClInclude Include="src\key_helper.h" />
+    <ClInclude Include="src\LocalStorageProtocol.pb-c.h" />
+    <ClInclude Include="src\protocol.h" />
+    <ClInclude Include="src\ratchet.h" />
+    <ClInclude Include="src\sender_key.h" />
+    <ClInclude Include="src\sender_key_record.h" />
+    <ClInclude Include="src\sender_key_state.h" />
+    <ClInclude Include="src\session_builder.h" />
+    <ClInclude Include="src\session_builder_internal.h" />
+    <ClInclude Include="src\session_cipher.h" />
+    <ClInclude Include="src\session_pre_key.h" />
+    <ClInclude Include="src\session_record.h" />
+    <ClInclude Include="src\session_state.h" />
+    <ClInclude Include="src\signal_protocol.h" />
+    <ClInclude Include="src\signal_protocol_internal.h" />
+    <ClInclude Include="src\signal_protocol_types.h" />
+    <ClInclude Include="src\utarray.h" />
+    <ClInclude Include="src\uthash.h" />
+    <ClInclude Include="src\utlist.h" />
+    <ClInclude Include="src\utstring.h" />
+    <ClInclude Include="src\vpool.h" />
+    <ClInclude Include="src\WhisperTextProtocol.pb-c.h" />
+    <ClInclude Include="src\curve.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="src\device_consistency.h" />
+    <ClInclude Include="src\fingerprint.h" />
+    <ClInclude Include="src\FingerprintProtocol.pb-c.h" />
+    <ClInclude Include="src\group_cipher.h" />
+    <ClInclude Include="src\group_session_builder.h" />
+    <ClInclude Include="src\hkdf.h" />
+    <ClInclude Include="src\key_helper.h" />
+    <ClInclude Include="src\LocalStorageProtocol.pb-c.h" />
+    <ClInclude Include="src\protocol.h" />
+    <ClInclude Include="src\ratchet.h" />
+    <ClInclude Include="src\sender_key.h" />
+    <ClInclude Include="src\sender_key_record.h" />
+    <ClInclude Include="src\sender_key_state.h" />
+    <ClInclude Include="src\session_builder.h" />
+    <ClInclude Include="src\session_builder_internal.h" />
+    <ClInclude Include="src\session_cipher.h" />
+    <ClInclude Include="src\session_pre_key.h" />
+    <ClInclude Include="src\session_record.h" />
+    <ClInclude Include="src\session_state.h" />
+    <ClInclude Include="src\signal_protocol.h" />
+    <ClInclude Include="src\signal_protocol_internal.h" />
+    <ClInclude Include="src\signal_protocol_types.h" />
+    <ClInclude Include="src\utarray.h" />
+    <ClInclude Include="src\uthash.h" />
+    <ClInclude Include="src\utlist.h" />
+    <ClInclude Include="src\utstring.h" />
+    <ClInclude Include="src\vpool.h" />
+    <ClInclude Include="src\WhisperTextProtocol.pb-c.h" />
+    <ClInclude Include="src\curve.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="src\device_consistency.h" />
+    <ClInclude Include="src\fingerprint.h" />
+    <ClInclude Include="src\FingerprintProtocol.pb-c.h" />
+    <ClInclude Include="src\group_cipher.h" />
+    <ClInclude Include="src\group_session_builder.h" />
+    <ClInclude Include="src\hkdf.h" />
+    <ClInclude Include="src\key_helper.h" />
+    <ClInclude Include="src\LocalStorageProtocol.pb-c.h" />
+    <ClInclude Include="src\protocol.h" />
+    <ClInclude Include="src\ratchet.h" />
+    <ClInclude Include="src\sender_key.h" />
+    <ClInclude Include="src\sender_key_record.h" />
+    <ClInclude Include="src\sender_key_state.h" />
+    <ClInclude Include="src\session_builder.h" />
+    <ClInclude Include="src\session_builder_internal.h" />
+    <ClInclude Include="src\session_cipher.h" />
+    <ClInclude Include="src\session_pre_key.h" />
+    <ClInclude Include="src\session_record.h" />
+    <ClInclude Include="src\session_state.h" />
+    <ClInclude Include="src\signal_protocol.h" />
+    <ClInclude Include="src\signal_protocol_internal.h" />
+    <ClInclude Include="src\signal_protocol_types.h" />
+    <ClInclude Include="src\utarray.h" />
+    <ClInclude Include="src\uthash.h" />
+    <ClInclude Include="src\utlist.h" />
+    <ClInclude Include="src\utstring.h" />
+    <ClInclude Include="src\vpool.h" />
+    <ClInclude Include="src\WhisperTextProtocol.pb-c.h" />
+    <ClInclude Include="src\curve.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="src\device_consistency.h" />
+    <ClInclude Include="src\fingerprint.h" />
+    <ClInclude Include="src\FingerprintProtocol.pb-c.h" />
+    <ClInclude Include="src\group_cipher.h" />
+    <ClInclude Include="src\group_session_builder.h" />
+    <ClInclude Include="src\hkdf.h" />
+    <ClInclude Include="src\key_helper.h" />
+    <ClInclude Include="src\LocalStorageProtocol.pb-c.h" />
+    <ClInclude Include="src\protocol.h" />
+    <ClInclude Include="src\ratchet.h" />
+    <ClInclude Include="src\sender_key.h" />
+    <ClInclude Include="src\sender_key_record.h" />
+    <ClInclude Include="src\sender_key_state.h" />
+    <ClInclude Include="src\session_builder.h" />
+    <ClInclude Include="src\session_builder_internal.h" />
+    <ClInclude Include="src\session_cipher.h" />
+    <ClInclude Include="src\session_pre_key.h" />
+    <ClInclude Include="src\session_record.h" />
+    <ClInclude Include="src\session_state.h" />
+    <ClInclude Include="src\signal_protocol.h" />
+    <ClInclude Include="src\signal_protocol_internal.h" />
+    <ClInclude Include="src\signal_protocol_types.h" />
+    <ClInclude Include="src\utarray.h" />
+    <ClInclude Include="src\uthash.h" />
+    <ClInclude Include="src\utlist.h" />
+    <ClInclude Include="src\utstring.h" />
+    <ClInclude Include="src\vpool.h" />
+    <ClInclude Include="src\WhisperTextProtocol.pb-c.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="src\signal.def">
+      <Filter>Source Files</Filter>
+    </None>
+  </ItemGroup>
 </Project>
 \ No newline at end of file
diff --git a/libs/libaxolotl/src/CMakeLists.txt b/libs/libaxolotl/src/CMakeLists.txt
index 3900713add..54a24d0a6c 100644
--- a/libs/libaxolotl/src/CMakeLists.txt
+++ b/libs/libaxolotl/src/CMakeLists.txt
@@ -13,13 +13,13 @@ set(protobuf_SRCS
 	FingerprintProtocol.pb-c.c
 )
 
-set(axolotl_SRCS
+set(signal_protocol_SRCS
 	vpool.c
 	vpool.h
-	axolotl.c
-	axolotl.h
-	axolotl_types.h
-	axolotl_internal.h
+	signal_protocol.c
+	signal_protocol.h
+	signal_protocol_types.h
+	signal_protocol_internal.h
 	curve.c
 	curve.h
 	hkdf.c
@@ -36,6 +36,7 @@ set(axolotl_SRCS
 	session_pre_key.h
 	session_builder.c
 	session_builder.h
+	session_builder_internal.h
 	session_cipher.c
 	session_cipher.h
 	key_helper.c
@@ -52,22 +53,24 @@ set(axolotl_SRCS
 	group_cipher.h
 	fingerprint.c
 	fingerprint.h
+	device_consistency.c
+	device_consistency.h
 )
 
 add_subdirectory(curve25519)
 add_subdirectory(protobuf-c)
 
-add_library(axolotl-c
+add_library(signal-protocol-c
 	${protobuf_SRCS}
-	${axolotl_SRCS}
+	${signal_protocol_SRCS}
 	$<TARGET_OBJECTS:curve25519>
 	$<TARGET_OBJECTS:protobuf-c>
 )
 
 INSTALL(
 	FILES
-	axolotl.h
-	axolotl_types.h
+	signal_protocol.h
+	signal_protocol_types.h
 	curve.h
 	hkdf.h
 	ratchet.h
@@ -84,7 +87,8 @@ INSTALL(
 	group_session_builder.h
 	group_cipher.h
 	fingerprint.h
-	DESTINATION include/axolotl
+	device_consistency.h
+	DESTINATION ${INCLUDE_INSTALL_DIR}/signal
 )
 
-INSTALL(TARGETS axolotl-c DESTINATION lib)
+INSTALL(TARGETS signal-protocol-c DESTINATION ${LIB_INSTALL_DIR})
diff --git a/libs/libaxolotl/src/FingerprintProtocol.pb-c.h b/libs/libaxolotl/src/FingerprintProtocol.pb-c.h
index 8bfce6eaeb..8bfce6eaeb 100644..100755
--- a/libs/libaxolotl/src/FingerprintProtocol.pb-c.h
+++ b/libs/libaxolotl/src/FingerprintProtocol.pb-c.h
diff --git a/libs/libaxolotl/src/LocalStorageProtocol.pb-c.h b/libs/libaxolotl/src/LocalStorageProtocol.pb-c.h
index 86e657e51a..86e657e51a 100644..100755
--- a/libs/libaxolotl/src/LocalStorageProtocol.pb-c.h
+++ b/libs/libaxolotl/src/LocalStorageProtocol.pb-c.h
diff --git a/libs/libaxolotl/src/WhisperTextProtocol.pb-c.c b/libs/libaxolotl/src/WhisperTextProtocol.pb-c.c
index 12c756a047..f73c0642fe 100644
--- a/libs/libaxolotl/src/WhisperTextProtocol.pb-c.c
+++ b/libs/libaxolotl/src/WhisperTextProtocol.pb-c.c
@@ -7,90 +7,90 @@
 #endif
 
 #include "WhisperTextProtocol.pb-c.h"
-void   textsecure__whisper_message__init
-                     (Textsecure__WhisperMessage         *message)
+void   textsecure__signal_message__init
+                     (Textsecure__SignalMessage         *message)
 {
-  static Textsecure__WhisperMessage init_value = TEXTSECURE__WHISPER_MESSAGE__INIT;
+  static Textsecure__SignalMessage init_value = TEXTSECURE__SIGNAL_MESSAGE__INIT;
   *message = init_value;
 }
-size_t textsecure__whisper_message__get_packed_size
-                     (const Textsecure__WhisperMessage *message)
+size_t textsecure__signal_message__get_packed_size
+                     (const Textsecure__SignalMessage *message)
 {
-  assert(message->base.descriptor == &textsecure__whisper_message__descriptor);
+  assert(message->base.descriptor == &textsecure__signal_message__descriptor);
   return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
 }
-size_t textsecure__whisper_message__pack
-                     (const Textsecure__WhisperMessage *message,
+size_t textsecure__signal_message__pack
+                     (const Textsecure__SignalMessage *message,
                       uint8_t       *out)
 {
-  assert(message->base.descriptor == &textsecure__whisper_message__descriptor);
+  assert(message->base.descriptor == &textsecure__signal_message__descriptor);
   return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
 }
-size_t textsecure__whisper_message__pack_to_buffer
-                     (const Textsecure__WhisperMessage *message,
+size_t textsecure__signal_message__pack_to_buffer
+                     (const Textsecure__SignalMessage *message,
                       ProtobufCBuffer *buffer)
 {
-  assert(message->base.descriptor == &textsecure__whisper_message__descriptor);
+  assert(message->base.descriptor == &textsecure__signal_message__descriptor);
   return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
 }
-Textsecure__WhisperMessage *
-       textsecure__whisper_message__unpack
+Textsecure__SignalMessage *
+       textsecure__signal_message__unpack
                      (ProtobufCAllocator  *allocator,
                       size_t               len,
                       const uint8_t       *data)
 {
-  return (Textsecure__WhisperMessage *)
-     protobuf_c_message_unpack (&textsecure__whisper_message__descriptor,
+  return (Textsecure__SignalMessage *)
+     protobuf_c_message_unpack (&textsecure__signal_message__descriptor,
                                 allocator, len, data);
 }
-void   textsecure__whisper_message__free_unpacked
-                     (Textsecure__WhisperMessage *message,
+void   textsecure__signal_message__free_unpacked
+                     (Textsecure__SignalMessage *message,
                       ProtobufCAllocator *allocator)
 {
-  assert(message->base.descriptor == &textsecure__whisper_message__descriptor);
+  assert(message->base.descriptor == &textsecure__signal_message__descriptor);
   protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
 }
-void   textsecure__pre_key_whisper_message__init
-                     (Textsecure__PreKeyWhisperMessage         *message)
+void   textsecure__pre_key_signal_message__init
+                     (Textsecure__PreKeySignalMessage         *message)
 {
-  static Textsecure__PreKeyWhisperMessage init_value = TEXTSECURE__PRE_KEY_WHISPER_MESSAGE__INIT;
+  static Textsecure__PreKeySignalMessage init_value = TEXTSECURE__PRE_KEY_SIGNAL_MESSAGE__INIT;
   *message = init_value;
 }
-size_t textsecure__pre_key_whisper_message__get_packed_size
-                     (const Textsecure__PreKeyWhisperMessage *message)
+size_t textsecure__pre_key_signal_message__get_packed_size
+                     (const Textsecure__PreKeySignalMessage *message)
 {
-  assert(message->base.descriptor == &textsecure__pre_key_whisper_message__descriptor);
+  assert(message->base.descriptor == &textsecure__pre_key_signal_message__descriptor);
   return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
 }
-size_t textsecure__pre_key_whisper_message__pack
-                     (const Textsecure__PreKeyWhisperMessage *message,
+size_t textsecure__pre_key_signal_message__pack
+                     (const Textsecure__PreKeySignalMessage *message,
                       uint8_t       *out)
 {
-  assert(message->base.descriptor == &textsecure__pre_key_whisper_message__descriptor);
+  assert(message->base.descriptor == &textsecure__pre_key_signal_message__descriptor);
   return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
 }
-size_t textsecure__pre_key_whisper_message__pack_to_buffer
-                     (const Textsecure__PreKeyWhisperMessage *message,
+size_t textsecure__pre_key_signal_message__pack_to_buffer
+                     (const Textsecure__PreKeySignalMessage *message,
                       ProtobufCBuffer *buffer)
 {
-  assert(message->base.descriptor == &textsecure__pre_key_whisper_message__descriptor);
+  assert(message->base.descriptor == &textsecure__pre_key_signal_message__descriptor);
   return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
 }
-Textsecure__PreKeyWhisperMessage *
-       textsecure__pre_key_whisper_message__unpack
+Textsecure__PreKeySignalMessage *
+       textsecure__pre_key_signal_message__unpack
                      (ProtobufCAllocator  *allocator,
                       size_t               len,
                       const uint8_t       *data)
 {
-  return (Textsecure__PreKeyWhisperMessage *)
-     protobuf_c_message_unpack (&textsecure__pre_key_whisper_message__descriptor,
+  return (Textsecure__PreKeySignalMessage *)
+     protobuf_c_message_unpack (&textsecure__pre_key_signal_message__descriptor,
                                 allocator, len, data);
 }
-void   textsecure__pre_key_whisper_message__free_unpacked
-                     (Textsecure__PreKeyWhisperMessage *message,
+void   textsecure__pre_key_signal_message__free_unpacked
+                     (Textsecure__PreKeySignalMessage *message,
                       ProtobufCAllocator *allocator)
 {
-  assert(message->base.descriptor == &textsecure__pre_key_whisper_message__descriptor);
+  assert(message->base.descriptor == &textsecure__pre_key_signal_message__descriptor);
   protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
 }
 void   textsecure__key_exchange_message__init
@@ -222,15 +222,58 @@ void   textsecure__sender_key_distribution_message__free_unpacked
   assert(message->base.descriptor == &textsecure__sender_key_distribution_message__descriptor);
   protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
 }
-static const ProtobufCFieldDescriptor textsecure__whisper_message__field_descriptors[4] =
+void   textsecure__device_consistency_code_message__init
+                     (Textsecure__DeviceConsistencyCodeMessage         *message)
+{
+  static Textsecure__DeviceConsistencyCodeMessage init_value = TEXTSECURE__DEVICE_CONSISTENCY_CODE_MESSAGE__INIT;
+  *message = init_value;
+}
+size_t textsecure__device_consistency_code_message__get_packed_size
+                     (const Textsecure__DeviceConsistencyCodeMessage *message)
+{
+  assert(message->base.descriptor == &textsecure__device_consistency_code_message__descriptor);
+  return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
+}
+size_t textsecure__device_consistency_code_message__pack
+                     (const Textsecure__DeviceConsistencyCodeMessage *message,
+                      uint8_t       *out)
+{
+  assert(message->base.descriptor == &textsecure__device_consistency_code_message__descriptor);
+  return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
+}
+size_t textsecure__device_consistency_code_message__pack_to_buffer
+                     (const Textsecure__DeviceConsistencyCodeMessage *message,
+                      ProtobufCBuffer *buffer)
+{
+  assert(message->base.descriptor == &textsecure__device_consistency_code_message__descriptor);
+  return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
+}
+Textsecure__DeviceConsistencyCodeMessage *
+       textsecure__device_consistency_code_message__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data)
+{
+  return (Textsecure__DeviceConsistencyCodeMessage *)
+     protobuf_c_message_unpack (&textsecure__device_consistency_code_message__descriptor,
+                                allocator, len, data);
+}
+void   textsecure__device_consistency_code_message__free_unpacked
+                     (Textsecure__DeviceConsistencyCodeMessage *message,
+                      ProtobufCAllocator *allocator)
+{
+  assert(message->base.descriptor == &textsecure__device_consistency_code_message__descriptor);
+  protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
+}
+static const ProtobufCFieldDescriptor textsecure__signal_message__field_descriptors[4] =
 {
   {
     "ratchetKey",
     1,
     PROTOBUF_C_LABEL_OPTIONAL,
     PROTOBUF_C_TYPE_BYTES,
-    offsetof(Textsecure__WhisperMessage, has_ratchetkey),
-    offsetof(Textsecure__WhisperMessage, ratchetkey),
+    offsetof(Textsecure__SignalMessage, has_ratchetkey),
+    offsetof(Textsecure__SignalMessage, ratchetkey),
     NULL,
     NULL,
     0,             /* flags */
@@ -241,8 +284,8 @@ static const ProtobufCFieldDescriptor textsecure__whisper_message__field_descrip
     2,
     PROTOBUF_C_LABEL_OPTIONAL,
     PROTOBUF_C_TYPE_UINT32,
-    offsetof(Textsecure__WhisperMessage, has_counter),
-    offsetof(Textsecure__WhisperMessage, counter),
+    offsetof(Textsecure__SignalMessage, has_counter),
+    offsetof(Textsecure__SignalMessage, counter),
     NULL,
     NULL,
     0,             /* flags */
@@ -253,8 +296,8 @@ static const ProtobufCFieldDescriptor textsecure__whisper_message__field_descrip
     3,
     PROTOBUF_C_LABEL_OPTIONAL,
     PROTOBUF_C_TYPE_UINT32,
-    offsetof(Textsecure__WhisperMessage, has_previouscounter),
-    offsetof(Textsecure__WhisperMessage, previouscounter),
+    offsetof(Textsecure__SignalMessage, has_previouscounter),
+    offsetof(Textsecure__SignalMessage, previouscounter),
     NULL,
     NULL,
     0,             /* flags */
@@ -265,49 +308,49 @@ static const ProtobufCFieldDescriptor textsecure__whisper_message__field_descrip
     4,
     PROTOBUF_C_LABEL_OPTIONAL,
     PROTOBUF_C_TYPE_BYTES,
-    offsetof(Textsecure__WhisperMessage, has_ciphertext),
-    offsetof(Textsecure__WhisperMessage, ciphertext),
+    offsetof(Textsecure__SignalMessage, has_ciphertext),
+    offsetof(Textsecure__SignalMessage, ciphertext),
     NULL,
     NULL,
     0,             /* flags */
     0,NULL,NULL    /* reserved1,reserved2, etc */
   },
 };
-static const unsigned textsecure__whisper_message__field_indices_by_name[] = {
+static const unsigned textsecure__signal_message__field_indices_by_name[] = {
   3,   /* field[3] = ciphertext */
   1,   /* field[1] = counter */
   2,   /* field[2] = previousCounter */
   0,   /* field[0] = ratchetKey */
 };
-static const ProtobufCIntRange textsecure__whisper_message__number_ranges[1 + 1] =
+static const ProtobufCIntRange textsecure__signal_message__number_ranges[1 + 1] =
 {
   { 1, 0 },
   { 0, 4 }
 };
-const ProtobufCMessageDescriptor textsecure__whisper_message__descriptor =
+const ProtobufCMessageDescriptor textsecure__signal_message__descriptor =
 {
   PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
-  "textsecure.WhisperMessage",
-  "WhisperMessage",
-  "Textsecure__WhisperMessage",
+  "textsecure.SignalMessage",
+  "SignalMessage",
+  "Textsecure__SignalMessage",
   "textsecure",
-  sizeof(Textsecure__WhisperMessage),
+  sizeof(Textsecure__SignalMessage),
   4,
-  textsecure__whisper_message__field_descriptors,
-  textsecure__whisper_message__field_indices_by_name,
-  1,  textsecure__whisper_message__number_ranges,
-  (ProtobufCMessageInit) textsecure__whisper_message__init,
+  textsecure__signal_message__field_descriptors,
+  textsecure__signal_message__field_indices_by_name,
+  1,  textsecure__signal_message__number_ranges,
+  (ProtobufCMessageInit) textsecure__signal_message__init,
   NULL,NULL,NULL    /* reserved[123] */
 };
-static const ProtobufCFieldDescriptor textsecure__pre_key_whisper_message__field_descriptors[6] =
+static const ProtobufCFieldDescriptor textsecure__pre_key_signal_message__field_descriptors[6] =
 {
   {
     "preKeyId",
     1,
     PROTOBUF_C_LABEL_OPTIONAL,
     PROTOBUF_C_TYPE_UINT32,
-    offsetof(Textsecure__PreKeyWhisperMessage, has_prekeyid),
-    offsetof(Textsecure__PreKeyWhisperMessage, prekeyid),
+    offsetof(Textsecure__PreKeySignalMessage, has_prekeyid),
+    offsetof(Textsecure__PreKeySignalMessage, prekeyid),
     NULL,
     NULL,
     0,             /* flags */
@@ -318,8 +361,8 @@ static const ProtobufCFieldDescriptor textsecure__pre_key_whisper_message__field
     2,
     PROTOBUF_C_LABEL_OPTIONAL,
     PROTOBUF_C_TYPE_BYTES,
-    offsetof(Textsecure__PreKeyWhisperMessage, has_basekey),
-    offsetof(Textsecure__PreKeyWhisperMessage, basekey),
+    offsetof(Textsecure__PreKeySignalMessage, has_basekey),
+    offsetof(Textsecure__PreKeySignalMessage, basekey),
     NULL,
     NULL,
     0,             /* flags */
@@ -330,8 +373,8 @@ static const ProtobufCFieldDescriptor textsecure__pre_key_whisper_message__field
     3,
     PROTOBUF_C_LABEL_OPTIONAL,
     PROTOBUF_C_TYPE_BYTES,
-    offsetof(Textsecure__PreKeyWhisperMessage, has_identitykey),
-    offsetof(Textsecure__PreKeyWhisperMessage, identitykey),
+    offsetof(Textsecure__PreKeySignalMessage, has_identitykey),
+    offsetof(Textsecure__PreKeySignalMessage, identitykey),
     NULL,
     NULL,
     0,             /* flags */
@@ -342,8 +385,8 @@ static const ProtobufCFieldDescriptor textsecure__pre_key_whisper_message__field
     4,
     PROTOBUF_C_LABEL_OPTIONAL,
     PROTOBUF_C_TYPE_BYTES,
-    offsetof(Textsecure__PreKeyWhisperMessage, has_message),
-    offsetof(Textsecure__PreKeyWhisperMessage, message),
+    offsetof(Textsecure__PreKeySignalMessage, has_message),
+    offsetof(Textsecure__PreKeySignalMessage, message),
     NULL,
     NULL,
     0,             /* flags */
@@ -354,8 +397,8 @@ static const ProtobufCFieldDescriptor textsecure__pre_key_whisper_message__field
     5,
     PROTOBUF_C_LABEL_OPTIONAL,
     PROTOBUF_C_TYPE_UINT32,
-    offsetof(Textsecure__PreKeyWhisperMessage, has_registrationid),
-    offsetof(Textsecure__PreKeyWhisperMessage, registrationid),
+    offsetof(Textsecure__PreKeySignalMessage, has_registrationid),
+    offsetof(Textsecure__PreKeySignalMessage, registrationid),
     NULL,
     NULL,
     0,             /* flags */
@@ -366,15 +409,15 @@ static const ProtobufCFieldDescriptor textsecure__pre_key_whisper_message__field
     6,
     PROTOBUF_C_LABEL_OPTIONAL,
     PROTOBUF_C_TYPE_UINT32,
-    offsetof(Textsecure__PreKeyWhisperMessage, has_signedprekeyid),
-    offsetof(Textsecure__PreKeyWhisperMessage, signedprekeyid),
+    offsetof(Textsecure__PreKeySignalMessage, has_signedprekeyid),
+    offsetof(Textsecure__PreKeySignalMessage, signedprekeyid),
     NULL,
     NULL,
     0,             /* flags */
     0,NULL,NULL    /* reserved1,reserved2, etc */
   },
 };
-static const unsigned textsecure__pre_key_whisper_message__field_indices_by_name[] = {
+static const unsigned textsecure__pre_key_signal_message__field_indices_by_name[] = {
   1,   /* field[1] = baseKey */
   2,   /* field[2] = identityKey */
   3,   /* field[3] = message */
@@ -382,24 +425,24 @@ static const unsigned textsecure__pre_key_whisper_message__field_indices_by_name
   4,   /* field[4] = registrationId */
   5,   /* field[5] = signedPreKeyId */
 };
-static const ProtobufCIntRange textsecure__pre_key_whisper_message__number_ranges[1 + 1] =
+static const ProtobufCIntRange textsecure__pre_key_signal_message__number_ranges[1 + 1] =
 {
   { 1, 0 },
   { 0, 6 }
 };
-const ProtobufCMessageDescriptor textsecure__pre_key_whisper_message__descriptor =
+const ProtobufCMessageDescriptor textsecure__pre_key_signal_message__descriptor =
 {
   PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
-  "textsecure.PreKeyWhisperMessage",
-  "PreKeyWhisperMessage",
-  "Textsecure__PreKeyWhisperMessage",
+  "textsecure.PreKeySignalMessage",
+  "PreKeySignalMessage",
+  "Textsecure__PreKeySignalMessage",
   "textsecure",
-  sizeof(Textsecure__PreKeyWhisperMessage),
+  sizeof(Textsecure__PreKeySignalMessage),
   6,
-  textsecure__pre_key_whisper_message__field_descriptors,
-  textsecure__pre_key_whisper_message__field_indices_by_name,
-  1,  textsecure__pre_key_whisper_message__number_ranges,
-  (ProtobufCMessageInit) textsecure__pre_key_whisper_message__init,
+  textsecure__pre_key_signal_message__field_descriptors,
+  textsecure__pre_key_signal_message__field_indices_by_name,
+  1,  textsecure__pre_key_signal_message__number_ranges,
+  (ProtobufCMessageInit) textsecure__pre_key_signal_message__init,
   NULL,NULL,NULL    /* reserved[123] */
 };
 static const ProtobufCFieldDescriptor textsecure__key_exchange_message__field_descriptors[5] =
@@ -633,3 +676,54 @@ const ProtobufCMessageDescriptor textsecure__sender_key_distribution_message__de
   (ProtobufCMessageInit) textsecure__sender_key_distribution_message__init,
   NULL,NULL,NULL    /* reserved[123] */
 };
+static const ProtobufCFieldDescriptor textsecure__device_consistency_code_message__field_descriptors[2] =
+{
+  {
+    "generation",
+    1,
+    PROTOBUF_C_LABEL_OPTIONAL,
+    PROTOBUF_C_TYPE_UINT32,
+    offsetof(Textsecure__DeviceConsistencyCodeMessage, has_generation),
+    offsetof(Textsecure__DeviceConsistencyCodeMessage, generation),
+    NULL,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "signature",
+    2,
+    PROTOBUF_C_LABEL_OPTIONAL,
+    PROTOBUF_C_TYPE_BYTES,
+    offsetof(Textsecure__DeviceConsistencyCodeMessage, has_signature),
+    offsetof(Textsecure__DeviceConsistencyCodeMessage, signature),
+    NULL,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned textsecure__device_consistency_code_message__field_indices_by_name[] = {
+  0,   /* field[0] = generation */
+  1,   /* field[1] = signature */
+};
+static const ProtobufCIntRange textsecure__device_consistency_code_message__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 2 }
+};
+const ProtobufCMessageDescriptor textsecure__device_consistency_code_message__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "textsecure.DeviceConsistencyCodeMessage",
+  "DeviceConsistencyCodeMessage",
+  "Textsecure__DeviceConsistencyCodeMessage",
+  "textsecure",
+  sizeof(Textsecure__DeviceConsistencyCodeMessage),
+  2,
+  textsecure__device_consistency_code_message__field_descriptors,
+  textsecure__device_consistency_code_message__field_indices_by_name,
+  1,  textsecure__device_consistency_code_message__number_ranges,
+  (ProtobufCMessageInit) textsecure__device_consistency_code_message__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
diff --git a/libs/libaxolotl/src/WhisperTextProtocol.pb-c.h b/libs/libaxolotl/src/WhisperTextProtocol.pb-c.h
index 909a7f59f3..de589106bb 100644..100755
--- a/libs/libaxolotl/src/WhisperTextProtocol.pb-c.h
+++ b/libs/libaxolotl/src/WhisperTextProtocol.pb-c.h
@@ -15,11 +15,12 @@ PROTOBUF_C__BEGIN_DECLS
 #endif
 
 
-typedef struct _Textsecure__WhisperMessage Textsecure__WhisperMessage;
-typedef struct _Textsecure__PreKeyWhisperMessage Textsecure__PreKeyWhisperMessage;
+typedef struct _Textsecure__SignalMessage Textsecure__SignalMessage;
+typedef struct _Textsecure__PreKeySignalMessage Textsecure__PreKeySignalMessage;
 typedef struct _Textsecure__KeyExchangeMessage Textsecure__KeyExchangeMessage;
 typedef struct _Textsecure__SenderKeyMessage Textsecure__SenderKeyMessage;
 typedef struct _Textsecure__SenderKeyDistributionMessage Textsecure__SenderKeyDistributionMessage;
+typedef struct _Textsecure__DeviceConsistencyCodeMessage Textsecure__DeviceConsistencyCodeMessage;
 
 
 /* --- enums --- */
@@ -27,7 +28,7 @@ typedef struct _Textsecure__SenderKeyDistributionMessage Textsecure__SenderKeyDi
 
 /* --- messages --- */
 
-struct  _Textsecure__WhisperMessage
+struct  _Textsecure__SignalMessage
 {
   ProtobufCMessage base;
   protobuf_c_boolean has_ratchetkey;
@@ -39,12 +40,12 @@ struct  _Textsecure__WhisperMessage
   protobuf_c_boolean has_ciphertext;
   ProtobufCBinaryData ciphertext;
 };
-#define TEXTSECURE__WHISPER_MESSAGE__INIT \
- { PROTOBUF_C_MESSAGE_INIT (&textsecure__whisper_message__descriptor) \
+#define TEXTSECURE__SIGNAL_MESSAGE__INIT \
+ { PROTOBUF_C_MESSAGE_INIT (&textsecure__signal_message__descriptor) \
     , 0,{0,NULL}, 0,0, 0,0, 0,{0,NULL} }
 
 
-struct  _Textsecure__PreKeyWhisperMessage
+struct  _Textsecure__PreKeySignalMessage
 {
   ProtobufCMessage base;
   protobuf_c_boolean has_registrationid;
@@ -58,13 +59,13 @@ struct  _Textsecure__PreKeyWhisperMessage
   protobuf_c_boolean has_identitykey;
   ProtobufCBinaryData identitykey;
   /*
-   * WhisperMessage
+   * SignalMessage
    */
   protobuf_c_boolean has_message;
   ProtobufCBinaryData message;
 };
-#define TEXTSECURE__PRE_KEY_WHISPER_MESSAGE__INIT \
- { PROTOBUF_C_MESSAGE_INIT (&textsecure__pre_key_whisper_message__descriptor) \
+#define TEXTSECURE__PRE_KEY_SIGNAL_MESSAGE__INIT \
+ { PROTOBUF_C_MESSAGE_INIT (&textsecure__pre_key_signal_message__descriptor) \
     , 0,0, 0,0, 0,0, 0,{0,NULL}, 0,{0,NULL}, 0,{0,NULL} }
 
 
@@ -119,43 +120,56 @@ struct  _Textsecure__SenderKeyDistributionMessage
     , 0,0, 0,0, 0,{0,NULL}, 0,{0,NULL} }
 
 
-/* Textsecure__WhisperMessage methods */
-void   textsecure__whisper_message__init
-                     (Textsecure__WhisperMessage         *message);
-size_t textsecure__whisper_message__get_packed_size
-                     (const Textsecure__WhisperMessage   *message);
-size_t textsecure__whisper_message__pack
-                     (const Textsecure__WhisperMessage   *message,
+struct  _Textsecure__DeviceConsistencyCodeMessage
+{
+  ProtobufCMessage base;
+  protobuf_c_boolean has_generation;
+  uint32_t generation;
+  protobuf_c_boolean has_signature;
+  ProtobufCBinaryData signature;
+};
+#define TEXTSECURE__DEVICE_CONSISTENCY_CODE_MESSAGE__INIT \
+ { PROTOBUF_C_MESSAGE_INIT (&textsecure__device_consistency_code_message__descriptor) \
+    , 0,0, 0,{0,NULL} }
+
+
+/* Textsecure__SignalMessage methods */
+void   textsecure__signal_message__init
+                     (Textsecure__SignalMessage         *message);
+size_t textsecure__signal_message__get_packed_size
+                     (const Textsecure__SignalMessage   *message);
+size_t textsecure__signal_message__pack
+                     (const Textsecure__SignalMessage   *message,
                       uint8_t             *out);
-size_t textsecure__whisper_message__pack_to_buffer
-                     (const Textsecure__WhisperMessage   *message,
+size_t textsecure__signal_message__pack_to_buffer
+                     (const Textsecure__SignalMessage   *message,
                       ProtobufCBuffer     *buffer);
-Textsecure__WhisperMessage *
-       textsecure__whisper_message__unpack
+Textsecure__SignalMessage *
+       textsecure__signal_message__unpack
                      (ProtobufCAllocator  *allocator,
                       size_t               len,
                       const uint8_t       *data);
-void   textsecure__whisper_message__free_unpacked
-                     (Textsecure__WhisperMessage *message,
+void   textsecure__signal_message__free_unpacked
+                     (Textsecure__SignalMessage *message,
                       ProtobufCAllocator *allocator);
-/* Textsecure__PreKeyWhisperMessage methods */
-void   textsecure__pre_key_whisper_message__init
-                     (Textsecure__PreKeyWhisperMessage         *message);
-size_t textsecure__pre_key_whisper_message__get_packed_size
-                     (const Textsecure__PreKeyWhisperMessage   *message);
-size_t textsecure__pre_key_whisper_message__pack
-                     (const Textsecure__PreKeyWhisperMessage   *message,
+/* Textsecure__PreKeySignalMessage methods */
+void   textsecure__pre_key_signal_message__init
+                     (Textsecure__PreKeySignalMessage         *message);
+size_t textsecure__pre_key_signal_message__get_packed_size
+                     (const Textsecure__PreKeySignalMessage   *message);
+size_t textsecure__pre_key_signal_message__pack
+                     (const Textsecure__PreKeySignalMessage   *message,
                       uint8_t             *out);
-size_t textsecure__pre_key_whisper_message__pack_to_buffer
-                     (const Textsecure__PreKeyWhisperMessage   *message,
+size_t textsecure__pre_key_signal_message__pack_to_buffer
+                     (const Textsecure__PreKeySignalMessage   *message,
                       ProtobufCBuffer     *buffer);
-Textsecure__PreKeyWhisperMessage *
-       textsecure__pre_key_whisper_message__unpack
+Textsecure__PreKeySignalMessage *
+       textsecure__pre_key_signal_message__unpack
                      (ProtobufCAllocator  *allocator,
                       size_t               len,
                       const uint8_t       *data);
-void   textsecure__pre_key_whisper_message__free_unpacked
-                     (Textsecure__PreKeyWhisperMessage *message,
+void   textsecure__pre_key_signal_message__free_unpacked
+                     (Textsecure__PreKeySignalMessage *message,
                       ProtobufCAllocator *allocator);
 /* Textsecure__KeyExchangeMessage methods */
 void   textsecure__key_exchange_message__init
@@ -214,13 +228,32 @@ Textsecure__SenderKeyDistributionMessage *
 void   textsecure__sender_key_distribution_message__free_unpacked
                      (Textsecure__SenderKeyDistributionMessage *message,
                       ProtobufCAllocator *allocator);
+/* Textsecure__DeviceConsistencyCodeMessage methods */
+void   textsecure__device_consistency_code_message__init
+                     (Textsecure__DeviceConsistencyCodeMessage         *message);
+size_t textsecure__device_consistency_code_message__get_packed_size
+                     (const Textsecure__DeviceConsistencyCodeMessage   *message);
+size_t textsecure__device_consistency_code_message__pack
+                     (const Textsecure__DeviceConsistencyCodeMessage   *message,
+                      uint8_t             *out);
+size_t textsecure__device_consistency_code_message__pack_to_buffer
+                     (const Textsecure__DeviceConsistencyCodeMessage   *message,
+                      ProtobufCBuffer     *buffer);
+Textsecure__DeviceConsistencyCodeMessage *
+       textsecure__device_consistency_code_message__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data);
+void   textsecure__device_consistency_code_message__free_unpacked
+                     (Textsecure__DeviceConsistencyCodeMessage *message,
+                      ProtobufCAllocator *allocator);
 /* --- per-message closures --- */
 
-typedef void (*Textsecure__WhisperMessage_Closure)
-                 (const Textsecure__WhisperMessage *message,
+typedef void (*Textsecure__SignalMessage_Closure)
+                 (const Textsecure__SignalMessage *message,
                   void *closure_data);
-typedef void (*Textsecure__PreKeyWhisperMessage_Closure)
-                 (const Textsecure__PreKeyWhisperMessage *message,
+typedef void (*Textsecure__PreKeySignalMessage_Closure)
+                 (const Textsecure__PreKeySignalMessage *message,
                   void *closure_data);
 typedef void (*Textsecure__KeyExchangeMessage_Closure)
                  (const Textsecure__KeyExchangeMessage *message,
@@ -231,17 +264,21 @@ typedef void (*Textsecure__SenderKeyMessage_Closure)
 typedef void (*Textsecure__SenderKeyDistributionMessage_Closure)
                  (const Textsecure__SenderKeyDistributionMessage *message,
                   void *closure_data);
+typedef void (*Textsecure__DeviceConsistencyCodeMessage_Closure)
+                 (const Textsecure__DeviceConsistencyCodeMessage *message,
+                  void *closure_data);
 
 /* --- services --- */
 
 
 /* --- descriptors --- */
 
-extern const ProtobufCMessageDescriptor textsecure__whisper_message__descriptor;
-extern const ProtobufCMessageDescriptor textsecure__pre_key_whisper_message__descriptor;
+extern const ProtobufCMessageDescriptor textsecure__signal_message__descriptor;
+extern const ProtobufCMessageDescriptor textsecure__pre_key_signal_message__descriptor;
 extern const ProtobufCMessageDescriptor textsecure__key_exchange_message__descriptor;
 extern const ProtobufCMessageDescriptor textsecure__sender_key_message__descriptor;
 extern const ProtobufCMessageDescriptor textsecure__sender_key_distribution_message__descriptor;
+extern const ProtobufCMessageDescriptor textsecure__device_consistency_code_message__descriptor;
 
 PROTOBUF_C__END_DECLS
 
diff --git a/libs/libaxolotl/src/axolotl.def b/libs/libaxolotl/src/axolotl.def
deleted file mode 100644
index 5f84f1369d..0000000000
--- a/libs/libaxolotl/src/axolotl.def
+++ /dev/null
@@ -1,55 +0,0 @@
-LIBRARY libaxolotl.mir
-
-EXPORTS
-   axolotl_type_ref
-   axolotl_type_unref
-   axolotl_buffer_alloc
-   axolotl_buffer_create
-   axolotl_buffer_copy
-   axolotl_buffer_append
-   axolotl_buffer_data
-   axolotl_buffer_len
-   axolotl_buffer_compare
-   axolotl_buffer_free
-   axolotl_buffer_bzero_free
-   axolotl_buffer_list_alloc
-   axolotl_buffer_list_push
-   axolotl_buffer_list_size
-   axolotl_buffer_list_free
-   axolotl_int_list_alloc
-   axolotl_int_list_push_back
-   axolotl_int_list_size
-   axolotl_int_list_at
-   axolotl_int_list_free
-   axolotl_context_create
-   axolotl_context_set_crypto_provider
-   axolotl_context_set_locking_functions
-   axolotl_context_set_log_function
-   axolotl_context_destroy
-   axolotl_store_context_create
-   axolotl_store_context_set_session_store
-   axolotl_store_context_set_pre_key_store
-   axolotl_store_context_set_signed_pre_key_store
-   axolotl_store_context_set_identity_key_store
-   axolotl_store_context_set_sender_key_store
-   axolotl_store_context_destroy
-   axolotl_session_load_session
-   axolotl_session_get_sub_device_sessions
-   axolotl_session_store_session
-   axolotl_session_contains_session
-   axolotl_session_delete_session
-   axolotl_session_delete_all_sessions
-   axolotl_pre_key_load_key
-   axolotl_pre_key_store_key
-   axolotl_pre_key_contains_key
-   axolotl_pre_key_remove_key
-   axolotl_signed_pre_key_load_key
-   axolotl_signed_pre_key_store_key
-   axolotl_signed_pre_key_contains_key
-   axolotl_signed_pre_key_remove_key
-   axolotl_identity_get_key_pair
-   axolotl_identity_get_local_registration_id
-   axolotl_identity_save_identity
-   axolotl_identity_is_trusted_identity
-   axolotl_sender_key_store_key
-   axolotl_sender_key_load_key
diff --git a/libs/libaxolotl/src/axolotl_internal.h b/libs/libaxolotl/src/axolotl_internal.h
deleted file mode 100644
index 3ecddbda7f..0000000000
--- a/libs/libaxolotl/src/axolotl_internal.h
+++ /dev/null
@@ -1,82 +0,0 @@
-#ifndef AXOLOTL_INTERNAL_H
-#define AXOLOTL_INTERNAL_H
-
-#include "protobuf-c/protobuf-c.h"
-#include "axolotl.h"
-#include "LocalStorageProtocol.pb-c.h"
-
-struct axolotl_type_base {
-    unsigned int ref_count;
-    void (*destroy)(axolotl_type_base *instance);
-};
-
-void axolotl_type_init(axolotl_type_base *instance,
-        void (*destroy_func)(axolotl_type_base *instance));
-
-#define AXOLOTL_INIT(instance, destroy_func) axolotl_type_init((axolotl_type_base *)instance, destroy_func)
-
-struct axolotl_buffer {
-    size_t len;
-    uint8_t data[];
-};
-
-struct axolotl_context {
-    axolotl_crypto_provider crypto_provider;
-    void (*lock)(void *user_data);
-    void (*unlock)(void *user_data);
-    void (*log)(int level, const char *message, size_t len, void *user_data);
-    void *user_data;
-};
-
-int axolotl_crypto_random(axolotl_context *context, uint8_t *data, size_t len);
-int axolotl_hmac_sha256_init(axolotl_context *context, void **hmac_context, const uint8_t *key, size_t key_len);
-int axolotl_hmac_sha256_update(axolotl_context *context, void *hmac_context, const uint8_t *data, size_t data_len);
-int axolotl_hmac_sha256_final(axolotl_context *context, void *hmac_context, axolotl_buffer **output);
-void axolotl_hmac_sha256_cleanup(axolotl_context *context, void *hmac_context);
-
-int axolotl_sha512_digest(axolotl_context *context, axolotl_buffer **output, const uint8_t *data, size_t data_len);
-
-int axolotl_encrypt(axolotl_context *context,
-        axolotl_buffer **output,
-        int cipher,
-        const uint8_t *key, size_t key_len,
-        const uint8_t *iv, size_t iv_len,
-        const uint8_t *plaintext, size_t plaintext_len);
-
-int axolotl_decrypt(axolotl_context *context,
-        axolotl_buffer **output,
-        int cipher,
-        const uint8_t *key, size_t key_len,
-        const uint8_t *iv, size_t iv_len,
-        const uint8_t *ciphertext, size_t ciphertext_len);
-
-void axolotl_lock(axolotl_context *context);
-void axolotl_unlock(axolotl_context *context);
-void axolotl_log(axolotl_context *context, int level, const char *format, ...);
-void axolotl_explicit_bzero(void *v, size_t n);
-int axolotl_constant_memcmp(const void *s1, const void *s2, size_t n);
-
-/*------------------------------------------------------------------------*/
-
-/*
- * Functions used for internal protocol buffers serialization support.
- */
-
-int ec_public_key_serialize_protobuf(ProtobufCBinaryData *buffer, const ec_public_key *key);
-int ec_private_key_serialize_protobuf(ProtobufCBinaryData *buffer, const ec_private_key *key);
-
-int ratchet_chain_key_get_key_protobuf(const ratchet_chain_key *chain_key, ProtobufCBinaryData *buffer);
-int ratchet_root_key_get_key_protobuf(const ratchet_root_key *root_key, ProtobufCBinaryData *buffer);
-
-int session_state_serialize_prepare(session_state *state, Textsecure__SessionStructure *session_structure);
-void session_state_serialize_prepare_free(Textsecure__SessionStructure *session_structure);
-int session_state_deserialize_protobuf(session_state **state, Textsecure__SessionStructure *session_structure, axolotl_context *global_context);
-
-int sender_key_state_serialize_prepare(sender_key_state *state, Textsecure__SenderKeyStateStructure *state_structure);
-void sender_key_state_serialize_prepare_free(Textsecure__SenderKeyStateStructure *state_structure);
-int sender_key_state_deserialize_protobuf(sender_key_state **state, Textsecure__SenderKeyStateStructure *state_structure, axolotl_context *global_context);
-
-void axolotl_str_serialize_protobuf(ProtobufCBinaryData *buffer, const char *str);
-char *axolotl_str_deserialize_protobuf(ProtobufCBinaryData *buffer);
-
-#endif /* AXOLOTL_INTERNAL_H */
diff --git a/libs/libaxolotl/src/curve.c b/libs/libaxolotl/src/curve.c
index 241a5b983b..2b666376b9 100644..100755
--- a/libs/libaxolotl/src/curve.c
+++ b/libs/libaxolotl/src/curve.c
@@ -7,50 +7,58 @@
 
 #include "curve25519/curve25519-donna.h"
 #include "curve25519/ed25519/additions/curve_sigs.h"
-#include "axolotl_internal.h"
+#include "curve25519/ed25519/additions/vxeddsa.h"
+#include "signal_protocol_internal.h"
+#include "utarray.h"
 
 #define DJB_TYPE 0x05
 #define DJB_KEY_LEN 32
+#define VRF_VERIFY_LEN 32
 
 struct ec_public_key
 {
-    axolotl_type_base base;
+    signal_type_base base;
     uint8_t data[DJB_KEY_LEN];
 };
 
 struct ec_private_key
 {
-    axolotl_type_base base;
+    signal_type_base base;
     uint8_t data[DJB_KEY_LEN];
 };
 
 struct ec_key_pair
 {
-    axolotl_type_base base;
+    signal_type_base base;
     ec_public_key *public_key;
     ec_private_key *private_key;
 };
 
-int curve_decode_point(ec_public_key **public_key, const uint8_t *key_data, size_t key_len, axolotl_context *global_context)
+struct ec_public_key_list
+{
+    UT_array *values;
+};
+
+int curve_decode_point(ec_public_key **public_key, const uint8_t *key_data, size_t key_len, signal_context *global_context)
 {
     ec_public_key *key = 0;
 
     if(key_len > 0 && key_data[0] != DJB_TYPE) {
-        axolotl_log(global_context, AX_LOG_ERROR, "Invalid key type: %d", key_data[0]);
-        return AX_ERR_INVALID_KEY;
+        signal_log(global_context, SG_LOG_ERROR, "Invalid key type: %d", key_data[0]);
+        return SG_ERR_INVALID_KEY;
     }
 
     if(key_len != DJB_KEY_LEN + 1) {
-        axolotl_log(global_context, AX_LOG_ERROR, "Invalid key length: %d", key_len);
-        return AX_ERR_INVALID_KEY;
+        signal_log(global_context, SG_LOG_ERROR, "Invalid key length: %d", key_len);
+        return SG_ERR_INVALID_KEY;
     }
 
     key = malloc(sizeof(ec_public_key));
     if(!key) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
-    AXOLOTL_INIT(key, ec_public_key_destroy);
+    SIGNAL_INIT(key, ec_public_key_destroy);
 
     memcpy(key->data, key_data + 1, DJB_KEY_LEN);
 
@@ -71,7 +79,7 @@ int ec_public_key_compare(const ec_public_key *key1, const ec_public_key *key2)
         return 1;
     }
     else {
-        return axolotl_constant_memcmp(key1->data, key2->data, DJB_KEY_LEN);
+        return signal_constant_memcmp(key1->data, key2->data, DJB_KEY_LEN);
     }
 }
 
@@ -91,17 +99,21 @@ int ec_public_key_memcmp(const ec_public_key *key1, const ec_public_key *key2)
     }
 }
 
-int ec_public_key_serialize(axolotl_buffer **buffer, const ec_public_key *key)
+int ec_public_key_serialize(signal_buffer **buffer, const ec_public_key *key)
 {
-    axolotl_buffer *buf = 0;
+    signal_buffer *buf = 0;
     uint8_t *data = 0;
 
-    buf = axolotl_buffer_alloc(sizeof(uint8_t) * (DJB_KEY_LEN + 1));
+    if(!key) {
+        return SG_ERR_INVAL;
+    }
+
+    buf = signal_buffer_alloc(sizeof(uint8_t) * (DJB_KEY_LEN + 1));
     if(!buf) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
-    data = axolotl_buffer_data(buf);
+    data = signal_buffer_data(buf);
     data[0] = DJB_TYPE;
     memcpy(data + 1, key->data, DJB_KEY_LEN);
 
@@ -121,7 +133,7 @@ int ec_public_key_serialize_protobuf(ProtobufCBinaryData *buffer, const ec_publi
     len = sizeof(uint8_t) * (DJB_KEY_LEN + 1);
     data = malloc(len);
     if(!data) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
     data[0] = DJB_TYPE;
@@ -132,27 +144,27 @@ int ec_public_key_serialize_protobuf(ProtobufCBinaryData *buffer, const ec_publi
     return 0;
 }
 
-void ec_public_key_destroy(axolotl_type_base *type)
+void ec_public_key_destroy(signal_type_base *type)
 {
     ec_public_key *public_key = (ec_public_key *)type;
     free(public_key);
 }
 
-int curve_decode_private_point(ec_private_key **private_key, const uint8_t *key_data, size_t key_len, axolotl_context *global_context)
+int curve_decode_private_point(ec_private_key **private_key, const uint8_t *key_data, size_t key_len, signal_context *global_context)
 {
     ec_private_key *key = 0;
 
     if(key_len != DJB_KEY_LEN) {
-        axolotl_log(global_context, AX_LOG_ERROR, "Invalid key length: %d", key_len);
-        return AX_ERR_INVALID_KEY;
+        signal_log(global_context, SG_LOG_ERROR, "Invalid key length: %d", key_len);
+        return SG_ERR_INVALID_KEY;
     }
 
     key = malloc(sizeof(ec_private_key));
     if(!key) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
-    AXOLOTL_INIT(key, ec_private_key_destroy);
+    SIGNAL_INIT(key, ec_private_key_destroy);
 
     memcpy(key->data, key_data, DJB_KEY_LEN);
 
@@ -173,21 +185,21 @@ int ec_private_key_compare(const ec_private_key *key1, const ec_private_key *key
         return 1;
     }
     else {
-        return axolotl_constant_memcmp(key1->data, key2->data, DJB_KEY_LEN);
+        return signal_constant_memcmp(key1->data, key2->data, DJB_KEY_LEN);
     }
 }
 
-int ec_private_key_serialize(axolotl_buffer **buffer, const ec_private_key *key)
+int ec_private_key_serialize(signal_buffer **buffer, const ec_private_key *key)
 {
-    axolotl_buffer *buf = 0;
+    signal_buffer *buf = 0;
     uint8_t *data = 0 ;
     
-    buf = axolotl_buffer_alloc(sizeof(uint8_t) * DJB_KEY_LEN);
+    buf = signal_buffer_alloc(sizeof(uint8_t) * DJB_KEY_LEN);
     if(!buf) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
-    data = axolotl_buffer_data(buf);
+    data = signal_buffer_data(buf);
     memcpy(data, key->data, DJB_KEY_LEN);
 
     *buffer = buf;
@@ -206,7 +218,7 @@ int ec_private_key_serialize_protobuf(ProtobufCBinaryData *buffer, const ec_priv
     len = sizeof(uint8_t) * DJB_KEY_LEN;
     data = malloc(len);
     if(!data) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
     memcpy(data, key->data, DJB_KEY_LEN);
@@ -216,10 +228,10 @@ int ec_private_key_serialize_protobuf(ProtobufCBinaryData *buffer, const ec_priv
     return 0;
 }
 
-void ec_private_key_destroy(axolotl_type_base *type)
+void ec_private_key_destroy(signal_type_base *type)
 {
     ec_private_key *private_key = (ec_private_key *)type;
-    axolotl_explicit_bzero(private_key, sizeof(ec_private_key));
+    signal_explicit_bzero(private_key, sizeof(ec_private_key));
     free(private_key);
 }
 
@@ -227,14 +239,14 @@ int ec_key_pair_create(ec_key_pair **key_pair, ec_public_key *public_key, ec_pri
 {
     ec_key_pair *result = malloc(sizeof(ec_key_pair));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
-    AXOLOTL_INIT(result, ec_key_pair_destroy);
+    SIGNAL_INIT(result, ec_key_pair_destroy);
     result->public_key = public_key;
-    AXOLOTL_REF(public_key);
+    SIGNAL_REF(public_key);
     result->private_key = private_key;
-    AXOLOTL_REF(private_key);
+    SIGNAL_REF(private_key);
 
     *key_pair = result;
 
@@ -251,15 +263,15 @@ ec_private_key *ec_key_pair_get_private(const ec_key_pair *key_pair)
     return key_pair->private_key;
 }
 
-void ec_key_pair_destroy(axolotl_type_base *type)
+void ec_key_pair_destroy(signal_type_base *type)
 {
     ec_key_pair *key_pair = (ec_key_pair *)type;
-    AXOLOTL_UNREF(key_pair->public_key);
-    AXOLOTL_UNREF(key_pair->private_key);
+    SIGNAL_UNREF(key_pair->public_key);
+    SIGNAL_UNREF(key_pair->private_key);
     free(key_pair);
 }
 
-int curve_generate_private_key(axolotl_context *context, ec_private_key **private_key)
+int curve_generate_private_key(signal_context *context, ec_private_key **private_key)
 {
     int result = 0;
     ec_private_key *key = 0;
@@ -268,13 +280,13 @@ int curve_generate_private_key(axolotl_context *context, ec_private_key **privat
 
     key = malloc(sizeof(ec_private_key));
     if(!key) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    AXOLOTL_INIT(key, ec_private_key_destroy);
+    SIGNAL_INIT(key, ec_private_key_destroy);
 
-    result = axolotl_crypto_random(context, key->data, DJB_KEY_LEN);
+    result = signal_crypto_random(context, key->data, DJB_KEY_LEN);
     if(result < 0) {
         goto complete;
     }
@@ -283,9 +295,16 @@ int curve_generate_private_key(axolotl_context *context, ec_private_key **privat
     key->data[31] &= 127;
     key->data[31] |= 64;
 
-    *private_key = key;
-
 complete:
+    if(result < 0) {
+        if(key) {
+            SIGNAL_UNREF(key);
+        }
+    }
+    else {
+        *private_key = key;
+    }
+
     return result;
 }
 
@@ -296,10 +315,10 @@ int curve_generate_public_key(ec_public_key **public_key, const ec_private_key *
 
     ec_public_key *key = malloc(sizeof(ec_public_key));
     if(!key) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
-    AXOLOTL_INIT(key, ec_public_key_destroy);
+    SIGNAL_INIT(key, ec_public_key_destroy);
 
     result = curve25519_donna(key->data, private_key->data, basepoint);
 
@@ -309,13 +328,13 @@ int curve_generate_public_key(ec_public_key **public_key, const ec_private_key *
     }
     else {
         if(key) {
-            AXOLOTL_UNREF(key);
+            SIGNAL_UNREF(key);
         }
-        return AX_ERR_UNKNOWN;
+        return SG_ERR_UNKNOWN;
     }
 }
 
-int curve_generate_key_pair(axolotl_context *context, ec_key_pair **key_pair)
+int curve_generate_key_pair(signal_context *context, ec_key_pair **key_pair)
 {
     int result = 0;
     ec_key_pair *pair_result = 0;
@@ -341,15 +360,15 @@ int curve_generate_key_pair(axolotl_context *context, ec_key_pair **key_pair)
 
 complete:
     if(key_public) {
-        AXOLOTL_UNREF(key_public);
+        SIGNAL_UNREF(key_public);
     }
     if(key_private) {
-        AXOLOTL_UNREF(key_private);
+        SIGNAL_UNREF(key_private);
     }
 
     if(result < 0) {
         if(pair_result) {
-            AXOLOTL_UNREF(pair_result);
+            SIGNAL_UNREF(pair_result);
         }
     }
     else {
@@ -359,18 +378,110 @@ complete:
     return result;
 }
 
+ec_public_key_list *ec_public_key_list_alloc()
+{
+    ec_public_key_list *list = malloc(sizeof(ec_public_key_list));
+    if(!list) {
+        return 0;
+    }
+    memset(list, 0, sizeof(ec_public_key_list));
+    utarray_new(list->values, &ut_ptr_icd);
+    return list;
+}
+
+ec_public_key_list *ec_public_key_list_copy(const ec_public_key_list *list)
+{
+    ec_public_key_list *result = 0;
+    unsigned int size;
+    unsigned int i;
+    ec_public_key **p;
+
+    result = ec_public_key_list_alloc();
+    if(!result) {
+        return 0;
+    }
+
+    size = utarray_len(list->values);
+
+    utarray_reserve(result->values, size);
+
+    for (i = 0; i < size; i++) {
+        p = (ec_public_key **)utarray_eltptr(list->values, i);
+        ec_public_key_list_push_back(result, *p);
+    }
+
+    return result;
+}
+
+void ec_public_key_list_push_back(ec_public_key_list *list, ec_public_key *value)
+{
+    assert(list);
+    assert(value);
+    SIGNAL_REF(value);
+    utarray_push_back(list->values, &value);
+}
+
+unsigned int ec_public_key_list_size(const ec_public_key_list *list)
+{
+    assert(list);
+    return utarray_len(list->values);
+}
+
+ec_public_key *ec_public_key_list_at(const ec_public_key_list *list, unsigned int index)
+{
+    ec_public_key **value = 0;
+
+    assert(list);
+    assert(index < utarray_len(list->values));
+
+    value = (ec_public_key **)utarray_eltptr(list->values, index);
+
+    assert(*value);
+
+    return *value;
+}
+
+int ec_public_key_list_sort_comparator(const void *a, const void *b)
+{
+    const ec_public_key *key1 = *((const ec_public_key **)a);
+    const ec_public_key *key2 = *((const ec_public_key **)b);
+    return ec_public_key_memcmp(key1, key2);
+}
+
+void ec_public_key_list_sort(ec_public_key_list *list)
+{
+    assert(list);
+    utarray_sort(list->values, ec_public_key_list_sort_comparator);
+}
+
+void ec_public_key_list_free(ec_public_key_list *list)
+{
+    unsigned int size;
+    unsigned int i;
+    ec_public_key **p;
+    if(list) {
+        size = utarray_len(list->values);
+        for (i = 0; i < size; i++) {
+            p = (ec_public_key **)utarray_eltptr(list->values, i);
+            SIGNAL_UNREF(*p);
+        }
+        utarray_free(list->values);
+        free(list);
+    }
+}
+
 int curve_calculate_agreement(uint8_t **shared_key_data, const ec_public_key *public_key, const ec_private_key *private_key)
 {
     uint8_t *key = 0;
     int result = 0;
 
     if(!public_key || !private_key) {
-        return AX_ERR_INVALID_KEY;
+        return SG_ERR_INVALID_KEY;
     }
 
     key = malloc(DJB_KEY_LEN);
     if(!key) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
     result = curve25519_donna(key, private_key->data, public_key->data);
@@ -383,7 +494,7 @@ int curve_calculate_agreement(uint8_t **shared_key_data, const ec_public_key *pu
         if(key) {
             free(key);
         }
-        return AX_ERR_UNKNOWN;
+        return SG_ERR_UNKNOWN;
     }
 }
 
@@ -392,38 +503,38 @@ int curve_verify_signature(const ec_public_key *signing_key,
         const uint8_t *signature_data, size_t signature_len)
 {
     if(signature_len != 64) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
 
     return curve25519_verify(signature_data, signing_key->data, message_data, message_len) == 0;
 }
 
-int curve_calculate_signature(axolotl_context *context,
-        axolotl_buffer **signature,
+int curve_calculate_signature(signal_context *context,
+        signal_buffer **signature,
         const ec_private_key *signing_key,
         const uint8_t *message_data, size_t message_len)
 {
     int result = 0;
     uint8_t random_data[CURVE_SIGNATURE_LEN];
-    axolotl_buffer *buffer = 0;
+    signal_buffer *buffer = 0;
 
-    result = axolotl_crypto_random(context, random_data, sizeof(random_data));
+    result = signal_crypto_random(context, random_data, sizeof(random_data));
     if(result < 0) {
         goto complete;
     }
 
-    buffer = axolotl_buffer_alloc(CURVE_SIGNATURE_LEN);
+    buffer = signal_buffer_alloc(CURVE_SIGNATURE_LEN);
     if(!buffer) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    result = curve25519_sign(axolotl_buffer_data(buffer), signing_key->data, message_data, message_len, random_data);
+    result = curve25519_sign(signal_buffer_data(buffer), signing_key->data, message_data, message_len, random_data);
 
 complete:
     if(result < 0) {
         if(buffer) {
-            axolotl_buffer_free(buffer);
+            signal_buffer_free(buffer);
         }
     }
     else {
@@ -431,3 +542,83 @@ complete:
     }
     return result;
 }
+
+int curve_verify_vrf_signature(signal_context *context,
+        signal_buffer **vrf_output,
+        const ec_public_key *signing_key,
+        const uint8_t *message_data, size_t message_len,
+        const uint8_t *signature_data, size_t signature_len)
+{
+    int result = 0;
+    signal_buffer *buffer = 0;
+
+    if(!signing_key) {
+        return SG_ERR_INVAL;
+    }
+
+    if(!message_data || !signature_data || signature_len != 96) {
+        signal_log(context, SG_LOG_ERROR, "Invalid message or signature format");
+        return SG_ERR_VRF_SIG_VERIF_FAILED;
+    }
+
+    buffer = signal_buffer_alloc(VRF_VERIFY_LEN);
+    if(!buffer) {
+        result = SG_ERR_NOMEM;
+        goto complete;
+    }
+
+    result = vxed25519_verify(signal_buffer_data(buffer),
+            signature_data, signing_key->data,
+            message_data, message_len);
+    if(result != 0) {
+        signal_log(context, SG_LOG_ERROR, "Invalid signature");
+        result = SG_ERR_VRF_SIG_VERIF_FAILED;
+    }
+
+complete:
+    if(result < 0) {
+        signal_buffer_free(buffer);
+    }
+    else {
+        *vrf_output = buffer;
+    }
+    return result;
+}
+
+int curve_calculate_vrf_signature(signal_context *context,
+        signal_buffer **signature,
+        const ec_private_key *signing_key,
+        const uint8_t *message_data, size_t message_len)
+{
+    int result = 0;
+    uint8_t random_data[64];
+    signal_buffer *buffer = 0;
+
+    result = signal_crypto_random(context, random_data, sizeof(random_data));
+    if(result < 0) {
+        goto complete;
+    }
+
+    buffer = signal_buffer_alloc(VRF_SIGNATURE_LEN);
+    if(!buffer) {
+        result = SG_ERR_NOMEM;
+        goto complete;
+    }
+
+    result = vxed25519_sign(signal_buffer_data(buffer),
+            signing_key->data,
+            message_data, message_len, random_data);
+    if(result != 0) {
+        signal_log(context, SG_LOG_ERROR, "Signature failed!");
+        result = SG_ERR_UNKNOWN;
+    }
+
+complete:
+    if(result < 0) {
+        signal_buffer_free(buffer);
+    }
+    else {
+        *signature = buffer;
+    }
+    return result;
+}
diff --git a/libs/libaxolotl/src/curve.h b/libs/libaxolotl/src/curve.h
index 851d05a319..a4c4488d37 100644
--- a/libs/libaxolotl/src/curve.h
+++ b/libs/libaxolotl/src/curve.h
@@ -3,15 +3,16 @@
 
 #include <stdint.h>
 #include <stddef.h>
-#include "axolotl_types.h"
+#include "signal_protocol_types.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 #define CURVE_SIGNATURE_LEN 64
+#define VRF_SIGNATURE_LEN 96
 
-int curve_decode_point(ec_public_key **public_key, const uint8_t *key_data, size_t key_len, axolotl_context *global_context);
+int curve_decode_point(ec_public_key **public_key, const uint8_t *key_data, size_t key_len, signal_context *global_context);
 int ec_public_key_compare(const ec_public_key *key1, const ec_public_key *key2);
 int ec_public_key_memcmp(const ec_public_key *key1, const ec_public_key *key2);
 
@@ -22,15 +23,15 @@ int ec_public_key_memcmp(const ec_public_key *key1, const ec_public_key *key2);
  *
  * @param buffer Pointer to a buffer that will be allocated by this function
  *     and filled with the contents of the key. The caller is responsible for
- *     freeing this buffer with axolotl_buffer_free().
+ *     freeing this buffer with signal_buffer_free().
  * @param key Key to serialize
  * @return 0 on success, negative on failure
  */
-int ec_public_key_serialize(axolotl_buffer **buffer, const ec_public_key *key);
+int ec_public_key_serialize(signal_buffer **buffer, const ec_public_key *key);
 
-void ec_public_key_destroy(axolotl_type_base *type);
+void ec_public_key_destroy(signal_type_base *type);
 
-int curve_decode_private_point(ec_private_key **private_key, const uint8_t *key_data, size_t key_len, axolotl_context *global_context);
+int curve_decode_private_point(ec_private_key **private_key, const uint8_t *key_data, size_t key_len, signal_context *global_context);
 int ec_private_key_compare(const ec_private_key *key1, const ec_private_key *key2);
 
 /**
@@ -40,29 +41,148 @@ int ec_private_key_compare(const ec_private_key *key1, const ec_private_key *key
  *
  * @param buffer Pointer to a buffer that will be allocated by this function
  *     and filled with the contents of the key. The caller is responsible for
- *     freeing this buffer with axolotl_buffer_free().
+ *     freeing this buffer with signal_buffer_free().
  * @param key Key to serialize
  * @return 0 on success, negative on failure
  */
-int ec_private_key_serialize(axolotl_buffer **buffer, const ec_private_key *key);
+int ec_private_key_serialize(signal_buffer **buffer, const ec_private_key *key);
 
-void ec_private_key_destroy(axolotl_type_base *type);
+void ec_private_key_destroy(signal_type_base *type);
 
 int ec_key_pair_create(ec_key_pair **key_pair, ec_public_key *public_key, ec_private_key *private_key);
 ec_public_key *ec_key_pair_get_public(const ec_key_pair *key_pair);
 ec_private_key *ec_key_pair_get_private(const ec_key_pair *key_pair);
-void ec_key_pair_destroy(axolotl_type_base *type);
+void ec_key_pair_destroy(signal_type_base *type);
 
-int curve_generate_private_key(axolotl_context *context, ec_private_key **private_key);
+int curve_generate_private_key(signal_context *context, ec_private_key **private_key);
 int curve_generate_public_key(ec_public_key **public_key, const ec_private_key *private_key);
-int curve_generate_key_pair(axolotl_context *context, ec_key_pair **key_pair);
 
+/**
+ * Generates a Curve25519 keypair.
+ *
+ * @param key_pair Set to a randomly generated Curve25519 keypair on success.
+ * @return 0 on success, negative on failure
+ */
+int curve_generate_key_pair(signal_context *context, ec_key_pair **key_pair);
+
+/**
+ * Allocate a new ec_public_key list
+ *
+ * @return pointer to the allocated list, or 0 on failure
+ */
+ec_public_key_list *ec_public_key_list_alloc(void);
+
+/**
+ * Copy an ec_public_key list
+ *
+ * @return pointer to the copy of the list, or 0 on failure
+ */
+ec_public_key_list *ec_public_key_list_copy(const ec_public_key_list *list);
+
+/**
+ * Push a new value onto the end of the list
+ *
+ * @param list the list
+ * @param value the value to push
+ */
+void ec_public_key_list_push_back(ec_public_key_list *list, ec_public_key *value);
+
+/**
+ * Gets the size of the list.
+ *
+ * @param list the list
+ * @return the size of the list
+ */
+unsigned int ec_public_key_list_size(const ec_public_key_list *list);
+
+/**
+ * Gets the value of the element at a particular index in the list
+ *
+ * @param list the list
+ * @param index the index within the list
+ * @return the value
+ */
+ec_public_key *ec_public_key_list_at(const ec_public_key_list *list, unsigned int index);
+
+/**
+ * Sorts the list based on a comparison of the key data.
+ *
+ * @param list the list
+ */
+void ec_public_key_list_sort(ec_public_key_list *list);
+
+/**
+ * Free the ec_public_key list
+ * @param list the list to free
+ */
+void ec_public_key_list_free(ec_public_key_list *list);
+
+/**
+ * Calculates an ECDH agreement.
+ *
+ * @param shared_key_data Set to a 32-byte shared secret on success.
+ * @param public_key The Curve25519 (typically remote party's) public key.
+ * @param private_key The Curve25519 (typically yours) private key.
+ * @return 0 on success, negative on failure
+ */
 int curve_calculate_agreement(uint8_t **shared_key_data, const ec_public_key *public_key, const ec_private_key *private_key);
+
+/**
+ * Verify a Curve25519 signature.
+ *
+ * @param signing_key The Curve25519 public key the signature belongs to.
+ * @param message_data The message that was signed.
+ * @param message_len The length of the message that was signed.
+ * @param signature_data The signature to verify.
+ * @param signature_len The length of the signature to verify.
+ * @return 1 if valid, 0 if invalid, negative on failure
+ */
 int curve_verify_signature(const ec_public_key *signing_key,
         const uint8_t *message_data, size_t message_len,
         const uint8_t *signature_data, size_t signature_len);
-int curve_calculate_signature(axolotl_context *context,
-        axolotl_buffer **signature,
+
+/**
+ * Calculates a Curve25519 signature.
+ *
+ * @param signature Set to a 64-byte signature on success.
+ * @param signing_key The private Curve25519 key to create the signature with.
+ * @param message_data The message to sign.
+ * @param message_len The length of the message to sign.
+ * @return 0 on success, negative on failure
+ */
+int curve_calculate_signature(signal_context *context,
+        signal_buffer **signature,
+        const ec_private_key *signing_key,
+        const uint8_t *message_data, size_t message_len);
+
+/**
+ * Verify a Unique Curve25519 signature.
+ *
+ * @param vrf_output Set to VRF output on success
+ * @param signing_key The Curve25519 public key the unique signature belongs to.
+ * @param message_data The message that was signed.
+ * @param message_len The length of the message that was signed.
+ * @param signature_data The signature to verify.
+ * @param signature_len The length of the signature to verify.
+ * @return 1 if valid, 0 if invalid, negative on failure
+ */
+int curve_verify_vrf_signature(signal_context *context,
+        signal_buffer **vrf_output,
+        const ec_public_key *signing_key,
+        const uint8_t *message_data, size_t message_len,
+        const uint8_t *signature_data, size_t signature_len);
+
+/**
+ * Calculates a Unique Curve25519 signature.
+ *
+ * @param signature Set to a 96-byte signature on success.
+ * @param signing_key The private Curve25519 key to create the signature with.
+ * @param message_data The message to sign.
+ * @param message_len The length of the message to sign.
+ * @return 0 on success, negative on failure
+ */
+int curve_calculate_vrf_signature(signal_context *context,
+        signal_buffer **signature,
         const ec_private_key *signing_key,
         const uint8_t *message_data, size_t message_len);
 
diff --git a/libs/libaxolotl/src/curve25519/CMakeLists.txt b/libs/libaxolotl/src/curve25519/CMakeLists.txt
index 50eae030a6..54eb0944ed 100644
--- a/libs/libaxolotl/src/curve25519/CMakeLists.txt
+++ b/libs/libaxolotl/src/curve25519/CMakeLists.txt
@@ -1,65 +1,104 @@
 IF(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
-  SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-unused-variable -Wno-unused-function -Wno-shadow")
+    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-unused-variable -Wno-unused-function -Wno-shadow")
 ENDIF(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
 
 IF(CMAKE_COMPILER_IS_GNUCC)
-	SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-sign-compare -Wno-sign-conversion")
+    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-sign-compare")
+    IF(GCC_WARN_SIGN_CONVERSION)
+        SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-sign-conversion")
+    ENDIF(GCC_WARN_SIGN_CONVERSION)
 ENDIF(CMAKE_COMPILER_IS_GNUCC)
 
 IF(CMAKE_C_COMPILER_ID MATCHES "Clang")
-  SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-shorten-64-to-32")
+    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-shorten-64-to-32")
 ENDIF(CMAKE_C_COMPILER_ID MATCHES "Clang")
 
+include_directories(
+    ed25519/nacl_includes
+    ed25519/additions
+    ed25519/sha512
+    ed25519
+)
+
 set(curve25519_SRCS
-	curve25519-donna.c
+    curve25519-donna.c
 )
 
 set(ed25519_SRCS
-	ed25519/fe_0.c
-	ed25519/fe_1.c
-	ed25519/fe_add.c
-	ed25519/fe_cmov.c
-	ed25519/fe_copy.c
-	ed25519/fe_frombytes.c
-	ed25519/fe_invert.c
-	ed25519/fe_isnegative.c
-	ed25519/fe_isnonzero.c
-	ed25519/fe_mul.c
-	ed25519/fe_neg.c
-	ed25519/fe_pow22523.c
-	ed25519/fe_sq.c
-	ed25519/fe_sq2.c
-	ed25519/fe_sub.c
-	ed25519/fe_tobytes.c
-	ed25519/ge_add.c
-	ed25519/ge_double_scalarmult.c
-	ed25519/ge_frombytes.c
-	ed25519/ge_madd.c
-	ed25519/ge_msub.c
-	ed25519/ge_p1p1_to_p2.c
-	ed25519/ge_p1p1_to_p3.c
-	ed25519/ge_p2_0.c
-	ed25519/ge_p2_dbl.c
-	ed25519/ge_p3_0.c
-	ed25519/ge_p3_dbl.c
-	ed25519/ge_p3_to_cached.c
-	ed25519/ge_p3_to_p2.c
-	ed25519/ge_p3_tobytes.c
-	ed25519/ge_precomp_0.c
-	ed25519/ge_scalarmult_base.c
-	ed25519/ge_sub.c
-	ed25519/ge_tobytes.c
-	ed25519/open.c
-	ed25519/sc_muladd.c
-	ed25519/sc_reduce.c
-	ed25519/sign.c
-	ed25519/additions/compare.c
-	ed25519/additions/curve_sigs.c
-	ed25519/additions/sign_modified.c
-	ed25519/additions/zeroize.c
-	ed25519/additions/crypto_hash_sha512.h
-	ed25519/nacl_sha512/blocks.c
-	ed25519/nacl_sha512/hash.c
+    ed25519/fe_0.c
+    ed25519/fe_1.c
+    ed25519/fe_add.c
+    ed25519/fe_cmov.c
+    ed25519/fe_copy.c
+    ed25519/fe_frombytes.c
+    ed25519/fe_invert.c
+    ed25519/fe_isnegative.c
+    ed25519/fe_isnonzero.c
+    ed25519/fe_mul.c
+    ed25519/fe_neg.c
+    ed25519/fe_pow22523.c
+    ed25519/fe_sq.c
+    ed25519/fe_sq2.c
+    ed25519/fe_sub.c
+    ed25519/fe_tobytes.c
+    ed25519/ge_add.c
+    ed25519/ge_double_scalarmult.c
+    ed25519/ge_frombytes.c
+    ed25519/ge_madd.c
+    ed25519/ge_msub.c
+    ed25519/ge_p1p1_to_p2.c
+    ed25519/ge_p1p1_to_p3.c
+    ed25519/ge_p2_0.c
+    ed25519/ge_p2_dbl.c
+    ed25519/ge_p3_0.c
+    ed25519/ge_p3_dbl.c
+    ed25519/ge_p3_to_cached.c
+    ed25519/ge_p3_to_p2.c
+    ed25519/ge_p3_tobytes.c
+    ed25519/ge_precomp_0.c
+    ed25519/ge_scalarmult_base.c
+    ed25519/ge_sub.c
+    ed25519/ge_tobytes.c
+    ed25519/open.c
+    ed25519/sc_muladd.c
+    ed25519/sc_reduce.c
+    ed25519/sign.c
+    ed25519/additions/compare.c
+    ed25519/additions/curve_sigs.c
+    ed25519/additions/elligator.c
+    ed25519/additions/fe_isequal.c
+    ed25519/additions/fe_mont_rhs.c
+    ed25519/additions/fe_montx_to_edy.c
+    ed25519/additions/fe_sqrt.c
+    ed25519/additions/ge_is_small_order.c
+    ed25519/additions/ge_isneutral.c
+    ed25519/additions/ge_montx_to_p2.c
+    ed25519/additions/ge_montx_to_p3.c
+    ed25519/additions/ge_neg.c
+    ed25519/additions/ge_p3_to_montx.c
+    ed25519/additions/ge_scalarmult.c
+    ed25519/additions/ge_scalarmult_cofactor.c
+    ed25519/additions/keygen.c
+    ed25519/additions/open_modified.c
+    ed25519/additions/sc_clamp.c
+    ed25519/additions/sc_cmov.c
+    ed25519/additions/sc_neg.c
+    ed25519/additions/sign_modified.c
+    ed25519/additions/uopen_modified.c
+    ed25519/additions/usign_modified.c
+    ed25519/additions/utility.c
+    ed25519/additions/vopen_modified.c
+    ed25519/additions/vsign_modified.c
+    ed25519/additions/vxeddsa.c
+    ed25519/additions/xeddsa.c
+    ed25519/additions/zeroize.c
+    ed25519/nacl_sha512/blocks.c
+    ed25519/nacl_sha512/hash.c
 )
 
 add_library(curve25519 OBJECT ${curve25519_SRCS} ${ed25519_SRCS})
+
+# Add -fPIC flag
+if(BUILD_SHARED_LIBS)
+    set_property(TARGET curve25519 PROPERTY POSITION_INDEPENDENT_CODE ON)
+endif()
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/crypto_additions.h b/libs/libaxolotl/src/curve25519/ed25519/additions/crypto_additions.h
new file mode 100644
index 0000000000..da4a1cd07b
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/crypto_additions.h
@@ -0,0 +1,69 @@
+
+#ifndef __CRYPTO_ADDITIONS__
+#define __CRYPTO_ADDITIONS__
+
+#include "crypto_uint32.h"
+#include "fe.h"
+#include "ge.h"
+
+#define MAX_MSG_LEN 256
+
+void sc_neg(unsigned char *b, const unsigned char *a);
+void sc_cmov(unsigned char* f, const unsigned char* g, unsigned char b);
+
+int fe_isequal(const fe f, const fe g);
+void fe_mont_rhs(fe v2, const fe u);
+void fe_montx_to_edy(fe y, const fe u);
+void fe_sqrt(fe b, const fe a);
+
+int ge_is_small_order(const ge_p3 *p);
+int ge_isneutral(const ge_p3* q);
+void ge_neg(ge_p3* r, const ge_p3 *p);
+void ge_montx_to_p3(ge_p3* p, const fe u, const unsigned char ed_sign_bit);
+void ge_p3_to_montx(fe u, const ge_p3 *p);
+void ge_scalarmult(ge_p3 *h, const unsigned char *a, const ge_p3 *A);
+void ge_scalarmult_cofactor(ge_p3 *q, const ge_p3 *p);
+
+void elligator(fe u, const fe r);
+void hash_to_point(ge_p3* p, const unsigned char* msg, const unsigned long in_len);
+void calculate_Bv(ge_p3* Bv,
+                  unsigned char* buf,
+                  const unsigned char* A,
+                  const unsigned char* msg, const unsigned long msg_len);
+void calculate_Bv_and_V(ge_p3* Bv,
+                        unsigned char* V,
+                        unsigned char* buf,
+                        const unsigned char* a,
+                        const unsigned char* A,
+                        const unsigned char* msg, const unsigned long msg_len);
+
+int crypto_sign_modified(
+  unsigned char *sm,
+  const unsigned char *m,unsigned long long mlen,
+  const unsigned char *sk, /* Curve/Ed25519 private key */
+  const unsigned char *pk, /* Ed25519 public key */
+  const unsigned char *random /* 64 bytes random to hash into nonce */
+  );
+
+int crypto_sign_open_modified(
+  unsigned char *m,
+  const unsigned char *sm,unsigned long long smlen,
+  const unsigned char *pk
+  );
+
+int crypto_vsign_modified(
+  unsigned char *sm,
+  const unsigned char *M,unsigned long Mlen,
+  const unsigned char *a, 
+  const unsigned char *A,
+  const unsigned char *random,
+  const ge_p3 *Bu,
+  const unsigned char *U);
+
+int crypto_vsign_open_modified(
+  unsigned char *m,
+  const unsigned char *sm,unsigned long long smlen,
+  const unsigned char *pk, const ge_p3* Bu);
+
+
+#endif
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/curve_sigs.c b/libs/libaxolotl/src/curve25519/ed25519/additions/curve_sigs.c
index 2a0aa54d4f..7a49b18aaa 100644
--- a/libs/libaxolotl/src/curve25519/ed25519/additions/curve_sigs.c
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/curve_sigs.c
@@ -3,36 +3,7 @@
 #include "ge.h"
 #include "curve_sigs.h"
 #include "crypto_sign.h"
-
-void curve25519_keygen(unsigned char* curve25519_pubkey_out,
-                       const unsigned char* curve25519_privkey_in)
-{
-  ge_p3 ed; /* Ed25519 pubkey point */
-  fe ed_y, ed_y_plus_one, one_minus_ed_y, inv_one_minus_ed_y;
-  fe mont_x;
-
-  /* Perform a fixed-base multiplication of the Edwards base point,
-     (which is efficient due to precalculated tables), then convert
-     to the Curve25519 montgomery-format public key.  In particular,
-     convert Curve25519's "montgomery" x-coordinate into an Ed25519
-     "edwards" y-coordinate:
-
-     mont_x = (ed_y + 1) / (1 - ed_y)
-     
-     with projective coordinates:
-
-     mont_x = (ed_y + ed_z) / (ed_z - ed_y)
-
-     NOTE: ed_y=1 is converted to mont_x=0 since fe_invert is mod-exp
-  */
-
-  ge_scalarmult_base(&ed, curve25519_privkey_in);
-  fe_add(ed_y_plus_one, ed.Y, ed.Z);
-  fe_sub(one_minus_ed_y, ed.Z, ed.Y);  
-  fe_invert(inv_one_minus_ed_y, one_minus_ed_y);
-  fe_mul(mont_x, ed_y_plus_one, inv_one_minus_ed_y);
-  fe_tobytes(curve25519_pubkey_out, mont_x);
-}
+#include "crypto_additions.h"
 
 int curve25519_sign(unsigned char* signature_out,
                     const unsigned char* curve25519_privkey,
@@ -71,18 +42,16 @@ int curve25519_verify(const unsigned char* signature,
                       const unsigned char* curve25519_pubkey,
                       const unsigned char* msg, const unsigned long msg_len)
 {
-  fe mont_x, mont_x_minus_one, mont_x_plus_one, inv_mont_x_plus_one;
-  fe one;
-  fe ed_y;
+  fe u;
+  fe y;
   unsigned char ed_pubkey[32];
-  unsigned long long some_retval;
-  unsigned char *verifybuf = NULL; /* working buffer */
+  unsigned char *verifybuf  = NULL; /* working buffer */
   unsigned char *verifybuf2 = NULL; /* working buffer #2 */
   int result;
 
   if ((verifybuf = malloc(msg_len + 64)) == 0) {
-    result = -1;
-    goto err;
+   result = -1;
+   goto err;
   }
 
   if ((verifybuf2 = malloc(msg_len + 64)) == 0) {
@@ -91,22 +60,18 @@ int curve25519_verify(const unsigned char* signature,
   }
 
   /* Convert the Curve25519 public key into an Ed25519 public key.  In
-     particular, convert Curve25519's "montgomery" x-coordinate into an
+     particular, convert Curve25519's "montgomery" x-coordinate (u) into an
      Ed25519 "edwards" y-coordinate:
 
-     ed_y = (mont_x - 1) / (mont_x + 1)
+     y = (u - 1) / (u + 1)
 
-     NOTE: mont_x=-1 is converted to ed_y=0 since fe_invert is mod-exp
+     NOTE: u=-1 is converted to y=0 since fe_invert is mod-exp
 
      Then move the sign bit into the pubkey from the signature.
   */
-  fe_frombytes(mont_x, curve25519_pubkey);
-  fe_1(one);
-  fe_sub(mont_x_minus_one, mont_x, one);
-  fe_add(mont_x_plus_one, mont_x, one);
-  fe_invert(inv_mont_x_plus_one, mont_x_plus_one);
-  fe_mul(ed_y, mont_x_minus_one, inv_mont_x_plus_one);
-  fe_tobytes(ed_pubkey, ed_y);
+  fe_frombytes(u, curve25519_pubkey);
+  fe_montx_to_edy(y, u);
+  fe_tobytes(ed_pubkey, y);
 
   /* Copy the sign bit, and remove it from signature */
   ed_pubkey[31] &= 0x7F;  /* bit should be zero already, but just in case */
@@ -120,9 +85,8 @@ int curve25519_verify(const unsigned char* signature,
   /* The below call has a strange API: */
   /* verifybuf = R || S || message */
   /* verifybuf2 = internal to next call gets a copy of verifybuf, S gets 
-     replaced with pubkey for hashing, then the whole thing gets zeroized
-     (if bad sig), or contains a copy of msg (good sig) */
-  result = crypto_sign_open(verifybuf2, &some_retval, verifybuf, 64 + msg_len, ed_pubkey);
+     replaced with pubkey for hashing */
+  result = crypto_sign_open_modified(verifybuf2, verifybuf, 64 + msg_len, ed_pubkey);
 
   err:
 
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/curve_sigs.h b/libs/libaxolotl/src/curve25519/ed25519/additions/curve_sigs.h
index b3dbad0155..a2d819aef0 100644
--- a/libs/libaxolotl/src/curve25519/ed25519/additions/curve_sigs.h
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/curve_sigs.h
@@ -2,47 +2,16 @@
 #ifndef __CURVE_SIGS_H__
 #define __CURVE_SIGS_H__
 
-void curve25519_keygen(unsigned char* curve25519_pubkey_out, /* 32 bytes */
-                       const unsigned char* curve25519_privkey_in); /* 32 bytes */
-
 /* returns 0 on success */
 int curve25519_sign(unsigned char* signature_out, /* 64 bytes */
                      const unsigned char* curve25519_privkey, /* 32 bytes */
-                     const unsigned char* msg, const unsigned long msg_len,
+                     const unsigned char* msg, const unsigned long msg_len, /* <= 256 bytes */
                      const unsigned char* random); /* 64 bytes */
 
 /* returns 0 on success */
 int curve25519_verify(const unsigned char* signature, /* 64 bytes */
                       const unsigned char* curve25519_pubkey, /* 32 bytes */
-                      const unsigned char* msg, const unsigned long msg_len);
-
-/* helper function - modified version of crypto_sign() to use 
-   explicit private key.  In particular:
-
-   sk     : private key
-   pk     : public key
-   msg    : message
-   prefix : 0xFE || [0xFF]*31
-   random : 64 bytes random
-   q      : main subgroup order
-
-   The prefix is chosen to distinguish the two SHA512 uses below, since
-   prefix is an invalid encoding for R (it would encode a "field element"
-   of 2^255 - 2).  0xFF*32 is set aside for use in ECDH protocols, which
-   is why the first byte here ix 0xFE.
+                      const unsigned char* msg, const unsigned long msg_len); /* <= 256 bytes */
 
-   sig_nonce = SHA512(prefix || sk ||  msg || random) % q
-   R = g^sig_nonce
-   M = SHA512(R || pk || m)
-   S = sig_nonce + (m * sk)
-   signature = (R || S)
- */
-int crypto_sign_modified(
-  unsigned char *sm,
-  const unsigned char *m,unsigned long long mlen,
-  const unsigned char *sk, /* Curve/Ed25519 private key */
-  const unsigned char *pk, /* Ed25519 public key */
-  const unsigned char *random /* 64 bytes random to hash into nonce */
-  );
 
 #endif
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/elligator.c b/libs/libaxolotl/src/curve25519/ed25519/additions/elligator.c
new file mode 100644
index 0000000000..8a8131ff2f
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/elligator.c
@@ -0,0 +1,111 @@
+#include <string.h>
+#include "fe.h"
+#include "ge.h"
+#include "crypto_uint32.h"
+#include "crypto_hash_sha512.h"
+#include "crypto_additions.h"
+
+unsigned int legendre_is_nonsquare(fe in)
+{
+  fe temp;
+  fe_pow22523(temp, in);  /* temp = in^((q-5)/8) */
+  fe_sq(temp, temp);      /*        in^((q-5)/4) */ 
+  fe_sq(temp, temp);      /*        in^((q-5)/2) */
+  fe_mul(temp, temp, in); /*        in^((q-3)/2) */
+  fe_mul(temp, temp, in); /*        in^((q-1)/2) */
+
+  /* temp is now the Legendre symbol:
+   * 1  = square
+   * 0  = input is zero
+   * -1 = nonsquare
+   */
+  unsigned char bytes[32];
+  fe_tobytes(bytes, temp);
+  return 1 & bytes[31];
+}
+
+void elligator(fe u, const fe r)
+{
+  /* r = input
+   * x = -A/(1+2r^2)                # 2 is nonsquare
+   * e = (x^3 + Ax^2 + x)^((q-1)/2) # legendre symbol
+   * if e == 1 (square) or e == 0 (because x == 0 and 2r^2 + 1 == 0)
+   *   u = x
+   * if e == -1 (nonsquare)
+   *   u = -x - A
+   */
+  fe A, one, twor2, twor2plus1, twor2plus1inv;
+  fe x, e, Atemp, uneg;
+  unsigned int nonsquare;
+
+  fe_1(one);
+  fe_0(A);
+  A[0] = 486662;                         /* A = 486662 */
+
+  fe_sq2(twor2, r);                      /* 2r^2 */
+  fe_add(twor2plus1, twor2, one);        /* 1+2r^2 */
+  fe_invert(twor2plus1inv, twor2plus1);  /* 1/(1+2r^2) */
+  fe_mul(x, twor2plus1inv, A);           /* A/(1+2r^2) */
+  fe_neg(x, x);                          /* x = -A/(1+2r^2) */
+
+  fe_mont_rhs(e, x);                     /* e = x^3 + Ax^2 + x */
+  nonsquare = legendre_is_nonsquare(e); 
+
+  fe_0(Atemp);
+  fe_cmov(Atemp, A, nonsquare);          /* 0, or A if nonsquare */
+  fe_add(u, x, Atemp);                   /* x, or x+A if nonsquare */ 
+  fe_neg(uneg, u);                       /* -x, or -x-A if nonsquare */
+  fe_cmov(u, uneg, nonsquare);           /* x, or -x-A if nonsquare */
+}
+
+void hash_to_point(ge_p3* p, const unsigned char* in, const unsigned long in_len)
+{
+  unsigned char hash[64];
+  fe h, u;
+  unsigned char sign_bit;
+  ge_p3 p3;
+
+  crypto_hash_sha512(hash, in, in_len);
+
+  /* take the high bit as Edwards sign bit */
+  sign_bit = (hash[31] & 0x80) >> 7; 
+  hash[31] &= 0x7F;
+  fe_frombytes(h, hash); 
+  elligator(u, h);
+
+  ge_montx_to_p3(&p3, u, sign_bit);
+  ge_scalarmult_cofactor(p, &p3);
+}
+
+
+void calculate_Bv(ge_p3* Bv, 
+                 unsigned char* buf,
+                 const unsigned char* A,
+                 const unsigned char* msg, const unsigned long msg_len)
+{
+  int count;
+
+  /* Calculate SHA512(label(2) || A || msg) */
+  buf[0] = 0xFD;
+  for (count = 1; count < 32; count++)
+    buf[count] = 0xFF;
+  memmove(buf+32, A, 32);
+  memmove(buf+64, msg, msg_len); 
+
+  hash_to_point(Bv, buf, 64 + msg_len);
+}
+
+
+void calculate_Bv_and_V(ge_p3* Bv, 
+                       unsigned char* V, 
+                       unsigned char* buf,
+                       const unsigned char* a,
+                       const unsigned char* A,
+                       const unsigned char* msg, const unsigned long msg_len)
+{
+  ge_p3 p3;
+
+  calculate_Bv(Bv, buf, A, msg, msg_len);
+  ge_scalarmult(&p3, a, Bv);
+  ge_p3_tobytes(V, &p3);
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/fe_isequal.c b/libs/libaxolotl/src/curve25519/ed25519/additions/fe_isequal.c
new file mode 100644
index 0000000000..67c5d33c96
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/fe_isequal.c
@@ -0,0 +1,14 @@
+#include "fe.h"
+#include "crypto_verify_32.h"
+
+/*
+return 1 if f == g
+return 0 if f != g
+*/
+
+int fe_isequal(const fe f, const fe g)
+{
+  fe h;
+  fe_sub(h, f, g);
+  return 1 ^ (1 & (fe_isnonzero(h) >> 8));
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/fe_mont_rhs.c b/libs/libaxolotl/src/curve25519/ed25519/additions/fe_mont_rhs.c
new file mode 100644
index 0000000000..bc8393620c
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/fe_mont_rhs.c
@@ -0,0 +1,17 @@
+#include "fe.h"
+
+void fe_mont_rhs(fe v2, fe u) {
+  fe A, one;
+  fe u2, Au, inner;
+
+  fe_1(one);
+  fe_0(A);
+  A[0] = 486662;                     /* A = 486662 */
+
+  fe_sq(u2, u);                      /* u^2 */
+  fe_mul(Au, A, u);                  /* Au */
+  fe_add(inner, u2, Au);             /* u^2 + Au */
+  fe_add(inner, inner, one);         /* u^2 + Au + 1 */
+  fe_mul(v2, u, inner);              /* u(u^2 + Au + 1) */
+}
+
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/fe_montx_to_edy.c b/libs/libaxolotl/src/curve25519/ed25519/additions/fe_montx_to_edy.c
new file mode 100644
index 0000000000..b0f8c63276
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/fe_montx_to_edy.c
@@ -0,0 +1,19 @@
+
+#include "fe.h"
+#include "crypto_additions.h"
+
+void fe_montx_to_edy(fe y, const fe u)
+{
+  /* 
+     y = (u - 1) / (u + 1)
+
+     NOTE: u=-1 is converted to y=0 since fe_invert is mod-exp
+  */
+  fe one, um1, up1;
+
+  fe_1(one);
+  fe_sub(um1, u, one);
+  fe_add(up1, u, one);
+  fe_invert(up1, up1);
+  fe_mul(y, um1, up1);
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/fe_sqrt.c b/libs/libaxolotl/src/curve25519/ed25519/additions/fe_sqrt.c
new file mode 100644
index 0000000000..906d38b93e
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/fe_sqrt.c
@@ -0,0 +1,50 @@
+#include <assert.h>
+#include "fe.h"
+#include "crypto_additions.h"
+
+/* sqrt(-1) */
+static unsigned char i_bytes[32] = {
+  0xb0, 0xa0, 0x0e, 0x4a, 0x27, 0x1b, 0xee, 0xc4, 
+  0x78, 0xe4, 0x2f, 0xad, 0x06, 0x18, 0x43, 0x2f, 
+  0xa7, 0xd7, 0xfb, 0x3d, 0x99, 0x00, 0x4d, 0x2b, 
+  0x0b, 0xdf, 0xc1, 0x4f, 0x80, 0x24, 0x83, 0x2b
+};
+
+/* Preconditions: a is square or zero */
+
+void fe_sqrt(fe out, const fe a)
+{
+  fe exp, b, b2, bi, i;
+
+  fe_frombytes(i, i_bytes); 
+  fe_pow22523(exp, a);             /* b = a^(q-5)/8        */
+
+  /* PRECONDITION: legendre symbol == 1 (square) or 0 (a == zero) */
+#ifndef NDEBUG
+  fe legendre, zero, one;
+
+  fe_sq(legendre, exp);            /* in^((q-5)/4) */ 
+  fe_sq(legendre, legendre);       /* in^((q-5)/2) */
+  fe_mul(legendre, legendre, a);   /* in^((q-3)/2) */
+  fe_mul(legendre, legendre, a);   /* in^((q-1)/2) */
+  
+  fe_0(zero);
+  fe_1(one);
+  assert(fe_isequal(legendre, zero) || fe_isequal(legendre, one));
+#endif
+
+  fe_mul(b, a, exp);       /* b = a * a^(q-5)/8    */
+  fe_sq(b2, b);            /* b^2 = a * a^(q-1)/4  */
+
+  /* note b^4 == a^2, so b^2 == a or -a
+   * if b^2 != a, multiply it by sqrt(-1) */
+  fe_mul(bi, b, i);  
+  fe_cmov(b, bi, 1 ^ fe_isequal(b2, a));
+  fe_copy(out, b);
+
+  /* PRECONDITION: out^2 == a */ 
+#ifndef NDEBUG
+  fe_sq(b2, out);
+  assert(fe_isequal(a, b2));
+#endif
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/ge_is_small_order.c b/libs/libaxolotl/src/curve25519/ed25519/additions/ge_is_small_order.c
new file mode 100644
index 0000000000..845941be2a
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/ge_is_small_order.c
@@ -0,0 +1,30 @@
+#include "crypto_additions.h"
+#include "ge.h"
+#include "utility.h"
+#include "stdio.h"
+
+/*
+return 1 if f == g
+return 0 if f != g
+*/
+
+int ge_is_small_order(const ge_p3 *p)
+{
+  ge_p1p1 p1p1;
+  ge_p2 p2;
+  fe zero;
+
+  ge_p3_dbl(&p1p1, p);
+  ge_p1p1_to_p2(&p2, &p1p1);
+
+  ge_p2_dbl(&p1p1, &p2);
+  ge_p1p1_to_p2(&p2, &p1p1);
+
+  ge_p2_dbl(&p1p1, &p2);
+  ge_p1p1_to_p2(&p2, &p1p1);
+
+  fe_0(zero);
+
+  /* Check if 8*p == neutral element == (0, 1) */
+  return (fe_isequal(p2.X, zero) & fe_isequal(p2.Y, p2.Z));
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/ge_isneutral.c b/libs/libaxolotl/src/curve25519/ed25519/additions/ge_isneutral.c
new file mode 100644
index 0000000000..d40e443682
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/ge_isneutral.c
@@ -0,0 +1,16 @@
+#include "crypto_additions.h"
+#include "ge.h"
+
+/*
+return 1 if p is the neutral point
+return 0 otherwise
+*/
+
+int ge_isneutral(const ge_p3 *p)
+{
+  fe zero;
+  fe_0(zero);
+
+  /* Check if p == neutral element == (0, 1) */
+  return (fe_isequal(p->X, zero) & fe_isequal(p->Y, p->Z));
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/ge_montx_to_p2.c b/libs/libaxolotl/src/curve25519/ed25519/additions/ge_montx_to_p2.c
new file mode 100644
index 0000000000..d123d03580
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/ge_montx_to_p2.c
@@ -0,0 +1,69 @@
+#include "fe.h"
+#include "ge.h"
+#include "assert.h"
+#include "crypto_additions.h"
+#include "utility.h"
+
+/* sqrt(-(A+2)) */
+static unsigned char A_bytes[32] = {
+  0x06, 0x7e, 0x45, 0xff, 0xaa, 0x04, 0x6e, 0xcc, 
+  0x82, 0x1a, 0x7d, 0x4b, 0xd1, 0xd3, 0xa1, 0xc5, 
+  0x7e, 0x4f, 0xfc, 0x03, 0xdc, 0x08, 0x7b, 0xd2, 
+  0xbb, 0x06, 0xa0, 0x60, 0xf4, 0xed, 0x26, 0x0f
+};
+
+void ge_montx_to_p2(ge_p2* p, const fe u, const unsigned char ed_sign_bit)
+{
+  fe x, y, A, v, v2, iv, nx;
+
+  fe_frombytes(A, A_bytes); 
+
+  /* given u, recover edwards y */
+  /* given u, recover v */
+  /* given u and v, recover edwards x */
+
+  fe_montx_to_edy(y, u);       /* y = (u - 1) / (u + 1) */
+
+  fe_mont_rhs(v2, u);          /* v^2 = u(u^2 + Au + 1) */
+  fe_sqrt(v, v2);              /* v = sqrt(v^2) */
+
+  fe_mul(x, u, A);             /* x = u * sqrt(-(A+2)) */
+  fe_invert(iv, v);            /* 1/v */
+  fe_mul(x, x, iv);            /* x = (u/v) * sqrt(-(A+2)) */
+
+  fe_neg(nx, x);               /* negate x to match sign bit */
+  fe_cmov(x, nx, fe_isnegative(x) ^ ed_sign_bit);
+
+  fe_copy(p->X, x);
+  fe_copy(p->Y, y);
+  fe_1(p->Z);
+
+ /* POSTCONDITION: check that p->X and p->Y satisfy the Ed curve equation */
+ /* -x^2 + y^2 = 1 + dx^2y^2 */
+#ifndef NDEBUG
+  {
+  fe one, d, x2, y2, x2y2, dx2y2;
+
+  unsigned char dbytes[32] = {
+  0xa3, 0x78, 0x59, 0x13, 0xca, 0x4d, 0xeb, 0x75,
+  0xab, 0xd8, 0x41, 0x41, 0x4d, 0x0a, 0x70, 0x00,
+  0x98, 0xe8, 0x79, 0x77, 0x79, 0x40, 0xc7, 0x8c,
+  0x73, 0xfe, 0x6f, 0x2b, 0xee, 0x6c, 0x03, 0x52
+  };
+  
+  fe_frombytes(d, dbytes);
+  fe_1(one);
+  fe_sq(x2, p->X);                /* x^2 */
+  fe_sq(y2, p->Y);                /* y^2 */
+
+  fe_mul(dx2y2, x2, y2);           /* x^2y^2 */
+  fe_mul(dx2y2, dx2y2, d);         /* dx^2y^2 */
+  fe_add(dx2y2, dx2y2, one);       /* dx^2y^2 + 1 */
+
+  fe_neg(x2y2, x2);                /* -x^2 */
+  fe_add(x2y2, x2y2, y2);          /* -x^2 + y^2 */
+
+  assert(fe_isequal(x2y2, dx2y2));
+  }
+#endif
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/ge_montx_to_p3.c b/libs/libaxolotl/src/curve25519/ed25519/additions/ge_montx_to_p3.c
new file mode 100644
index 0000000000..7a716c5a72
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/ge_montx_to_p3.c
@@ -0,0 +1,70 @@
+#include "fe.h"
+#include "ge.h"
+#include "assert.h"
+#include "crypto_additions.h"
+#include "utility.h"
+
+/* sqrt(-(A+2)) */
+static unsigned char A_bytes[32] = {
+  0x06, 0x7e, 0x45, 0xff, 0xaa, 0x04, 0x6e, 0xcc, 
+  0x82, 0x1a, 0x7d, 0x4b, 0xd1, 0xd3, 0xa1, 0xc5, 
+  0x7e, 0x4f, 0xfc, 0x03, 0xdc, 0x08, 0x7b, 0xd2, 
+  0xbb, 0x06, 0xa0, 0x60, 0xf4, 0xed, 0x26, 0x0f
+};
+
+void ge_montx_to_p3(ge_p3* p, const fe u, const unsigned char ed_sign_bit)
+{
+  fe x, y, A, v, v2, iv, nx;
+
+  fe_frombytes(A, A_bytes); 
+
+  /* given u, recover edwards y */
+  /* given u, recover v */
+  /* given u and v, recover edwards x */
+
+  fe_montx_to_edy(y, u);       /* y = (u - 1) / (u + 1) */
+
+  fe_mont_rhs(v2, u);          /* v^2 = u(u^2 + Au + 1) */
+  fe_sqrt(v, v2);              /* v = sqrt(v^2) */
+
+  fe_mul(x, u, A);             /* x = u * sqrt(-(A+2)) */
+  fe_invert(iv, v);            /* 1/v */
+  fe_mul(x, x, iv);            /* x = (u/v) * sqrt(-(A+2)) */
+
+  fe_neg(nx, x);               /* negate x to match sign bit */
+  fe_cmov(x, nx, fe_isnegative(x) ^ ed_sign_bit);
+
+  fe_copy(p->X, x);
+  fe_copy(p->Y, y);
+  fe_1(p->Z);
+  fe_mul(p->T, p->X, p->Y);
+
+ /* POSTCONDITION: check that p->X and p->Y satisfy the Ed curve equation */
+ /* -x^2 + y^2 = 1 + dx^2y^2 */
+#ifndef NDEBUG
+  {
+  fe one, d, x2, y2, x2y2, dx2y2;
+
+  unsigned char dbytes[32] = {
+  0xa3, 0x78, 0x59, 0x13, 0xca, 0x4d, 0xeb, 0x75,
+  0xab, 0xd8, 0x41, 0x41, 0x4d, 0x0a, 0x70, 0x00,
+  0x98, 0xe8, 0x79, 0x77, 0x79, 0x40, 0xc7, 0x8c,
+  0x73, 0xfe, 0x6f, 0x2b, 0xee, 0x6c, 0x03, 0x52
+  };
+  
+  fe_frombytes(d, dbytes);
+  fe_1(one);
+  fe_sq(x2, p->X);                /* x^2 */
+  fe_sq(y2, p->Y);                /* y^2 */
+
+  fe_mul(dx2y2, x2, y2);           /* x^2y^2 */
+  fe_mul(dx2y2, dx2y2, d);         /* dx^2y^2 */
+  fe_add(dx2y2, dx2y2, one);       /* dx^2y^2 + 1 */
+
+  fe_neg(x2y2, x2);                /* -x^2 */
+  fe_add(x2y2, x2y2, y2);          /* -x^2 + y^2 */
+
+  assert(fe_isequal(x2y2, dx2y2));
+  }
+#endif
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/ge_neg.c b/libs/libaxolotl/src/curve25519/ed25519/additions/ge_neg.c
new file mode 100644
index 0000000000..d679713fe0
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/ge_neg.c
@@ -0,0 +1,15 @@
+#include "crypto_additions.h"
+#include "ge.h"
+
+/*
+return r = -p
+*/
+
+
+void ge_neg(ge_p3* r, const ge_p3 *p)
+{
+  fe_neg(r->X, p->X);
+  fe_copy(r->Y, p->Y);
+  fe_copy(r->Z, p->Z);
+  fe_neg(r->T, p->T);
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/ge_p3_to_montx.c b/libs/libaxolotl/src/curve25519/ed25519/additions/ge_p3_to_montx.c
new file mode 100644
index 0000000000..b539b2f17f
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/ge_p3_to_montx.c
@@ -0,0 +1,21 @@
+#include "fe.h"
+#include "crypto_additions.h"
+
+void ge_p3_to_montx(fe u, const ge_p3 *ed)
+{
+  /* 
+     u = (y + 1) / (1 - y)
+     or
+     u = (y + z) / (z - y)
+
+     NOTE: y=1 is converted to u=0 since fe_invert is mod-exp
+  */
+
+  fe y_plus_one, one_minus_y, inv_one_minus_y;
+
+  fe_add(y_plus_one, ed->Y, ed->Z);
+  fe_sub(one_minus_y, ed->Z, ed->Y);  
+  fe_invert(inv_one_minus_y, one_minus_y);
+  fe_mul(u, y_plus_one, inv_one_minus_y);
+}
+
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/ge_scalarmult.c b/libs/libaxolotl/src/curve25519/ed25519/additions/ge_scalarmult.c
new file mode 100644
index 0000000000..e4f741b8d8
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/ge_scalarmult.c
@@ -0,0 +1,140 @@
+#include "crypto_uint32.h"
+#include "ge.h"
+#include "crypto_additions.h"
+
+static unsigned char equal(signed char b,signed char c)
+{
+  unsigned char ub = b;
+  unsigned char uc = c;
+  unsigned char x = ub ^ uc; /* 0: yes; 1..255: no */
+  crypto_uint32 y = x; /* 0: yes; 1..255: no */
+  y -= 1; /* 4294967295: yes; 0..254: no */
+  y >>= 31; /* 1: yes; 0: no */
+  return y;
+}
+
+static unsigned char negative(signed char b)
+{
+  unsigned long long x = b; /* 18446744073709551361..18446744073709551615: yes; 0..255: no */
+  x >>= 63; /* 1: yes; 0: no */
+  return x;
+}
+
+static void cmov(ge_cached *t,const ge_cached *u,unsigned char b)
+{
+  fe_cmov(t->YplusX,u->YplusX,b);
+  fe_cmov(t->YminusX,u->YminusX,b);
+  fe_cmov(t->Z,u->Z,b);
+  fe_cmov(t->T2d,u->T2d,b);
+}
+
+static void select(ge_cached *t,const ge_cached *pre, signed char b)
+{
+  ge_cached minust;
+  unsigned char bnegative = negative(b);
+  unsigned char babs = b - (((-bnegative) & b) << 1);
+
+  fe_1(t->YplusX);
+  fe_1(t->YminusX);
+  fe_1(t->Z);
+  fe_0(t->T2d);
+
+  cmov(t,pre+0,equal(babs,1));
+  cmov(t,pre+1,equal(babs,2));
+  cmov(t,pre+2,equal(babs,3));
+  cmov(t,pre+3,equal(babs,4));
+  cmov(t,pre+4,equal(babs,5));
+  cmov(t,pre+5,equal(babs,6));
+  cmov(t,pre+6,equal(babs,7));
+  cmov(t,pre+7,equal(babs,8));
+  fe_copy(minust.YplusX,t->YminusX);
+  fe_copy(minust.YminusX,t->YplusX);
+  fe_copy(minust.Z,t->Z);
+  fe_neg(minust.T2d,t->T2d);
+  cmov(t,&minust,bnegative);
+}
+
+/*
+h = a * B
+where a = a[0]+256*a[1]+...+256^31 a[31]
+B is the Ed25519 base point (x,4/5) with x positive.
+
+Preconditions:
+  a[31] <= 127
+*/
+
+void ge_scalarmult(ge_p3 *h, const unsigned char *a, const ge_p3 *A)
+{
+  signed char e[64];
+  signed char carry;
+  ge_p1p1 r;
+  ge_p2 s;
+  ge_p3 t0, t1, t2;
+  ge_cached t, pre[8];
+  int i;
+
+  for (i = 0;i < 32;++i) {
+    e[2 * i + 0] = (a[i] >> 0) & 15;
+    e[2 * i + 1] = (a[i] >> 4) & 15;
+  }
+  /* each e[i] is between 0 and 15 */
+  /* e[63] is between 0 and 7 */
+
+  carry = 0;
+  for (i = 0;i < 63;++i) {
+    e[i] += carry;
+    carry = e[i] + 8;
+    carry >>= 4;
+    e[i] -= carry << 4;
+  }
+  e[63] += carry;
+  /* each e[i] is between -8 and 8 */
+
+  // Precomputation:
+  ge_p3_to_cached(pre+0, A); // A
+
+  ge_p3_dbl(&r, A);
+  ge_p1p1_to_p3(&t0, &r);
+  ge_p3_to_cached(pre+1, &t0); // 2A
+
+  ge_add(&r, A, pre+1);
+  ge_p1p1_to_p3(&t1, &r);
+  ge_p3_to_cached(pre+2, &t1); // 3A
+
+  ge_p3_dbl(&r, &t0);
+  ge_p1p1_to_p3(&t0, &r);
+  ge_p3_to_cached(pre+3, &t0); // 4A
+
+  ge_add(&r, A, pre+3);
+  ge_p1p1_to_p3(&t2, &r);
+  ge_p3_to_cached(pre+4, &t2); // 5A
+
+  ge_p3_dbl(&r, &t1);
+  ge_p1p1_to_p3(&t1, &r);
+  ge_p3_to_cached(pre+5, &t1); // 6A
+
+  ge_add(&r, A, pre+5);
+  ge_p1p1_to_p3(&t1, &r);
+  ge_p3_to_cached(pre+6, &t1); // 7A
+
+  ge_p3_dbl(&r, &t0);
+  ge_p1p1_to_p3(&t0, &r);
+  ge_p3_to_cached(pre+7, &t0); // 8A
+
+  ge_p3_0(h);
+
+  for (i = 63;i > 0; i--) {
+    select(&t,pre,e[i]);
+    ge_add(&r, h, &t);
+    ge_p1p1_to_p2(&s,&r);
+
+    ge_p2_dbl(&r,&s); ge_p1p1_to_p2(&s,&r);
+    ge_p2_dbl(&r,&s); ge_p1p1_to_p2(&s,&r);
+    ge_p2_dbl(&r,&s); ge_p1p1_to_p2(&s,&r);
+    ge_p2_dbl(&r,&s); ge_p1p1_to_p3(h,&r);
+
+  }
+  select(&t,pre,e[0]);
+  ge_add(&r, h, &t);
+  ge_p1p1_to_p3(h,&r);
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/ge_scalarmult_cofactor.c b/libs/libaxolotl/src/curve25519/ed25519/additions/ge_scalarmult_cofactor.c
new file mode 100644
index 0000000000..6affbb05d5
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/ge_scalarmult_cofactor.c
@@ -0,0 +1,21 @@
+#include "crypto_additions.h"
+#include "ge.h"
+
+/*
+return 8 * p
+*/
+
+void ge_scalarmult_cofactor(ge_p3 *q, const ge_p3 *p)
+{
+  ge_p1p1 p1p1;
+  ge_p2 p2;
+
+  ge_p3_dbl(&p1p1, p);
+  ge_p1p1_to_p2(&p2, &p1p1);
+
+  ge_p2_dbl(&p1p1, &p2);
+  ge_p1p1_to_p2(&p2, &p1p1);
+
+  ge_p2_dbl(&p1p1, &p2);
+  ge_p1p1_to_p3(q, &p1p1);
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/keygen.c b/libs/libaxolotl/src/curve25519/ed25519/additions/keygen.c
new file mode 100644
index 0000000000..de7cdcd598
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/keygen.c
@@ -0,0 +1,21 @@
+#include "ge.h"
+#include "keygen.h"
+#include "crypto_additions.h"
+
+void curve25519_keygen(unsigned char* curve25519_pubkey_out,
+                       const unsigned char* curve25519_privkey_in)
+{
+  /* Perform a fixed-base multiplication of the Edwards base point,
+     (which is efficient due to precalculated tables), then convert
+     to the Curve25519 montgomery-format public key.
+
+     NOTE: y=1 is converted to u=0 since fe_invert is mod-exp
+  */
+
+  ge_p3 ed; /* Ed25519 pubkey point */
+  fe u;
+
+  ge_scalarmult_base(&ed, curve25519_privkey_in);
+  ge_p3_to_montx(u, &ed);
+  fe_tobytes(curve25519_pubkey_out, u);
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/keygen.h b/libs/libaxolotl/src/curve25519/ed25519/additions/keygen.h
new file mode 100644
index 0000000000..e86e7c5582
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/keygen.h
@@ -0,0 +1,12 @@
+
+#ifndef __KEYGEN_H__
+#define __KEYGEN_H__
+
+/* Sets and clears bits to make a random 32 bytes into a private key */
+void sc_clamp(unsigned char* a);
+
+/* The private key should be 32 random bytes "clamped" by sc_clamp() */
+void curve25519_keygen(unsigned char* curve25519_pubkey_out, /* 32 bytes */
+                       const unsigned char* curve25519_privkey_in); /* 32 bytes */
+
+#endif
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/open_modified.c b/libs/libaxolotl/src/curve25519/ed25519/additions/open_modified.c
new file mode 100644
index 0000000000..a156098191
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/open_modified.c
@@ -0,0 +1,45 @@
+#include <string.h>
+#include "crypto_sign.h"
+#include "crypto_hash_sha512.h"
+#include "crypto_verify_32.h"
+#include "ge.h"
+#include "sc.h"
+#include "crypto_additions.h"
+
+int crypto_sign_open_modified(
+  unsigned char *m,
+  const unsigned char *sm,unsigned long long smlen,
+  const unsigned char *pk
+)
+{
+  unsigned char pkcopy[32];
+  unsigned char rcopy[32];
+  unsigned char scopy[32];
+  unsigned char h[64];
+  unsigned char rcheck[32];
+  ge_p3 A;
+  ge_p2 R;
+
+  if (smlen < 64) goto badsig;
+  if (sm[63] & 224) goto badsig; /* strict parsing of s */
+  if (ge_frombytes_negate_vartime(&A,pk) != 0) goto badsig;
+
+  memmove(pkcopy,pk,32);
+  memmove(rcopy,sm,32);
+  memmove(scopy,sm + 32,32);
+
+  memmove(m,sm,smlen);
+  memmove(m + 32,pkcopy,32);
+  crypto_hash_sha512(h,m,smlen);
+  sc_reduce(h);
+
+  ge_double_scalarmult_vartime(&R,h,&A,scopy);
+  ge_tobytes(rcheck,&R);
+
+  if (crypto_verify_32(rcheck,rcopy) == 0) {
+    return 0;
+  }
+
+badsig:
+  return -1;
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/sc_clamp.c b/libs/libaxolotl/src/curve25519/ed25519/additions/sc_clamp.c
new file mode 100644
index 0000000000..7788be9071
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/sc_clamp.c
@@ -0,0 +1,8 @@
+#include "crypto_additions.h"
+
+void sc_clamp(unsigned char* a)
+{
+  a[0] &= 248;
+  a[31] &= 127;
+  a[31] |= 64;
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/sc_cmov.c b/libs/libaxolotl/src/curve25519/ed25519/additions/sc_cmov.c
new file mode 100644
index 0000000000..443a5bb71e
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/sc_cmov.c
@@ -0,0 +1,21 @@
+#include "crypto_additions.h"
+
+/*
+Replace (f,g) with (g,g) if b == 1;
+replace (f,g) with (f,g) if b == 0.
+
+Preconditions: b in {0,1}.
+*/
+
+void sc_cmov(unsigned char* f, const unsigned char* g, unsigned char b)
+{
+  int count=32;
+  unsigned char x[32];
+  for (count=0; count < 32; count++)
+    x[count] = f[count] ^ g[count];
+  b = -b;
+  for (count=0; count < 32; count++)
+    x[count] &= b;
+  for (count=0; count < 32; count++)
+    f[count] = f[count] ^ x[count];
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/sc_neg.c b/libs/libaxolotl/src/curve25519/ed25519/additions/sc_neg.c
new file mode 100644
index 0000000000..ef407d405e
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/sc_neg.c
@@ -0,0 +1,25 @@
+#include <string.h>
+#include "crypto_additions.h"
+#include "sc.h"
+
+/* l = order of base point = 2^252 + 27742317777372353535851937790883648493 */
+
+/*
+static unsigned char l[32] = {0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58,
+                              0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14,
+                              0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                              0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0, 0x10};
+*/
+
+static unsigned char lminus1[32] = {0xec, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58,
+                                    0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14,
+                                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10};
+
+/* b = -a (mod l) */
+void sc_neg(unsigned char *b, const unsigned char *a)
+{
+  unsigned char zero[32];
+  memset(zero, 0, 32);
+  sc_muladd(b, lminus1, a, zero); /* b = (-1)a + 0   (mod l) */
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/sign_modified.c b/libs/libaxolotl/src/curve25519/ed25519/additions/sign_modified.c
index 61332e70e7..b2fb8c20d3 100644
--- a/libs/libaxolotl/src/curve25519/ed25519/additions/sign_modified.c
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/sign_modified.c
@@ -4,6 +4,7 @@
 #include "ge.h"
 #include "sc.h"
 #include "zeroize.h"
+#include "crypto_additions.h"
 
 /* NEW: Compare to pristine crypto_sign() 
    Uses explicit private key for nonce derivation and as scalar,
@@ -36,6 +37,7 @@ int crypto_sign_modified(
   memmove(sm + 32,pk,32);
 
   sc_reduce(nonce);
+  
   ge_scalarmult_base(&R,nonce);
   ge_p3_tobytes(sm,&R);
 
@@ -43,5 +45,9 @@ int crypto_sign_modified(
   sc_reduce(hram);
   sc_muladd(sm + 32,hram,sk,nonce); /* NEW: Use privkey directly */
 
+  /* Erase any traces of private scalar or
+     nonce left in the stack from sc_muladd */
+  zeroize_stack();
+  zeroize(nonce, 64);
   return 0;
 }
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/uopen_modified.c b/libs/libaxolotl/src/curve25519/ed25519/additions/uopen_modified.c
new file mode 100644
index 0000000000..412f8c4c9b
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/uopen_modified.c
@@ -0,0 +1,100 @@
+#include <string.h>
+#include "sc.h"
+#include "ge.h"
+#include "crypto_hash_sha512.h"
+#include "crypto_verify_32.h"
+#include "crypto_additions.h"
+#include "crypto_sign.h"
+
+int crypto_usign_open_modified(
+  unsigned char *m,unsigned long long *mlen,
+  const unsigned char *sm,unsigned long long smlen,
+  const unsigned char *pk, const ge_p3* Bu
+)
+{
+  ge_p3 U;
+  unsigned char h[64];
+  unsigned char s[64];
+  unsigned char strict[64];
+  ge_p3 A;
+  ge_p2 R;
+  unsigned char hcheck[64];
+  int count;
+
+  if (smlen < 96) goto badsig;
+  if (sm[63] & 224) goto badsig; /* strict parsing of h */
+  if (sm[95] & 224) goto badsig; /* strict parsing of s */
+
+  /* Load -A */
+  if (ge_frombytes_negate_vartime(&A,pk) != 0) goto badsig;
+
+  /* Load -U, h, s */
+  ge_frombytes_negate_vartime(&U, sm);
+  memset(h, 0, 64);
+  memset(s, 0, 64);
+  memmove(h, sm + 32, 32); 
+  memmove(s, sm + 64, 32); 
+
+  /* Insist that s and h are reduced scalars (strict parsing) */
+  memcpy(strict, h, 64);
+  sc_reduce(strict);
+  if (memcmp(strict, h, 32) != 0)
+    goto badsig;
+  memcpy(strict, s, 64);
+  sc_reduce(strict);
+  if (memcmp(strict, s, 32) != 0)
+    goto badsig;
+
+  /* Reject U (actually -U) if small order */
+  if (ge_is_small_order(&U))
+    goto badsig;
+
+  // R = sB + h(-A)
+  ge_double_scalarmult_vartime(&R,h,&A,s);
+
+  // Ru = sBu + h(-U)
+  ge_p3 sBu, hU;
+
+  // sBu
+  ge_scalarmult(&sBu, s, Bu);
+
+  // h(-U)
+  ge_scalarmult(&hU, h, &U);
+
+  // Ru = sBu + h(-U)
+  ge_p1p1 Rp1p1;
+  ge_p3 Ru;
+  ge_cached hUcached;
+  ge_p3_to_cached(&hUcached, &hU);
+  ge_add(&Rp1p1, &sBu, &hUcached);
+  ge_p1p1_to_p3(&Ru, &Rp1p1);
+
+
+  // Check h == SHA512(label(4) || A || U || R || Ru || M)
+  m[0] = 0xFB;
+  for (count = 1; count < 32; count++)
+    m[count] = 0xFF;
+  memmove(m+32, pk, 32);
+  /* undo the negation for U */
+  fe_neg(U.X, U.X);
+  fe_neg(U.T, U.T);
+  ge_p3_tobytes(m+64, &U);
+  ge_tobytes(m+96, &R);
+  ge_p3_tobytes(m+128, &Ru);
+  memmove(m+160, sm+96, smlen - 96);
+
+  crypto_hash_sha512(hcheck, m, smlen + 64);
+  sc_reduce(hcheck);
+
+  if (crypto_verify_32(hcheck, h) == 0) {
+    memmove(m,m + 64,smlen - 64);
+    memset(m + smlen - 64,0,64);
+    *mlen = smlen - 64;
+    return 0;
+  }
+
+badsig:
+  *mlen = -1;
+  memset(m,0,smlen);
+  return -1;
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/usign_modified.c b/libs/libaxolotl/src/curve25519/ed25519/additions/usign_modified.c
new file mode 100644
index 0000000000..3bbd871b7a
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/usign_modified.c
@@ -0,0 +1,62 @@
+#include <string.h>
+#include "crypto_sign.h"
+#include "crypto_hash_sha512.h"
+#include "ge.h"
+#include "sc.h"
+#include "zeroize.h"
+#include "crypto_additions.h"
+
+/* NEW: Compare to pristine crypto_sign() 
+   Uses explicit private key for nonce derivation and as scalar,
+   instead of deriving both from a master key.
+*/
+int crypto_usign_modified(
+  unsigned char *sm,
+  const unsigned char *M,unsigned long Mlen,
+  const unsigned char *a, 
+  const unsigned char *A,
+  const unsigned char *random,
+  const ge_p3 *Bu,
+  const unsigned char *U
+)
+{
+  unsigned char r[64];
+  unsigned char h[64];
+  ge_p3 R, Ru;
+  int count=0;
+
+  /* r = SHA512(label(3) || a || U || random(64)) */
+  sm[0] = 0xFC;
+  for (count = 1; count < 32; count++)
+    sm[count] = 0xFF;
+
+  memmove(sm + 32, a, 32); /* Use privkey directly for nonce derivation */
+  memmove(sm + 64, U, 32);
+
+  memmove(sm + 96, random, 64); /* Add suffix of random data */
+  crypto_hash_sha512(r, sm, 160);
+
+  sc_reduce(r);
+  ge_scalarmult_base(&R, r);
+  ge_scalarmult(&Ru, r, Bu);
+
+  /* h = SHA512(label(4) || A || U || R || Ru || M) */
+  sm[0] = 0xFB;
+  memmove(sm + 32, A, 32);
+  memmove(sm + 64, U, 32);
+  ge_p3_tobytes(sm+96, &R);
+  ge_p3_tobytes(sm+128, &Ru);
+  memmove(sm + 160, M, Mlen);
+
+  crypto_hash_sha512(h, sm, Mlen + 160);
+  sc_reduce(h);
+
+  memmove(sm, h, 32);               /* Write h */
+  sc_muladd(sm + 32, h, a, r);      /* Write s */
+
+  /* Erase any traces of private scalar or
+     nonce left in the stack from sc_muladd. */
+  zeroize_stack();
+  zeroize(r, 64);
+  return 0;
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/utility.c b/libs/libaxolotl/src/curve25519/ed25519/additions/utility.c
new file mode 100644
index 0000000000..c59099a9e3
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/utility.c
@@ -0,0 +1,29 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include "utility.h"
+
+void print_vector(const char* name, const unsigned char* v) 
+{
+  int count;
+  printf("%s = \n", name);
+  for (count = 0; count < 32; count++)
+    printf("%02x ", v[count]);
+  printf("\n");
+}
+
+void print_bytes(const char* name, const unsigned char* v, int numbytes)
+{
+  int count;
+  printf("%s = \n", name);
+  for (count = 0; count < numbytes; count++)
+    printf("%02x ", v[count]);
+  printf("\n");
+}
+
+void print_fe(const char* name, const fe in)
+{
+  unsigned char bytes[32];
+  fe_tobytes(bytes, in);
+  print_vector(name, bytes);
+}
+
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/utility.h b/libs/libaxolotl/src/curve25519/ed25519/additions/utility.h
new file mode 100644
index 0000000000..35348782df
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/utility.h
@@ -0,0 +1,11 @@
+
+#ifndef __UTILITY_H__
+#define __UTILITY_H__
+
+#include "fe.h"
+
+void print_vector(const char* name, const unsigned char* v);
+void print_bytes(const char* name, const unsigned char* v, int numbytes);
+void print_fe(const char* name, const fe in);
+
+#endif
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/vopen_modified.c b/libs/libaxolotl/src/curve25519/ed25519/additions/vopen_modified.c
new file mode 100644
index 0000000000..3dfc7fba6f
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/vopen_modified.c
@@ -0,0 +1,85 @@
+#include <string.h>
+#include "sc.h"
+#include "ge.h"
+#include "crypto_hash_sha512.h"
+#include "crypto_verify_32.h"
+#include "crypto_additions.h"
+#include "crypto_sign.h"
+
+int crypto_vsign_open_modified(
+  unsigned char *m,
+  const unsigned char *sm,unsigned long long smlen,
+  const unsigned char *pk, const ge_p3* Bv
+)
+{
+  ge_p3 Vneg, V, Aneg, A, c_V, c_A, h_Vneg, s_Bv;
+  unsigned char h[32];
+  unsigned char s[32];
+  ge_p2 R;
+  unsigned char hcheck[64];
+  unsigned char vrf_output[64];
+  int count;
+
+  if (smlen < 96) goto badsig;
+  if (sm[63] & 224) goto badsig; /* strict parsing of h */
+  if (sm[95] & 224) goto badsig; /* strict parsing of s */
+
+  /* Load -A */
+  if (ge_frombytes_negate_vartime(&Aneg,pk) != 0) goto badsig;
+
+  /* Load -V, h, s */
+  if (ge_frombytes_negate_vartime(&Vneg, sm) != 0) goto badsig;
+  memmove(h, sm + 32, 32); 
+  memmove(s, sm + 64, 32); 
+  if (h[31] & 224) goto badsig; /* strict parsing of h */
+  if (s[31] & 224) goto badsig; /* strict parsing of s */
+
+  ge_neg(&A, &Aneg);
+  ge_neg(&V, &Vneg);
+  ge_scalarmult_cofactor(&c_A, &A);
+  ge_scalarmult_cofactor(&c_V, &V);
+  if (ge_isneutral(&c_A) || ge_isneutral(&c_V) || ge_isneutral(Bv))
+    goto badsig;
+
+  // R = (s*B) + (h * -A))
+  ge_double_scalarmult_vartime(&R, h, &Aneg, s);
+
+  // s * Bv
+  ge_scalarmult(&s_Bv, s, Bv);
+
+  // h * -V
+  ge_scalarmult(&h_Vneg, h, &Vneg);
+
+  // Rv = (sc * Bv) + (hc * (-V))
+  ge_p1p1 Rp1p1;
+  ge_p3 Rv;
+  ge_cached h_Vnegcached;
+  ge_p3_to_cached(&h_Vnegcached, &h_Vneg);
+  ge_add(&Rp1p1, &s_Bv, &h_Vnegcached);
+  ge_p1p1_to_p3(&Rv, &Rp1p1);
+
+  // Check h == SHA512(label(4) || A || V || R || Rv || M)
+  m[0] = 0xFB;  // label 4
+  for (count = 1; count < 32; count++)
+    m[count] = 0xFF;
+  memmove(m+32, pk, 32);
+  ge_p3_tobytes(m+64, &V);
+  ge_tobytes(m+96, &R);
+  ge_p3_tobytes(m+128, &Rv);
+  memmove(m+160, sm+96, smlen - 96);
+
+  crypto_hash_sha512(hcheck, m, smlen + 64);
+  sc_reduce(hcheck);
+
+  if (crypto_verify_32(hcheck, h) == 0) {
+    ge_p3_tobytes(m+32, &c_V);
+    m[0] = 0xFA; // label 5
+    crypto_hash_sha512(vrf_output, m, 64);
+    memmove(m, vrf_output, 32);
+    return 0;
+  }
+
+badsig:
+  memset(m, 0, 32);
+  return -1;
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/vsign_modified.c b/libs/libaxolotl/src/curve25519/ed25519/additions/vsign_modified.c
new file mode 100644
index 0000000000..518b851d63
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/vsign_modified.c
@@ -0,0 +1,62 @@
+#include <string.h>
+#include "crypto_sign.h"
+#include "crypto_hash_sha512.h"
+#include "ge.h"
+#include "sc.h"
+#include "zeroize.h"
+#include "crypto_additions.h"
+
+/* NEW: Compare to pristine crypto_sign() 
+   Uses explicit private key for nonce derivation and as scalar,
+   instead of deriving both from a master key.
+*/
+int crypto_vsign_modified(
+  unsigned char *sm,
+  const unsigned char *M,unsigned long Mlen,
+  const unsigned char *a, 
+  const unsigned char *A,
+  const unsigned char *random,
+  const ge_p3 *Bv,
+  const unsigned char *V
+)
+{
+  unsigned char r[64];
+  unsigned char h[64];
+  ge_p3 R, Rv;
+  int count=0;
+
+  /* r = SHA512(label(3) || a || V || random(64)) */
+  sm[0] = 0xFC;
+  for (count = 1; count < 32; count++)
+    sm[count] = 0xFF;
+
+  memmove(sm + 32, a, 32); /* Use privkey directly for nonce derivation */
+  memmove(sm + 64, V, 32);
+
+  memmove(sm + 96, random, 64); /* Add suffix of random data */
+  crypto_hash_sha512(r, sm, 160);
+
+  sc_reduce(r);
+  ge_scalarmult_base(&R, r);
+  ge_scalarmult(&Rv, r, Bv);
+
+  /* h = SHA512(label(4) || A || V || R || Rv || M) */
+  sm[0] = 0xFB;
+  memmove(sm + 32, A, 32);
+  memmove(sm + 64, V, 32);
+  ge_p3_tobytes(sm+96, &R);
+  ge_p3_tobytes(sm+128, &Rv);
+  memmove(sm + 160, M, Mlen);
+
+  crypto_hash_sha512(h, sm, Mlen + 160);
+  sc_reduce(h);
+
+  memmove(sm, h, 32);               /* Write h */
+  sc_muladd(sm + 32, h, a, r);      /* Write s */
+
+  /* Erase any traces of private scalar or
+     nonce left in the stack from sc_muladd. */
+  zeroize_stack();
+  zeroize(r, 64);
+  return 0;
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/vxeddsa.c b/libs/libaxolotl/src/curve25519/ed25519/additions/vxeddsa.c
new file mode 100644
index 0000000000..802a73563d
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/vxeddsa.c
@@ -0,0 +1,91 @@
+#include <string.h>
+#include "ge.h"
+#include "crypto_additions.h"
+#include "zeroize.h"
+#include "vxeddsa.h"
+#include "crypto_verify_32.h"
+
+int vxed25519_sign(unsigned char* signature_out,
+                   const unsigned char* curve25519_privkey,
+                   const unsigned char* msg, const unsigned long msg_len,
+                   const unsigned char* random)
+{
+  unsigned char a[32], aneg[32];
+  unsigned char A[32];
+  ge_p3 Bv, ed_pubkey_point;
+  unsigned char sigbuf[MAX_MSG_LEN + 160]; /* working buffer */
+  unsigned char sign_bit = 0;
+
+  if (msg_len > MAX_MSG_LEN) {
+    memset(signature_out, 0, 96);
+    return -1;
+  }
+  /* Convert the Curve25519 privkey to an Ed25519 public key */
+  ge_scalarmult_base(&ed_pubkey_point, curve25519_privkey);
+  ge_p3_tobytes(A, &ed_pubkey_point);
+
+  /* Force Edwards sign bit to zero */
+  sign_bit = (A[31] & 0x80) >> 7;
+  memcpy(a, curve25519_privkey, 32);
+  sc_neg(aneg, a);
+  sc_cmov(a, aneg, sign_bit); 
+  A[31] &= 0x7F;
+  
+  calculate_Bv_and_V(&Bv, signature_out, sigbuf, a, A, msg, msg_len);
+
+  /* Perform an Ed25519 signature with explicit private key */
+  crypto_vsign_modified(sigbuf, msg, msg_len, a, A, random, &Bv, signature_out /*V*/);
+  memmove(signature_out+32, sigbuf, 64);
+
+  zeroize(a, 32);
+  zeroize(aneg, 32);
+  return 0;
+}
+
+int vxed25519_verify(unsigned char* vrf_out,
+                     const unsigned char* signature,
+                     const unsigned char* curve25519_pubkey,
+                     const unsigned char* msg, const unsigned long msg_len)
+{
+  fe u; 
+  fe y;
+  unsigned char ed_pubkey[32];
+  unsigned char strict[32];
+  unsigned char verifybuf[MAX_MSG_LEN + 160]; /* working buffer */
+  unsigned char verifybuf2[MAX_MSG_LEN + 160]; /* working buffer #2 ?? !!! */
+  ge_p3 Bv;
+
+  if (msg_len > MAX_MSG_LEN) {
+    return -1;
+  }
+
+  /* Convert the Curve25519 public key (u) into an Ed25519 public key.  
+
+     y = (u - 1) / (u + 1)
+
+     NOTE: u=-1 is converted to y=0 since fe_invert is mod-exp
+  */
+  fe_frombytes(u, curve25519_pubkey);
+  fe_tobytes(strict, u);
+  if (crypto_verify_32(strict, curve25519_pubkey) != 0)
+    return 0;
+  fe_montx_to_edy(y, u);
+  fe_tobytes(ed_pubkey, y);
+
+  calculate_Bv(&Bv, verifybuf, ed_pubkey, msg, msg_len);
+
+  memmove(verifybuf, signature, 96);
+  memmove(verifybuf+96, msg, msg_len);
+
+  /* Then perform a signature verification, return 0 on success */
+  /* The below call has a strange API: */
+  /* verifybuf = V || h || s || message */
+  /* verifybuf2 = used as buffer, gets the VRF output if success */
+  if (crypto_vsign_open_modified(verifybuf2, verifybuf, 96 + msg_len, ed_pubkey, &Bv) == 0) {
+    memmove(vrf_out, verifybuf2, 32);
+    return 0;
+  } else {
+    memset(vrf_out, 0, 32);
+    return -1;
+  }
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/vxeddsa.h b/libs/libaxolotl/src/curve25519/ed25519/additions/vxeddsa.h
new file mode 100644
index 0000000000..4e48844170
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/vxeddsa.h
@@ -0,0 +1,18 @@
+
+#ifndef __VXEDDSA_H__
+#define __VXEDDSA_H__
+
+/* returns 0 on success */
+int vxed25519_sign(unsigned char* signature_out, /* 96 bytes */
+                   const unsigned char* curve25519_privkey, /* 32 bytes */
+                   const unsigned char* msg, const unsigned long msg_len, /* <= 256 bytes */
+                   const unsigned char* random); /* 64 bytes */
+
+/* returns 0 on success */
+int vxed25519_verify(unsigned char* vrf_out, /* 32 bytes */
+                     const unsigned char* signature, /* 96 bytes */
+                     const unsigned char* curve25519_pubkey, /* 32 bytes */
+                     const unsigned char* msg, const unsigned long msg_len); /* <= 256 bytes */
+
+
+#endif
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/xeddsa.c b/libs/libaxolotl/src/curve25519/ed25519/additions/xeddsa.c
new file mode 100644
index 0000000000..ee2964a0d5
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/xeddsa.c
@@ -0,0 +1,82 @@
+#include <string.h>
+#include "ge.h"
+#include "crypto_additions.h"
+#include "zeroize.h"
+#include "xeddsa.h" 
+#include "crypto_verify_32.h"
+
+int xed25519_sign(unsigned char* signature_out,
+                  const unsigned char* curve25519_privkey,
+                  const unsigned char* msg, const unsigned long msg_len,
+                  const unsigned char* random)
+{
+  unsigned char a[32], aneg[32];
+  unsigned char A[32];
+  ge_p3 ed_pubkey_point;
+  unsigned char *sigbuf; /* working buffer */
+  unsigned char sign_bit = 0;
+
+  if ((sigbuf = malloc(msg_len + 128)) == 0) {
+    memset(signature_out, 0, 64);
+    return -1;
+  }
+
+  /* Convert the Curve25519 privkey to an Ed25519 public key */
+  ge_scalarmult_base(&ed_pubkey_point, curve25519_privkey);
+  ge_p3_tobytes(A, &ed_pubkey_point);
+
+  /* Force Edwards sign bit to zero */
+  sign_bit = (A[31] & 0x80) >> 7;
+  memcpy(a, curve25519_privkey, 32);
+  sc_neg(aneg, a);
+  sc_cmov(a, aneg, sign_bit); 
+  A[31] &= 0x7F;
+
+  /* Perform an Ed25519 signature with explicit private key */
+  crypto_sign_modified(sigbuf, msg, msg_len, a, A, random);
+  memmove(signature_out, sigbuf, 64);
+
+  zeroize(a, 32);
+  zeroize(aneg, 32);
+  free(sigbuf);
+  return 0;
+}
+
+int xed25519_verify(const unsigned char* signature,
+                    const unsigned char* curve25519_pubkey,
+                    const unsigned char* msg, const unsigned long msg_len)
+{
+  fe u;
+  fe y;
+  unsigned char ed_pubkey[32];
+  unsigned char strict[32];
+  unsigned char verifybuf[MAX_MSG_LEN + 64]; /* working buffer */
+  unsigned char verifybuf2[MAX_MSG_LEN + 64]; /* working buffer #2 */
+
+  if (msg_len > MAX_MSG_LEN) {
+    return -1;
+  }
+
+  /* Convert the Curve25519 public key into an Ed25519 public key.
+
+     y = (u - 1) / (u + 1)
+
+     NOTE: u=-1 is converted to y=0 since fe_invert is mod-exp
+  */
+  fe_frombytes(u, curve25519_pubkey);
+  fe_tobytes(strict, u);
+  if (crypto_verify_32(strict, curve25519_pubkey) != 0)
+    return 0;
+  fe_montx_to_edy(y, u);
+  fe_tobytes(ed_pubkey, y);
+
+  memmove(verifybuf, signature, 64);
+  memmove(verifybuf+64, msg, msg_len);
+
+  /* Then perform a normal Ed25519 verification, return 0 on success */
+  /* The below call has a strange API: */
+  /* verifybuf = R || S || message */
+  /* verifybuf2 = internal to next call gets a copy of verifybuf, S gets 
+     replaced with pubkey for hashing */
+  return crypto_sign_open_modified(verifybuf2, verifybuf, 64 + msg_len, ed_pubkey);
+}
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/xeddsa.h b/libs/libaxolotl/src/curve25519/ed25519/additions/xeddsa.h
new file mode 100644
index 0000000000..b86d7f0d9d
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/xeddsa.h
@@ -0,0 +1,16 @@
+
+#ifndef __XEDDSA_H__
+#define __XEDDSA_H__
+
+/* returns 0 on success */
+int xed25519_sign(unsigned char* signature_out, /* 64 bytes */
+                  const unsigned char* curve25519_privkey, /* 32 bytes */
+                  const unsigned char* msg, const unsigned long msg_len, /* <= 256 bytes */
+                  const unsigned char* random); /* 64 bytes */
+
+/* returns 0 on success */
+int xed25519_verify(const unsigned char* signature, /* 64 bytes */
+                    const unsigned char* curve25519_pubkey, /* 32 bytes */
+                    const unsigned char* msg, const unsigned long msg_len); /* <= 256 bytes */
+
+#endif
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/zeroize.c b/libs/libaxolotl/src/curve25519/ed25519/additions/zeroize.c
index 37c1f708bc..187e725eb5 100644
--- a/libs/libaxolotl/src/curve25519/ed25519/additions/zeroize.c
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/zeroize.c
@@ -3,7 +3,6 @@
 void zeroize(unsigned char* b, size_t len)
 {
   size_t count = 0;
-  unsigned long retval = 0;
   volatile unsigned char *p = b;
 
   for (count = 0; count < len; count++)
@@ -13,5 +12,5 @@ void zeroize(unsigned char* b, size_t len)
 void zeroize_stack()
 {
   unsigned char m[ZEROIZE_STACK_SIZE];
-  zeroize(m, sizeof m);
+  zeroize(m, ZEROIZE_STACK_SIZE);
 }
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/zeroize.h b/libs/libaxolotl/src/curve25519/ed25519/additions/zeroize.h
index 80fcffb768..0db68bb4c6 100644
--- a/libs/libaxolotl/src/curve25519/ed25519/additions/zeroize.h
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/zeroize.h
@@ -3,7 +3,7 @@
 
 #include <stdlib.h>
 
-#define ZEROIZE_STACK_SIZE 2048
+#define ZEROIZE_STACK_SIZE 1024
 
 void zeroize(unsigned char* b, size_t len);
 
diff --git a/libs/libaxolotl/src/curve25519/ed25519/fe_isnonzero.c b/libs/libaxolotl/src/curve25519/ed25519/fe_isnonzero.c
index 47568001ce..0e087a783d 100644
--- a/libs/libaxolotl/src/curve25519/ed25519/fe_isnonzero.c
+++ b/libs/libaxolotl/src/curve25519/ed25519/fe_isnonzero.c
@@ -2,13 +2,22 @@
 #include "crypto_verify_32.h"
 
 /*
-return 1 if f == 0
+return nonzero if f == 0
 return 0 if f != 0
 
 Preconditions:
    |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
 */
 
+/* TREVOR'S COMMENT 
+ *
+ * I think the above comment is wrong.  Instead:
+ *
+ * return 0 if f == 0
+ * return -1 if f != 0 
+ *
+ * */
+
 static const unsigned char zero[32];
 
 int fe_isnonzero(const fe f)
diff --git a/libs/libaxolotl/src/curve25519/ed25519/main/main.c b/libs/libaxolotl/src/curve25519/ed25519/main/main.c
index 5fbe39956d..a6ff569b9e 100644
--- a/libs/libaxolotl/src/curve25519/ed25519/main/main.c
+++ b/libs/libaxolotl/src/curve25519/ed25519/main/main.c
@@ -1,106 +1,13 @@
-#include <stdio.h>
-#include <string.h>
-#include "crypto_hash_sha512.h"
-#include "curve_sigs.h"
+#include "tests.h"
 
-#define MSG_LEN 200
 
 int main(int argc, char* argv[])
 {
-  unsigned char privkey[32];
-  unsigned char pubkey[32];
-  unsigned char signature[64];
-  unsigned char msg[MSG_LEN];
-  unsigned char random[64];
+  all_fast_tests(0);
+  curvesigs_slow_test(0,           10000);
+  xeddsa_slow_test(0,              10000);
+  xeddsa_to_curvesigs_slow_test(0, 10000);
+  vxeddsa_slow_test(0,             10000000);
 
-  /* Initialize pubkey, privkey, msg */
-  memset(msg, 0, MSG_LEN);
-  memset(privkey, 0, 32);
-  memset(pubkey, 0, 32);
-  privkey[0] &= 248;
-  privkey[31] &= 63;
-  privkey[31] |= 64;
-
-  privkey[8] = 189; /* just so there's some bits set */
-
-
-  /* SHA512 test */
-  unsigned char sha512_input[112] = "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu";
-  unsigned char sha512_correct_output[64] =
-{
-0x8E, 0x95, 0x9B, 0x75, 0xDA, 0xE3, 0x13, 0xDA,
-0x8C, 0xF4, 0xF7, 0x28, 0x14, 0xFC, 0x14, 0x3F,
-0x8F, 0x77, 0x79, 0xC6, 0xEB, 0x9F, 0x7F, 0xA1,
-0x72, 0x99, 0xAE, 0xAD, 0xB6, 0x88, 0x90, 0x18,
-0x50, 0x1D, 0x28, 0x9E, 0x49, 0x00, 0xF7, 0xE4,
-0x33, 0x1B, 0x99, 0xDE, 0xC4, 0xB5, 0x43, 0x3A,
-0xC7, 0xD3, 0x29, 0xEE, 0xB6, 0xDD, 0x26, 0x54,
-0x5E, 0x96, 0xE5, 0x5B, 0x87, 0x4B, 0xE9, 0x09
-};
-  unsigned char sha512_actual_output[64];
-
-  crypto_hash_sha512(sha512_actual_output, sha512_input, sizeof(sha512_input));
-  if (memcmp(sha512_actual_output, sha512_correct_output, 64) != 0)
-    printf("SHA512 bad #1\n");
-  else
-    printf("SHA512 good #1\n");
-
-  sha512_input[111] ^= 1;
-
-  crypto_hash_sha512(sha512_actual_output, sha512_input, sizeof(sha512_input));
-  if (memcmp(sha512_actual_output, sha512_correct_output, 64) != 0)
-    printf("SHA512 good #2\n");
-  else
-    printf("SHA512 bad #2\n");
-  
-  /* Signature test */
-  curve25519_keygen(pubkey, privkey);
-
-  curve25519_sign(signature, privkey, msg, MSG_LEN, random);
-
-  if (curve25519_verify(signature, pubkey, msg, MSG_LEN) == 0)
-    printf("Signature good #1\n");
-  else
-    printf("Signature bad #1\n");
-
-  signature[0] ^= 1;
-
-  if (curve25519_verify(signature, pubkey, msg, MSG_LEN) == 0)
-    printf("Signature bad #2\n");
-  else
-    printf("Signature good #2\n");
-
-
-  printf("Random testing...\n");
-  for (int count = 0; count < 10000; count++) {
-    unsigned char b[64];
-    crypto_hash_sha512(b, privkey, 32);
-    memmove(privkey, b, 32);
-    crypto_hash_sha512(b, privkey, 32);
-    memmove(random, b, 64);
-
-    privkey[0] &= 248;
-    privkey[31] &= 63;
-    privkey[31] |= 64;
-
-    curve25519_keygen(pubkey, privkey);
-
-    curve25519_sign(signature, privkey, msg, MSG_LEN, random);
-
-    if (curve25519_verify(signature, pubkey, msg, MSG_LEN) != 0) {
-      printf("failure #1 %d\n", count);
-      return -1;
-    }
-
-    if (b[63] & 1)
-      signature[count % 64] ^= 1;
-    else
-      msg[count % MSG_LEN] ^= 1;
-    if (curve25519_verify(signature, pubkey, msg, MSG_LEN) == 0) {
-      printf("failure #2 %d\n", count);
-      return -1;
-    }
-  }
-  printf("OK\n");
-  return 1;
+  return 0;
 }
diff --git a/libs/libaxolotl/src/curve25519/ed25519/tests/tests.c b/libs/libaxolotl/src/curve25519/ed25519/tests/tests.c
new file mode 100644
index 0000000000..79adae5d16
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/tests/tests.c
@@ -0,0 +1,658 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "crypto_hash_sha512.h"
+#include "keygen.h"
+#include "curve_sigs.h"
+#include "xeddsa.h"
+#include "vxeddsa.h"
+#include "crypto_additions.h"
+#include "ge.h"
+#include "utility.h"
+#include "tests.h"
+#include <assert.h>
+
+
+#define ERROR(...) do {if (!silent) { printf(__VA_ARGS__); abort(); } else return -1; } while (0)
+#define INFO(...) do {if (!silent) printf(__VA_ARGS__);} while (0)
+
+#define TEST(msg, cond) \
+  do {  \
+    if ((cond)) { \
+      INFO("%s good\n", msg); \
+    } \
+    else { \
+      ERROR("%s BAD!!!\n", msg); \
+    } \
+  } while (0)
+
+
+int sha512_fast_test(int silent)
+{
+  unsigned char sha512_input[112] =   
+    "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu";
+  unsigned char sha512_correct_output[64] =
+    {
+    0x8E, 0x95, 0x9B, 0x75, 0xDA, 0xE3, 0x13, 0xDA,
+    0x8C, 0xF4, 0xF7, 0x28, 0x14, 0xFC, 0x14, 0x3F,
+    0x8F, 0x77, 0x79, 0xC6, 0xEB, 0x9F, 0x7F, 0xA1,
+    0x72, 0x99, 0xAE, 0xAD, 0xB6, 0x88, 0x90, 0x18,
+    0x50, 0x1D, 0x28, 0x9E, 0x49, 0x00, 0xF7, 0xE4,
+    0x33, 0x1B, 0x99, 0xDE, 0xC4, 0xB5, 0x43, 0x3A,
+    0xC7, 0xD3, 0x29, 0xEE, 0xB6, 0xDD, 0x26, 0x54,
+    0x5E, 0x96, 0xE5, 0x5B, 0x87, 0x4B, 0xE9, 0x09
+    };
+  unsigned char sha512_actual_output[64];
+
+  crypto_hash_sha512(sha512_actual_output, sha512_input, sizeof(sha512_input));
+  TEST("SHA512 #1", memcmp(sha512_actual_output, sha512_correct_output, 64) == 0);
+
+  sha512_input[111] ^= 1;
+
+  crypto_hash_sha512(sha512_actual_output, sha512_input, sizeof(sha512_input));
+  TEST("SHA512 #2", memcmp(sha512_actual_output, sha512_correct_output, 64) != 0);
+
+  return 0;
+}
+
+int elligator_fast_test(int silent)
+{
+  unsigned char elligator_correct_output[32] = 
+  {
+  0x5f, 0x35, 0x20, 0x00, 0x1c, 0x6c, 0x99, 0x36, 
+  0xa3, 0x12, 0x06, 0xaf, 0xe7, 0xc7, 0xac, 0x22, 
+  0x4e, 0x88, 0x61, 0x61, 0x9b, 0xf9, 0x88, 0x72, 
+  0x44, 0x49, 0x15, 0x89, 0x9d, 0x95, 0xf4, 0x6e
+  };
+
+  unsigned char hashtopoint_correct_output1[32] = 
+  {
+  0xce, 0x89, 0x9f, 0xb2, 0x8f, 0xf7, 0x20, 0x91,
+  0x5e, 0x14, 0xf5, 0xb7, 0x99, 0x08, 0xab, 0x17,
+  0xaa, 0x2e, 0xe2, 0x45, 0xb4, 0xfc, 0x2b, 0xf6,
+  0x06, 0x36, 0x29, 0x40, 0xed, 0x7d, 0xe7, 0xed
+  };
+
+  unsigned char hashtopoint_correct_output2[32] = 
+  {
+  0xa0, 0x35, 0xbb, 0xa9, 0x4d, 0x30, 0x55, 0x33, 
+  0x0d, 0xce, 0xc2, 0x7f, 0x83, 0xde, 0x79, 0xd0, 
+  0x89, 0x67, 0x72, 0x4c, 0x07, 0x8d, 0x68, 0x9d, 
+  0x61, 0x52, 0x1d, 0xf9, 0x2c, 0x5c, 0xba, 0x77
+  };
+
+  unsigned char calculatev_correct_output[32] = 
+  {
+  0x1b, 0x77, 0xb5, 0xa0, 0x44, 0x84, 0x7e, 0xb9, 
+  0x23, 0xd7, 0x93, 0x18, 0xce, 0xc2, 0xc5, 0xe2, 
+  0x84, 0xd5, 0x79, 0x6f, 0x65, 0x63, 0x1b, 0x60, 
+  0x9b, 0xf1, 0xf8, 0xce, 0x88, 0x0b, 0x50, 0x9c,
+  };
+
+  int count;
+  fe in, out;
+  unsigned char bytes[32];
+  fe_0(in);
+  fe_0(out);
+  for (count = 0; count < 32; count++) {
+    bytes[count] = count;
+  }
+  fe_frombytes(in, bytes);
+  elligator(out, in);
+  fe_tobytes(bytes, out);
+  TEST("Elligator vector", memcmp(bytes, elligator_correct_output, 32) == 0);
+
+  /* Elligator(0) == 0 test */
+  fe_0(in);
+  elligator(out, in);
+  TEST("Elligator(0) == 0", memcmp(in, out, 32) == 0);
+
+  /* ge_montx_to_p3(0) -> order2 point test */
+  fe one, negone, zero;
+  fe_1(one);
+  fe_0(zero);
+  fe_sub(negone, zero, one);
+  ge_p3 p3;
+  ge_montx_to_p3(&p3, zero, 0);
+  TEST("ge_montx_to_p3(0) == order 2 point", 
+      fe_isequal(p3.X, zero) &&
+      fe_isequal(p3.Y, negone) &&
+      fe_isequal(p3.Z, one) && 
+      fe_isequal(p3.T, zero));
+
+  /* Hash to point vector test */
+  unsigned char htp[32];
+  
+  for (count=0; count < 32; count++) {
+    htp[count] = count;
+  }
+
+  hash_to_point(&p3, htp, 32);
+  ge_p3_tobytes(htp, &p3);
+  TEST("hash_to_point #1", memcmp(htp, hashtopoint_correct_output1, 32) == 0);
+
+  for (count=0; count < 32; count++) {
+    htp[count] = count+1;
+  }
+
+  hash_to_point(&p3, htp, 32);
+  ge_p3_tobytes(htp, &p3);
+  TEST("hash_to_point #2", memcmp(htp, hashtopoint_correct_output2, 32) == 0);
+
+  /* calculate_U vector test */
+  ge_p3 Bv;
+  unsigned char V[32];
+  unsigned char Vbuf[200];
+  unsigned char a[32];
+  unsigned char A[32];
+  unsigned char Vmsg[3];
+  Vmsg[0] = 0;
+  Vmsg[1] = 1;
+  Vmsg[2] = 2;
+  for (count=0; count < 32; count++) {
+    a[count] = 8 + count;
+    A[count] = 9 + count;
+  }
+  sc_clamp(a);
+  calculate_Bv_and_V(&Bv, V, Vbuf, a, A, Vmsg, 3);
+  TEST("calculate_Bv_and_V vector", memcmp(V, calculatev_correct_output, 32) == 0);
+  return 0;
+}
+
+int curvesigs_fast_test(int silent)
+{
+  unsigned char signature_correct[64] = {
+    0xcf, 0x87, 0x3d, 0x03, 0x79, 0xac, 0x20, 0xe8, 
+    0x89, 0x3e, 0x55, 0x67, 0xee, 0x0f, 0x89, 0x51, 
+    0xf8, 0xdb, 0x84, 0x0d, 0x26, 0xb2, 0x43, 0xb4, 
+    0x63, 0x52, 0x66, 0x89, 0xd0, 0x1c, 0xa7, 0x18, 
+    0xac, 0x18, 0x9f, 0xb1, 0x67, 0x85, 0x74, 0xeb, 
+    0xdd, 0xe5, 0x69, 0x33, 0x06, 0x59, 0x44, 0x8b, 
+    0x0b, 0xd6, 0xc1, 0x97, 0x3f, 0x7d, 0x78, 0x0a, 
+    0xb3, 0x95, 0x18, 0x62, 0x68, 0x03, 0xd7, 0x82,
+  };
+  const int MSG_LEN  = 200;
+  unsigned char privkey[32];
+  unsigned char pubkey[32];
+  unsigned char signature[64];
+  unsigned char msg[MSG_LEN];
+  unsigned char random[64];
+
+  memset(privkey, 0, 32);
+  memset(pubkey, 0, 32);
+  memset(signature, 0, 64);
+  memset(msg, 0, MSG_LEN);
+  memset(random, 0, 64);
+
+  privkey[8] = 189; /* just so there's some bits set */
+  sc_clamp(privkey);
+  
+  /* Signature vector test */
+  curve25519_keygen(pubkey, privkey);
+
+  curve25519_sign(signature, privkey, msg, MSG_LEN, random);
+
+  TEST("Curvesig sign", memcmp(signature, signature_correct, 64) == 0);
+  TEST("Curvesig verify #1", curve25519_verify(signature, pubkey, msg, MSG_LEN) == 0);
+  signature[0] ^= 1;
+  TEST("Curvesig verify #2", curve25519_verify(signature, pubkey, msg, MSG_LEN) != 0);
+  return 0;
+}
+
+int xeddsa_fast_test(int silent)
+{
+  unsigned char signature_correct[64] = {
+  0x11, 0xc7, 0xf3, 0xe6, 0xc4, 0xdf, 0x9e, 0x8a, 
+  0x51, 0x50, 0xe1, 0xdb, 0x3b, 0x30, 0xf9, 0x2d, 
+  0xe3, 0xa3, 0xb3, 0xaa, 0x43, 0x86, 0x56, 0x54, 
+  0x5f, 0xa7, 0x39, 0x0f, 0x4b, 0xcc, 0x7b, 0xb2, 
+  0x6c, 0x43, 0x1d, 0x9e, 0x90, 0x64, 0x3e, 0x4f, 
+  0x0e, 0xaa, 0x0e, 0x9c, 0x55, 0x77, 0x66, 0xfa, 
+  0x69, 0xad, 0xa5, 0x76, 0xd6, 0x3d, 0xca, 0xf2, 
+  0xac, 0x32, 0x6c, 0x11, 0xd0, 0xb9, 0x77, 0x02,
+  };
+  const int MSG_LEN  = 200;
+  unsigned char privkey[32];
+  unsigned char pubkey[32];
+  unsigned char signature[64];
+  unsigned char msg[MSG_LEN];
+  unsigned char random[64];
+
+  memset(privkey, 0, 32);
+  memset(pubkey, 0, 32);
+  memset(signature, 0, 64);
+  memset(msg, 0, MSG_LEN);
+  memset(random, 0, 64);
+
+  privkey[8] = 189; /* just so there's some bits set */
+  sc_clamp(privkey);
+  
+  /* Signature vector test */
+  curve25519_keygen(pubkey, privkey);
+
+  xed25519_sign(signature, privkey, msg, MSG_LEN, random);
+  TEST("XEdDSA sign", memcmp(signature, signature_correct, 64) == 0);
+  TEST("XEdDSA verify #1", xed25519_verify(signature, pubkey, msg, MSG_LEN) == 0);
+  signature[0] ^= 1;
+  TEST("XEdDSA verify #2", xed25519_verify(signature, pubkey, msg, MSG_LEN) != 0);
+  return 0;
+}
+
+int vxeddsa_fast_test(int silent)
+{
+  unsigned char signature_correct[96] = {
+  0x23, 0xc6, 0xe5, 0x93, 0x3f, 0xcd, 0x56, 0x47, 
+  0x7a, 0x86, 0xc9, 0x9b, 0x76, 0x2c, 0xb5, 0x24, 
+  0xc3, 0xd6, 0x05, 0x55, 0x38, 0x83, 0x4d, 0x4f, 
+  0x8d, 0xb8, 0xf0, 0x31, 0x07, 0xec, 0xeb, 0xa0, 
+  0xa0, 0x01, 0x50, 0xb8, 0x4c, 0xbb, 0x8c, 0xcd, 
+  0x23, 0xdc, 0x65, 0xfd, 0x0e, 0x81, 0xb2, 0x86, 
+  0x06, 0xa5, 0x6b, 0x0c, 0x4f, 0x53, 0x6d, 0xc8, 
+  0x8b, 0x8d, 0xc9, 0x04, 0x6e, 0x4a, 0xeb, 0x08, 
+  0xce, 0x08, 0x71, 0xfc, 0xc7, 0x00, 0x09, 0xa4, 
+  0xd6, 0xc0, 0xfd, 0x2d, 0x1a, 0xe5, 0xb6, 0xc0, 
+  0x7c, 0xc7, 0x22, 0x3b, 0x69, 0x59, 0xa8, 0x26, 
+  0x2b, 0x57, 0x78, 0xd5, 0x46, 0x0e, 0x0f, 0x05, 
+  };
+  const int MSG_LEN  = 200;
+  unsigned char privkey[32];
+  unsigned char pubkey[32];
+  unsigned char signature[96];
+  unsigned char msg[MSG_LEN];
+  unsigned char random[64];
+  unsigned char vrf_out[32];
+  unsigned char vrf_outprev[32];
+
+  memset(privkey, 0, 32);
+  memset(pubkey, 0, 32);
+  memset(signature, 0, 96);
+  memset(msg, 0, MSG_LEN);
+  memset(random, 0, 64);
+
+  privkey[8] = 189; /* just so there's some bits set */
+  sc_clamp(privkey);
+  
+  /* Signature vector test */
+  curve25519_keygen(pubkey, privkey);
+
+  vxed25519_sign(signature, privkey, msg, MSG_LEN, random);
+
+  TEST("VXEdDSA sign", memcmp(signature, signature_correct, 96) == 0);
+  TEST("VXEdDSA verify #1", vxed25519_verify(vrf_out, signature, pubkey, msg, MSG_LEN) == 0);
+  memcpy(vrf_outprev, vrf_out, 32);
+  signature[0] ^= 1;
+  TEST("VXEdDSA verify #2", vxed25519_verify(vrf_out, signature, pubkey, msg, MSG_LEN) != 0);
+
+  /* Test U */
+  unsigned char sigprev[96];
+  memcpy(sigprev, signature, 96);
+  sigprev[0] ^= 1; /* undo prev disturbance */
+
+  random[0] ^= 1; 
+  vxed25519_sign(signature, privkey, msg, MSG_LEN, random);
+  TEST("VXEdDSA verify #3", vxed25519_verify(vrf_out, signature, pubkey, msg, MSG_LEN) == 0);
+ 
+  TEST("VXEdDSA VRF value unchanged", memcmp(vrf_out, vrf_outprev, 32) == 0);
+  TEST("VXEdDSA (h, s) changed", memcmp(signature+32, sigprev+32, 64) != 0);
+  return 0;
+}
+
+int curvesigs_slow_test(int silent, int iterations)
+{
+
+  unsigned char signature_10k_correct[64] = {
+  0xfc, 0xba, 0x55, 0xc4, 0x85, 0x4a, 0x42, 0x25, 
+  0x19, 0xab, 0x08, 0x8d, 0xfe, 0xb5, 0x13, 0xb6, 
+  0x0d, 0x24, 0xbb, 0x16, 0x27, 0x55, 0x71, 0x48, 
+  0xdd, 0x20, 0xb1, 0xcd, 0x2a, 0xd6, 0x7e, 0x35, 
+  0xef, 0x33, 0x4c, 0x7b, 0x6d, 0x94, 0x6f, 0x52, 
+  0xec, 0x43, 0xd7, 0xe6, 0x35, 0x24, 0xcd, 0x5b, 
+  0x5d, 0xdc, 0xb2, 0x32, 0xc6, 0x22, 0x53, 0xf3, 
+  0x38, 0x02, 0xf8, 0x28, 0x28, 0xc5, 0x65, 0x05,
+  };
+
+  int count;  
+  const int MSG_LEN  = 200;
+  unsigned char privkey[32];
+  unsigned char pubkey[32];
+  unsigned char signature[64];
+  unsigned char msg[MSG_LEN];
+  unsigned char random[64];
+
+  memset(privkey, 0, 32);
+  memset(pubkey, 0, 32);
+  memset(signature, 0, 64);
+  memset(msg, 0, MSG_LEN);
+  memset(random, 0, 64);
+
+  /* Signature random test */
+  INFO("Pseudorandom curvesigs...\n");
+  for (count = 1; count <= iterations; count++) {
+    unsigned char b[64];
+    crypto_hash_sha512(b, signature, 64);
+    memmove(privkey, b, 32);
+    crypto_hash_sha512(b, privkey, 32);
+    memmove(random, b, 64);
+
+    sc_clamp(privkey);
+    curve25519_keygen(pubkey, privkey);
+
+    curve25519_sign(signature, privkey, msg, MSG_LEN, random);
+
+    if (curve25519_verify(signature, pubkey, msg, MSG_LEN) != 0)
+      ERROR("Curvesig verify failure #1 %d\n", count);
+
+    if (b[63] & 1)
+      signature[count % 64] ^= 1;
+    else
+      msg[count % MSG_LEN] ^= 1;
+    if (curve25519_verify(signature, pubkey, msg, MSG_LEN) == 0)
+      ERROR("Curvesig verify failure #2 %d\n", count);
+      
+    if (count == 10000) {
+      if (memcmp(signature, signature_10k_correct, 64) != 0)
+        ERROR("Curvesig signature 10K doesn't match %d\n", count);
+    }
+    if (count == 100000)
+      print_bytes("100K curvesigs", signature, 64);
+    if (count == 1000000)
+      print_bytes("1M curvesigs", signature, 64);
+    if (count == 10000000)
+      print_bytes("10M curvesigs", signature, 64);
+  }
+  INFO("good\n");
+  return 0;
+}
+
+int xeddsa_slow_test(int silent, int iterations)
+{
+
+  unsigned char signature_10k_correct[64] = {
+  0x15, 0x29, 0x03, 0x38, 0x66, 0x16, 0xcd, 0x26, 
+  0xbb, 0x3e, 0xec, 0xe2, 0x9f, 0x72, 0xa2, 0x5c, 
+  0x7d, 0x05, 0xc9, 0xcb, 0x84, 0x3f, 0x92, 0x96, 
+  0xb3, 0xfb, 0xb9, 0xdd, 0xd6, 0xed, 0x99, 0x04, 
+  0xc1, 0xa8, 0x02, 0x16, 0xcf, 0x49, 0x3f, 0xf1, 
+  0xbe, 0x69, 0xf9, 0xf1, 0xcc, 0x16, 0xd7, 0xdc, 
+  0x6e, 0xd3, 0x78, 0xaa, 0x04, 0xeb, 0x71, 0x51, 
+  0x9d, 0xe8, 0x7a, 0x5b, 0xd8, 0x49, 0x7b, 0x05, 
+  };
+
+  int count;  
+  const int MSG_LEN  = 200;
+  unsigned char privkey[32];
+  unsigned char pubkey[32];
+  unsigned char signature[96];
+  unsigned char msg[MSG_LEN];
+  unsigned char random[64];
+
+  memset(privkey, 0, 32);
+  memset(pubkey, 0, 32);
+  memset(signature, 1, 64);
+  memset(msg, 0, MSG_LEN);
+  memset(random, 0, 64);
+
+  /* Signature random test */
+  INFO("Pseudorandom XEdDSA...\n");
+  for (count = 1; count <= iterations; count++) {
+    unsigned char b[64];
+    crypto_hash_sha512(b, signature, 64);
+    memmove(privkey, b, 32);
+    crypto_hash_sha512(b, privkey, 32);
+    memmove(random, b, 64);
+
+    sc_clamp(privkey);
+    curve25519_keygen(pubkey, privkey);
+
+    xed25519_sign(signature, privkey, msg, MSG_LEN, random);
+
+    if (xed25519_verify(signature, pubkey, msg, MSG_LEN) != 0)
+      ERROR("XEdDSA verify failure #1 %d\n", count);
+
+    if (b[63] & 1)
+      signature[count % 64] ^= 1;
+    else
+      msg[count % MSG_LEN] ^= 1;
+    if (xed25519_verify(signature, pubkey, msg, MSG_LEN) == 0)
+      ERROR("XEdDSA verify failure #2 %d\n", count);
+
+    if (count == 10000) {
+      if (memcmp(signature, signature_10k_correct, 64) != 0)
+        ERROR("XEDSA signature 10K doesn't match %d\n", count);
+    }
+    if (count == 100000)
+      print_bytes("100K XEdDSA", signature, 64);
+    if (count == 1000000)
+      print_bytes("1M XEdDSA", signature, 64);
+    if (count == 10000000)
+      print_bytes("10M XEdDSA", signature, 64);
+  }
+  INFO("good\n");
+  return 0;
+}
+
+int xeddsa_to_curvesigs_slow_test(int silent, int iterations)
+{
+
+  unsigned char signature_10k_correct[64] = {
+  0x33, 0x50, 0xa8, 0x68, 0xcd, 0x9e, 0x74, 0x99, 
+  0xa3, 0x5c, 0x33, 0x75, 0x2b, 0x22, 0x03, 0xf8, 
+  0xb5, 0x0f, 0xea, 0x8c, 0x33, 0x1c, 0x68, 0x8b, 
+  0xbb, 0xf3, 0x31, 0xcf, 0x7c, 0x42, 0x37, 0x35,  
+  0xa0, 0x0e, 0x15, 0xb8, 0x5d, 0x2b, 0xe1, 0xa2, 
+  0x03, 0x77, 0x94, 0x3d, 0x13, 0x5c, 0xd4, 0x9b, 
+  0x6a, 0x31, 0xf4, 0xdc, 0xfe, 0x24, 0xad, 0x54, 
+  0xeb, 0xd2, 0x98, 0x47, 0xf1, 0xcc, 0xbf, 0x0d
+  
+  };
+
+  int count;  
+  const int MSG_LEN  = 200;
+  unsigned char privkey[32];
+  unsigned char pubkey[32];
+  unsigned char signature[96];
+  unsigned char msg[MSG_LEN];
+  unsigned char random[64];
+
+  memset(privkey, 0, 32);
+  memset(pubkey, 0, 32);
+  memset(signature, 2, 64);
+  memset(msg, 0, MSG_LEN);
+  memset(random, 0, 64);
+
+  /* Signature random test */
+  INFO("Pseudorandom XEdDSA/Curvesigs...\n");
+  for (count = 1; count <= iterations; count++) {
+    unsigned char b[64];
+    crypto_hash_sha512(b, signature, 64);
+    memmove(privkey, b, 32);
+    crypto_hash_sha512(b, privkey, 32);
+    memmove(random, b, 64);
+
+    sc_clamp(privkey);
+    curve25519_keygen(pubkey, privkey);
+
+    xed25519_sign(signature, privkey, msg, MSG_LEN, random);
+
+    if (curve25519_verify(signature, pubkey, msg, MSG_LEN) != 0)
+      ERROR("XEdDSA/Curvesigs verify failure #1 %d\n", count);
+
+    if (b[63] & 1)
+      signature[count % 64] ^= 1;
+    else
+      msg[count % MSG_LEN] ^= 1;
+    if (curve25519_verify(signature, pubkey, msg, MSG_LEN) == 0)
+      ERROR("XEdDSA/Curvesigs verify failure #2 %d\n", count);
+
+    if (count == 10000) {
+      if (memcmp(signature, signature_10k_correct, 64) != 0)
+        ERROR("XEdDSA/Curvesigs signature 10K doesn't match %d\n", count);
+    }
+    if (count == 100000)
+      print_bytes("100K XEdDSA/C", signature, 64);
+    if (count == 1000000)
+      print_bytes("1M XEdDSA/C", signature, 64);
+    if (count == 10000000)
+      print_bytes("10M XEdDSA/C", signature, 64);
+  }
+  INFO("good\n");
+  return 0;
+}
+
+int vxeddsa_slow_test(int silent, int iterations)
+{
+
+  unsigned char signature_10k_correct[96] = {
+  0xa1, 0x96, 0x96, 0xe5, 0x87, 0x3f, 0x6e, 0x5c, 
+  0x2e, 0xd3, 0x73, 0xab, 0x04, 0x0c, 0x1f, 0x26, 
+  0x3c, 0xca, 0x52, 0xc4, 0x7e, 0x49, 0xaa, 0xce, 
+  0xb5, 0xd6, 0xa2, 0x29, 0x46, 0x3f, 0x1b, 0x54, 
+  0x45, 0x94, 0x9b, 0x6c, 0x27, 0xf9, 0x2a, 0xed, 
+  0x17, 0xa4, 0x72, 0xbf, 0x35, 0x37, 0xc1, 0x90, 
+  0xac, 0xb3, 0xfd, 0x2d, 0xf1, 0x01, 0x05, 0xbe, 
+  0x56, 0x5c, 0xaf, 0x63, 0x65, 0xad, 0x38, 0x04, 
+  0x70, 0x53, 0xdf, 0x2b, 0xc1, 0x45, 0xc8, 0xee, 
+  0x02, 0x0d, 0x2b, 0x22, 0x23, 0x7a, 0xbf, 0xfa, 
+  0x43, 0x31, 0xb3, 0xac, 0x26, 0xd9, 0x76, 0xfc, 
+  0xfe, 0x30, 0xa1, 0x7c, 0xce, 0x10, 0x67, 0x0e, 
+  };
+
+  unsigned char signature_100k_correct[96] = {
+  0xc9, 0x11, 0x2b, 0x55, 0xfa, 0xc4, 0xb2, 0xfe, 
+  0x00, 0x7d, 0xf6, 0x45, 0xcb, 0xd2, 0x73, 0xc9, 
+  0x43, 0xba, 0x20, 0xf6, 0x9c, 0x18, 0x84, 0xef, 
+  0x6c, 0x65, 0x7a, 0xdb, 0x49, 0xfc, 0x1e, 0xbe, 
+  0x31, 0xb3, 0xe6, 0xa4, 0x68, 0x2f, 0xd0, 0x30, 
+  0x81, 0xfc, 0x0d, 0xcd, 0x2d, 0x00, 0xab, 0xae, 
+  0x9f, 0x08, 0xf0, 0x99, 0xff, 0x9f, 0xdc, 0x2d, 
+  0x68, 0xd6, 0xe7, 0xe8, 0x44, 0x2a, 0x5b, 0x0e, 
+  0x48, 0x67, 0xe2, 0x41, 0x4a, 0xd9, 0x0c, 0x2a, 
+  0x2b, 0x4e, 0x66, 0x09, 0x87, 0xa0, 0x6b, 0x3b, 
+  0xd1, 0xd9, 0xa3, 0xe3, 0xa5, 0x69, 0xed, 0xc1, 
+  0x42, 0x03, 0x93, 0x0d, 0xbc, 0x7e, 0xe9, 0x08,
+  };
+
+  unsigned char signature_1m_correct[96] = {
+  0xf8, 0xb1, 0x20, 0xf2, 0x1e, 0x5c, 0xbf, 0x5f, 
+  0xea, 0x07, 0xcb, 0xb5, 0x77, 0xb8, 0x03, 0xbc, 
+  0xcb, 0x6d, 0xf1, 0xc1, 0xa5, 0x03, 0x05, 0x7b, 
+  0x01, 0x63, 0x9b, 0xf9, 0xed, 0x3e, 0x57, 0x47, 
+  0xd2, 0x5b, 0xf4, 0x7e, 0x7c, 0x45, 0xce, 0xfc, 
+  0x06, 0xb3, 0xf4, 0x05, 0x81, 0x9f, 0x53, 0xb0, 
+  0x18, 0xe3, 0xfa, 0xcb, 0xb2, 0x52, 0x3e, 0x57, 
+  0xcb, 0x34, 0xcc, 0x81, 0x60, 0xb9, 0x0b, 0x04, 
+  0x07, 0x79, 0xc0, 0x53, 0xad, 0xc4, 0x4b, 0xd0, 
+  0xb5, 0x7d, 0x95, 0x4e, 0xbe, 0xa5, 0x75, 0x0c, 
+  0xd4, 0xbf, 0xa7, 0xc0, 0xcf, 0xba, 0xe7, 0x7c, 
+  0xe2, 0x90, 0xef, 0x61, 0xa9, 0x29, 0x66, 0x0d,
+  };
+
+  unsigned char signature_10m_correct[96] = {
+  0xf5, 0xa4, 0xbc, 0xec, 0xc3, 0x3d, 0xd0, 0x43, 
+  0xd2, 0x81, 0x27, 0x9e, 0xf0, 0x4c, 0xbe, 0xf3, 
+  0x77, 0x01, 0x56, 0x41, 0x0e, 0xff, 0x0c, 0xb9, 
+  0x66, 0xec, 0x4d, 0xe0, 0xb7, 0x25, 0x63, 0x6b, 
+  0x5c, 0x08, 0x39, 0x80, 0x4e, 0x37, 0x1b, 0x2c, 
+  0x46, 0x6f, 0x86, 0x99, 0x1c, 0x4e, 0x31, 0x60, 
+  0xdb, 0x4c, 0xfe, 0xc5, 0xa2, 0x4d, 0x71, 0x2b, 
+  0xd6, 0xd0, 0xc3, 0x98, 0x88, 0xdb, 0x0e, 0x0c, 
+  0x68, 0x4a, 0xd3, 0xc7, 0x56, 0xac, 0x8d, 0x95, 
+  0x7b, 0xbd, 0x99, 0x50, 0xe8, 0xd3, 0xea, 0xf3, 
+  0x7b, 0x26, 0xf2, 0xa2, 0x2b, 0x02, 0x58, 0xca, 
+  0xbd, 0x2c, 0x2b, 0xf7, 0x77, 0x58, 0xfe, 0x09,
+  };
+
+  int count;  
+  const int MSG_LEN  = 200;
+  unsigned char privkey[32];
+  unsigned char pubkey[32];
+  unsigned char signature[96];
+  unsigned char msg[MSG_LEN];
+  unsigned char random[64];
+  unsigned char vrf_out[32];
+
+  memset(privkey, 0, 32);
+  memset(pubkey, 0, 32);
+  memset(signature, 3, 96);
+  memset(msg, 0, MSG_LEN);
+  memset(random, 0, 64);
+
+  INFO("Pseudorandom VXEdDSA...\n");
+  for (count = 1; count <= iterations; count++) {
+    unsigned char b[64];
+    crypto_hash_sha512(b, signature, 96);
+    memmove(privkey, b, 32);
+    crypto_hash_sha512(b, privkey, 32);
+    memmove(random, b, 64);
+
+    sc_clamp(privkey);
+    curve25519_keygen(pubkey, privkey);
+
+    vxed25519_sign(signature, privkey, msg, MSG_LEN, random);
+
+    if (vxed25519_verify(vrf_out, signature, pubkey, msg, MSG_LEN) != 0)
+      ERROR("VXEdDSA verify failure #1 %d\n", count);
+
+    if (b[63] & 1)
+      signature[count % 96] ^= 1;
+    else
+      msg[count % MSG_LEN] ^= 1;
+
+    if (vxed25519_verify(vrf_out, signature, pubkey, msg, MSG_LEN) == 0)
+      ERROR("VXEdDSA verify failure #2 %d\n", count);
+
+    if (count == 10000)
+      print_bytes("10K VXEdDSA", signature, 96);
+    if (count == 100000)
+      print_bytes("100K VXEdDSA", signature, 96);
+    if (count == 1000000)
+      print_bytes("1M VXEdDSA", signature, 96);
+    if (count == 10000000)
+      print_bytes("10M VXEdDSA", signature, 96);
+    if (count == 100000000)
+      print_bytes("100M VXEdDSA", signature, 96);
+
+    if (count == 10000) {
+      if (memcmp(signature, signature_10k_correct, 96) != 0)
+        ERROR("VXEDDSA 10K doesn't match %d\n", count);
+    }
+    if (count == 100000) {
+      if (memcmp(signature, signature_100k_correct, 96) != 0)
+        ERROR("VXEDDSA 100K doesn't match %d\n", count);
+    }
+    if (count == 1000000) {
+      if (memcmp(signature, signature_1m_correct, 96) != 0)
+        ERROR("VXEDDSA 1m doesn't match %d\n", count);
+    }
+    if (count == 10000000) {
+      if (memcmp(signature, signature_10m_correct, 96) != 0)
+        ERROR("VXEDDSA 10m doesn't match %d\n", count);
+    }
+    /*
+    if (count == 100000000) {
+      if (memcmp(signature, signature_100m_correct, 96) != 0)
+        ERROR("VXEDDSA 100m doesn't match %d\n", count);
+    }
+    */
+  }
+  INFO("good\n");
+  return 0;
+}
+
+int all_fast_tests(int silent)
+{
+  int result;
+  if ((result = sha512_fast_test(silent)) != 0)
+    return result;
+  if ((result = elligator_fast_test(silent)) != 0)
+    return result;
+  if ((result = curvesigs_fast_test(silent)) != 0)
+    return result;
+  if ((result = xeddsa_fast_test(silent)) != 0)
+    return result;
+  if ((result = vxeddsa_fast_test(silent)) != 0)
+    return result;
+
+  return 0;
+}
+
diff --git a/libs/libaxolotl/src/curve25519/ed25519/tests/tests.h b/libs/libaxolotl/src/curve25519/ed25519/tests/tests.h
new file mode 100644
index 0000000000..1623268bde
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/tests/tests.h
@@ -0,0 +1,22 @@
+#ifndef __TESTS_H__
+#define __TESTS_H__
+
+/* silent = 0 : prints info+error messages to stdout, abort() on test failure
+ * silent = 1 : returns 0 for success, anything else for failure 
+ * iterations : hardcoded known-good values are at 10000, so run at least this many
+ */
+
+int sha512_fast_test(int silent);
+int elligator_fast_test(int silent);
+int curvesigs_fast_test(int silent);
+int xeddsa_fast_test(int silent);
+int vxeddsa_fast_test(int silent);
+
+int curvesigs_slow_test(int silent, int iterations);
+int xeddsa_slow_test(int silent, int iterations);
+int xeddsa_to_curvesigs_slow_test(int silent, int iterations);
+int vxeddsa_slow_test(int silent, int iterations);
+
+int all_fast_tests(int silent);
+
+#endif
diff --git a/libs/libaxolotl/src/device_consistency.c b/libs/libaxolotl/src/device_consistency.c
new file mode 100644
index 0000000000..f01ed15363
--- /dev/null
+++ b/libs/libaxolotl/src/device_consistency.c
@@ -0,0 +1,646 @@
+#include "device_consistency.h"
+
+#include <assert.h>
+#include <string.h>
+
+#include "signal_protocol_internal.h"
+#include "curve.h"
+#include "WhisperTextProtocol.pb-c.h"
+#include "utarray.h"
+
+#define CODE_VERSION 0
+
+struct device_consistency_signature
+{
+    signal_type_base base;
+    signal_buffer *signature;
+    signal_buffer *vrf_output;
+};
+
+struct device_consistency_commitment
+{
+    signal_type_base base;
+    uint32_t generation;
+    signal_buffer *serialized;
+};
+
+struct device_consistency_message
+{
+    signal_type_base base;
+    device_consistency_signature *signature;
+    uint32_t generation;
+    signal_buffer *serialized;
+};
+
+struct device_consistency_signature_list
+{
+    UT_array *values;
+};
+
+static int device_consistency_message_create(device_consistency_message **message);
+static void device_consistency_signature_list_sort(device_consistency_signature_list *list);
+
+/*------------------------------------------------------------------------*/
+
+int device_consistency_signature_create(device_consistency_signature **signature,
+        const uint8_t *signature_data, size_t signature_len,
+        const uint8_t *vrf_output_data, size_t vrf_output_len)
+{
+    int result = 0;
+    device_consistency_signature *result_signature = 0;
+
+    result_signature = malloc(sizeof(device_consistency_signature));
+    if(!result_signature) {
+        result = SG_ERR_NOMEM;
+        goto complete;
+    }
+    memset(result_signature, 0, sizeof(device_consistency_signature));
+    SIGNAL_INIT(result_signature, device_consistency_signature_destroy);
+
+    result_signature->signature = signal_buffer_create(signature_data, signature_len);
+    if(!result_signature->signature) {
+        result = SG_ERR_NOMEM;
+        goto complete;
+    }
+
+    result_signature->vrf_output = signal_buffer_create(vrf_output_data, vrf_output_len);
+    if(!result_signature->vrf_output) {
+        result = SG_ERR_NOMEM;
+        goto complete;
+    }
+
+complete:
+    if(result >= 0) {
+        *signature = result_signature;
+    }
+    else {
+        SIGNAL_UNREF(result_signature);
+    }
+    return result;
+}
+
+signal_buffer *device_consistency_signature_get_signature(const device_consistency_signature *signature)
+{
+    assert(signature);
+    return signature->signature;
+}
+
+signal_buffer *device_consistency_signature_get_vrf_output(const device_consistency_signature *signature)
+{
+    assert(signature);
+    return signature->vrf_output;
+}
+
+void device_consistency_signature_destroy(signal_type_base *type)
+{
+    device_consistency_signature *signature = (device_consistency_signature *)type;
+    signal_buffer_free(signature->signature);
+    signal_buffer_free(signature->vrf_output);
+    free(signature);
+}
+
+/*------------------------------------------------------------------------*/
+
+int device_consistency_commitment_create(device_consistency_commitment **commitment,
+        uint32_t generation, ec_public_key_list *identity_key_list,
+        signal_context *global_context)
+{
+    static const char version[] = "DeviceConsistencyCommitment_V0";
+    int result = 0;
+    void *digest_context = 0;
+    device_consistency_commitment *result_commitment = 0;
+    ec_public_key_list *sorted_list = 0;
+    uint8_t gen_data[4];
+    unsigned int list_size;
+    unsigned int i;
+
+    result_commitment = malloc(sizeof(device_consistency_commitment));
+    if(!result_commitment) {
+        result = SG_ERR_NOMEM;
+        goto complete;
+    }
+    memset(result_commitment, 0, sizeof(device_consistency_commitment));
+    SIGNAL_INIT(result_commitment, device_consistency_commitment_destroy);
+
+    sorted_list = ec_public_key_list_copy(identity_key_list);
+    if(!sorted_list) {
+        result = SG_ERR_NOMEM;
+        goto complete;
+    }
+
+    ec_public_key_list_sort(sorted_list);
+
+    result = signal_sha512_digest_init(global_context, &digest_context);
+    if(result < 0) {
+        goto complete;
+    }
+
+    result = signal_sha512_digest_update(global_context, digest_context,
+            (uint8_t *)version, sizeof(version) - 1);
+    if(result < 0) {
+        goto complete;
+    }
+
+    gen_data[3] = (uint8_t)(generation);
+    gen_data[2] = (uint8_t)(generation >> 8);
+    gen_data[1] = (uint8_t)(generation >> 16);
+    gen_data[0] = (uint8_t)(generation >> 24);
+
+    result = signal_sha512_digest_update(global_context, digest_context,
+            gen_data, sizeof(gen_data));
+    if(result < 0) {
+        goto complete;
+    }
+
+    list_size = ec_public_key_list_size(sorted_list);
+    for(i = 0; i < list_size; i++) {
+        signal_buffer *key_buffer = 0;
+        ec_public_key *key = ec_public_key_list_at(sorted_list, i);
+
+        result = ec_public_key_serialize(&key_buffer, key);
+        if(result < 0) {
+            goto complete;
+        }
+
+        result = signal_sha512_digest_update(global_context, digest_context,
+                signal_buffer_data(key_buffer), signal_buffer_len(key_buffer));
+        signal_buffer_free(key_buffer);
+        if(result < 0) {
+            goto complete;
+        }
+    }
+
+    result_commitment->generation = generation;
+    result = signal_sha512_digest_final(global_context, digest_context, &result_commitment->serialized);
+
+complete:
+    if(sorted_list) {
+        ec_public_key_list_free(sorted_list);
+    }
+    if(digest_context) {
+        signal_sha512_digest_cleanup(global_context, digest_context);
+    }
+    if(result >= 0) {
+        *commitment = result_commitment;
+    }
+    else {
+        SIGNAL_UNREF(result_commitment);
+    }
+    return result;
+}
+
+uint32_t device_consistency_commitment_get_generation(const device_consistency_commitment *commitment)
+{
+    assert(commitment);
+    return commitment->generation;
+}
+
+signal_buffer *device_consistency_commitment_get_serialized(const device_consistency_commitment *commitment)
+{
+    assert(commitment);
+    return commitment->serialized;
+}
+
+void device_consistency_commitment_destroy(signal_type_base *type)
+{
+    device_consistency_commitment *commitment = (device_consistency_commitment *)type;
+    signal_buffer_free(commitment->serialized);
+    free(commitment);
+}
+
+/*------------------------------------------------------------------------*/
+
+int device_consistency_message_create(device_consistency_message **message)
+{
+    int result = 0;
+    device_consistency_message *result_message = 0;
+
+    result_message = malloc(sizeof(device_consistency_message));
+    if(!result_message) {
+        result = SG_ERR_NOMEM;
+        goto complete;
+    }
+    memset(result_message, 0, sizeof(device_consistency_message));
+    SIGNAL_INIT(result_message, device_consistency_message_destroy);
+
+complete:
+    if(result >= 0) {
+        *message = result_message;
+    }
+    return result;
+}
+
+int device_consistency_message_create_from_pair(device_consistency_message **message,
+        device_consistency_commitment *commitment,
+        ec_key_pair *identity_key_pair,
+        signal_context *global_context)
+{
+    int result = 0;
+    device_consistency_message *result_message = 0;
+    signal_buffer *commitment_buffer = 0;
+    signal_buffer *signature_buffer = 0;
+    signal_buffer *vrf_output_buffer = 0;
+    signal_buffer *serialized_signature_buffer = 0;
+    Textsecure__DeviceConsistencyCodeMessage message_structure = TEXTSECURE__DEVICE_CONSISTENCY_CODE_MESSAGE__INIT;
+    size_t len = 0;
+    uint8_t *data = 0;
+    size_t result_size = 0;
+
+    /* Create message instance */
+    result = device_consistency_message_create(&result_message);
+    if(result < 0) {
+        goto complete;
+    }
+
+    /* Calculate VRF signature */
+    commitment_buffer = device_consistency_commitment_get_serialized(commitment);
+    result = curve_calculate_vrf_signature(global_context, &signature_buffer,
+            ec_key_pair_get_private(identity_key_pair),
+            signal_buffer_data(commitment_buffer), signal_buffer_len(commitment_buffer));
+    if(result < 0) {
+        goto complete;
+    }
+
+    /* Verify VRF signature */
+    result = curve_verify_vrf_signature(global_context, &vrf_output_buffer,
+            ec_key_pair_get_public(identity_key_pair),
+            signal_buffer_data(commitment_buffer), signal_buffer_len(commitment_buffer),
+            signal_buffer_data(signature_buffer), signal_buffer_len(signature_buffer));
+    if(result < 0) {
+        goto complete;
+    }
+
+    result_message->generation = device_consistency_commitment_get_generation(commitment);
+
+    /* Create and assign the signature */
+    result = device_consistency_signature_create(&result_message->signature,
+            signal_buffer_data(signature_buffer), signal_buffer_len(signature_buffer),
+            signal_buffer_data(vrf_output_buffer), signal_buffer_len(vrf_output_buffer));
+    if(result < 0) {
+        goto complete;
+    }
+
+    serialized_signature_buffer = device_consistency_signature_get_signature(result_message->signature);
+
+    /* Serialize the message */
+    message_structure.generation = device_consistency_commitment_get_generation(commitment);
+    message_structure.has_generation = 1;
+    message_structure.signature.data = signal_buffer_data(serialized_signature_buffer);
+    message_structure.signature.len = signal_buffer_len(serialized_signature_buffer);
+    message_structure.has_signature = 1;
+
+    len = textsecure__device_consistency_code_message__get_packed_size(&message_structure);
+    result_message->serialized = signal_buffer_alloc(len);
+    if(!result_message->serialized) {
+        result = SG_ERR_NOMEM;
+        goto complete;
+    }
+
+    data = signal_buffer_data(result_message->serialized);
+
+    result_size = textsecure__device_consistency_code_message__pack(&message_structure, data);
+    if(result_size != len) {
+        result = SG_ERR_INVALID_PROTO_BUF;
+        goto complete;
+    }
+
+complete:
+    signal_buffer_free(signature_buffer);
+    signal_buffer_free(vrf_output_buffer);
+    if(result >= 0) {
+        *message = result_message;
+    }
+    else {
+        SIGNAL_UNREF(result_message);
+    }
+    if(result == SG_ERR_INVALID_KEY || result == SG_ERR_VRF_SIG_VERIF_FAILED) {
+        result = SG_ERR_UNKNOWN;
+    }
+    return result;
+}
+
+int device_consistency_message_create_from_serialized(device_consistency_message **message,
+        device_consistency_commitment *commitment,
+        const uint8_t *serialized_data, size_t serialized_len,
+        ec_public_key *identity_key,
+        signal_context *global_context)
+{
+    int result = 0;
+    device_consistency_message *result_message = 0;
+    Textsecure__DeviceConsistencyCodeMessage *message_structure = 0;
+    signal_buffer *commitment_buffer = 0;
+    signal_buffer *vrf_output_buffer = 0;
+
+    /* Create message instance */
+    result = device_consistency_message_create(&result_message);
+    if(result < 0) {
+        goto complete;
+    }
+
+    /* Deserialize the message */
+    message_structure = textsecure__device_consistency_code_message__unpack(0, serialized_len, serialized_data);
+    if(!message_structure) {
+        result = SG_ERR_INVALID_PROTO_BUF;
+        goto complete;
+    }
+
+    if(!message_structure->has_generation || !message_structure->has_signature) {
+        result = SG_ERR_INVALID_PROTO_BUF;
+        goto complete;
+    }
+
+    /* Verify VRF signature */
+    commitment_buffer = device_consistency_commitment_get_serialized(commitment);
+    result = curve_verify_vrf_signature(global_context, &vrf_output_buffer,
+            identity_key,
+            signal_buffer_data(commitment_buffer), signal_buffer_len(commitment_buffer),
+            message_structure->signature.data, message_structure->signature.len);
+    if(result < 0) {
+        goto complete;
+    }
+
+    /* Assign the message fields */
+    result_message->generation = message_structure->generation;
+
+    device_consistency_signature_create(&result_message->signature,
+            message_structure->signature.data, message_structure->signature.len,
+            signal_buffer_data(vrf_output_buffer), signal_buffer_len(vrf_output_buffer));
+    if(result < 0) {
+        goto complete;
+    }
+
+    result_message->serialized = signal_buffer_create(serialized_data, serialized_len);
+    if(!result_message->serialized) {
+        result = SG_ERR_NOMEM;
+    }
+
+complete:
+    if(message_structure) {
+        textsecure__device_consistency_code_message__free_unpacked(message_structure, 0);
+    }
+    signal_buffer_free(vrf_output_buffer);
+    if(result >= 0) {
+        *message = result_message;
+    }
+    else {
+        SIGNAL_UNREF(result_message);
+    }
+    if(result == SG_ERR_INVALID_PROTO_BUF
+            || result == SG_ERR_INVALID_KEY
+            || result == SG_ERR_VRF_SIG_VERIF_FAILED) {
+        result = SG_ERR_INVALID_MESSAGE;
+    }
+    return result;
+}
+
+signal_buffer *device_consistency_message_get_serialized(const device_consistency_message *message)
+{
+    assert(message);
+    return message->serialized;
+}
+
+device_consistency_signature *device_consistency_message_get_signature(const device_consistency_message *message)
+{
+    assert(message);
+    return message->signature;
+}
+
+uint32_t device_consistency_signature_get_generation(const device_consistency_message *message)
+{
+    assert(message);
+    return message->generation;
+}
+
+void device_consistency_message_destroy(signal_type_base *type)
+{
+    device_consistency_message *message = (device_consistency_message *)type;
+    SIGNAL_UNREF(message->signature);
+    signal_buffer_free(message->serialized);
+    free(message);
+}
+
+/*------------------------------------------------------------------------*/
+
+int device_consistency_code_generate_for(device_consistency_commitment *commitment,
+        device_consistency_signature_list *signatures,
+        char **code_string,
+        signal_context *global_context)
+{
+    int result = 0;
+    char *result_string = 0;
+    void *digest_context = 0;
+    device_consistency_signature_list *sorted_list = 0;
+    uint8_t version_data[2];
+    signal_buffer *commitment_buffer;
+    unsigned int list_size;
+    unsigned int i;
+    signal_buffer *hash_buffer = 0;
+    uint8_t *data = 0;
+    size_t len = 0;
+    char *encoded_string = 0;
+
+    sorted_list = device_consistency_signature_list_copy(signatures);
+    if(!sorted_list) {
+        result = SG_ERR_NOMEM;
+        goto complete;
+    }
+
+    device_consistency_signature_list_sort(sorted_list);
+
+    result = signal_sha512_digest_init(global_context, &digest_context);
+    if(result < 0) {
+        goto complete;
+    }
+
+    version_data[1] = (uint8_t)(CODE_VERSION);
+    version_data[0] = (uint8_t)(CODE_VERSION >> 8);
+
+    result = signal_sha512_digest_update(global_context, digest_context,
+            version_data, sizeof(version_data));
+    if(result < 0) {
+        goto complete;
+    }
+
+    commitment_buffer = device_consistency_commitment_get_serialized(commitment);
+    result = signal_sha512_digest_update(global_context, digest_context,
+            signal_buffer_data(commitment_buffer),
+            signal_buffer_len(commitment_buffer));
+    if(result < 0) {
+        goto complete;
+    }
+
+    list_size = device_consistency_signature_list_size(sorted_list);
+    for(i = 0; i < list_size; i++) {
+        device_consistency_signature *signature = device_consistency_signature_list_at(sorted_list, i);
+        signal_buffer *vrf_output = device_consistency_signature_get_vrf_output(signature);
+
+        result = signal_sha512_digest_update(global_context, digest_context,
+                signal_buffer_data(vrf_output),
+                signal_buffer_len(vrf_output));
+        if(result < 0) {
+            goto complete;
+        }
+    }
+
+    result = signal_sha512_digest_final(global_context, digest_context, &hash_buffer);
+    if(result < 0) {
+        goto complete;
+    }
+
+    data = signal_buffer_data(hash_buffer);
+    len = signal_buffer_len(hash_buffer);
+
+    if(len < 10) {
+        result = SG_ERR_UNKNOWN;
+        goto complete;
+    }
+
+    encoded_string = malloc(11);
+    if(!encoded_string) {
+        result = SG_ERR_NOMEM;
+        goto complete;
+    }
+
+    for(i = 0; i < 10; i += 5) {
+        uint64_t chunk = ((uint64_t)data[i] & 0xFFL) << 32 |
+                ((uint64_t)data[i + 1] & 0xFFL) << 24 |
+                ((uint64_t)data[i + 2] & 0xFFL) << 16 |
+                ((uint64_t)data[i + 3] & 0xFFL) << 8 |
+                ((uint64_t)data[i + 4] & 0xFFL);
+#if _WINDOWS
+        sprintf_s(encoded_string + i, 6, "%05d", (int)(chunk % 100000));
+#else
+        snprintf(encoded_string + i, 6, "%05d", (int)(chunk % 100000));
+#endif
+    }
+
+    result_string = malloc(7);
+    if(!result_string) {
+        result = SG_ERR_NOMEM;
+        goto complete;
+    }
+
+    memcpy(result_string, encoded_string, 6);
+    result_string[6] = '\0';
+
+complete:
+    if(sorted_list) {
+        device_consistency_signature_list_free(sorted_list);
+    }
+    if(digest_context) {
+        signal_sha512_digest_cleanup(global_context, digest_context);
+    }
+    signal_buffer_free(hash_buffer);
+    free(encoded_string);
+    if(result >= 0) {
+        *code_string = result_string;
+    }
+    return result;
+}
+
+/*------------------------------------------------------------------------*/
+
+device_consistency_signature_list *device_consistency_signature_list_alloc()
+{
+    device_consistency_signature_list *list = malloc(sizeof(device_consistency_signature_list));
+    if(!list) {
+        return 0;
+    }
+    memset(list, 0, sizeof(device_consistency_signature_list));
+    utarray_new(list->values, &ut_ptr_icd);
+    return list;
+}
+
+device_consistency_signature_list *device_consistency_signature_list_copy(const device_consistency_signature_list *list)
+{
+    device_consistency_signature_list *result = 0;
+    unsigned int size;
+    unsigned int i;
+    device_consistency_signature **p;
+
+    result = device_consistency_signature_list_alloc();
+    if(!result) {
+        return 0;
+    }
+
+    size = utarray_len(list->values);
+
+    utarray_reserve(result->values, size);
+
+    for (i = 0; i < size; i++) {
+        p = (device_consistency_signature **)utarray_eltptr(list->values, i);
+        device_consistency_signature_list_push_back(result, *p);
+    }
+
+    return result;
+}
+
+void device_consistency_signature_list_push_back(device_consistency_signature_list *list, device_consistency_signature *value)
+{
+    assert(list);
+    assert(value);
+    SIGNAL_REF(value);
+    utarray_push_back(list->values, &value);
+}
+
+unsigned int device_consistency_signature_list_size(const device_consistency_signature_list *list)
+{
+    assert(list);
+    return utarray_len(list->values);
+}
+
+device_consistency_signature *device_consistency_signature_list_at(const device_consistency_signature_list *list, unsigned int index)
+{
+    device_consistency_signature **value = 0;
+
+    assert(list);
+    assert(index < utarray_len(list->values));
+
+    value = (device_consistency_signature **)utarray_eltptr(list->values, index);
+
+    assert(*value);
+
+    return *value;
+}
+
+int device_consistency_signature_list_sort_comparator(const void *a, const void *b)
+{
+    int result;
+    const device_consistency_signature *sig1 = *((const device_consistency_signature **)a);
+    const device_consistency_signature *sig2 = *((const device_consistency_signature **)b);
+    signal_buffer *buf1 = device_consistency_signature_get_signature(sig1);
+    signal_buffer *buf2 = device_consistency_signature_get_signature(sig2);
+    size_t len1 = signal_buffer_len(buf1);
+    size_t len2 = signal_buffer_len(buf2);
+
+    if(len1 == len2) {
+        result = memcmp(signal_buffer_data(buf1), signal_buffer_data(buf2), len1);
+    }
+    else {
+        result = len1 - len2;
+    }
+
+    return result;
+}
+
+void device_consistency_signature_list_sort(device_consistency_signature_list *list)
+{
+    assert(list);
+    utarray_sort(list->values, device_consistency_signature_list_sort_comparator);
+}
+
+void device_consistency_signature_list_free(device_consistency_signature_list *list)
+{
+    unsigned int size;
+    unsigned int i;
+    device_consistency_signature **p;
+    if(list) {
+        size = utarray_len(list->values);
+        for (i = 0; i < size; i++) {
+            p = (device_consistency_signature **)utarray_eltptr(list->values, i);
+            SIGNAL_UNREF(*p);
+        }
+        utarray_free(list->values);
+        free(list);
+    }
+}
diff --git a/libs/libaxolotl/src/device_consistency.h b/libs/libaxolotl/src/device_consistency.h
new file mode 100644
index 0000000000..37c683052f
--- /dev/null
+++ b/libs/libaxolotl/src/device_consistency.h
@@ -0,0 +1,60 @@
+#ifndef DEVICE_CONSISTENCY_H
+#define DEVICE_CONSISTENCY_H
+
+#include "signal_protocol_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int device_consistency_signature_create(device_consistency_signature **signature,
+        const uint8_t *signature_data, size_t signature_len,
+        const uint8_t *vrf_output_data, size_t vrf_output_len);
+
+signal_buffer *device_consistency_signature_get_signature(const device_consistency_signature *signature);
+signal_buffer *device_consistency_signature_get_vrf_output(const device_consistency_signature *signature);
+
+void device_consistency_signature_destroy(signal_type_base *type);
+
+int device_consistency_commitment_create(device_consistency_commitment **commitment,
+        uint32_t generation, ec_public_key_list *identity_key_list,
+        signal_context *global_context);
+
+uint32_t device_consistency_commitment_get_generation(const device_consistency_commitment *commitment);
+signal_buffer *device_consistency_commitment_get_serialized(const device_consistency_commitment *commitment);
+
+void device_consistency_commitment_destroy(signal_type_base *type);
+
+int device_consistency_message_create_from_pair(device_consistency_message **message,
+        device_consistency_commitment *commitment,
+        ec_key_pair *identity_key_pair,
+        signal_context *global_context);
+int device_consistency_message_create_from_serialized(device_consistency_message **message,
+        device_consistency_commitment *commitment,
+        const uint8_t *serialized_data, size_t serialized_len,
+        ec_public_key *identity_key,
+        signal_context *global_context);
+
+signal_buffer *device_consistency_message_get_serialized(const device_consistency_message *message);
+device_consistency_signature *device_consistency_message_get_signature(const device_consistency_message *message);
+uint32_t device_consistency_signature_get_generation(const device_consistency_message *message);
+
+void device_consistency_message_destroy(signal_type_base *type);
+
+int device_consistency_code_generate_for(device_consistency_commitment *commitment,
+        device_consistency_signature_list *signatures,
+        char **code_string,
+        signal_context *global_context);
+
+device_consistency_signature_list *device_consistency_signature_list_alloc(void);
+device_consistency_signature_list *device_consistency_signature_list_copy(const device_consistency_signature_list *list);
+void device_consistency_signature_list_push_back(device_consistency_signature_list *list, device_consistency_signature *value);
+unsigned int device_consistency_signature_list_size(const device_consistency_signature_list *list);
+device_consistency_signature *device_consistency_signature_list_at(const device_consistency_signature_list *list, unsigned int index);
+void device_consistency_signature_list_free(device_consistency_signature_list *list);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* DEVICE_CONSISTENCY_H */
diff --git a/libs/libaxolotl/src/fingerprint.c b/libs/libaxolotl/src/fingerprint.c
index f5a00248b2..42827825cc 100644
--- a/libs/libaxolotl/src/fingerprint.c
+++ b/libs/libaxolotl/src/fingerprint.c
@@ -3,21 +3,24 @@
 #include <assert.h>
 #include <string.h>
 
-#include "axolotl_internal.h"
 #include "FingerprintProtocol.pb-c.h"
+#include "signal_protocol_internal.h"
 
 #define VERSION 0
+#define SHA512_DIGEST_LENGTH 64
+
+#define MAX(a,b) (((a)>(b))?(a):(b))
 
 struct fingerprint
 {
-    axolotl_type_base base;
+    signal_type_base base;
     displayable_fingerprint *displayable;
     scannable_fingerprint *scannable;
 };
 
 struct displayable_fingerprint
 {
-    axolotl_type_base base;
+    signal_type_base base;
     char *local_fingerprint;
     char *remote_fingerprint;
     char *display_text;
@@ -25,7 +28,7 @@ struct displayable_fingerprint
 
 struct scannable_fingerprint
 {
-    axolotl_type_base base;
+    signal_type_base base;
     uint32_t version;
     char *local_stable_identifier;
     ec_public_key *local_identity_key;
@@ -36,13 +39,13 @@ struct scannable_fingerprint
 struct fingerprint_generator
 {
     int iterations;
-    axolotl_context *global_context;
+    signal_context *global_context;
 };
 
 static int fingerprint_generator_create_display_string(fingerprint_generator *generator, char **display_string,
         const char *local_stable_identifier, ec_public_key *identity_key);
 
-int fingerprint_generator_create(fingerprint_generator **generator, int iterations, axolotl_context *global_context)
+int fingerprint_generator_create(fingerprint_generator **generator, int iterations, signal_context *global_context)
 {
     fingerprint_generator *result_generator;
 
@@ -50,7 +53,7 @@ int fingerprint_generator_create(fingerprint_generator **generator, int iteratio
 
     result_generator = malloc(sizeof(fingerprint_generator));
     if(!result_generator) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
     memset(result_generator, 0, sizeof(fingerprint_generator));
 
@@ -106,8 +109,8 @@ complete:
     if(displayable_remote) {
         free(displayable_remote);
     }
-    AXOLOTL_UNREF(displayable);
-    AXOLOTL_UNREF(scannable);
+    SIGNAL_UNREF(displayable);
+    SIGNAL_UNREF(scannable);
     if(result >= 0) {
         *fingerprint_val = result_fingerprint;
     }
@@ -119,9 +122,10 @@ int fingerprint_generator_create_display_string(fingerprint_generator *generator
 {
     int result = 0;
     char *result_string = 0;
-    axolotl_buffer *identity_buffer = 0;
-    axolotl_buffer *hash_buffer = 0;
-    axolotl_buffer *hash_out_buffer = 0;
+    void *digest_context = 0;
+    signal_buffer *identity_buffer = 0;
+    signal_buffer *hash_buffer = 0;
+    signal_buffer *hash_out_buffer = 0;
     uint8_t *data = 0;
     size_t len = 0;
     int i = 0;
@@ -129,55 +133,74 @@ int fingerprint_generator_create_display_string(fingerprint_generator *generator
     assert(generator);
     assert(stable_identifier);
     assert(identity_key);
-    assert(generator->global_context->crypto_provider.sha512_digest_func);
+
+    result = signal_sha512_digest_init(generator->global_context, &digest_context);
+    if(result < 0) {
+        goto complete;
+    }
 
     result = ec_public_key_serialize(&identity_buffer, identity_key);
     if(result < 0) {
         goto complete;
     }
 
-    len = 2 + axolotl_buffer_len(identity_buffer) + strlen(stable_identifier);
+    len = 2 + signal_buffer_len(identity_buffer) + strlen(stable_identifier);
 
-    hash_buffer = axolotl_buffer_alloc(len);
+    hash_buffer = signal_buffer_alloc(len);
     if(!hash_buffer) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    data = axolotl_buffer_data(hash_buffer);
+    data = signal_buffer_data(hash_buffer);
 
     memset(data, 0, len);
 
     data[0] = 0;
     data[1] = (uint8_t)VERSION;
-    memcpy(data + 2, axolotl_buffer_data(identity_buffer), axolotl_buffer_len(identity_buffer));
-    memcpy(data + 2 + axolotl_buffer_len(identity_buffer), stable_identifier, strlen(stable_identifier));
+    memcpy(data + 2, signal_buffer_data(identity_buffer), signal_buffer_len(identity_buffer));
+    memcpy(data + 2 + signal_buffer_len(identity_buffer), stable_identifier, strlen(stable_identifier));
 
     for(i = 0; i < generator->iterations; i++) {
-        result = axolotl_sha512_digest(generator->global_context,
-                &hash_out_buffer,
-                axolotl_buffer_data(hash_buffer),
-                axolotl_buffer_len(hash_buffer));
+        data = signal_buffer_data(hash_buffer);
+        len = signal_buffer_len(hash_buffer);
+
+        result = signal_sha512_digest_update(generator->global_context,
+                digest_context, data, len);
         if(result < 0) {
             goto complete;
         }
 
-        axolotl_buffer_free(hash_buffer);
+        result = signal_sha512_digest_update(generator->global_context,
+                digest_context,
+                signal_buffer_data(identity_buffer),
+                signal_buffer_len(identity_buffer));
+        if(result < 0) {
+            goto complete;
+        }
+
+        result = signal_sha512_digest_final(generator->global_context,
+                digest_context, &hash_out_buffer);
+        if(result < 0) {
+            goto complete;
+        }
+
+        signal_buffer_free(hash_buffer);
         hash_buffer = hash_out_buffer;
         hash_out_buffer = 0;
     }
 
-    data = axolotl_buffer_data(hash_buffer);
-    len = axolotl_buffer_len(hash_buffer);
+    data = signal_buffer_data(hash_buffer);
+    len = signal_buffer_len(hash_buffer);
 
     if(len < 30) {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
     result_string = malloc(31);
     if(!result_string) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
@@ -195,9 +218,12 @@ int fingerprint_generator_create_display_string(fingerprint_generator *generator
     }
 
 complete:
-    axolotl_buffer_free(identity_buffer);
-    axolotl_buffer_free(hash_buffer);
-    axolotl_buffer_free(hash_out_buffer);
+    if(digest_context) {
+        signal_sha512_digest_cleanup(generator->global_context, digest_context);
+    }
+    signal_buffer_free(identity_buffer);
+    signal_buffer_free(hash_buffer);
+    signal_buffer_free(hash_out_buffer);
     if(result >= 0) {
         *display_string = result_string;
     }
@@ -215,18 +241,18 @@ int fingerprint_create(fingerprint **fingerprint_val, displayable_fingerprint *d
 {
     fingerprint *result = malloc(sizeof(fingerprint));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
     memset(result, 0, sizeof(fingerprint));
-    AXOLOTL_INIT(result, fingerprint_destroy);
+    SIGNAL_INIT(result, fingerprint_destroy);
     if(displayable) {
         result->displayable = displayable;
-        AXOLOTL_REF(displayable);
+        SIGNAL_REF(displayable);
     }
     if(scannable) {
         result->scannable = scannable;
-        AXOLOTL_REF(scannable);
+        SIGNAL_REF(scannable);
     }
 
     *fingerprint_val = result;
@@ -246,11 +272,11 @@ scannable_fingerprint *fingerprint_get_scannable(fingerprint *fingerprint_val)
     return fingerprint_val->scannable;
 }
 
-void fingerprint_destroy(axolotl_type_base *type)
+void fingerprint_destroy(signal_type_base *type)
 {
     fingerprint *fingerprint_val = (fingerprint *)type;
-    AXOLOTL_UNREF(fingerprint_val->displayable);
-    AXOLOTL_UNREF(fingerprint_val->scannable);
+    SIGNAL_UNREF(fingerprint_val->displayable);
+    SIGNAL_UNREF(fingerprint_val->scannable);
     free(fingerprint_val);
 }
 
@@ -263,26 +289,26 @@ int displayable_fingerprint_create(displayable_fingerprint **displayable, const
     char *display_text = 0;
 
     if(!local_fingerprint || !remote_fingerprint) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
 
     result_displayable = malloc(sizeof(displayable_fingerprint));
     if(!result_displayable) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
     memset(result_displayable, 0, sizeof(displayable_fingerprint));
-    AXOLOTL_INIT(result_displayable, displayable_fingerprint_destroy);
+    SIGNAL_INIT(result_displayable, displayable_fingerprint_destroy);
 
     result_displayable->local_fingerprint = strdup(local_fingerprint);
     if(!result_displayable->local_fingerprint) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
     result_displayable->remote_fingerprint = strdup(remote_fingerprint);
     if(!result_displayable->remote_fingerprint) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
@@ -291,7 +317,7 @@ int displayable_fingerprint_create(displayable_fingerprint **displayable, const
 
     display_text = malloc(local_len + remote_len + 1);
     if(!display_text) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
@@ -308,7 +334,7 @@ int displayable_fingerprint_create(displayable_fingerprint **displayable, const
 
 complete:
     if(result < 0) {
-        AXOLOTL_UNREF(result_displayable);
+        SIGNAL_UNREF(result_displayable);
     }
     else {
         *displayable = result_displayable;
@@ -335,7 +361,7 @@ const char *displayable_fingerprint_text(displayable_fingerprint *displayable)
     return displayable->display_text;
 }
 
-void displayable_fingerprint_destroy(axolotl_type_base *type)
+void displayable_fingerprint_destroy(signal_type_base *type)
 {
     displayable_fingerprint *displayable = (displayable_fingerprint *)type;
     if(displayable->local_fingerprint) {
@@ -360,40 +386,40 @@ int scannable_fingerprint_create(scannable_fingerprint **scannable,
 
     if(!local_stable_identifier || !local_identity_key ||
             !remote_stable_identifier || !remote_identity_key) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
 
     result_scannable = malloc(sizeof(scannable_fingerprint));
     if(!result_scannable) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
     memset(result_scannable, 0, sizeof(scannable_fingerprint));
-    AXOLOTL_INIT(result_scannable, scannable_fingerprint_destroy);
+    SIGNAL_INIT(result_scannable, scannable_fingerprint_destroy);
 
     result_scannable->version = version;
 
     result_scannable->local_stable_identifier = strdup(local_stable_identifier);
     if(!result_scannable->local_stable_identifier) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
     result_scannable->local_identity_key = local_identity_key;
-    AXOLOTL_REF(local_identity_key);
+    SIGNAL_REF(local_identity_key);
 
     result_scannable->remote_stable_identifier = strdup(remote_stable_identifier);
     if(!result_scannable->remote_stable_identifier) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
     result_scannable->remote_identity_key = remote_identity_key;
-    AXOLOTL_REF(remote_identity_key);
+    SIGNAL_REF(remote_identity_key);
 
 complete:
     if(result < 0) {
-        AXOLOTL_UNREF(result_scannable);
+        SIGNAL_UNREF(result_scannable);
     }
     else {
         *scannable = result_scannable;
@@ -402,11 +428,11 @@ complete:
     return result;
 }
 
-int scannable_fingerprint_serialize(axolotl_buffer **buffer, const scannable_fingerprint *scannable)
+int scannable_fingerprint_serialize(signal_buffer **buffer, const scannable_fingerprint *scannable)
 {
     int result = 0;
     size_t result_size = 0;
-    axolotl_buffer *result_buf = 0;
+    signal_buffer *result_buf = 0;
     Textsecure__CombinedFingerprint combined_fingerprint = TEXTSECURE__COMBINED_FINGERPRINT__INIT;
     Textsecure__FingerprintData local_fingerprint = TEXTSECURE__FINGERPRINT_DATA__INIT;
     Textsecure__FingerprintData remote_fingerprint = TEXTSECURE__FINGERPRINT_DATA__INIT;
@@ -417,7 +443,7 @@ int scannable_fingerprint_serialize(axolotl_buffer **buffer, const scannable_fin
     combined_fingerprint.has_version = 1;
 
     if(scannable->local_stable_identifier && scannable->local_identity_key) {
-        axolotl_str_serialize_protobuf(&local_fingerprint.identifier, scannable->local_stable_identifier);
+        signal_protocol_str_serialize_protobuf(&local_fingerprint.identifier, scannable->local_stable_identifier);
         local_fingerprint.has_identifier = 1;
 
         result = ec_public_key_serialize_protobuf(&local_fingerprint.publickey, scannable->local_identity_key);
@@ -430,7 +456,7 @@ int scannable_fingerprint_serialize(axolotl_buffer **buffer, const scannable_fin
     }
 
     if(scannable->remote_stable_identifier && scannable->remote_identity_key) {
-        axolotl_str_serialize_protobuf(&remote_fingerprint.identifier, scannable->remote_stable_identifier);
+        signal_protocol_str_serialize_protobuf(&remote_fingerprint.identifier, scannable->remote_stable_identifier);
         remote_fingerprint.has_identifier = 1;
 
         result = ec_public_key_serialize_protobuf(&remote_fingerprint.publickey, scannable->remote_identity_key);
@@ -444,17 +470,17 @@ int scannable_fingerprint_serialize(axolotl_buffer **buffer, const scannable_fin
 
     len = textsecure__combined_fingerprint__get_packed_size(&combined_fingerprint);
 
-    result_buf = axolotl_buffer_alloc(len);
+    result_buf = signal_buffer_alloc(len);
     if(!result_buf) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    data = axolotl_buffer_data(result_buf);
+    data = signal_buffer_data(result_buf);
     result_size = textsecure__combined_fingerprint__pack(&combined_fingerprint, data);
     if(result_size != len) {
-        axolotl_buffer_free(result_buf);
-        result = AX_ERR_INVALID_PROTO_BUF;
+        signal_buffer_free(result_buf);
+        result = SG_ERR_INVALID_PROTO_BUF;
         result_buf = 0;
         goto complete;
     }
@@ -472,7 +498,7 @@ complete:
     return result;
 }
 
-int scannable_fingerprint_deserialize(scannable_fingerprint **scannable, const uint8_t *data, size_t len, axolotl_context *global_context)
+int scannable_fingerprint_deserialize(scannable_fingerprint **scannable, const uint8_t *data, size_t len, signal_context *global_context)
 {
     int result = 0;
     Textsecure__CombinedFingerprint *combined_fingerprint = 0;
@@ -484,7 +510,7 @@ int scannable_fingerprint_deserialize(scannable_fingerprint **scannable, const u
 
     combined_fingerprint = textsecure__combined_fingerprint__unpack(0, len, data);
     if(!combined_fingerprint) {
-        result = AX_ERR_INVALID_PROTO_BUF;
+        result = SG_ERR_INVALID_PROTO_BUF;
         goto complete;
     }
 
@@ -494,9 +520,9 @@ int scannable_fingerprint_deserialize(scannable_fingerprint **scannable, const u
 
     if(combined_fingerprint->localfingerprint) {
         if(combined_fingerprint->localfingerprint->has_identifier) {
-            local_stable_identifier = axolotl_str_deserialize_protobuf(&combined_fingerprint->localfingerprint->identifier);
+            local_stable_identifier = signal_protocol_str_deserialize_protobuf(&combined_fingerprint->localfingerprint->identifier);
             if(!local_stable_identifier) {
-                result = AX_ERR_NOMEM;
+                result = SG_ERR_NOMEM;
                 goto complete;
             }
         }
@@ -513,9 +539,9 @@ int scannable_fingerprint_deserialize(scannable_fingerprint **scannable, const u
 
     if(combined_fingerprint->remotefingerprint) {
         if(combined_fingerprint->remotefingerprint->has_identifier) {
-            remote_stable_identifier = axolotl_str_deserialize_protobuf(&combined_fingerprint->remotefingerprint->identifier);
+            remote_stable_identifier = signal_protocol_str_deserialize_protobuf(&combined_fingerprint->remotefingerprint->identifier);
             if(!remote_stable_identifier) {
-                result = AX_ERR_NOMEM;
+                result = SG_ERR_NOMEM;
                 goto complete;
             }
         }
@@ -542,13 +568,13 @@ complete:
         free(local_stable_identifier);
     }
     if(local_identity_key) {
-        AXOLOTL_UNREF(local_identity_key);
+        SIGNAL_UNREF(local_identity_key);
     }
     if(remote_stable_identifier) {
         free(remote_stable_identifier);
     }
     if(remote_identity_key) {
-        AXOLOTL_UNREF(remote_identity_key);
+        SIGNAL_UNREF(remote_identity_key);
     }
     return result;
 }
@@ -587,15 +613,15 @@ int scannable_fingerprint_compare(scannable_fingerprint *scannable, const scanna
 {
     if(!other_scannable->remote_identity_key || !other_scannable->local_identity_key ||
             other_scannable->version != scannable->version) {
-        return AX_ERR_FP_VERSION_MISMATCH;
+        return SG_ERR_FP_VERSION_MISMATCH;
     }
 
     if(strcmp(scannable->local_stable_identifier, other_scannable->remote_stable_identifier) != 0) {
-        return AX_ERR_FP_IDENT_MISMATCH;
+        return SG_ERR_FP_IDENT_MISMATCH;
     }
 
     if(strcmp(scannable->remote_stable_identifier, other_scannable->local_stable_identifier) != 0) {
-        return AX_ERR_FP_IDENT_MISMATCH;
+        return SG_ERR_FP_IDENT_MISMATCH;
     }
 
     if(ec_public_key_compare(scannable->local_identity_key, other_scannable->remote_identity_key) != 0) {
@@ -609,7 +635,7 @@ int scannable_fingerprint_compare(scannable_fingerprint *scannable, const scanna
     return 1;
 }
 
-void scannable_fingerprint_destroy(axolotl_type_base *type)
+void scannable_fingerprint_destroy(signal_type_base *type)
 {
     scannable_fingerprint *scannable = (scannable_fingerprint *)type;
 
@@ -617,13 +643,13 @@ void scannable_fingerprint_destroy(axolotl_type_base *type)
         free(scannable->local_stable_identifier);
     }
 
-    AXOLOTL_UNREF(scannable->local_identity_key);
+    SIGNAL_UNREF(scannable->local_identity_key);
 
     if(scannable->remote_stable_identifier) {
         free(scannable->remote_stable_identifier);
     }
 
-    AXOLOTL_UNREF(scannable->remote_identity_key);
+    SIGNAL_UNREF(scannable->remote_identity_key);
 
     free(scannable);
 }
diff --git a/libs/libaxolotl/src/fingerprint.h b/libs/libaxolotl/src/fingerprint.h
index 25d80a4e77..4d61e4f788 100644
--- a/libs/libaxolotl/src/fingerprint.h
+++ b/libs/libaxolotl/src/fingerprint.h
@@ -1,7 +1,7 @@
 #ifndef FINGERPRINT_H
 #define FINGERPRINT_H
 
-#include "axolotl_types.h"
+#include "signal_protocol_types.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -23,7 +23,7 @@ extern "C" {
  * @param global_context the global library context
  * @return 0 on success, or negative on failure
  */
-int fingerprint_generator_create(fingerprint_generator **generator, int iterations, axolotl_context *global_context);
+int fingerprint_generator_create(fingerprint_generator **generator, int iterations, signal_context *global_context);
 
 /**
  * Generate a scannable and displayble fingerprint.
@@ -45,21 +45,21 @@ void fingerprint_generator_free(fingerprint_generator *generator);
 int fingerprint_create(fingerprint **fingerprint_val, displayable_fingerprint *displayable, scannable_fingerprint *scannable);
 displayable_fingerprint *fingerprint_get_displayable(fingerprint *fingerprint_val);
 scannable_fingerprint *fingerprint_get_scannable(fingerprint *fingerprint_val);
-void fingerprint_destroy(axolotl_type_base *type);
+void fingerprint_destroy(signal_type_base *type);
 
 int displayable_fingerprint_create(displayable_fingerprint **displayable, const char *local_fingerprint, const char *remote_fingerprint);
 const char *displayable_fingerprint_local(displayable_fingerprint *displayable);
 const char *displayable_fingerprint_remote(displayable_fingerprint *displayable);
 const char *displayable_fingerprint_text(displayable_fingerprint *displayable);
-void displayable_fingerprint_destroy(axolotl_type_base *type);
+void displayable_fingerprint_destroy(signal_type_base *type);
 
 int scannable_fingerprint_create(scannable_fingerprint **scannable,
         uint32_t version,
         const char *local_stable_identifier, ec_public_key *local_identity_key,
         const char *remote_stable_identifier, ec_public_key *remote_identity_key);
 
-int scannable_fingerprint_serialize(axolotl_buffer **buffer, const scannable_fingerprint *scannable);
-int scannable_fingerprint_deserialize(scannable_fingerprint **scannable, const uint8_t *data, size_t len, axolotl_context *global_context);
+int scannable_fingerprint_serialize(signal_buffer **buffer, const scannable_fingerprint *scannable);
+int scannable_fingerprint_deserialize(scannable_fingerprint **scannable, const uint8_t *data, size_t len, signal_context *global_context);
 uint32_t scannable_fingerprint_get_version(scannable_fingerprint *scannable);
 const char *scannable_fingerprint_get_local_stable_identifier(scannable_fingerprint *scannable);
 ec_public_key *scannable_fingerprint_get_local_identity_key(scannable_fingerprint *scannable);
@@ -72,12 +72,12 @@ ec_public_key *scannable_fingerprint_get_remote_identity_key(scannable_fingerpri
  * @param other_scannable The data from the scanned code
  * @retval 1 if the scannable codes match
  * @retval 0 if the scannable codes do not match
- * @retval AX_ERR_FP_VERSION_MISMATCH if the scanned fingerprint is the wrong version
- * @retval AX_ERR_FP_IDENT_MISMATCH if the scanned fingerprint is for the wrong stable identifier
+ * @retval SG_ERR_FP_VERSION_MISMATCH if the scanned fingerprint is the wrong version
+ * @retval SG_ERR_FP_IDENT_MISMATCH if the scanned fingerprint is for the wrong stable identifier
  */
 int scannable_fingerprint_compare(scannable_fingerprint *scannable, const scannable_fingerprint *other_scannable);
 
-void scannable_fingerprint_destroy(axolotl_type_base *type);
+void scannable_fingerprint_destroy(signal_type_base *type);
 
 #ifdef __cplusplus
 }
diff --git a/libs/libaxolotl/src/group_cipher.c b/libs/libaxolotl/src/group_cipher.c
index 752c2e16d4..1b6f8af2c9 100644
--- a/libs/libaxolotl/src/group_cipher.c
+++ b/libs/libaxolotl/src/group_cipher.c
@@ -2,28 +2,28 @@
 
 #include <assert.h>
 #include <string.h>
-#include "axolotl_internal.h"
 #include "protocol.h"
 #include "sender_key.h"
 #include "sender_key_record.h"
 #include "sender_key_state.h"
+#include "signal_protocol_internal.h"
 
 struct group_cipher
 {
-    axolotl_store_context *store;
-    const axolotl_sender_key_name *sender_key_id;
-    axolotl_context *global_context;
-    int (*decrypt_callback)(group_cipher *cipher, axolotl_buffer *plaintext, void *decrypt_context);
+    signal_protocol_store_context *store;
+    const signal_protocol_sender_key_name *sender_key_id;
+    signal_context *global_context;
+    int (*decrypt_callback)(group_cipher *cipher, signal_buffer *plaintext, void *decrypt_context);
     int inside_callback;
     void *user_data;
 };
 
 static int group_cipher_get_sender_key(group_cipher *cipher, sender_message_key **sender_key, sender_key_state *state, uint32_t iteration);
-static int group_cipher_decrypt_callback(group_cipher *cipher, axolotl_buffer *plaintext, void *decrypt_context);
+static int group_cipher_decrypt_callback(group_cipher *cipher, signal_buffer *plaintext, void *decrypt_context);
 
 int group_cipher_create(group_cipher **cipher,
-        axolotl_store_context *store, const axolotl_sender_key_name *sender_key_id,
-        axolotl_context *global_context)
+        signal_protocol_store_context *store, const signal_protocol_sender_key_name *sender_key_id,
+        signal_context *global_context)
 {
     group_cipher *result_cipher;
 
@@ -32,7 +32,7 @@ int group_cipher_create(group_cipher **cipher,
 
     result_cipher = malloc(sizeof(group_cipher));
     if(!result_cipher) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
     memset(result_cipher, 0, sizeof(group_cipher));
 
@@ -57,7 +57,7 @@ void *group_cipher_get_user_data(group_cipher *cipher)
 }
 
 void group_cipher_set_decryption_callback(group_cipher *cipher,
-        int (*callback)(group_cipher *cipher, axolotl_buffer *plaintext, void *decrypt_context))
+        int (*callback)(group_cipher *cipher, signal_buffer *plaintext, void *decrypt_context))
 {
     assert(cipher);
     cipher->decrypt_callback = callback;
@@ -71,21 +71,22 @@ int group_cipher_encrypt(group_cipher *cipher,
     sender_key_message *result_message = 0;
     sender_key_record *record = 0;
     sender_key_state *state = 0;
+    ec_private_key *signing_key_private = 0;
     sender_message_key *sender_key = 0;
     sender_chain_key *next_chain_key = 0;
-    axolotl_buffer *sender_cipher_key = 0;
-    axolotl_buffer *sender_cipher_iv = 0;
-    axolotl_buffer *ciphertext = 0;
+    signal_buffer *sender_cipher_key = 0;
+    signal_buffer *sender_cipher_iv = 0;
+    signal_buffer *ciphertext = 0;
 
     assert(cipher);
-    axolotl_lock(cipher->global_context);
+    signal_lock(cipher->global_context);
 
     if(cipher->inside_callback == 1) {
-        result = AX_ERR_INVAL;
+        result = SG_ERR_INVAL;
         goto complete;
     }
 
-    result = axolotl_sender_key_load_key(cipher->store, &record, cipher->sender_key_id);
+    result = signal_protocol_sender_key_load_key(cipher->store, &record, cipher->sender_key_id);
     if(result < 0) {
         goto complete;
     }
@@ -95,6 +96,12 @@ int group_cipher_encrypt(group_cipher *cipher,
         goto complete;
     }
 
+    signing_key_private = sender_key_state_get_signing_key_private(state);
+    if(!signing_key_private) {
+        result = SG_ERR_NO_SESSION;
+        goto complete;
+    }
+
     result = sender_chain_key_create_message_key(sender_key_state_get_chain_key(state), &sender_key);
     if(result < 0) {
         goto complete;
@@ -103,9 +110,9 @@ int group_cipher_encrypt(group_cipher *cipher,
     sender_cipher_key = sender_message_key_get_cipher_key(sender_key);
     sender_cipher_iv = sender_message_key_get_iv(sender_key);
 
-    result = axolotl_encrypt(cipher->global_context, &ciphertext, AX_CIPHER_AES_CBC_PKCS5,
-            axolotl_buffer_data(sender_cipher_key), axolotl_buffer_len(sender_cipher_key),
-            axolotl_buffer_data(sender_cipher_iv), axolotl_buffer_len(sender_cipher_iv),
+    result = signal_encrypt(cipher->global_context, &ciphertext, SG_CIPHER_AES_CBC_PKCS5,
+            signal_buffer_data(sender_cipher_key), signal_buffer_len(sender_cipher_key),
+            signal_buffer_data(sender_cipher_iv), signal_buffer_len(sender_cipher_iv),
             padded_plaintext, padded_plaintext_len);
     if(result < 0) {
         goto complete;
@@ -114,8 +121,8 @@ int group_cipher_encrypt(group_cipher *cipher,
     result = sender_key_message_create(&result_message,
             sender_key_state_get_key_id(state),
             sender_message_key_get_iteration(sender_key),
-            axolotl_buffer_data(ciphertext), axolotl_buffer_len(ciphertext),
-            sender_key_state_get_signing_key_private(state),
+            signal_buffer_data(ciphertext), signal_buffer_len(ciphertext),
+            signing_key_private,
             cipher->global_context);
     if(result < 0) {
         goto complete;
@@ -128,55 +135,55 @@ int group_cipher_encrypt(group_cipher *cipher,
 
     sender_key_state_set_chain_key(state, next_chain_key);
 
-    result = axolotl_sender_key_store_key(cipher->store, cipher->sender_key_id, record);
+    result = signal_protocol_sender_key_store_key(cipher->store, cipher->sender_key_id, record);
 
 complete:
     if(result >= 0) {
         *encrypted_message = (ciphertext_message *)result_message;
     }
     else {
-        if(result == AX_ERR_INVALID_KEY_ID) {
-            result = AX_ERR_NO_SESSION;
+        if(result == SG_ERR_INVALID_KEY_ID) {
+            result = SG_ERR_NO_SESSION;
         }
-        AXOLOTL_UNREF(result_message);
+        SIGNAL_UNREF(result_message);
     }
-    axolotl_buffer_free(ciphertext);
-    AXOLOTL_UNREF(next_chain_key);
-    AXOLOTL_UNREF(sender_key);
-    AXOLOTL_UNREF(record);
-    axolotl_unlock(cipher->global_context);
+    signal_buffer_free(ciphertext);
+    SIGNAL_UNREF(next_chain_key);
+    SIGNAL_UNREF(sender_key);
+    SIGNAL_UNREF(record);
+    signal_unlock(cipher->global_context);
     return result;
 }
 
 int group_cipher_decrypt(group_cipher *cipher,
         sender_key_message *ciphertext, void *decrypt_context,
-        axolotl_buffer **plaintext)
+        signal_buffer **plaintext)
 {
     int result = 0;
-    axolotl_buffer *result_buf = 0;
+    signal_buffer *result_buf = 0;
     sender_key_record *record = 0;
     sender_key_state *state = 0;
     sender_message_key *sender_key = 0;
-    axolotl_buffer *sender_cipher_key = 0;
-    axolotl_buffer *sender_cipher_iv = 0;
-    axolotl_buffer *ciphertext_body = 0;
+    signal_buffer *sender_cipher_key = 0;
+    signal_buffer *sender_cipher_iv = 0;
+    signal_buffer *ciphertext_body = 0;
 
     assert(cipher);
-    axolotl_lock(cipher->global_context);
+    signal_lock(cipher->global_context);
 
     if(cipher->inside_callback == 1) {
-        result = AX_ERR_INVAL;
+        result = SG_ERR_INVAL;
         goto complete;
     }
 
-    result = axolotl_sender_key_load_key(cipher->store, &record, cipher->sender_key_id);
+    result = signal_protocol_sender_key_load_key(cipher->store, &record, cipher->sender_key_id);
     if(result < 0) {
         goto complete;
     }
 
     if(sender_key_record_is_empty(record)) {
-        result = AX_ERR_NO_SESSION;
-        axolotl_log(cipher->global_context, AX_LOG_WARNING, "No sender key for: %s::%s::%d",
+        result = SG_ERR_NO_SESSION;
+        signal_log(cipher->global_context, SG_LOG_WARNING, "No sender key for: %s::%s::%d",
                 cipher->sender_key_id->group_id,
                 cipher->sender_key_id->sender.name,
                 cipher->sender_key_id->sender.device_id);
@@ -202,10 +209,10 @@ int group_cipher_decrypt(group_cipher *cipher,
     sender_cipher_iv = sender_message_key_get_iv(sender_key);
     ciphertext_body = sender_key_message_get_ciphertext(ciphertext);
 
-    result = axolotl_decrypt(cipher->global_context, &result_buf, AX_CIPHER_AES_CBC_PKCS5,
-            axolotl_buffer_data(sender_cipher_key), axolotl_buffer_len(sender_cipher_key),
-            axolotl_buffer_data(sender_cipher_iv), axolotl_buffer_len(sender_cipher_iv),
-            axolotl_buffer_data(ciphertext_body), axolotl_buffer_len(ciphertext_body));
+    result = signal_decrypt(cipher->global_context, &result_buf, SG_CIPHER_AES_CBC_PKCS5,
+            signal_buffer_data(sender_cipher_key), signal_buffer_len(sender_cipher_key),
+            signal_buffer_data(sender_cipher_iv), signal_buffer_len(sender_cipher_iv),
+            signal_buffer_data(ciphertext_body), signal_buffer_len(ciphertext_body));
     if(result < 0) {
         goto complete;
     }
@@ -215,21 +222,21 @@ int group_cipher_decrypt(group_cipher *cipher,
         goto complete;
     }
 
-    result = axolotl_sender_key_store_key(cipher->store, cipher->sender_key_id, record);
+    result = signal_protocol_sender_key_store_key(cipher->store, cipher->sender_key_id, record);
 
 complete:
-    AXOLOTL_UNREF(sender_key);
-    AXOLOTL_UNREF(record);
+    SIGNAL_UNREF(sender_key);
+    SIGNAL_UNREF(record);
     if(result >= 0) {
         *plaintext = result_buf;
     }
     else {
-        if(result == AX_ERR_INVALID_KEY || result == AX_ERR_INVALID_KEY_ID) {
-            result = AX_ERR_INVALID_MESSAGE;
+        if(result == SG_ERR_INVALID_KEY || result == SG_ERR_INVALID_KEY_ID) {
+            result = SG_ERR_INVALID_MESSAGE;
         }
-        axolotl_buffer_free(result_buf);
+        signal_buffer_free(result_buf);
     }
-    axolotl_unlock(cipher->global_context);
+    signal_unlock(cipher->global_context);
     return result;
 }
 
@@ -242,19 +249,19 @@ int group_cipher_get_sender_key(group_cipher *cipher, sender_message_key **sende
     sender_message_key *message_key = 0;
 
     chain_key = sender_key_state_get_chain_key(state);
-    AXOLOTL_REF(chain_key);
+    SIGNAL_REF(chain_key);
 
     if(sender_chain_key_get_iteration(chain_key) > iteration) {
         if(sender_key_state_has_sender_message_key(state, iteration)) {
             result_key = sender_key_state_remove_sender_message_key(state, iteration);
             if(!result_key) {
-                result = AX_ERR_UNKNOWN;
+                result = SG_ERR_UNKNOWN;
             }
             goto complete;
         }
         else {
-            result = AX_ERR_DUPLICATE_MESSAGE;
-            axolotl_log(cipher->global_context, AX_LOG_WARNING,
+            result = SG_ERR_DUPLICATE_MESSAGE;
+            signal_log(cipher->global_context, SG_LOG_WARNING,
                     "Received message with old counter: %d, %d",
                     sender_chain_key_get_iteration(chain_key), iteration);
             goto complete;
@@ -262,8 +269,8 @@ int group_cipher_get_sender_key(group_cipher *cipher, sender_message_key **sende
     }
 
     if(iteration - sender_chain_key_get_iteration(chain_key) > 2000) {
-        result = AX_ERR_INVALID_MESSAGE;
-        axolotl_log(cipher->global_context, AX_LOG_WARNING, "Over 2000 messages into the future!");
+        result = SG_ERR_INVALID_MESSAGE;
+        signal_log(cipher->global_context, SG_LOG_WARNING, "Over 2000 messages into the future!");
         goto complete;
     }
 
@@ -277,14 +284,14 @@ int group_cipher_get_sender_key(group_cipher *cipher, sender_message_key **sende
         if(result < 0) {
             goto complete;
         }
-        AXOLOTL_UNREF(message_key);
+        SIGNAL_UNREF(message_key);
 
         result = sender_chain_key_create_next(chain_key, &next_chain_key);
         if(result < 0) {
             goto complete;
         }
 
-        AXOLOTL_UNREF(chain_key);
+        SIGNAL_UNREF(chain_key);
         chain_key = next_chain_key;
         next_chain_key = 0;
     }
@@ -298,16 +305,16 @@ int group_cipher_get_sender_key(group_cipher *cipher, sender_message_key **sende
     result = sender_chain_key_create_message_key(chain_key, &result_key);
 
 complete:
-    AXOLOTL_UNREF(message_key);
-    AXOLOTL_UNREF(chain_key);
-    AXOLOTL_UNREF(next_chain_key);
+    SIGNAL_UNREF(message_key);
+    SIGNAL_UNREF(chain_key);
+    SIGNAL_UNREF(next_chain_key);
     if(result >= 0) {
         *sender_key = result_key;
     }
     return result;
 }
 
-static int group_cipher_decrypt_callback(group_cipher *cipher, axolotl_buffer *plaintext, void *decrypt_context)
+static int group_cipher_decrypt_callback(group_cipher *cipher, signal_buffer *plaintext, void *decrypt_context)
 {
     int result = 0;
     if(cipher->decrypt_callback) {
diff --git a/libs/libaxolotl/src/group_cipher.h b/libs/libaxolotl/src/group_cipher.h
index f78a574bbe..189910d9da 100644
--- a/libs/libaxolotl/src/group_cipher.h
+++ b/libs/libaxolotl/src/group_cipher.h
@@ -3,14 +3,14 @@
 
 #include <stdint.h>
 #include <stddef.h>
-#include "axolotl_types.h"
+#include "signal_protocol_types.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 /*
- * The main entry point for Axolotl group encrypt/decrypt operations.
+ * The main entry point for Signal Protocol group encrypt/decrypt operations.
  *
  * Once a session has been established with group_session_builder and a
  * sender_key_distribution_message has been distributed to each member of
@@ -27,14 +27,14 @@ extern "C" {
  * When finished, free the returned instance by calling group_cipher_free().
  *
  * @param cipher set to a freshly allocated group cipher instance
- * @param store the axolotl_store_context to store all state information in
+ * @param store the signal_protocol_store_context to store all state information in
  * @param sender_key_id the sender that messages will be encrypted to or decrypted from
  * @param global_context the global library context
  * @return 0 on success, or negative on failure
  */
 int group_cipher_create(group_cipher **cipher,
-        axolotl_store_context *store, const axolotl_sender_key_name *sender_key_id,
-        axolotl_context *global_context);
+        signal_protocol_store_context *store, const signal_protocol_sender_key_name *sender_key_id,
+        signal_context *global_context);
 
 /**
  * Set the optional user data pointer for the group cipher.
@@ -70,7 +70,7 @@ void *group_cipher_get_user_data(group_cipher *cipher);
  * @param user_data user data pointer provided to the callback
  */
 void group_cipher_set_decryption_callback(group_cipher *cipher,
-        int (*callback)(group_cipher *cipher, axolotl_buffer *plaintext, void *decrypt_context));
+        int (*callback)(group_cipher *cipher, signal_buffer *plaintext, void *decrypt_context));
 
 /**
  * Encrypt a message.
@@ -79,7 +79,7 @@ void group_cipher_set_decryption_callback(group_cipher *cipher,
  * @param padded_message_len The length of the data pointed to by padded_message
  * @param encrypted_message Set to a ciphertext message encrypted to the group+sender+device tuple.
  *
- * @return AX_SUCCESS on success, negative on error
+ * @return SG_SUCCESS on success, negative on error
  */
 int group_cipher_encrypt(group_cipher *cipher,
         const uint8_t *padded_plaintext, size_t padded_plaintext_len,
@@ -93,16 +93,16 @@ int group_cipher_encrypt(group_cipher *cipher,
  *   ciphertext, which is passed to the decryption callback function
  * @param plaintext Set to a newly allocated buffer containing the plaintext.
  *
- * @retval AX_SUCCESS Success
- * @retval AX_ERR_INVALID_MESSAGE if the input is not valid ciphertext.
- * @retval AX_ERR_DUPLICATE_MESSAGE if the input is a message that has already been received.
- * @retval AX_ERR_LEGACY_MESSAGE if the input is a message formatted by a protocol version that
+ * @retval SG_SUCCESS Success
+ * @retval SG_ERR_INVALID_MESSAGE if the input is not valid ciphertext.
+ * @retval SG_ERR_DUPLICATE_MESSAGE if the input is a message that has already been received.
+ * @retval SG_ERR_LEGACY_MESSAGE if the input is a message formatted by a protocol version that
  *                               is no longer supported.
- * @retval AX_ERR_NO_SESSION if there is no established session for this contact.
+ * @retval SG_ERR_NO_SESSION if there is no established session for this contact.
  */
 int group_cipher_decrypt(group_cipher *cipher,
         sender_key_message *ciphertext, void *decrypt_context,
-        axolotl_buffer **plaintext);
+        signal_buffer **plaintext);
 
 void group_cipher_free(group_cipher *cipher);
 
diff --git a/libs/libaxolotl/src/group_session_builder.c b/libs/libaxolotl/src/group_session_builder.c
index 4ac825b142..13db334c8e 100644
--- a/libs/libaxolotl/src/group_session_builder.c
+++ b/libs/libaxolotl/src/group_session_builder.c
@@ -2,21 +2,21 @@
 
 #include <assert.h>
 #include <string.h>
-#include "axolotl_internal.h"
 #include "sender_key_record.h"
 #include "sender_key_state.h"
 #include "sender_key.h"
 #include "protocol.h"
 #include "key_helper.h"
+#include "signal_protocol_internal.h"
 
 struct group_session_builder
 {
-    axolotl_store_context *store;
-    axolotl_context *global_context;
+    signal_protocol_store_context *store;
+    signal_context *global_context;
 };
 
 int group_session_builder_create(group_session_builder **builder,
-        axolotl_store_context *store, axolotl_context *global_context)
+        signal_protocol_store_context *store, signal_context *global_context)
 {
     group_session_builder *result = 0;
 
@@ -25,7 +25,7 @@ int group_session_builder_create(group_session_builder **builder,
 
     result = malloc(sizeof(group_session_builder));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
     memset(result, 0, sizeof(group_session_builder));
 
@@ -37,7 +37,7 @@ int group_session_builder_create(group_session_builder **builder,
 }
 
 int group_session_builder_process_session(group_session_builder *builder,
-        const axolotl_sender_key_name *sender_key_name,
+        const signal_protocol_sender_key_name *sender_key_name,
         sender_key_distribution_message *distribution_message)
 {
     int result = 0;
@@ -45,9 +45,9 @@ int group_session_builder_process_session(group_session_builder *builder,
 
     assert(builder);
     assert(builder->store);
-    axolotl_lock(builder->global_context);
+    signal_lock(builder->global_context);
 
-    result = axolotl_sender_key_load_key(builder->store, &record, sender_key_name);
+    result = signal_protocol_sender_key_load_key(builder->store, &record, sender_key_name);
     if(result < 0) {
         goto complete;
     }
@@ -61,48 +61,48 @@ int group_session_builder_process_session(group_session_builder *builder,
         goto complete;
     }
 
-    result = axolotl_sender_key_store_key(builder->store, sender_key_name, record);
+    result = signal_protocol_sender_key_store_key(builder->store, sender_key_name, record);
 
 complete:
-    AXOLOTL_UNREF(record);
-    axolotl_unlock(builder->global_context);
+    SIGNAL_UNREF(record);
+    signal_unlock(builder->global_context);
     return result;
 }
 
 int group_session_builder_create_session(group_session_builder *builder,
         sender_key_distribution_message **distribution_message,
-        const axolotl_sender_key_name *sender_key_name)
+        const signal_protocol_sender_key_name *sender_key_name)
 {
     int result = 0;
     sender_key_record *record = 0;
     sender_key_state *state = 0;
     uint32_t sender_key_id = 0;
-    axolotl_buffer *sender_key = 0;
+    signal_buffer *sender_key = 0;
     ec_key_pair *sender_signing_key = 0;
     sender_chain_key *chain_key = 0;
-    axolotl_buffer *seed = 0;
+    signal_buffer *seed = 0;
 
     assert(builder);
     assert(builder->store);
-    axolotl_lock(builder->global_context);
+    signal_lock(builder->global_context);
 
-    result = axolotl_sender_key_load_key(builder->store, &record, sender_key_name);
+    result = signal_protocol_sender_key_load_key(builder->store, &record, sender_key_name);
     if(result < 0) {
         goto complete;
     }
 
     if(sender_key_record_is_empty(record)) {
-        result = axolotl_key_helper_generate_sender_key_id(&sender_key_id, builder->global_context);
+        result = signal_protocol_key_helper_generate_sender_key_id(&sender_key_id, builder->global_context);
         if(result < 0) {
             goto complete;
         }
 
-        result = axolotl_key_helper_generate_sender_key(&sender_key, builder->global_context);
+        result = signal_protocol_key_helper_generate_sender_key(&sender_key, builder->global_context);
         if(result < 0) {
             goto complete;
         }
 
-        result = axolotl_key_helper_generate_sender_signing_key(&sender_signing_key, builder->global_context);
+        result = signal_protocol_key_helper_generate_sender_signing_key(&sender_signing_key, builder->global_context);
         if(result < 0) {
             goto complete;
         }
@@ -112,7 +112,7 @@ int group_session_builder_create_session(group_session_builder *builder,
             goto complete;
         }
 
-        result = axolotl_sender_key_store_key(builder->store, sender_key_name, record);
+        result = signal_protocol_sender_key_store_key(builder->store, sender_key_name, record);
         if(result < 0) {
             goto complete;
         }
@@ -129,15 +129,15 @@ int group_session_builder_create_session(group_session_builder *builder,
     result = sender_key_distribution_message_create(distribution_message,
             sender_key_state_get_key_id(state),
             sender_chain_key_get_iteration(chain_key),
-            axolotl_buffer_data(seed), axolotl_buffer_len(seed),
+            signal_buffer_data(seed), signal_buffer_len(seed),
             sender_key_state_get_signing_key_public(state),
             builder->global_context);
 
 complete:
-    axolotl_buffer_free(sender_key);
-    AXOLOTL_UNREF(sender_signing_key);
-    AXOLOTL_UNREF(record);
-    axolotl_unlock(builder->global_context);
+    signal_buffer_free(sender_key);
+    SIGNAL_UNREF(sender_signing_key);
+    SIGNAL_UNREF(record);
+    signal_unlock(builder->global_context);
     return result;
 }
 
diff --git a/libs/libaxolotl/src/group_session_builder.h b/libs/libaxolotl/src/group_session_builder.h
index b54807427e..1d87d53a7f 100644
--- a/libs/libaxolotl/src/group_session_builder.h
+++ b/libs/libaxolotl/src/group_session_builder.h
@@ -1,7 +1,7 @@
 #ifndef GROUP_SESSION_BUILDER_H
 #define GROUP_SESSION_BUILDER_H
 
-#include "axolotl_types.h"
+#include "signal_protocol_types.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -30,12 +30,12 @@ extern "C" {
  * When finished, free the returned instance by calling group_session_builder_free().
  *
  * @param builder set to a freshly allocated group session builder instance
- * @param store the axolotl_store_context to store all state information in
+ * @param store the signal_protocol_store_context to store all state information in
  * @param global_context the global library context
  * @return 0 on success, or negative on failure
  */
 int group_session_builder_create(group_session_builder **builder,
-        axolotl_store_context *store, axolotl_context *global_context);
+        signal_protocol_store_context *store, signal_context *global_context);
 
 /**
  * Construct a group session for receiving messages from senderKeyName.
@@ -46,7 +46,7 @@ int group_session_builder_create(group_session_builder **builder,
  * @return 0 on success, or negative on failure
  */
 int group_session_builder_process_session(group_session_builder *builder,
-        const axolotl_sender_key_name *sender_key_name,
+        const signal_protocol_sender_key_name *sender_key_name,
         sender_key_distribution_message *distribution_message);
 
 /**
@@ -59,7 +59,7 @@ int group_session_builder_process_session(group_session_builder *builder,
  */
 int group_session_builder_create_session(group_session_builder *builder,
         sender_key_distribution_message **distribution_message,
-        const axolotl_sender_key_name *sender_key_name);
+        const signal_protocol_sender_key_name *sender_key_name);
 
 void group_session_builder_free(group_session_builder *builder);
 
diff --git a/libs/libaxolotl/src/hkdf.c b/libs/libaxolotl/src/hkdf.c
index 63b35ddaa4..d8df253c8b 100644
--- a/libs/libaxolotl/src/hkdf.c
+++ b/libs/libaxolotl/src/hkdf.c
@@ -6,7 +6,7 @@
 #include <math.h>
 #include <assert.h>
 
-#include "axolotl_internal.h"
+#include "signal_protocol_internal.h"
 
 #define HASH_OUTPUT_SIZE 32
 
@@ -15,22 +15,22 @@
 
 struct hkdf_context
 {
-    axolotl_type_base base;
-    axolotl_context *global_context;
+    signal_type_base base;
+    signal_context *global_context;
     int iteration_start_offset;
 };
 
-int hkdf_create(hkdf_context **context, int message_version, axolotl_context *global_context)
+int hkdf_create(hkdf_context **context, int message_version, signal_context *global_context)
 {
     assert(global_context);
     *context = malloc(sizeof(hkdf_context));
     if(!(*context)) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
     memset(*context, 0, sizeof(hkdf_context));
 
-    AXOLOTL_INIT(*context, hkdf_destroy);
+    SIGNAL_INIT(*context, hkdf_destroy);
     (*context)->global_context = global_context;
 
     if(message_version == 2) {
@@ -41,7 +41,7 @@ int hkdf_create(hkdf_context **context, int message_version, axolotl_context *gl
     }
     else {
         free(*context);
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
 
     return 0;
@@ -53,43 +53,43 @@ ssize_t hkdf_extract(hkdf_context *context,
         const uint8_t *input_key_material, size_t input_key_material_len)
 {
     int result = 0;
-    axolotl_buffer *mac_buffer = 0;
+    signal_buffer *mac_buffer = 0;
     uint8_t *mac = 0;
     size_t mac_len = 0;
     void *hmac_context;
 
     assert(context);
 
-    result = axolotl_hmac_sha256_init(context->global_context,
+    result = signal_hmac_sha256_init(context->global_context,
             &hmac_context, salt, salt_len);
     if(result < 0) {
         goto complete;
     }
 
-    result = axolotl_hmac_sha256_update(context->global_context,
+    result = signal_hmac_sha256_update(context->global_context,
             hmac_context, input_key_material, input_key_material_len);
     if(result < 0) {
         goto complete;
     }
 
-    result = axolotl_hmac_sha256_final(context->global_context,
+    result = signal_hmac_sha256_final(context->global_context,
             hmac_context, &mac_buffer);
     if(result < 0) {
         goto complete;
     }
 
-    mac_len = axolotl_buffer_len(mac_buffer);
+    mac_len = signal_buffer_len(mac_buffer);
     mac = malloc(mac_len);
     if(!mac) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    memcpy(mac, axolotl_buffer_data(mac_buffer), mac_len);
+    memcpy(mac, signal_buffer_data(mac_buffer), mac_len);
 
 complete:
-    axolotl_hmac_sha256_cleanup(context->global_context, hmac_context);
-    axolotl_buffer_free(mac_buffer);
+    signal_hmac_sha256_cleanup(context->global_context, hmac_context);
+    signal_buffer_free(mac_buffer);
 
     if(result >= 0) {
         *output = mac;
@@ -108,7 +108,7 @@ ssize_t hkdf_expand(hkdf_context *context,
 {
     int iterations = (int)ceil((double)output_len / (double)HASH_OUTPUT_SIZE);
     size_t remaining_len = output_len;
-    axolotl_buffer *step_buffer = 0;
+    signal_buffer *step_buffer = 0;
     size_t step_size = 0;
     uint8_t *result_buf = 0;
     size_t result_buf_len = 0;
@@ -119,66 +119,66 @@ ssize_t hkdf_expand(hkdf_context *context,
     assert(context);
 
     for(i = context->iteration_start_offset; i < iterations + context->iteration_start_offset; i++) {
-        result = axolotl_hmac_sha256_init(context->global_context,
+        result = signal_hmac_sha256_init(context->global_context,
                 &hmac_context, prk, prk_len);
         if(result < 0) {
             goto complete;
         }
 
         if(step_buffer) {
-            result = axolotl_hmac_sha256_update(context->global_context,
+            result = signal_hmac_sha256_update(context->global_context,
                     hmac_context,
-                    axolotl_buffer_data(step_buffer),
-                    axolotl_buffer_len(step_buffer));
+                    signal_buffer_data(step_buffer),
+                    signal_buffer_len(step_buffer));
             if(result < 0) {
                 goto complete;
             }
-            axolotl_buffer_free(step_buffer);
+            signal_buffer_free(step_buffer);
             step_buffer = 0;
         }
 
         if(info) {
-            result = axolotl_hmac_sha256_update(context->global_context,
+            result = signal_hmac_sha256_update(context->global_context,
                     hmac_context, info, info_len);
             if(result < 0) {
                 goto complete;
             }
         }
 
-        result = axolotl_hmac_sha256_update(context->global_context,
+        result = signal_hmac_sha256_update(context->global_context,
                 hmac_context, &i, sizeof(uint8_t));
         if(result < 0) {
             goto complete;
         }
 
-        result = axolotl_hmac_sha256_final(context->global_context,
+        result = signal_hmac_sha256_final(context->global_context,
                 hmac_context, &step_buffer);
         if(result < 0) {
             goto complete;
         }
 
-        axolotl_hmac_sha256_cleanup(context->global_context, hmac_context);
+        signal_hmac_sha256_cleanup(context->global_context, hmac_context);
         hmac_context = 0;
 
-        step_size = MIN(remaining_len, axolotl_buffer_len(step_buffer));
+        step_size = MIN(remaining_len, signal_buffer_len(step_buffer));
 
         if(!result_buf) {
             result_buf = malloc(step_size);
             if(!result_buf) {
-                result = AX_ERR_NOMEM;
+                result = SG_ERR_NOMEM;
                 goto complete;
             }
-            memcpy(result_buf, axolotl_buffer_data(step_buffer), step_size);
+            memcpy(result_buf, signal_buffer_data(step_buffer), step_size);
             result_buf_len = step_size;
         }
         else {
             uint8_t *tmp_buf = realloc(result_buf, result_buf_len + step_size);
             if(!tmp_buf) {
-                result = AX_ERR_NOMEM;
+                result = SG_ERR_NOMEM;
                 goto complete;
             }
             result_buf = tmp_buf;
-            memcpy(result_buf + result_buf_len, axolotl_buffer_data(step_buffer), step_size);
+            memcpy(result_buf + result_buf_len, signal_buffer_data(step_buffer), step_size);
             result_buf_len += step_size;
         }
         remaining_len -= step_size;
@@ -186,9 +186,9 @@ ssize_t hkdf_expand(hkdf_context *context,
 
 complete:
     if(hmac_context) {
-        axolotl_hmac_sha256_cleanup(context->global_context, hmac_context);
+        signal_hmac_sha256_cleanup(context->global_context, hmac_context);
     }
-    axolotl_buffer_free(step_buffer);
+    signal_buffer_free(step_buffer);
     if(result < 0) {
         free(result_buf);
         return result;
@@ -214,7 +214,7 @@ ssize_t hkdf_derive_secrets(hkdf_context *context,
 
     prk_len = hkdf_extract(context, &prk, salt, salt_len, input_key_material, input_key_material_len);
     if(prk_len < 0) {
-        axolotl_log(context->global_context, AX_LOG_ERROR, "hkdf_extract error: %d", prk_len);
+        signal_log(context->global_context, SG_LOG_ERROR, "hkdf_extract error: %d", prk_len);
         return prk_len;
     }
 
@@ -249,7 +249,7 @@ int hkdf_compare(const hkdf_context *context1, const hkdf_context *context2)
     }
 }
 
-void hkdf_destroy(axolotl_type_base *type)
+void hkdf_destroy(signal_type_base *type)
 {
     hkdf_context *context = (hkdf_context *)type;
     free(context);
diff --git a/libs/libaxolotl/src/hkdf.h b/libs/libaxolotl/src/hkdf.h
index 8e939485c3..43ee870401 100644
--- a/libs/libaxolotl/src/hkdf.h
+++ b/libs/libaxolotl/src/hkdf.h
@@ -3,13 +3,13 @@
 
 #include <stdint.h>
 #include <stddef.h>
-#include "axolotl_types.h"
+#include "signal_protocol_types.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-int hkdf_create(hkdf_context **context, int message_version, axolotl_context *global_context);
+int hkdf_create(hkdf_context **context, int message_version, signal_context *global_context);
 
 ssize_t hkdf_derive_secrets(hkdf_context *context,
         uint8_t **output,
@@ -20,7 +20,7 @@ ssize_t hkdf_derive_secrets(hkdf_context *context,
 
 int hkdf_compare(const hkdf_context *context1, const hkdf_context *context2);
 
-void hkdf_destroy(axolotl_type_base *type);
+void hkdf_destroy(signal_type_base *type);
 
 #ifdef __cplusplus
 }
diff --git a/libs/libaxolotl/src/key_helper.c b/libs/libaxolotl/src/key_helper.c
index a1403a517f..80deb6ab08 100644
--- a/libs/libaxolotl/src/key_helper.c
+++ b/libs/libaxolotl/src/key_helper.c
@@ -2,19 +2,19 @@
 
 #include <assert.h>
 
-#include "axolotl_internal.h"
 #include "session_pre_key.h"
 #include "ratchet.h"
 #include "curve.h"
+#include "signal_protocol_internal.h"
 #include "utlist.h"
 
-struct axolotl_key_helper_pre_key_list_node
+struct signal_protocol_key_helper_pre_key_list_node
 {
     session_pre_key *element;
-    struct axolotl_key_helper_pre_key_list_node *next;
+    struct signal_protocol_key_helper_pre_key_list_node *next;
 };
 
-int axolotl_key_helper_generate_identity_key_pair(ratchet_identity_key_pair **key_pair, axolotl_context *global_context)
+int signal_protocol_key_helper_generate_identity_key_pair(ratchet_identity_key_pair **key_pair, signal_context *global_context)
 {
     int result = 0;
     ratchet_identity_key_pair *result_pair = 0;
@@ -39,11 +39,11 @@ complete:
     if(result >= 0) {
         *key_pair = result_pair;
     }
-    AXOLOTL_UNREF(ec_pair);
+    SIGNAL_UNREF(ec_pair);
     return result;
 }
 
-int axolotl_key_helper_generate_registration_id(uint32_t *registration_id, int extended_range, axolotl_context *global_context)
+int signal_protocol_key_helper_generate_registration_id(uint32_t *registration_id, int extended_range, signal_context *global_context)
 {
     uint32_t range;
     uint32_t id_value;
@@ -59,7 +59,7 @@ int axolotl_key_helper_generate_registration_id(uint32_t *registration_id, int e
         range = INT32_MAX - 1;
     }
     else {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
 
     result = global_context->crypto_provider.random_func(
@@ -76,7 +76,7 @@ int axolotl_key_helper_generate_registration_id(uint32_t *registration_id, int e
     return 0;
 }
 
-int axolotl_key_helper_get_random_sequence(int *value, int max, axolotl_context *global_context)
+int signal_protocol_key_helper_get_random_sequence(int *value, int max, signal_context *global_context)
 {
     int result = 0;
     int32_t result_value;
@@ -98,16 +98,16 @@ int axolotl_key_helper_get_random_sequence(int *value, int max, axolotl_context
     return 0;
 }
 
-int axolotl_key_helper_generate_pre_keys(axolotl_key_helper_pre_key_list_node **head,
+int signal_protocol_key_helper_generate_pre_keys(signal_protocol_key_helper_pre_key_list_node **head,
         unsigned int start, unsigned int count,
-        axolotl_context *global_context)
+        signal_context *global_context)
 {
     int result = 0;
     ec_key_pair *ec_pair = 0;
     session_pre_key *pre_key = 0;
-    axolotl_key_helper_pre_key_list_node *result_head = 0;
-    axolotl_key_helper_pre_key_list_node *cur_node = 0;
-    axolotl_key_helper_pre_key_list_node *node = 0;
+    signal_protocol_key_helper_pre_key_list_node *result_head = 0;
+    signal_protocol_key_helper_pre_key_list_node *cur_node = 0;
+    signal_protocol_key_helper_pre_key_list_node *node = 0;
     unsigned int start_index = start - 1;
     unsigned int i;
 
@@ -127,12 +127,12 @@ int axolotl_key_helper_generate_pre_keys(axolotl_key_helper_pre_key_list_node **
             goto complete;
         }
 
-        AXOLOTL_UNREF(ec_pair);
+        SIGNAL_UNREF(ec_pair);
         ec_pair = 0;
 
-        node = malloc(sizeof(axolotl_key_helper_pre_key_list_node));
+        node = malloc(sizeof(signal_protocol_key_helper_pre_key_list_node));
         if(!node) {
-            result = AX_ERR_NOMEM;
+            result = SG_ERR_NOMEM;
             goto complete;
         }
         node->element = pre_key;
@@ -151,20 +151,20 @@ int axolotl_key_helper_generate_pre_keys(axolotl_key_helper_pre_key_list_node **
 
 complete:
     if(ec_pair) {
-        AXOLOTL_UNREF(ec_pair);
+        SIGNAL_UNREF(ec_pair);
     }
     if(pre_key) {
-        AXOLOTL_UNREF(pre_key);
+        SIGNAL_UNREF(pre_key);
     }
     if(node) {
         free(node);
     }
     if(result < 0) {
         if(result_head) {
-            axolotl_key_helper_pre_key_list_node *tmp_node;
+            signal_protocol_key_helper_pre_key_list_node *tmp_node;
             LL_FOREACH_SAFE(result_head, cur_node, tmp_node) {
                 LL_DELETE(result_head, cur_node);
-                AXOLOTL_UNREF(cur_node->element);
+                SIGNAL_UNREF(cur_node->element);
                 free(cur_node);
             }
         }
@@ -175,33 +175,33 @@ complete:
     return result;
 }
 
-session_pre_key *axolotl_key_helper_key_list_element(const axolotl_key_helper_pre_key_list_node *node)
+session_pre_key *signal_protocol_key_helper_key_list_element(const signal_protocol_key_helper_pre_key_list_node *node)
 {
     assert(node);
     assert(node->element);
     return node->element;
 }
 
-axolotl_key_helper_pre_key_list_node *axolotl_key_helper_key_list_next(const axolotl_key_helper_pre_key_list_node *node)
+signal_protocol_key_helper_pre_key_list_node *signal_protocol_key_helper_key_list_next(const signal_protocol_key_helper_pre_key_list_node *node)
 {
     assert(node);
     return node->next;
 }
 
-void axolotl_key_helper_key_list_free(axolotl_key_helper_pre_key_list_node *head)
+void signal_protocol_key_helper_key_list_free(signal_protocol_key_helper_pre_key_list_node *head)
 {
     if(head) {
-        axolotl_key_helper_pre_key_list_node *cur_node;
-        axolotl_key_helper_pre_key_list_node *tmp_node;
+        signal_protocol_key_helper_pre_key_list_node *cur_node;
+        signal_protocol_key_helper_pre_key_list_node *tmp_node;
         LL_FOREACH_SAFE(head, cur_node, tmp_node) {
             LL_DELETE(head, cur_node);
-            AXOLOTL_UNREF(cur_node->element);
+            SIGNAL_UNREF(cur_node->element);
             free(cur_node);
         }
     }
 }
 
-int axolotl_key_helper_generate_last_resort_pre_key(session_pre_key **pre_key, axolotl_context *global_context)
+int signal_protocol_key_helper_generate_last_resort_pre_key(session_pre_key **pre_key, signal_context *global_context)
 {
     int result = 0;
     session_pre_key *result_pre_key = 0;
@@ -217,24 +217,24 @@ int axolotl_key_helper_generate_last_resort_pre_key(session_pre_key **pre_key, a
     result = session_pre_key_create(&result_pre_key, PRE_KEY_MEDIUM_MAX_VALUE, ec_pair);
 
 complete:
-    AXOLOTL_UNREF(ec_pair);
+    SIGNAL_UNREF(ec_pair);
     if(result >= 0) {
         *pre_key = result_pre_key;
     }
     return result;
 }
 
-int axolotl_key_helper_generate_signed_pre_key(session_signed_pre_key **signed_pre_key,
+int signal_protocol_key_helper_generate_signed_pre_key(session_signed_pre_key **signed_pre_key,
         const ratchet_identity_key_pair *identity_key_pair,
         uint32_t signed_pre_key_id,
         uint64_t timestamp,
-        axolotl_context *global_context)
+        signal_context *global_context)
 {
     int result = 0;
     session_signed_pre_key *result_signed_pre_key = 0;
     ec_key_pair *ec_pair = 0;
-    axolotl_buffer *public_buf = 0;
-    axolotl_buffer *signature_buf = 0;
+    signal_buffer *public_buf = 0;
+    signal_buffer *signature_buf = 0;
     ec_public_key *public_key = 0;
     ec_private_key *private_key = 0;
 
@@ -256,28 +256,28 @@ int axolotl_key_helper_generate_signed_pre_key(session_signed_pre_key **signed_p
     result = curve_calculate_signature(global_context,
             &signature_buf,
             private_key,
-            axolotl_buffer_data(public_buf),
-            axolotl_buffer_len(public_buf));
+            signal_buffer_data(public_buf),
+            signal_buffer_len(public_buf));
     if(result < 0) {
         goto complete;
     }
 
     result = session_signed_pre_key_create(&result_signed_pre_key,
             signed_pre_key_id, timestamp, ec_pair,
-            axolotl_buffer_data(signature_buf),
-            axolotl_buffer_len(signature_buf));
+            signal_buffer_data(signature_buf),
+            signal_buffer_len(signature_buf));
 
 complete:
-    AXOLOTL_UNREF(ec_pair);
-    axolotl_buffer_free(public_buf);
-    axolotl_buffer_free(signature_buf);
+    SIGNAL_UNREF(ec_pair);
+    signal_buffer_free(public_buf);
+    signal_buffer_free(signature_buf);
     if(result >= 0) {
         *signed_pre_key = result_signed_pre_key;
     }
     return result;
 }
 
-int axolotl_key_helper_generate_sender_signing_key(ec_key_pair **key_pair, axolotl_context *global_context)
+int signal_protocol_key_helper_generate_sender_signing_key(ec_key_pair **key_pair, signal_context *global_context)
 {
     int result;
 
@@ -288,26 +288,26 @@ int axolotl_key_helper_generate_sender_signing_key(ec_key_pair **key_pair, axolo
     return result;
 }
 
-int axolotl_key_helper_generate_sender_key(axolotl_buffer **key_buffer, axolotl_context *global_context)
+int signal_protocol_key_helper_generate_sender_key(signal_buffer **key_buffer, signal_context *global_context)
 {
     int result = 0;
-    axolotl_buffer *result_buffer = 0;
+    signal_buffer *result_buffer = 0;
 
     assert(global_context);
 
-    result_buffer = axolotl_buffer_alloc(32);
+    result_buffer = signal_buffer_alloc(32);
     if(!result_buffer) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    result = axolotl_crypto_random(global_context,
-            axolotl_buffer_data(result_buffer),
-            axolotl_buffer_len(result_buffer));
+    result = signal_crypto_random(global_context,
+            signal_buffer_data(result_buffer),
+            signal_buffer_len(result_buffer));
 
 complete:
     if(result < 0) {
-        axolotl_buffer_free(result_buffer);
+        signal_buffer_free(result_buffer);
     }
     else {
         *key_buffer = result_buffer;
@@ -316,12 +316,12 @@ complete:
     return result;
 }
 
-int axolotl_key_helper_generate_sender_key_id(uint32_t *key_id, axolotl_context *global_context)
+int signal_protocol_key_helper_generate_sender_key_id(uint32_t *key_id, signal_context *global_context)
 {
     int result;
     int value;
 
-    result = axolotl_key_helper_get_random_sequence(&value, INT32_MAX, global_context);
+    result = signal_protocol_key_helper_get_random_sequence(&value, INT32_MAX, global_context);
 
     if(result >= 0) {
         *key_id = (uint32_t)value;
diff --git a/libs/libaxolotl/src/key_helper.h b/libs/libaxolotl/src/key_helper.h
index 1a7175b620..be3ef8429f 100644
--- a/libs/libaxolotl/src/key_helper.h
+++ b/libs/libaxolotl/src/key_helper.h
@@ -2,7 +2,7 @@
 #define KEY_HELPER_H
 
 #include <stdint.h>
-#include "axolotl_types.h"
+#include "signal_protocol_types.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -15,7 +15,7 @@ extern "C" {
 * @param key_pair the generated identity key pair
 * @return 0 on success, or negative on failure
 */
-int axolotl_key_helper_generate_identity_key_pair(ratchet_identity_key_pair **key_pair, axolotl_context *global_context);
+int signal_protocol_key_helper_generate_identity_key_pair(ratchet_identity_key_pair **key_pair, signal_context *global_context);
 
 /**
  * Generate a registration ID.  Clients should only do this once,
@@ -29,7 +29,7 @@ int axolotl_key_helper_generate_identity_key_pair(ratchet_identity_key_pair **ke
  *                      higher encoding overhead.
  * @return 0 on success, or negative on failure
  */
-int axolotl_key_helper_generate_registration_id(uint32_t *registration_id, int extended_range, axolotl_context *global_context);
+int signal_protocol_key_helper_generate_registration_id(uint32_t *registration_id, int extended_range, signal_context *global_context);
 
 /**
  * Generate a random number bounded by the provided maximum
@@ -38,7 +38,7 @@ int axolotl_key_helper_generate_registration_id(uint32_t *registration_id, int e
  * @param max the maximum value of the random number
  * @return 0 on success, or negative on failure
  */
-int axolotl_key_helper_get_random_sequence(int *value, int max, axolotl_context *global_context);
+int signal_protocol_key_helper_get_random_sequence(int *value, int max, signal_context *global_context);
 
 /**
  * Generate a list of PreKeys.  Clients should do this at install time, and
@@ -49,16 +49,16 @@ int axolotl_key_helper_get_random_sequence(int *value, int max, axolotl_context
  * as possible.
  *
  * When finished with this list, the caller should free it by calling
- * axolotl_key_helper_key_list_free().
+ * signal_protocol_key_helper_key_list_free().
  *
  * @param head pointer to the head of the key list
  * @param start the starting pre key ID, inclusive.
  * @param count the number of pre keys to generate.
  * @return 0 on success, or negative on failure
  */
-int axolotl_key_helper_generate_pre_keys(axolotl_key_helper_pre_key_list_node **head,
+int signal_protocol_key_helper_generate_pre_keys(signal_protocol_key_helper_pre_key_list_node **head,
         unsigned int start, unsigned int count,
-        axolotl_context *global_context);
+        signal_context *global_context);
 
 /**
  * Get the pre key element for the current node in the key list.
@@ -66,22 +66,22 @@ int axolotl_key_helper_generate_pre_keys(axolotl_key_helper_pre_key_list_node **
  * @param current list node
  * @return pre key element
  */
-session_pre_key *axolotl_key_helper_key_list_element(const axolotl_key_helper_pre_key_list_node *node);
+session_pre_key *signal_protocol_key_helper_key_list_element(const signal_protocol_key_helper_pre_key_list_node *node);
 
 /**
- * Get the next element in the ket list.
+ * Get the next element in the key list.
  *
  * @param current list node
  * @return next list node, or 0 if at the end of the list
  */
-axolotl_key_helper_pre_key_list_node *axolotl_key_helper_key_list_next(const axolotl_key_helper_pre_key_list_node *node);
+signal_protocol_key_helper_pre_key_list_node *signal_protocol_key_helper_key_list_next(const signal_protocol_key_helper_pre_key_list_node *node);
 
 /**
  * Free the key list.
  *
  * @param head pointer to the head of the list to free
  */
-void axolotl_key_helper_key_list_free(axolotl_key_helper_pre_key_list_node *head);
+void signal_protocol_key_helper_key_list_free(signal_protocol_key_helper_pre_key_list_node *head);
 
 /**
  * Generate the last resort pre key.  Clients should do this only once, at
@@ -90,7 +90,7 @@ void axolotl_key_helper_key_list_free(axolotl_key_helper_pre_key_list_node *head
  * @param pre_key set to the generated pre key
  * @return 0 on success, or negative on failure
  */
-int axolotl_key_helper_generate_last_resort_pre_key(session_pre_key **pre_key, axolotl_context *global_context);
+int signal_protocol_key_helper_generate_last_resort_pre_key(session_pre_key **pre_key, signal_context *global_context);
 
 /**
  * Generate a signed pre key
@@ -102,11 +102,11 @@ int axolotl_key_helper_generate_last_resort_pre_key(session_pre_key **pre_key, a
  *
  * @return 0 on success, or negative on failure
  */
-int axolotl_key_helper_generate_signed_pre_key(session_signed_pre_key **signed_pre_key,
+int signal_protocol_key_helper_generate_signed_pre_key(session_signed_pre_key **signed_pre_key,
         const ratchet_identity_key_pair *identity_key_pair,
         uint32_t signed_pre_key_id,
         uint64_t timestamp,
-        axolotl_context *global_context);
+        signal_context *global_context);
 
 /*
  * Generate a sender signing key pair
@@ -114,7 +114,7 @@ int axolotl_key_helper_generate_signed_pre_key(session_signed_pre_key **signed_p
 * @param key_pair the generated key pair
 * @return 0 on success, or negative on failure
  */
-int axolotl_key_helper_generate_sender_signing_key(ec_key_pair **key_pair, axolotl_context *global_context);
+int signal_protocol_key_helper_generate_sender_signing_key(ec_key_pair **key_pair, signal_context *global_context);
 
 /*
  * Generate a sender key
@@ -122,7 +122,7 @@ int axolotl_key_helper_generate_sender_signing_key(ec_key_pair **key_pair, axolo
  * @param key_buffer buffer to be allocated and populated with the result
  * @return 0 on success, or negative on failure
  */
-int axolotl_key_helper_generate_sender_key(axolotl_buffer **key_buffer, axolotl_context *global_context);
+int signal_protocol_key_helper_generate_sender_key(signal_buffer **key_buffer, signal_context *global_context);
 
 /*
  * Generate a sender key ID
@@ -130,7 +130,7 @@ int axolotl_key_helper_generate_sender_key(axolotl_buffer **key_buffer, axolotl_
  * @param key_id assigned to the generated ID
  * @return 0 on success, or negative on failure
  */
-int axolotl_key_helper_generate_sender_key_id(uint32_t *key_id, axolotl_context *global_context);
+int signal_protocol_key_helper_generate_sender_key_id(uint32_t *key_id, signal_context *global_context);
 
 #ifdef __cplusplus
 }
diff --git a/libs/libaxolotl/src/protobuf-c/CMakeLists.txt b/libs/libaxolotl/src/protobuf-c/CMakeLists.txt
index 63f18db8ae..1af25df194 100644
--- a/libs/libaxolotl/src/protobuf-c/CMakeLists.txt
+++ b/libs/libaxolotl/src/protobuf-c/CMakeLists.txt
@@ -3,7 +3,10 @@ IF(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
 ENDIF(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
 
 IF(CMAKE_COMPILER_IS_GNUCC)
-	SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-sign-compare -Wno-sign-conversion")
+	SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-sign-compare")
+	IF(GCC_WARN_SIGN_CONVERSION)
+		SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-sign-conversion")
+	ENDIF(GCC_WARN_SIGN_CONVERSION)
 ENDIF(CMAKE_COMPILER_IS_GNUCC)
 
 IF(CMAKE_C_COMPILER_ID MATCHES "Clang")
@@ -15,3 +18,8 @@ set(protobuf_SRCS
 )
 
 add_library(protobuf-c OBJECT ${protobuf_SRCS})
+
+# Add -fPIC flag
+if(BUILD_SHARED_LIBS)
+	set_property(TARGET protobuf-c PROPERTY POSITION_INDEPENDENT_CODE ON)
+endif()
diff --git a/libs/libaxolotl/src/protobuf-c/protobuf-c.c b/libs/libaxolotl/src/protobuf-c/protobuf-c.c
index 4c1438b44a..4f2f5bcc73 100644
--- a/libs/libaxolotl/src/protobuf-c/protobuf-c.c
+++ b/libs/libaxolotl/src/protobuf-c/protobuf-c.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008-2014, Dave Benson and the protobuf-c authors.
+ * Copyright (c) 2008-2015, Dave Benson and the protobuf-c authors.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -50,15 +50,16 @@
 
 #include "protobuf-c.h"
 
-#if defined(_MSC_VER) && !defined(__cplusplus)
-#define inline __inline
-#endif
-
 #define TRUE				1
 #define FALSE				0
 
 #define PROTOBUF_C__ASSERT_NOT_REACHED() assert(0)
 
+/* Workaround for Microsoft compilers. */
+#ifdef _MSC_VER
+# define inline __inline
+#endif
+
 /**
  * \defgroup internal Internal functions and macros
  *
@@ -460,6 +461,39 @@ required_field_get_packed_size(const ProtobufCFieldDescriptor *field,
 }
 
 /**
+ * Calculate the serialized size of a single oneof message field, including
+ * the space needed by the preceding tag. Returns 0 if the oneof field isn't
+ * selected or is not set.
+ *
+ * \param field
+ *      Field descriptor for member.
+ * \param oneof_case
+ *      A pointer to the case enum that selects the field in the oneof.
+ * \param member
+ *      Field to encode.
+ * \return
+ *      Number of bytes required.
+ */
+static size_t
+oneof_field_get_packed_size(const ProtobufCFieldDescriptor *field,
+			    const uint32_t *oneof_case,
+			    const void *member)
+{
+	if (*oneof_case == field->id) {
+		if (field->type == PROTOBUF_C_TYPE_MESSAGE ||
+		    field->type == PROTOBUF_C_TYPE_STRING)
+		{
+			const void *ptr = *(const void * const *) member;
+			if (ptr == NULL || ptr == field->default_value)
+				return 0;
+		}
+	} else {
+		return 0;
+	}
+	return required_field_get_packed_size(field, member);
+}
+
+/**
  * Calculate the serialized size of a single optional message field, including
  * the space needed by the preceding tag. Returns 0 if the optional field isn't
  * set.
@@ -620,7 +654,10 @@ size_t protobuf_c_message_get_packed_size(const ProtobufCMessage *message)
 		if (field->label == PROTOBUF_C_LABEL_REQUIRED) {
 			rv += required_field_get_packed_size(field, member);
 		} else if (field->label == PROTOBUF_C_LABEL_OPTIONAL) {
-			rv += optional_field_get_packed_size(field, qmember, member);
+			if (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_ONEOF))
+				rv += oneof_field_get_packed_size(field, qmember, member);
+			else
+				rv += optional_field_get_packed_size(field, qmember, member);
 		} else {
 			rv += repeated_field_get_packed_size(
 				field,
@@ -1018,6 +1055,40 @@ required_field_pack(const ProtobufCFieldDescriptor *field,
 }
 
 /**
+ * Pack a oneof field and return the number of bytes written. Only packs the
+ * field that is selected by the case enum.
+ *
+ * \param field
+ *      Field descriptor.
+ * \param oneof_case
+ *      A pointer to the case enum that selects the field in the oneof.
+ * \param member
+ *      The field member.
+ * \param[out] out
+ *      Packed value.
+ * \return
+ *      Number of bytes written to `out`.
+ */
+static size_t
+oneof_field_pack(const ProtobufCFieldDescriptor *field,
+		 const uint32_t *oneof_case,
+		 const void *member, uint8_t *out)
+{
+	if (*oneof_case == field->id) {
+		if (field->type == PROTOBUF_C_TYPE_MESSAGE ||
+		    field->type == PROTOBUF_C_TYPE_STRING)
+		{
+			const void *ptr = *(const void * const *) member;
+			if (ptr == NULL || ptr == field->default_value)
+				return 0;
+		}
+	} else {
+		return 0;
+	}
+	return required_field_pack(field, member, out);
+}
+
+/**
  * Pack an optional field and return the number of bytes written.
  *
  * \param field
@@ -1311,6 +1382,7 @@ protobuf_c_message_pack(const ProtobufCMessage *message, uint8_t *out)
 		 * quantifier field of the structure), but the pointer is only
 		 * valid if the field is:
 		 *  - a repeated field, or
+		 *  - a field that is part of a oneof
 		 *  - an optional field that isn't a pointer type
 		 * (Meaning: not a message or a string).
 		 */
@@ -1320,11 +1392,10 @@ protobuf_c_message_pack(const ProtobufCMessage *message, uint8_t *out)
 		if (field->label == PROTOBUF_C_LABEL_REQUIRED) {
 			rv += required_field_pack(field, member, out + rv);
 		} else if (field->label == PROTOBUF_C_LABEL_OPTIONAL) {
-			/*
-			 * Note that qmember is bogus for strings and messages,
-			 * but it isn't used.
-			 */
-			rv += optional_field_pack(field, qmember, member, out + rv);
+			if (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_ONEOF))
+				rv += oneof_field_pack (field, qmember, member, out + rv);
+			else
+				rv += optional_field_pack(field, qmember, member, out + rv);
 		} else {
 			rv += repeated_field_pack(field, *(const size_t *) qmember,
 				member, out + rv);
@@ -1459,6 +1530,39 @@ required_field_pack_to_buffer(const ProtobufCFieldDescriptor *field,
 }
 
 /**
+ * Pack a oneof field to a buffer. Only packs the field that is selected by the case enum.
+ *
+ * \param field
+ *      Field descriptor.
+ * \param oneof_case
+ *      A pointer to the case enum that selects the field in the oneof.
+ * \param member
+ *      The element to be packed.
+ * \param[out] buffer
+ *      Virtual buffer to append data to.
+ * \return
+ *      Number of bytes serialised to `buffer`.
+ */
+static size_t
+oneof_field_pack_to_buffer(const ProtobufCFieldDescriptor *field,
+			   const uint32_t *oneof_case,
+			   const void *member, ProtobufCBuffer *buffer)
+{
+	if (*oneof_case == field->id) {
+		if (field->type == PROTOBUF_C_TYPE_MESSAGE ||
+		    field->type == PROTOBUF_C_TYPE_STRING)
+		{
+			const void *ptr = *(const void *const *) member;
+			if (ptr == NULL || ptr == field->default_value)
+				return 0;
+		}
+	} else {
+		return 0;
+	}
+	return required_field_pack_to_buffer(field, member, buffer);
+}
+
+/**
  * Pack an optional field to a buffer.
  *
  * \param field
@@ -1734,12 +1838,21 @@ protobuf_c_message_pack_to_buffer(const ProtobufCMessage *message,
 		if (field->label == PROTOBUF_C_LABEL_REQUIRED) {
 			rv += required_field_pack_to_buffer(field, member, buffer);
 		} else if (field->label == PROTOBUF_C_LABEL_OPTIONAL) {
-			rv += optional_field_pack_to_buffer(
-				field,
-				qmember,
-				member,
-				buffer
-			);
+			if (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_ONEOF)) {
+				rv += oneof_field_pack_to_buffer(
+					field,
+					qmember,
+					member,
+					buffer
+					);
+			} else {
+				rv += optional_field_pack_to_buffer(
+					field,
+					qmember,
+					member,
+					buffer
+					);
+			}
 		} else {
 			rv += repeated_field_pack_to_buffer(
 				field,
@@ -1909,7 +2022,7 @@ merge_messages(ProtobufCMessage *earlier_msg,
 {
 	unsigned i;
 	const ProtobufCFieldDescriptor *fields =
-		earlier_msg->descriptor->fields;
+		latter_msg->descriptor->fields;
 	for (i = 0; i < latter_msg->descriptor->n_fields; i++) {
 		if (fields[i].label == PROTOBUF_C_LABEL_REPEATED) {
 			size_t *n_earlier =
@@ -1957,38 +2070,65 @@ merge_messages(ProtobufCMessage *earlier_msg,
 				*n_earlier = 0;
 				*p_earlier = 0;
 			}
-		} else if (fields[i].type == PROTOBUF_C_TYPE_MESSAGE) {
-			ProtobufCMessage **em =
-				STRUCT_MEMBER_PTR(ProtobufCMessage *,
-						  earlier_msg,
-						  fields[i].offset);
-			ProtobufCMessage **lm =
-				STRUCT_MEMBER_PTR(ProtobufCMessage *,
-						  latter_msg,
-						  fields[i].offset);
-			if (*em != NULL) {
-				if (*lm != NULL) {
-					if (!merge_messages
-					    (*em, *lm, allocator))
-						return FALSE;
+		} else if (fields[i].label == PROTOBUF_C_LABEL_OPTIONAL) {
+			const ProtobufCFieldDescriptor *field;
+			uint32_t *earlier_case_p = STRUCT_MEMBER_PTR(uint32_t,
+								     earlier_msg,
+								     fields[i].
+								     quantifier_offset);
+			uint32_t *latter_case_p = STRUCT_MEMBER_PTR(uint32_t,
+								    latter_msg,
+								    fields[i].
+								    quantifier_offset);
+			protobuf_c_boolean need_to_merge = FALSE;
+			void *earlier_elem;
+			void *latter_elem;
+			const void *def_val;
+
+			if (fields[i].flags & PROTOBUF_C_FIELD_FLAG_ONEOF) {
+				if (*latter_case_p == 0) {
+					/* lookup correct oneof field */
+					int field_index =
+						int_range_lookup(
+							latter_msg->descriptor
+							->n_field_ranges,
+							latter_msg->descriptor
+							->field_ranges,
+							*earlier_case_p);
+					field = latter_msg->descriptor->fields +
+						field_index;
 				} else {
-					/* Zero copy the optional message */
-					assert(fields[i].label ==
-					       PROTOBUF_C_LABEL_OPTIONAL);
-					*lm = *em;
-					*em = NULL;
+					/* Oneof is present in the latter message, move on */
+					continue;
 				}
+			} else {
+				field = &fields[i];
 			}
-		} else if (fields[i].label == PROTOBUF_C_LABEL_OPTIONAL) {
-			size_t el_size = 0;
-			protobuf_c_boolean need_to_merge = FALSE;
-			void *earlier_elem =
-				STRUCT_MEMBER_P(earlier_msg, fields[i].offset);
-			void *latter_elem =
-				STRUCT_MEMBER_P(latter_msg, fields[i].offset);
-			const void *def_val = fields[i].default_value;
 
-			switch (fields[i].type) {
+
+			earlier_elem =
+				STRUCT_MEMBER_P(earlier_msg, field->offset);
+			latter_elem =
+				STRUCT_MEMBER_P(latter_msg, field->offset);
+			def_val = field->default_value;
+
+			switch (field->type) {
+			case PROTOBUF_C_TYPE_MESSAGE: {
+				ProtobufCMessage *em = *(ProtobufCMessage **) earlier_elem;
+				ProtobufCMessage *lm = *(ProtobufCMessage **) latter_elem;
+				if (em != NULL) {
+					if (lm != NULL) {
+						if (!merge_messages(em, lm, allocator))
+							return FALSE;
+						/* Already merged */
+						need_to_merge = FALSE;
+					} else {
+						/* Zero copy the message */
+						need_to_merge = TRUE;
+					}
+				}
+				break;
+			}
 			case PROTOBUF_C_TYPE_BYTES: {
 				uint8_t *e_data =
 					((ProtobufCBinaryData *) earlier_elem)->data;
@@ -1996,11 +2136,10 @@ merge_messages(ProtobufCMessage *earlier_msg,
 					((ProtobufCBinaryData *) latter_elem)->data;
 				const ProtobufCBinaryData *d_bd =
 					(ProtobufCBinaryData *) def_val;
-				el_size = sizeof(ProtobufCBinaryData);
 
 				need_to_merge =
 					(e_data != NULL &&
-					 (d_bd != NULL &&
+					 (d_bd == NULL ||
 					  e_data != d_bd->data)) &&
 					(l_data == NULL ||
 					 (d_bd != NULL &&
@@ -2011,26 +2150,23 @@ merge_messages(ProtobufCMessage *earlier_msg,
 				char *e_str = *(char **) earlier_elem;
 				char *l_str = *(char **) latter_elem;
 				const char *d_str = def_val;
-				el_size = sizeof(char *);
 
 				need_to_merge = e_str != d_str && l_str == d_str;
 				break;
 			}
 			default: {
-				el_size = sizeof_elt_in_repeated_array(fields[i].type);
-
-				need_to_merge =
-					STRUCT_MEMBER(protobuf_c_boolean,
-						      earlier_msg,
-						      fields[i].quantifier_offset) &&
-					!STRUCT_MEMBER(protobuf_c_boolean,
-						       latter_msg,
-						       fields[i].quantifier_offset);
+				/* Could be has field or case enum, the logic is
+				 * equivalent, since 0 (FALSE) means not set for
+				 * oneof */
+				need_to_merge = (*earlier_case_p != 0) &&
+						(*latter_case_p == 0);
 				break;
 			}
 			}
 
 			if (need_to_merge) {
+				size_t el_size =
+					sizeof_elt_in_repeated_array(field->type);
 				memcpy(latter_elem, earlier_elem, el_size);
 				/*
 				 * Reset the element from the old message to 0
@@ -2041,16 +2177,11 @@ merge_messages(ProtobufCMessage *earlier_msg,
 				 */
 				memset(earlier_elem, 0, el_size);
 
-				if (fields[i].quantifier_offset != 0) {
-					/* Set the has field, if applicable */
-					STRUCT_MEMBER(protobuf_c_boolean,
-						      latter_msg,
-						      fields[i].
-						      quantifier_offset) = TRUE;
-					STRUCT_MEMBER(protobuf_c_boolean,
-						      earlier_msg,
-						      fields[i].
-						      quantifier_offset) = FALSE;
+				if (field->quantifier_offset != 0) {
+					/* Set the has field or the case enum,
+					 * if applicable */
+					*latter_case_p = *earlier_case_p;
+					*earlier_case_p = 0;
 				}
 			}
 		}
@@ -2349,6 +2480,66 @@ parse_required_member(ScannedMember *scanned_member,
 }
 
 static protobuf_c_boolean
+parse_oneof_member (ScannedMember *scanned_member,
+		    void *member,
+		    ProtobufCMessage *message,
+		    ProtobufCAllocator *allocator)
+{
+	uint32_t *oneof_case = STRUCT_MEMBER_PTR(uint32_t, message,
+					       scanned_member->field->quantifier_offset);
+
+	/* If we have already parsed a member of this oneof, free it. */
+	if (*oneof_case != 0) {
+		/* lookup field */
+		int field_index =
+			int_range_lookup(message->descriptor->n_field_ranges,
+					 message->descriptor->field_ranges,
+					 *oneof_case);
+		const ProtobufCFieldDescriptor *old_field =
+			message->descriptor->fields + field_index;
+		size_t el_size;
+
+		switch (old_field->type) {
+	        case PROTOBUF_C_TYPE_STRING: {
+			char **pstr = member;
+			const char *def = old_field->default_value;
+			if (*pstr != NULL && *pstr != def)
+				do_free(allocator, *pstr);
+			break;
+	        }
+		case PROTOBUF_C_TYPE_BYTES: {
+			ProtobufCBinaryData *bd = member;
+			const ProtobufCBinaryData *def_bd = old_field->default_value;
+			if (bd->data != NULL &&
+			   (def_bd == NULL || bd->data != def_bd->data))
+			{
+				do_free(allocator, bd->data);
+			}
+			break;
+	        }
+		case PROTOBUF_C_TYPE_MESSAGE: {
+			ProtobufCMessage **pmessage = member;
+			const ProtobufCMessage *def_mess = old_field->default_value;
+			if (*pmessage != NULL && *pmessage != def_mess)
+				protobuf_c_message_free_unpacked(*pmessage, allocator);
+			break;
+	        }
+		default:
+			break;
+		}
+
+		el_size = sizeof_elt_in_repeated_array(old_field->type);
+		memset (member, 0, el_size);
+	}
+	if (!parse_required_member (scanned_member, member, allocator, TRUE))
+		return FALSE;
+
+	*oneof_case = scanned_member->tag;
+	return TRUE;
+}
+
+
+static protobuf_c_boolean
 parse_optional_member(ScannedMember *scanned_member,
 		      void *member,
 		      ProtobufCMessage *message,
@@ -2561,8 +2752,13 @@ parse_member(ScannedMember *scanned_member,
 		return parse_required_member(scanned_member, member,
 					     allocator, TRUE);
 	case PROTOBUF_C_LABEL_OPTIONAL:
-		return parse_optional_member(scanned_member, member,
-					     message, allocator);
+		if (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_ONEOF)) {
+			return parse_oneof_member(scanned_member, member,
+						  message, allocator);
+		} else {
+			return parse_optional_member(scanned_member, member,
+						     message, allocator);
+		}
 	case PROTOBUF_C_LABEL_REPEATED:
 		if (scanned_member->wire_type ==
 		    PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED &&
@@ -2747,9 +2943,9 @@ protobuf_c_message_unpack(const ProtobufCMessageDescriptor *desc,
 			goto error_cleanup_during_scan;
 		}
 		/*
-                 * \todo Consider optimizing for field[1].id == tag, if field[1]
-                 * exists!
-                 */
+		 * \todo Consider optimizing for field[1].id == tag, if field[1]
+		 * exists!
+		 */
 		if (last_field == NULL || last_field->id != tag) {
 			/* lookup field */
 			int field_index =
@@ -2969,14 +3165,28 @@ void
 protobuf_c_message_free_unpacked(ProtobufCMessage *message,
 				 ProtobufCAllocator *allocator)
 {
-	const ProtobufCMessageDescriptor *desc = message->descriptor;
+	const ProtobufCMessageDescriptor *desc;
 	unsigned f;
+	
+	if (message == NULL)
+		return;
 
+	desc = message->descriptor;
+	
 	ASSERT_IS_MESSAGE(message);
+
 	if (allocator == NULL)
 		allocator = &protobuf_c__allocator;
 	message->descriptor = NULL;
 	for (f = 0; f < desc->n_fields; f++) {
+		if (0 != (desc->fields[f].flags & PROTOBUF_C_FIELD_FLAG_ONEOF) &&
+		    desc->fields[f].id !=
+		    STRUCT_MEMBER(uint32_t, message, desc->fields[f].quantifier_offset))
+		{
+			/* This is not the selected oneof, skip it */
+			continue;
+		}
+
 		if (desc->fields[f].label == PROTOBUF_C_LABEL_REPEATED) {
 			size_t n = STRUCT_MEMBER(size_t,
 						 message,
@@ -2985,24 +3195,25 @@ protobuf_c_message_free_unpacked(ProtobufCMessage *message,
 						  message,
 						  desc->fields[f].offset);
 
-			if (desc->fields[f].type == PROTOBUF_C_TYPE_STRING) {
-				unsigned i;
-				for (i = 0; i < n; i++)
-					do_free(allocator, ((char **) arr)[i]);
-			} else if (desc->fields[f].type == PROTOBUF_C_TYPE_BYTES) {
-				unsigned i;
-				for (i = 0; i < n; i++)
-					do_free(allocator, ((ProtobufCBinaryData *) arr)[i].data);
-			} else if (desc->fields[f].type == PROTOBUF_C_TYPE_MESSAGE) {
-				unsigned i;
-				for (i = 0; i < n; i++)
-					protobuf_c_message_free_unpacked(
-						((ProtobufCMessage **) arr)[i],
-						allocator
-					);
-			}
-			if (arr != NULL)
+			if (arr != NULL) {
+				if (desc->fields[f].type == PROTOBUF_C_TYPE_STRING) {
+					unsigned i;
+					for (i = 0; i < n; i++)
+						do_free(allocator, ((char **) arr)[i]);
+				} else if (desc->fields[f].type == PROTOBUF_C_TYPE_BYTES) {
+					unsigned i;
+					for (i = 0; i < n; i++)
+						do_free(allocator, ((ProtobufCBinaryData *) arr)[i].data);
+				} else if (desc->fields[f].type == PROTOBUF_C_TYPE_MESSAGE) {
+					unsigned i;
+					for (i = 0; i < n; i++)
+						protobuf_c_message_free_unpacked(
+							((ProtobufCMessage **) arr)[i],
+							allocator
+						);
+				}
 				do_free(allocator, arr);
+			}
 		} else if (desc->fields[f].type == PROTOBUF_C_TYPE_STRING) {
 			char *str = STRUCT_MEMBER(char *, message,
 						  desc->fields[f].offset);
@@ -3049,9 +3260,8 @@ protobuf_c_message_init(const ProtobufCMessageDescriptor * descriptor,
 protobuf_c_boolean
 protobuf_c_message_check(const ProtobufCMessage *message)
 {
-    unsigned i;
-
-    if (!message ||
+	unsigned i;
+	if (!message ||
 	    !message->descriptor ||
 	    message->descriptor->magic != PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC)
 	{
diff --git a/libs/libaxolotl/src/protobuf-c/protobuf-c.h b/libs/libaxolotl/src/protobuf-c/protobuf-c.h
index 55156a0510..705a1f7003 100644
--- a/libs/libaxolotl/src/protobuf-c/protobuf-c.h
+++ b/libs/libaxolotl/src/protobuf-c/protobuf-c.h
@@ -106,9 +106,25 @@ extern const ProtobufCMessageDescriptor foo__bar__baz_bah__descriptor;
  * sufficient to allow them to be cast to `ProtobufCMessage`.
  *
  * For each message defined in a `.proto` file, we generate a number of
- * functions. Each function name contains a prefix based on the package name and
- * message name in order to make it a unique C identifier.
+ * functions and macros. Each function name contains a prefix based on the
+ * package name and message name in order to make it a unique C identifier.
  *
+ * - `INIT`. Statically initializes a message object, initializing its
+ *   descriptor and setting its fields to default values. Uninitialized
+ *   messages cannot be processed by the protobuf-c library.
+ *
+~~~{.c}
+#define FOO__BAR__BAZ_BAH__INIT \
+ { PROTOBUF_C_MESSAGE_INIT (&foo__bar__baz_bah__descriptor), 0 }
+~~~
+ * - `init()`. Initializes a message object, initializing its descriptor and
+ *   setting its fields to default values. Uninitialized messages cannot be
+ *   processed by the protobuf-c library.
+ *
+~~~{.c}
+void foo__bar__baz_bah__init
+                     (Foo__Bar__BazBah *message);
+~~~
  * - `unpack()`. Unpacks data for a particular message format. Note that the
  *   `allocator` parameter is usually `NULL` to indicate that the system's
  *   `malloc()` and `free()` functions should be used for dynamically allocating
@@ -205,10 +221,9 @@ PROTOBUF_C__BEGIN_DECLS
 # define PROTOBUF_C__API
 #endif
 
-#if !defined(PROTOBUF_C__NO_DEPRECATED)
-# if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
-#  define PROTOBUF_C__DEPRECATED __attribute__((__deprecated__))
-# endif
+#if !defined(PROTOBUF_C__NO_DEPRECATED) && \
+	((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
+# define PROTOBUF_C__DEPRECATED __attribute__((__deprecated__))
 #else
 # define PROTOBUF_C__DEPRECATED
 #endif
@@ -240,6 +255,9 @@ typedef enum {
 
 	/** Set if the field is marked with the `deprecated` option. */
 	PROTOBUF_C_FIELD_FLAG_DEPRECATED	= (1 << 1),
+
+	/** Set if the field is a member of a oneof (union). */
+	PROTOBUF_C_FIELD_FLAG_ONEOF		= (1 << 2),
 } ProtobufCFieldFlag;
 
 /**
@@ -546,7 +564,7 @@ struct ProtobufCFieldDescriptor {
 	/**
 	 * The offset in bytes of the message's C structure's quantifier field
 	 * (the `has_MEMBER` field for optional members or the `n_MEMBER` field
-	 * for repeated members.
+	 * for repeated members or the case enum for oneofs).
 	 */
 	unsigned		quantifier_offset;
 
@@ -763,13 +781,13 @@ protobuf_c_version_number(void);
  * The version of the protobuf-c headers, represented as a string using the same
  * format as protobuf_c_version().
  */
-#define PROTOBUF_C_VERSION		"1.0.1"
+#define PROTOBUF_C_VERSION		"1.1.1"
 
 /**
  * The version of the protobuf-c headers, represented as an integer using the
  * same format as protobuf_c_version_number().
  */
-#define PROTOBUF_C_VERSION_NUMBER	1000001
+#define PROTOBUF_C_VERSION_NUMBER	1001001
 
 /**
  * The minimum protoc-c version which works with the current version of the
diff --git a/libs/libaxolotl/src/protocol.c b/libs/libaxolotl/src/protocol.c
index 5d29a5b138..9c8ce54c8f 100644
--- a/libs/libaxolotl/src/protocol.c
+++ b/libs/libaxolotl/src/protocol.c
@@ -3,50 +3,32 @@
 #include <string.h>
 #include <assert.h>
 
-#include "axolotl_internal.h"
 #include "curve.h"
+#include "signal_protocol_internal.h"
 #include "WhisperTextProtocol.pb-c.h"
 
-#define WHISPER_MESSAGE_MAC_LENGTH 8
+#define SIGNAL_MESSAGE_MAC_LENGTH 8
 #define SIGNATURE_LENGTH 64
 
-struct key_exchange_message
-{
-    axolotl_type_base base;
-
-    uint8_t version;
-    uint8_t supported_version;
-    uint32_t sequence;
-    uint32_t flags;
-
-    ec_public_key *base_key;
-    uint8_t base_key_signature[CURVE_SIGNATURE_LEN];
-
-    ec_public_key *ratchet_key;
-    ec_public_key *identity_key;
-
-    axolotl_buffer *serialized;
-};
-
 struct ciphertext_message
 {
-    axolotl_type_base base;
+    signal_type_base base;
     int message_type;
-    axolotl_context *global_context;
-    axolotl_buffer *serialized;
+    signal_context *global_context;
+    signal_buffer *serialized;
 };
 
-struct whisper_message
+struct signal_message
 {
     ciphertext_message base_message;
     uint8_t message_version;
     ec_public_key *sender_ratchet_key;
     uint32_t counter;
     uint32_t previous_counter;
-    axolotl_buffer *ciphertext;
+    signal_buffer *ciphertext;
 };
 
-struct pre_key_whisper_message
+struct pre_key_signal_message
 {
     ciphertext_message base_message;
     uint8_t version;
@@ -56,7 +38,7 @@ struct pre_key_whisper_message
     uint32_t signed_pre_key_id;
     ec_public_key *base_key;
     ec_public_key *identity_key;
-    whisper_message *message;
+    signal_message *message;
 };
 
 struct sender_key_message
@@ -65,7 +47,7 @@ struct sender_key_message
     uint8_t message_version;
     uint32_t key_id;
     uint32_t iteration;
-    axolotl_buffer *ciphertext;
+    signal_buffer *ciphertext;
 };
 
 struct sender_key_distribution_message
@@ -73,360 +55,23 @@ struct sender_key_distribution_message
     ciphertext_message base_message;
     uint32_t id;
     uint32_t iteration;
-    axolotl_buffer *chain_key;
+    signal_buffer *chain_key;
     ec_public_key *signature_key;
 };
 
-static int key_exchange_message_serialize(axolotl_buffer **buffer, const key_exchange_message *message);
-
-static int whisper_message_serialize(axolotl_buffer **buffer, const whisper_message *message);
-static int whisper_message_get_mac(axolotl_buffer **buffer,
+static int signal_message_serialize(signal_buffer **buffer, const signal_message *message);
+static int signal_message_get_mac(signal_buffer **buffer,
         uint8_t message_version,
         ec_public_key *sender_identity_key,
         ec_public_key *receiver_identity_key,
         const uint8_t *mac_key, size_t mac_key_len,
         const uint8_t *serialized, size_t serialized_len,
-        axolotl_context *global_context);
-
-static int pre_key_whisper_message_serialize(axolotl_buffer **buffer, const pre_key_whisper_message *message);
-
-static int sender_key_message_serialize(axolotl_buffer **buffer, const sender_key_message *message, ec_private_key *signature_key, axolotl_context *global_context);
-static int sender_key_distribution_message_serialize(axolotl_buffer **buffer, const sender_key_distribution_message *message);
-
-int key_exchange_message_create(key_exchange_message **message,
-        uint8_t message_version, uint32_t sequence, uint32_t flags,
-        ec_public_key *base_key, uint8_t *base_key_signature,
-        ec_public_key *ratchet_key, ec_public_key *identity_key)
-{
-    int result = 0;
-    key_exchange_message *result_message = 0;
-
-    result_message = malloc(sizeof(key_exchange_message));
-    if(!result_message) {
-        result = AX_ERR_NOMEM;
-        goto complete;
-    }
-    memset(result_message, 0, sizeof(key_exchange_message));
-    AXOLOTL_INIT(result_message, key_exchange_message_destroy);
-
-    result_message->supported_version = CIPHERTEXT_CURRENT_VERSION;
-    result_message->version = message_version;
-    result_message->sequence = sequence;
-    result_message->flags = flags;
-
-    AXOLOTL_REF(base_key);
-    result_message->base_key = base_key;
-
-    memcpy(result_message->base_key_signature, base_key_signature, sizeof(result_message->base_key_signature));
-
-    AXOLOTL_REF(ratchet_key);
-    result_message->ratchet_key = ratchet_key;
-
-    AXOLOTL_REF(identity_key);
-    result_message->identity_key = identity_key;
-
-    result = key_exchange_message_serialize(&result_message->serialized, result_message);
-    if(result < 0) {
-        goto complete;
-    }
-    result = 0;
-
-complete:
-    if(result >= 0) {
-        *message = result_message;
-    }
-    else {
-        if(result_message) {
-            AXOLOTL_UNREF(result_message);
-        }
-    }
-    return result;
-}
-
-static int key_exchange_message_serialize(axolotl_buffer **buffer, const key_exchange_message *message)
-{
-    int result = 0;
-    size_t result_size = 0;
-    axolotl_buffer *result_buf = 0;
-    Textsecure__KeyExchangeMessage message_structure = TEXTSECURE__KEY_EXCHANGE_MESSAGE__INIT;
-    size_t len = 0;
-    uint8_t *data = 0;
-
-    uint8_t version = (message->version << 4) | message->supported_version;
-
-    message_structure.has_id = 1;
-    message_structure.id = (message->sequence << 5) | message->flags;
-
-    if(message->base_key) {
-        message_structure.has_basekey = 1;
-        result = ec_public_key_serialize_protobuf(&message_structure.basekey, message->base_key);
-        if(result < 0) {
-            goto complete;
-        }
-    }
-
-    if(message->ratchet_key) {
-        message_structure.has_ratchetkey = 1;
-        result = ec_public_key_serialize_protobuf(&message_structure.ratchetkey, message->ratchet_key);
-        if(result < 0) {
-            goto complete;
-        }
-    }
-
-    if(message->identity_key) {
-        message_structure.has_identitykey = 1;
-        result = ec_public_key_serialize_protobuf(&message_structure.identitykey, message->identity_key);
-        if(result < 0) {
-            goto complete;
-        }
-    }
-
-    if(message->version >= 3) {
-        message_structure.has_basekeysignature = 1;
-        message_structure.basekeysignature.len = sizeof(message->base_key_signature);
-        message_structure.basekeysignature.data = malloc(message_structure.basekeysignature.len);
-        if(!message_structure.basekeysignature.data) {
-            result = AX_ERR_NOMEM;
-            goto complete;
-        }
-        memcpy(message_structure.basekeysignature.data, message->base_key_signature, message_structure.basekeysignature.len);
-    }
-
-    len = textsecure__key_exchange_message__get_packed_size(&message_structure);
-
-    result_buf = axolotl_buffer_alloc(len + 1);
-    if(!result_buf) {
-        result = AX_ERR_NOMEM;
-        goto complete;
-    }
-
-    data = axolotl_buffer_data(result_buf);
-    data[0] = version;
-
-    result_size = textsecure__key_exchange_message__pack(&message_structure, data + 1);
-    if(result_size != len) {
-        axolotl_buffer_free(result_buf);
-        result = AX_ERR_INVALID_PROTO_BUF;
-        result_buf = 0;
-        goto complete;
-    }
-
-complete:
-    if(message_structure.basekey.data) {
-        free(message_structure.basekey.data);
-    }
-    if(message_structure.ratchetkey.data) {
-        free(message_structure.ratchetkey.data);
-    }
-    if(message_structure.identitykey.data) {
-        free(message_structure.identitykey.data);
-    }
-    if(message_structure.basekeysignature.data) {
-        free(message_structure.basekeysignature.data);
-    }
-    if(result >= 0) {
-        *buffer = result_buf;
-    }
-    return result;
-}
-
-int key_exchange_message_deserialize(key_exchange_message **message, const uint8_t *data, size_t len, axolotl_context *global_context)
-{
-    int result = 0;
-    key_exchange_message *result_message = 0;
-    Textsecure__KeyExchangeMessage *message_structure = 0;
-    uint8_t version = 0;
-    uint8_t supported_version = 0;
-
-    if(!data || len <= 1) {
-        result = AX_ERR_INVAL;
-        goto complete;
-    }
-
-    version = (data[0] & 0xF0) >> 4;
-    supported_version = data[0] & 0x0F;
-
-    if(version <= CIPHERTEXT_UNSUPPORTED_VERSION) {
-        axolotl_log(global_context, AX_LOG_WARNING, "Unsupported legacy version: %d", version);
-        result = AX_ERR_LEGACY_MESSAGE;
-        goto complete;
-    }
+        signal_context *global_context);
 
-    if(version > CIPHERTEXT_CURRENT_VERSION) {
-        axolotl_log(global_context, AX_LOG_WARNING, "Unknown version: %d", version);
-        result = AX_ERR_INVALID_VERSION;
-        goto complete;
-    }
+static int pre_key_signal_message_serialize(signal_buffer **buffer, const pre_key_signal_message *message);
 
-    message_structure = textsecure__key_exchange_message__unpack(0, len - 1, data + 1);
-    if(!message_structure) {
-        result = AX_ERR_INVALID_PROTO_BUF;
-        goto complete;
-    }
-
-    if(!message_structure->has_id || !message_structure->has_basekey
-            || !message_structure->has_ratchetkey || !message_structure->has_identitykey
-            || (version >= 3 && !message_structure->has_basekeysignature)) {
-        axolotl_log(global_context, AX_LOG_WARNING, "Some required fields missing");
-        result = AX_ERR_INVALID_MESSAGE;
-        goto complete;
-    }
-
-    if(message_structure->has_basekeysignature && message_structure->basekeysignature.len != CURVE_SIGNATURE_LEN) {
-        axolotl_log(global_context, AX_LOG_WARNING, "Invalid base key signature length: %d", message_structure->basekeysignature.len);
-        result = AX_ERR_INVALID_MESSAGE;
-        goto complete;
-    }
-
-    result_message = malloc(sizeof(key_exchange_message));
-    if(!result_message) {
-        result = AX_ERR_NOMEM;
-        goto complete;
-    }
-    memset(result_message, 0, sizeof(key_exchange_message));
-    AXOLOTL_INIT(result_message, key_exchange_message_destroy);
-
-    result_message->version = version;
-    result_message->supported_version = supported_version;
-    result_message->sequence = message_structure->id >> 5;
-    result_message->flags = message_structure->id & 0x1F;
-
-    result = curve_decode_point(&result_message->base_key,
-            message_structure->basekey.data, message_structure->basekey.len, global_context);
-    if(result < 0) {
-        goto complete;
-    }
-
-    if(message_structure->has_basekeysignature) {
-        memcpy(result_message->base_key_signature,
-                message_structure->basekeysignature.data,
-                message_structure->basekeysignature.len);
-    }
-
-    result = curve_decode_point(&result_message->ratchet_key,
-            message_structure->ratchetkey.data, message_structure->ratchetkey.len, global_context);
-    if(result < 0) {
-        goto complete;
-    }
-
-    result = curve_decode_point(&result_message->identity_key,
-            message_structure->identitykey.data, message_structure->identitykey.len, global_context);
-    if(result < 0) {
-        goto complete;
-    }
-
-    result_message->serialized = axolotl_buffer_alloc(len);
-    if(!result_message->serialized) {
-        result = AX_ERR_NOMEM;
-        goto complete;
-    }
-    memcpy(result_message->serialized, data, len);
-
-complete:
-    if(message_structure) {
-        textsecure__key_exchange_message__free_unpacked(message_structure, 0);
-    }
-    if(result >= 0) {
-        *message = result_message;
-    }
-    else {
-        if(result_message) {
-            AXOLOTL_UNREF(result_message);
-        }
-    }
-    return result;
-}
-
-axolotl_buffer *key_exchange_message_get_serialized(const key_exchange_message *message)
-{
-    assert(message);
-    assert(message->serialized);
-    return message->serialized;
-}
-
-uint8_t key_exchange_message_get_version(const key_exchange_message *message)
-{
-    assert(message);
-    return message->version;
-}
-
-ec_public_key *key_exchange_message_get_base_key(const key_exchange_message *message)
-{
-    assert(message);
-    return message->base_key;
-}
-
-uint8_t *key_exchange_message_get_base_key_signature(key_exchange_message *message)
-{
-    assert(message);
-    return message->base_key_signature;
-}
-
-ec_public_key *key_exchange_message_get_ratchet_key(const key_exchange_message *message)
-{
-    assert(message);
-    return message->ratchet_key;
-}
-
-ec_public_key *key_exchange_message_get_identity_key(const key_exchange_message *message)
-{
-    assert(message);
-    return message->identity_key;
-}
-
-int key_exchange_message_has_identity_key(const key_exchange_message *message)
-{
-    assert(message);
-    return 1;
-}
-
-uint8_t key_exchange_message_get_max_version(const key_exchange_message *message)
-{
-    assert(message);
-    return message->supported_version;
-}
-
-int key_exchange_message_is_response(const key_exchange_message *message)
-{
-    assert(message);
-    return (message->flags & KEY_EXCHANGE_RESPONSE_FLAG) != 0;
-}
-
-int key_exchange_message_is_initiate(const key_exchange_message *message)
-{
-    assert(message);
-    return (message->flags & KEY_EXCHANGE_INITIATE_FLAG) != 0;
-}
-
-int key_exchange_message_is_response_for_simultaneous_initiate(const key_exchange_message *message)
-{
-    assert(message);
-    return (message->flags & KEY_EXCHANGE_SIMULTAENOUS_INITIATE_FLAG) != 0;
-}
-
-uint32_t key_exchange_message_get_flags(const key_exchange_message *message)
-{
-    assert(message);
-    return message->flags;
-}
-
-uint32_t key_exchange_message_get_sequence(const key_exchange_message *message)
-{
-    assert(message);
-    return message->sequence;
-}
-
-void key_exchange_message_destroy(axolotl_type_base *type)
-{
-    key_exchange_message *message = (key_exchange_message *)type;
-    AXOLOTL_UNREF(message->base_key);
-    AXOLOTL_UNREF(message->ratchet_key);
-    AXOLOTL_UNREF(message->identity_key);
-    if(message->serialized) {
-        axolotl_buffer_free(message->serialized);
-    }
-    free(message);
-}
+static int sender_key_message_serialize(signal_buffer **buffer, const sender_key_message *message, ec_private_key *signature_key, signal_context *global_context);
+static int sender_key_distribution_message_serialize(signal_buffer **buffer, const sender_key_distribution_message *message);
 
 /*------------------------------------------------------------------------*/
 
@@ -436,7 +81,7 @@ int ciphertext_message_get_type(const ciphertext_message *message)
     return message->message_type;
 }
 
-axolotl_buffer *ciphertext_message_get_serialized(const ciphertext_message *message)
+signal_buffer *ciphertext_message_get_serialized(const ciphertext_message *message)
 {
     assert(message);
     return message->serialized;
@@ -444,76 +89,76 @@ axolotl_buffer *ciphertext_message_get_serialized(const ciphertext_message *mess
 
 /*------------------------------------------------------------------------*/
 
-int whisper_message_create(whisper_message **message, uint8_t message_version,
+int signal_message_create(signal_message **message, uint8_t message_version,
         const uint8_t *mac_key, size_t mac_key_len,
         ec_public_key *sender_ratchet_key, uint32_t counter, uint32_t previous_counter,
         const uint8_t *ciphertext, size_t ciphertext_len,
         ec_public_key *sender_identity_key, ec_public_key *receiver_identity_key,
-        axolotl_context *global_context)
+        signal_context *global_context)
 {
     int result = 0;
-    axolotl_buffer *message_buf = 0;
-    axolotl_buffer *mac_buf = 0;
-    whisper_message *result_message = 0;
+    signal_buffer *message_buf = 0;
+    signal_buffer *mac_buf = 0;
+    signal_message *result_message = 0;
 
     assert(global_context);
 
-    result_message = malloc(sizeof(whisper_message));
+    result_message = malloc(sizeof(signal_message));
     if(!result_message) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
-    memset(result_message, 0, sizeof(whisper_message));
-    AXOLOTL_INIT(result_message, whisper_message_destroy);
+    memset(result_message, 0, sizeof(signal_message));
+    SIGNAL_INIT(result_message, signal_message_destroy);
 
-    result_message->base_message.message_type = CIPHERTEXT_WHISPER_TYPE;
+    result_message->base_message.message_type = CIPHERTEXT_SIGNAL_TYPE;
     result_message->base_message.global_context = global_context;
 
-    AXOLOTL_REF(sender_ratchet_key);
+    SIGNAL_REF(sender_ratchet_key);
     result_message->sender_ratchet_key = sender_ratchet_key;
 
     result_message->counter = counter;
     result_message->previous_counter = previous_counter;
 
-    result_message->ciphertext = axolotl_buffer_create(ciphertext, ciphertext_len);
+    result_message->ciphertext = signal_buffer_create(ciphertext, ciphertext_len);
     if(!result_message->ciphertext) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
     result_message->message_version = message_version;
 
-    result = whisper_message_serialize(&message_buf, result_message);
+    result = signal_message_serialize(&message_buf, result_message);
     if(result < 0) {
         goto complete;
     }
 
-    result = whisper_message_get_mac(&mac_buf,
+    result = signal_message_get_mac(&mac_buf,
             message_version, sender_identity_key, receiver_identity_key,
             mac_key, mac_key_len,
-            axolotl_buffer_data(message_buf),
-            axolotl_buffer_len(message_buf),
+            signal_buffer_data(message_buf),
+            signal_buffer_len(message_buf),
             global_context);
     if(result < 0) {
         goto complete;
     }
 
-    result_message->base_message.serialized = axolotl_buffer_append(
+    result_message->base_message.serialized = signal_buffer_append(
             message_buf,
-            axolotl_buffer_data(mac_buf),
-            axolotl_buffer_len(mac_buf));
+            signal_buffer_data(mac_buf),
+            signal_buffer_len(mac_buf));
     if(result_message->base_message.serialized) {
         message_buf = 0;
     }
     else {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
     }
 
 complete:
     if(message_buf) {
-        axolotl_buffer_free(message_buf);
+        signal_buffer_free(message_buf);
     }
     if(mac_buf) {
-        axolotl_buffer_free(mac_buf);
+        signal_buffer_free(mac_buf);
     }
     if(result >= 0) {
         result = 0;
@@ -521,18 +166,18 @@ complete:
     }
     else {
         if(result_message) {
-            AXOLOTL_UNREF(result_message);
+            SIGNAL_UNREF(result_message);
         }
     }
     return result;
 }
 
-static int whisper_message_serialize(axolotl_buffer **buffer, const whisper_message *message)
+static int signal_message_serialize(signal_buffer **buffer, const signal_message *message)
 {
     int result = 0;
     size_t result_size = 0;
-    axolotl_buffer *result_buf = 0;
-    Textsecure__WhisperMessage message_structure = TEXTSECURE__WHISPER_MESSAGE__INIT;
+    signal_buffer *result_buf = 0;
+    Textsecure__SignalMessage message_structure = TEXTSECURE__SIGNAL_MESSAGE__INIT;
     size_t len = 0;
     uint8_t *data = 0;
 
@@ -550,25 +195,25 @@ static int whisper_message_serialize(axolotl_buffer **buffer, const whisper_mess
     message_structure.previouscounter = message->previous_counter;
     message_structure.has_previouscounter = 1;
 
-    message_structure.ciphertext.data = axolotl_buffer_data(message->ciphertext);
-    message_structure.ciphertext.len = axolotl_buffer_len(message->ciphertext);
+    message_structure.ciphertext.data = signal_buffer_data(message->ciphertext);
+    message_structure.ciphertext.len = signal_buffer_len(message->ciphertext);
     message_structure.has_ciphertext = 1;
 
-    len = textsecure__whisper_message__get_packed_size(&message_structure);
+    len = textsecure__signal_message__get_packed_size(&message_structure);
 
-    result_buf = axolotl_buffer_alloc(len + 1);
+    result_buf = signal_buffer_alloc(len + 1);
     if(!result_buf) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    data = axolotl_buffer_data(result_buf);
+    data = signal_buffer_data(result_buf);
     data[0] = version;
 
-    result_size = textsecure__whisper_message__pack(&message_structure, data + 1);
+    result_size = textsecure__signal_message__pack(&message_structure, data + 1);
     if(result_size != len) {
-        axolotl_buffer_free(result_buf);
-        result = AX_ERR_INVALID_PROTO_BUF;
+        signal_buffer_free(result_buf);
+        result = SG_ERR_INVALID_PROTO_BUF;
         result_buf = 0;
         goto complete;
     }
@@ -583,11 +228,11 @@ complete:
     return result;
 }
 
-int whisper_message_deserialize(whisper_message **message, const uint8_t *data, size_t len, axolotl_context *global_context)
+int signal_message_deserialize(signal_message **message, const uint8_t *data, size_t len, signal_context *global_context)
 {
     int result = 0;
-    whisper_message *result_message = 0;
-    Textsecure__WhisperMessage *message_structure = 0;
+    signal_message *result_message = 0;
+    Textsecure__SignalMessage *message_structure = 0;
     uint8_t version = 0;
     uint8_t *ciphertext_data = 0;
     uint8_t *serialized_data = 0;
@@ -596,8 +241,8 @@ int whisper_message_deserialize(whisper_message **message, const uint8_t *data,
 
     assert(global_context);
 
-    if(!data || len <= 1 + WHISPER_MESSAGE_MAC_LENGTH) {
-        result = AX_ERR_INVAL;
+    if(!data || len <= 1 + SIGNAL_MESSAGE_MAC_LENGTH) {
+        result = SG_ERR_INVAL;
         goto complete;
     }
 
@@ -605,43 +250,43 @@ int whisper_message_deserialize(whisper_message **message, const uint8_t *data,
 
     /* Set some pointers and lengths for the sections of the raw data */
     message_data = data + 1;
-    message_len = len - 1 - WHISPER_MESSAGE_MAC_LENGTH;
+    message_len = len - 1 - SIGNAL_MESSAGE_MAC_LENGTH;
 
     if(version <= CIPHERTEXT_UNSUPPORTED_VERSION) {
-        axolotl_log(global_context, AX_LOG_WARNING, "Unsupported legacy version: %d", version);
-        result = AX_ERR_LEGACY_MESSAGE;
+        signal_log(global_context, SG_LOG_WARNING, "Unsupported legacy version: %d", version);
+        result = SG_ERR_LEGACY_MESSAGE;
         goto complete;
     }
 
     if(version > CIPHERTEXT_CURRENT_VERSION) {
-        axolotl_log(global_context, AX_LOG_WARNING, "Unknown version: %d", version);
-        result = AX_ERR_INVALID_MESSAGE;
+        signal_log(global_context, SG_LOG_WARNING, "Unknown version: %d", version);
+        result = SG_ERR_INVALID_MESSAGE;
         goto complete;
     }
 
-    message_structure = textsecure__whisper_message__unpack(0, message_len, message_data);
+    message_structure = textsecure__signal_message__unpack(0, message_len, message_data);
     if(!message_structure) {
-        result = AX_ERR_INVALID_PROTO_BUF;
+        result = SG_ERR_INVALID_PROTO_BUF;
         goto complete;
     }
 
     if(!message_structure->has_ciphertext
             || !message_structure->has_counter
             || !message_structure->has_ratchetkey) {
-        axolotl_log(global_context, AX_LOG_WARNING, "Incomplete message");
-        result = AX_ERR_INVALID_MESSAGE;
+        signal_log(global_context, SG_LOG_WARNING, "Incomplete message");
+        result = SG_ERR_INVALID_MESSAGE;
         goto complete;
     }
 
-    result_message = malloc(sizeof(whisper_message));
+    result_message = malloc(sizeof(signal_message));
     if(!result_message) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
-    memset(result_message, 0, sizeof(whisper_message));
-    AXOLOTL_INIT(result_message, whisper_message_destroy);
+    memset(result_message, 0, sizeof(signal_message));
+    SIGNAL_INIT(result_message, signal_message_destroy);
 
-    result_message->base_message.message_type = CIPHERTEXT_WHISPER_TYPE;
+    result_message->base_message.message_type = CIPHERTEXT_SIGNAL_TYPE;
     result_message->base_message.global_context = global_context;
 
     result = curve_decode_point(&result_message->sender_ratchet_key,
@@ -654,49 +299,49 @@ int whisper_message_deserialize(whisper_message **message, const uint8_t *data,
     result_message->counter = message_structure->counter;
     result_message->previous_counter = message_structure->previouscounter;
 
-    result_message->ciphertext = axolotl_buffer_alloc(message_structure->ciphertext.len);
+    result_message->ciphertext = signal_buffer_alloc(message_structure->ciphertext.len);
     if(!result_message->ciphertext) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
-    ciphertext_data = axolotl_buffer_data(result_message->ciphertext);
+    ciphertext_data = signal_buffer_data(result_message->ciphertext);
     memcpy(ciphertext_data, message_structure->ciphertext.data, message_structure->ciphertext.len);
 
-    result_message->base_message.serialized = axolotl_buffer_alloc(len);
+    result_message->base_message.serialized = signal_buffer_alloc(len);
     if(!result_message->base_message.serialized) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
-    serialized_data = axolotl_buffer_data(result_message->base_message.serialized);
+    serialized_data = signal_buffer_data(result_message->base_message.serialized);
     memcpy(serialized_data, data, len);
 
 complete:
     if(message_structure) {
-        textsecure__whisper_message__free_unpacked(message_structure, 0);
+        textsecure__signal_message__free_unpacked(message_structure, 0);
     }
     if(result >= 0) {
         *message = result_message;
     }
     else {
         if(result_message) {
-            AXOLOTL_UNREF(result_message);
+            SIGNAL_UNREF(result_message);
         }
     }
     return result;
 }
 
-int whisper_message_copy(whisper_message **message, whisper_message *other_message, axolotl_context *global_context)
+int signal_message_copy(signal_message **message, signal_message *other_message, signal_context *global_context)
 {
     int result = 0;
-    whisper_message *result_message = 0;
+    signal_message *result_message = 0;
 
     assert(other_message);
     assert(global_context);
 
-    result = whisper_message_deserialize(
+    result = signal_message_deserialize(
             &result_message,
-            axolotl_buffer_data(other_message->base_message.serialized),
-            axolotl_buffer_len(other_message->base_message.serialized),
+            signal_buffer_data(other_message->base_message.serialized),
+            signal_buffer_len(other_message->base_message.serialized),
             global_context);
     if(result >= 0) {
         *message = result_message;
@@ -705,45 +350,45 @@ int whisper_message_copy(whisper_message **message, whisper_message *other_messa
     return result;
 }
 
-ec_public_key *whisper_message_get_sender_ratchet_key(const whisper_message *message)
+ec_public_key *signal_message_get_sender_ratchet_key(const signal_message *message)
 {
     assert(message);
     return message->sender_ratchet_key;
 }
 
-uint8_t whisper_message_get_message_version(const whisper_message *message)
+uint8_t signal_message_get_message_version(const signal_message *message)
 {
     assert(message);
     return message->message_version;
 }
 
-uint32_t whisper_message_get_counter(const whisper_message *message)
+uint32_t signal_message_get_counter(const signal_message *message)
 {
     assert(message);
     return message->counter;
 }
 
-axolotl_buffer *whisper_message_get_body(const whisper_message *message)
+signal_buffer *signal_message_get_body(const signal_message *message)
 {
     assert(message);
     return message->ciphertext;
 }
 
-int whisper_message_verify_mac(whisper_message *message,
+int signal_message_verify_mac(signal_message *message,
         uint8_t message_version,
         ec_public_key *sender_identity_key,
         ec_public_key *receiver_identity_key,
         const uint8_t *mac_key, size_t mac_key_len,
-        axolotl_context *global_context)
+        signal_context *global_context)
 {
     int result = 0;
-    axolotl_buffer *our_mac_buffer = 0;
+    signal_buffer *our_mac_buffer = 0;
     uint8_t *serialized_data = 0;
     size_t serialized_len = 0;
     uint8_t *serialized_message_data = 0;
     size_t serialized_message_len = 0;
     uint8_t *their_mac_data = 0;
-    const size_t their_mac_len = WHISPER_MESSAGE_MAC_LENGTH;
+    const size_t their_mac_len = SIGNAL_MESSAGE_MAC_LENGTH;
     uint8_t *our_mac_data = 0;
     size_t our_mac_len = 0;
 
@@ -751,13 +396,13 @@ int whisper_message_verify_mac(whisper_message *message,
     assert(message->base_message.serialized);
 
     /* Set some pointers and lengths for the sections of the raw data */
-    serialized_data = axolotl_buffer_data(message->base_message.serialized);
-    serialized_len = axolotl_buffer_len(message->base_message.serialized);
+    serialized_data = signal_buffer_data(message->base_message.serialized);
+    serialized_len = signal_buffer_len(message->base_message.serialized);
     serialized_message_data = serialized_data;
-    serialized_message_len = serialized_len - WHISPER_MESSAGE_MAC_LENGTH;
+    serialized_message_len = serialized_len - SIGNAL_MESSAGE_MAC_LENGTH;
     their_mac_data = serialized_data + serialized_message_len;
 
-    result = whisper_message_get_mac(&our_mac_buffer,
+    result = signal_message_get_mac(&our_mac_buffer,
             message->message_version,
             sender_identity_key, receiver_identity_key,
             mac_key, mac_key_len,
@@ -767,48 +412,48 @@ int whisper_message_verify_mac(whisper_message *message,
         goto complete;
     }
 
-    our_mac_data = axolotl_buffer_data(our_mac_buffer);
-    our_mac_len = axolotl_buffer_len(our_mac_buffer);
+    our_mac_data = signal_buffer_data(our_mac_buffer);
+    our_mac_len = signal_buffer_len(our_mac_buffer);
     if(our_mac_len != their_mac_len) {
-        axolotl_log(global_context, AX_LOG_WARNING, "MAC length mismatch: %d != %d", our_mac_len, their_mac_len);
-        result = AX_ERR_UNKNOWN;
+        signal_log(global_context, SG_LOG_WARNING, "MAC length mismatch: %d != %d", our_mac_len, their_mac_len);
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
-    if(axolotl_constant_memcmp(our_mac_data, their_mac_data, our_mac_len) == 0) {
+    if(signal_constant_memcmp(our_mac_data, their_mac_data, our_mac_len) == 0) {
         result = 1;
     }
     else {
-        axolotl_log(global_context, AX_LOG_NOTICE, "Bad MAC");
+        signal_log(global_context, SG_LOG_NOTICE, "Bad MAC");
         result = 0;
     }
 
 complete:
     if(our_mac_buffer) {
-        axolotl_buffer_free(our_mac_buffer);
+        signal_buffer_free(our_mac_buffer);
     }
     return result;
 }
 
-static int whisper_message_get_mac(axolotl_buffer **buffer,
+static int signal_message_get_mac(signal_buffer **buffer,
         uint8_t message_version,
         ec_public_key *sender_identity_key,
         ec_public_key *receiver_identity_key,
         const uint8_t *mac_key, size_t mac_key_len,
         const uint8_t *serialized, size_t serialized_len,
-        axolotl_context *global_context)
+        signal_context *global_context)
 {
     int result = 0;
     void *hmac_context;
-    axolotl_buffer *sender_key_buffer = 0;
-    axolotl_buffer *receiver_key_buffer = 0;
-    axolotl_buffer *full_mac_buffer = 0;
-    axolotl_buffer *result_buf = 0;
+    signal_buffer *sender_key_buffer = 0;
+    signal_buffer *receiver_key_buffer = 0;
+    signal_buffer *full_mac_buffer = 0;
+    signal_buffer *result_buf = 0;
     uint8_t *result_data = 0;
 
     assert(global_context);
 
-    result = axolotl_hmac_sha256_init(global_context,
+    result = signal_hmac_sha256_init(global_context,
             &hmac_context, mac_key, mac_key_len);
     if(result < 0) {
         goto complete;
@@ -820,9 +465,9 @@ static int whisper_message_get_mac(axolotl_buffer **buffer,
             goto complete;
         }
 
-        result = axolotl_hmac_sha256_update(global_context, hmac_context,
-                axolotl_buffer_data(sender_key_buffer),
-                axolotl_buffer_len(sender_key_buffer));
+        result = signal_hmac_sha256_update(global_context, hmac_context,
+                signal_buffer_data(sender_key_buffer),
+                signal_buffer_len(sender_key_buffer));
         if(result < 0) {
             goto complete;
         }
@@ -832,86 +477,86 @@ static int whisper_message_get_mac(axolotl_buffer **buffer,
             goto complete;
         }
 
-        result = axolotl_hmac_sha256_update(global_context, hmac_context,
-                axolotl_buffer_data(receiver_key_buffer),
-                axolotl_buffer_len(receiver_key_buffer));
+        result = signal_hmac_sha256_update(global_context, hmac_context,
+                signal_buffer_data(receiver_key_buffer),
+                signal_buffer_len(receiver_key_buffer));
         if(result < 0) {
             goto complete;
         }
     }
 
-    result = axolotl_hmac_sha256_update(global_context, hmac_context,
+    result = signal_hmac_sha256_update(global_context, hmac_context,
         serialized, serialized_len);
     if(result < 0) {
         goto complete;
     }
 
-    result = axolotl_hmac_sha256_final(global_context,
+    result = signal_hmac_sha256_final(global_context,
             hmac_context, &full_mac_buffer);
-    if(result < 0 || axolotl_buffer_len(full_mac_buffer) < WHISPER_MESSAGE_MAC_LENGTH) {
-        if(result >= 0) { result = AX_ERR_UNKNOWN; }
+    if(result < 0 || signal_buffer_len(full_mac_buffer) < SIGNAL_MESSAGE_MAC_LENGTH) {
+        if(result >= 0) { result = SG_ERR_UNKNOWN; }
         goto complete;
     }
 
-    result_buf = axolotl_buffer_alloc(WHISPER_MESSAGE_MAC_LENGTH);
+    result_buf = signal_buffer_alloc(SIGNAL_MESSAGE_MAC_LENGTH);
     if(!result_buf) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    result_data = axolotl_buffer_data(result_buf);
-    memcpy(result_data, axolotl_buffer_data(full_mac_buffer), WHISPER_MESSAGE_MAC_LENGTH);
+    result_data = signal_buffer_data(result_buf);
+    memcpy(result_data, signal_buffer_data(full_mac_buffer), SIGNAL_MESSAGE_MAC_LENGTH);
 
 complete:
-    axolotl_hmac_sha256_cleanup(global_context, hmac_context);
-    axolotl_buffer_free(sender_key_buffer);
-    axolotl_buffer_free(receiver_key_buffer);
-    axolotl_buffer_free(full_mac_buffer);
+    signal_hmac_sha256_cleanup(global_context, hmac_context);
+    signal_buffer_free(sender_key_buffer);
+    signal_buffer_free(receiver_key_buffer);
+    signal_buffer_free(full_mac_buffer);
     if(result >= 0) {
         *buffer = result_buf;
     }
     return result;
 }
 
-int whisper_message_is_legacy(const uint8_t *data, size_t len)
+int signal_message_is_legacy(const uint8_t *data, size_t len)
 {
     return data && len >= 1 && ((data[0] & 0xF0) >> 4) <= CIPHERTEXT_UNSUPPORTED_VERSION;
 }
 
-void whisper_message_destroy(axolotl_type_base *type)
+void signal_message_destroy(signal_type_base *type)
 {
-    whisper_message *message = (whisper_message *)type;
+    signal_message *message = (signal_message *)type;
 
     if(message->base_message.serialized) {
-        axolotl_buffer_free(message->base_message.serialized);
+        signal_buffer_free(message->base_message.serialized);
     }
-    AXOLOTL_UNREF(message->sender_ratchet_key);
+    SIGNAL_UNREF(message->sender_ratchet_key);
     if(message->ciphertext) {
-        axolotl_buffer_free(message->ciphertext);
+        signal_buffer_free(message->ciphertext);
     }
     free(message);
 }
 
 /*------------------------------------------------------------------------*/
 
-int pre_key_whisper_message_create(pre_key_whisper_message **pre_key_message,
+int pre_key_signal_message_create(pre_key_signal_message **pre_key_message,
         uint8_t message_version, uint32_t registration_id, const uint32_t *pre_key_id,
         uint32_t signed_pre_key_id, ec_public_key *base_key, ec_public_key *identity_key,
-        whisper_message *message,
-        axolotl_context *global_context)
+        signal_message *message,
+        signal_context *global_context)
 {
     int result = 0;
-    pre_key_whisper_message *result_message = 0;
+    pre_key_signal_message *result_message = 0;
 
     assert(global_context);
 
-    result_message = malloc(sizeof(pre_key_whisper_message));
+    result_message = malloc(sizeof(pre_key_signal_message));
 
     if(!result_message) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
-    memset(result_message, 0, sizeof(pre_key_whisper_message));
-    AXOLOTL_INIT(result_message, pre_key_whisper_message_destroy);
+    memset(result_message, 0, sizeof(pre_key_signal_message));
+    SIGNAL_INIT(result_message, pre_key_signal_message_destroy);
 
     result_message->base_message.message_type = CIPHERTEXT_PREKEY_TYPE;
     result_message->base_message.global_context = global_context;
@@ -924,16 +569,16 @@ int pre_key_whisper_message_create(pre_key_whisper_message **pre_key_message,
     }
     result_message->signed_pre_key_id = signed_pre_key_id;
 
-    AXOLOTL_REF(base_key);
+    SIGNAL_REF(base_key);
     result_message->base_key = base_key;
 
-    AXOLOTL_REF(identity_key);
+    SIGNAL_REF(identity_key);
     result_message->identity_key = identity_key;
 
-    AXOLOTL_REF(message);
+    SIGNAL_REF(message);
     result_message->message = message;
 
-    result = pre_key_whisper_message_serialize(&result_message->base_message.serialized, result_message);
+    result = pre_key_signal_message_serialize(&result_message->base_message.serialized, result_message);
 
     if(result >= 0) {
         result = 0;
@@ -941,19 +586,19 @@ int pre_key_whisper_message_create(pre_key_whisper_message **pre_key_message,
     }
     else {
         if(result_message) {
-            AXOLOTL_UNREF(result_message);
+            SIGNAL_UNREF(result_message);
         }
     }
     return result;
 }
 
-static int pre_key_whisper_message_serialize(axolotl_buffer **buffer, const pre_key_whisper_message *message)
+static int pre_key_signal_message_serialize(signal_buffer **buffer, const pre_key_signal_message *message)
 {
     int result = 0;
     size_t result_size = 0;
-    axolotl_buffer *result_buf = 0;
-    Textsecure__PreKeyWhisperMessage message_structure = TEXTSECURE__PRE_KEY_WHISPER_MESSAGE__INIT;
-    axolotl_buffer *inner_message_buffer = 0;
+    signal_buffer *result_buf = 0;
+    Textsecure__PreKeySignalMessage message_structure = TEXTSECURE__PRE_KEY_SIGNAL_MESSAGE__INIT;
+    signal_buffer *inner_message_buffer = 0;
     size_t len = 0;
     uint8_t *data = 0;
 
@@ -983,25 +628,25 @@ static int pre_key_whisper_message_serialize(axolotl_buffer **buffer, const pre_
     message_structure.has_identitykey = 1;
 
     inner_message_buffer = message->message->base_message.serialized;
-    message_structure.message.data = axolotl_buffer_data(inner_message_buffer);
-    message_structure.message.len = axolotl_buffer_len(inner_message_buffer);
+    message_structure.message.data = signal_buffer_data(inner_message_buffer);
+    message_structure.message.len = signal_buffer_len(inner_message_buffer);
     message_structure.has_message = 1;
 
-    len = textsecure__pre_key_whisper_message__get_packed_size(&message_structure);
+    len = textsecure__pre_key_signal_message__get_packed_size(&message_structure);
 
-    result_buf = axolotl_buffer_alloc(len + 1);
+    result_buf = signal_buffer_alloc(len + 1);
     if(!result_buf) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    data = axolotl_buffer_data(result_buf);
+    data = signal_buffer_data(result_buf);
     data[0] = version;
 
-    result_size = textsecure__pre_key_whisper_message__pack(&message_structure, data + 1);
+    result_size = textsecure__pre_key_signal_message__pack(&message_structure, data + 1);
     if(result_size != len) {
-        axolotl_buffer_free(result_buf);
-        result = AX_ERR_INVALID_PROTO_BUF;
+        signal_buffer_free(result_buf);
+        result = SG_ERR_INVALID_PROTO_BUF;
         result_buf = 0;
         goto complete;
     }
@@ -1019,13 +664,13 @@ complete:
     return result;
 }
 
-int pre_key_whisper_message_deserialize(pre_key_whisper_message **message,
+int pre_key_signal_message_deserialize(pre_key_signal_message **message,
         const uint8_t *data, size_t len,
-        axolotl_context *global_context)
+        signal_context *global_context)
 {
     int result = 0;
-    pre_key_whisper_message *result_message = 0;
-    Textsecure__PreKeyWhisperMessage *message_structure = 0;
+    pre_key_signal_message *result_message = 0;
+    Textsecure__PreKeySignalMessage *message_structure = 0;
     uint8_t version = 0;
     const uint8_t *message_data = 0;
     size_t message_len = 0;
@@ -1034,7 +679,7 @@ int pre_key_whisper_message_deserialize(pre_key_whisper_message **message,
     assert(global_context);
 
     if(!data || len <= 1) {
-        result = AX_ERR_INVAL;
+        result = SG_ERR_INVAL;
         goto complete;
     }
 
@@ -1044,41 +689,40 @@ int pre_key_whisper_message_deserialize(pre_key_whisper_message **message,
     message_data = data + 1;
     message_len = len - 1;
 
-    if(version <= CIPHERTEXT_UNSUPPORTED_VERSION) {
-        axolotl_log(global_context, AX_LOG_WARNING, "Unsupported legacy version: %d", version);
-        result = AX_ERR_LEGACY_MESSAGE;
+    if(version < CIPHERTEXT_CURRENT_VERSION) {
+        signal_log(global_context, SG_LOG_WARNING, "Unsupported legacy version: %d", version);
+        result = SG_ERR_LEGACY_MESSAGE;
         goto complete;
     }
 
     if(version > CIPHERTEXT_CURRENT_VERSION) {
-        axolotl_log(global_context, AX_LOG_WARNING, "Unknown version: %d", version);
-        result = AX_ERR_INVALID_VERSION;
+        signal_log(global_context, SG_LOG_WARNING, "Unknown version: %d", version);
+        result = SG_ERR_INVALID_VERSION;
         goto complete;
     }
 
-    message_structure = textsecure__pre_key_whisper_message__unpack(0, message_len, message_data);
+    message_structure = textsecure__pre_key_signal_message__unpack(0, message_len, message_data);
     if(!message_structure) {
-        result = AX_ERR_INVALID_PROTO_BUF;
+        result = SG_ERR_INVALID_PROTO_BUF;
         goto complete;
     }
 
-    if((version == 2 && !message_structure->has_prekeyid) ||
-            (version == 3 && !message_structure->has_signedprekeyid) ||
+    if(!message_structure->has_signedprekeyid ||
             !message_structure->has_basekey ||
             !message_structure->has_identitykey ||
             !message_structure->has_message) {
-        axolotl_log(global_context, AX_LOG_WARNING, "Incomplete message");
-        result = AX_ERR_INVALID_MESSAGE;
+        signal_log(global_context, SG_LOG_WARNING, "Incomplete message");
+        result = SG_ERR_INVALID_MESSAGE;
         goto complete;
     }
 
-    result_message = malloc(sizeof(pre_key_whisper_message));
+    result_message = malloc(sizeof(pre_key_signal_message));
     if(!result_message) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
-    memset(result_message, 0, sizeof(pre_key_whisper_message));
-    AXOLOTL_INIT(result_message, pre_key_whisper_message_destroy);
+    memset(result_message, 0, sizeof(pre_key_signal_message));
+    SIGNAL_INIT(result_message, pre_key_signal_message_destroy);
 
     result_message->base_message.message_type = CIPHERTEXT_PREKEY_TYPE;
     result_message->base_message.global_context = global_context;
@@ -1115,7 +759,7 @@ int pre_key_whisper_message_deserialize(pre_key_whisper_message **message,
     }
 
     if(message_structure->has_message) {
-        result = whisper_message_deserialize(&result_message->message,
+        result = signal_message_deserialize(&result_message->message,
                 message_structure->message.data,
                 message_structure->message.len,
                 global_context);
@@ -1123,48 +767,48 @@ int pre_key_whisper_message_deserialize(pre_key_whisper_message **message,
             goto complete;
         }
         if(result_message->message->message_version != version) {
-            axolotl_log(global_context, AX_LOG_WARNING, "Inner message version mismatch: %d != %d",
+            signal_log(global_context, SG_LOG_WARNING, "Inner message version mismatch: %d != %d",
                     result_message->message->message_version, version);
-            result = AX_ERR_INVALID_VERSION;
+            result = SG_ERR_INVALID_VERSION;
             goto complete;
         }
     }
 
-    result_message->base_message.serialized = axolotl_buffer_alloc(len);
+    result_message->base_message.serialized = signal_buffer_alloc(len);
     if(!result_message->base_message.serialized) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
-    serialized_data = axolotl_buffer_data(result_message->base_message.serialized);
+    serialized_data = signal_buffer_data(result_message->base_message.serialized);
     memcpy(serialized_data, data, len);
 
 complete:
     if(message_structure) {
-        textsecure__pre_key_whisper_message__free_unpacked(message_structure, 0);
+        textsecure__pre_key_signal_message__free_unpacked(message_structure, 0);
     }
     if(result >= 0) {
         *message = result_message;
     }
     else {
         if(result_message) {
-            AXOLOTL_UNREF(result_message);
+            SIGNAL_UNREF(result_message);
         }
     }
     return result;
 }
 
-int pre_key_whisper_message_copy(pre_key_whisper_message **message, pre_key_whisper_message *other_message, axolotl_context *global_context)
+int pre_key_signal_message_copy(pre_key_signal_message **message, pre_key_signal_message *other_message, signal_context *global_context)
 {
     int result = 0;
-    pre_key_whisper_message *result_message = 0;
+    pre_key_signal_message *result_message = 0;
 
     assert(other_message);
     assert(global_context);
 
-    result = pre_key_whisper_message_deserialize(
+    result = pre_key_signal_message_deserialize(
             &result_message,
-            axolotl_buffer_data(other_message->base_message.serialized),
-            axolotl_buffer_len(other_message->base_message.serialized),
+            signal_buffer_data(other_message->base_message.serialized),
+            signal_buffer_len(other_message->base_message.serialized),
             global_context);
     if(result >= 0) {
         *message = result_message;
@@ -1173,65 +817,65 @@ int pre_key_whisper_message_copy(pre_key_whisper_message **message, pre_key_whis
     return result;
 }
 
-uint8_t pre_key_whisper_message_get_message_version(const pre_key_whisper_message *message)
+uint8_t pre_key_signal_message_get_message_version(const pre_key_signal_message *message)
 {
     assert(message);
     return message->version;
 }
 
-ec_public_key *pre_key_whisper_message_get_identity_key(const pre_key_whisper_message *message)
+ec_public_key *pre_key_signal_message_get_identity_key(const pre_key_signal_message *message)
 {
     assert(message);
     return message->identity_key;
 }
 
-uint32_t pre_key_whisper_message_get_registration_id(const pre_key_whisper_message *message)
+uint32_t pre_key_signal_message_get_registration_id(const pre_key_signal_message *message)
 {
     assert(message);
     return message->registration_id;
 }
 
-int pre_key_whisper_message_has_pre_key_id(const pre_key_whisper_message *message)
+int pre_key_signal_message_has_pre_key_id(const pre_key_signal_message *message)
 {
     assert(message);
     return message->has_pre_key_id;
 }
 
-uint32_t pre_key_whisper_message_get_pre_key_id(const pre_key_whisper_message *message)
+uint32_t pre_key_signal_message_get_pre_key_id(const pre_key_signal_message *message)
 {
     assert(message);
     assert(message->has_pre_key_id);
     return message->pre_key_id;
 }
 
-uint32_t pre_key_whisper_message_get_signed_pre_key_id(const pre_key_whisper_message *message)
+uint32_t pre_key_signal_message_get_signed_pre_key_id(const pre_key_signal_message *message)
 {
     assert(message);
     return message->signed_pre_key_id;
 }
 
-ec_public_key *pre_key_whisper_message_get_base_key(const pre_key_whisper_message *message)
+ec_public_key *pre_key_signal_message_get_base_key(const pre_key_signal_message *message)
 {
     assert(message);
     return message->base_key;
 }
 
-whisper_message *pre_key_whisper_message_get_whisper_message(const pre_key_whisper_message *message)
+signal_message *pre_key_signal_message_get_signal_message(const pre_key_signal_message *message)
 {
     assert(message);
     return message->message;
 }
 
-void pre_key_whisper_message_destroy(axolotl_type_base *type)
+void pre_key_signal_message_destroy(signal_type_base *type)
 {
-    pre_key_whisper_message *message = (pre_key_whisper_message *)type;
+    pre_key_signal_message *message = (pre_key_signal_message *)type;
 
     if(message->base_message.serialized) {
-        axolotl_buffer_free(message->base_message.serialized);
+        signal_buffer_free(message->base_message.serialized);
     }
-    AXOLOTL_UNREF(message->base_key);
-    AXOLOTL_UNREF(message->identity_key);
-    AXOLOTL_UNREF(message->message);
+    SIGNAL_UNREF(message->base_key);
+    SIGNAL_UNREF(message->identity_key);
+    SIGNAL_UNREF(message->message);
     free(message);
 }
 
@@ -1239,21 +883,21 @@ int sender_key_message_create(sender_key_message **message,
         uint32_t key_id, uint32_t iteration,
         const uint8_t *ciphertext, size_t ciphertext_len,
         ec_private_key *signature_key,
-        axolotl_context *global_context)
+        signal_context *global_context)
 {
     int result = 0;
     sender_key_message *result_message = 0;
-    axolotl_buffer *message_buf = 0;
+    signal_buffer *message_buf = 0;
 
     assert(global_context);
 
     result_message = malloc(sizeof(sender_key_message));
 
     if(!result_message) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
     memset(result_message, 0, sizeof(sender_key_message));
-    AXOLOTL_INIT(result_message, sender_key_message_destroy);
+    SIGNAL_INIT(result_message, sender_key_message_destroy);
 
     result_message->base_message.message_type = CIPHERTEXT_SENDERKEY_TYPE;
     result_message->base_message.global_context = global_context;
@@ -1262,9 +906,9 @@ int sender_key_message_create(sender_key_message **message,
     result_message->key_id = key_id;
     result_message->iteration = iteration;
 
-    result_message->ciphertext = axolotl_buffer_create(ciphertext, ciphertext_len);
+    result_message->ciphertext = signal_buffer_create(ciphertext, ciphertext_len);
     if(!result_message->ciphertext) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
@@ -1282,19 +926,19 @@ complete:
     }
     else {
         if(result_message) {
-            AXOLOTL_UNREF(result_message);
+            SIGNAL_UNREF(result_message);
         }
     }
     return result;
 }
 
-int sender_key_message_serialize(axolotl_buffer **buffer, const sender_key_message *message, ec_private_key *signature_key, axolotl_context *global_context)
+int sender_key_message_serialize(signal_buffer **buffer, const sender_key_message *message, ec_private_key *signature_key, signal_context *global_context)
 {
     int result = 0;
     uint8_t version = (CIPHERTEXT_CURRENT_VERSION << 4) | CIPHERTEXT_CURRENT_VERSION;
     size_t result_size = 0;
-    axolotl_buffer *result_buf = 0;
-    axolotl_buffer *signature_buf = 0;
+    signal_buffer *result_buf = 0;
+    signal_buffer *signature_buf = 0;
     Textsecure__SenderKeyMessage message_structure = TEXTSECURE__SENDER_KEY_MESSAGE__INIT;
     size_t len = 0;
     uint8_t *data = 0;
@@ -1305,25 +949,25 @@ int sender_key_message_serialize(axolotl_buffer **buffer, const sender_key_messa
     message_structure.iteration = message->iteration;
     message_structure.has_iteration = 1;
 
-    message_structure.ciphertext.data = axolotl_buffer_data(message->ciphertext);
-    message_structure.ciphertext.len = axolotl_buffer_len(message->ciphertext);
+    message_structure.ciphertext.data = signal_buffer_data(message->ciphertext);
+    message_structure.ciphertext.len = signal_buffer_len(message->ciphertext);
     message_structure.has_ciphertext = 1;
 
     len = textsecure__sender_key_message__get_packed_size(&message_structure);
 
-    result_buf = axolotl_buffer_alloc(sizeof(version) + len + SIGNATURE_LENGTH);
+    result_buf = signal_buffer_alloc(sizeof(version) + len + SIGNATURE_LENGTH);
     if(!result_buf) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    data = axolotl_buffer_data(result_buf);
+    data = signal_buffer_data(result_buf);
     data[0] = version;
 
     result_size = textsecure__sender_key_message__pack(&message_structure, data + sizeof(version));
     if(result_size != len) {
-        axolotl_buffer_free(result_buf);
-        result = AX_ERR_INVALID_PROTO_BUF;
+        signal_buffer_free(result_buf);
+        result = SG_ERR_INVALID_PROTO_BUF;
         result_buf = 0;
         goto complete;
     }
@@ -1331,32 +975,32 @@ int sender_key_message_serialize(axolotl_buffer **buffer, const sender_key_messa
     result = curve_calculate_signature(global_context, &signature_buf, signature_key,
             data, len + sizeof(version));
     if(result < 0) {
-        if(result == AX_ERR_INVALID_KEY) {
-            result = AX_ERR_UNKNOWN;
+        if(result == SG_ERR_INVALID_KEY) {
+            result = SG_ERR_UNKNOWN;
         }
         goto complete;
     }
-    else if(axolotl_buffer_len(signature_buf) != SIGNATURE_LENGTH) {
-        result = AX_ERR_UNKNOWN;
+    else if(signal_buffer_len(signature_buf) != SIGNATURE_LENGTH) {
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
-    memcpy(data + sizeof(version) + len, axolotl_buffer_data(signature_buf), SIGNATURE_LENGTH);
+    memcpy(data + sizeof(version) + len, signal_buffer_data(signature_buf), SIGNATURE_LENGTH);
 
 complete:
-    axolotl_buffer_free(signature_buf);
+    signal_buffer_free(signature_buf);
     if(result >= 0) {
         *buffer = result_buf;
     }
     else {
-        axolotl_buffer_free(result_buf);
+        signal_buffer_free(result_buf);
     }
     return result;
 }
 
 int sender_key_message_deserialize(sender_key_message **message,
         const uint8_t *data, size_t len,
-        axolotl_context *global_context)
+        signal_context *global_context)
 {
     int result = 0;
     sender_key_message *result_message = 0;
@@ -1368,7 +1012,7 @@ int sender_key_message_deserialize(sender_key_message **message,
     assert(global_context);
 
     if(!data || len <= sizeof(uint8_t) + SIGNATURE_LENGTH) {
-        result = AX_ERR_INVAL;
+        result = SG_ERR_INVAL;
         goto complete;
     }
 
@@ -1377,38 +1021,38 @@ int sender_key_message_deserialize(sender_key_message **message,
     message_len = len - sizeof(uint8_t) - SIGNATURE_LENGTH;
 
     if(version < CIPHERTEXT_CURRENT_VERSION) {
-        axolotl_log(global_context, AX_LOG_WARNING, "Legacy message: %d", version);
-        result = AX_ERR_LEGACY_MESSAGE;
+        signal_log(global_context, SG_LOG_WARNING, "Legacy message: %d", version);
+        result = SG_ERR_LEGACY_MESSAGE;
         goto complete;
     }
 
     if(version > CIPHERTEXT_CURRENT_VERSION) {
-        axolotl_log(global_context, AX_LOG_WARNING, "Unknown version: %d", version);
-        result = AX_ERR_INVALID_VERSION;
+        signal_log(global_context, SG_LOG_WARNING, "Unknown version: %d", version);
+        result = SG_ERR_INVALID_VERSION;
         goto complete;
     }
 
     message_structure = textsecure__sender_key_message__unpack(0, message_len, message_data);
     if(!message_structure) {
-        result = AX_ERR_INVALID_PROTO_BUF;
+        result = SG_ERR_INVALID_PROTO_BUF;
         goto complete;
     }
 
     if(!message_structure->has_id
             || !message_structure->has_iteration
             || !message_structure->has_ciphertext) {
-        axolotl_log(global_context, AX_LOG_WARNING, "Incomplete message");
-        result = AX_ERR_INVALID_MESSAGE;
+        signal_log(global_context, SG_LOG_WARNING, "Incomplete message");
+        result = SG_ERR_INVALID_MESSAGE;
         goto complete;
     }
 
     result_message = malloc(sizeof(sender_key_message));
     if(!result_message) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
     memset(result_message, 0, sizeof(sender_key_message));
-    AXOLOTL_INIT(result_message, sender_key_message_destroy);
+    SIGNAL_INIT(result_message, sender_key_message_destroy);
 
     result_message->base_message.message_type = CIPHERTEXT_SENDERKEY_TYPE;
     result_message->base_message.global_context = global_context;
@@ -1417,17 +1061,17 @@ int sender_key_message_deserialize(sender_key_message **message,
     result_message->iteration = message_structure->iteration;
     result_message->message_version = version;
 
-    result_message->ciphertext = axolotl_buffer_create(
+    result_message->ciphertext = signal_buffer_create(
             message_structure->ciphertext.data,
             message_structure->ciphertext.len);
     if(!result_message->ciphertext) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    result_message->base_message.serialized = axolotl_buffer_create(data, len);
+    result_message->base_message.serialized = signal_buffer_create(data, len);
     if(!result_message->base_message.serialized) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
@@ -1440,13 +1084,13 @@ complete:
     }
     else {
         if(result_message) {
-            AXOLOTL_UNREF(result_message);
+            SIGNAL_UNREF(result_message);
         }
     }
     return result;
 }
 
-int sender_key_message_copy(sender_key_message **message, sender_key_message *other_message, axolotl_context *global_context)
+int sender_key_message_copy(sender_key_message **message, sender_key_message *other_message, signal_context *global_context)
 {
     int result = 0;
     sender_key_message *result_message = 0;
@@ -1456,8 +1100,8 @@ int sender_key_message_copy(sender_key_message **message, sender_key_message *ot
 
     result = sender_key_message_deserialize(
             &result_message,
-            axolotl_buffer_data(other_message->base_message.serialized),
-            axolotl_buffer_len(other_message->base_message.serialized),
+            signal_buffer_data(other_message->base_message.serialized),
+            signal_buffer_len(other_message->base_message.serialized),
             global_context);
     if(result >= 0) {
         *message = result_message;
@@ -1478,7 +1122,7 @@ uint32_t sender_key_message_get_iteration(sender_key_message *message)
     return message->iteration;
 }
 
-axolotl_buffer *sender_key_message_get_ciphertext(sender_key_message *message)
+signal_buffer *sender_key_message_get_ciphertext(sender_key_message *message)
 {
     assert(message);
     return message->ciphertext;
@@ -1492,17 +1136,17 @@ int sender_key_message_verify_signature(sender_key_message *message, ec_public_k
 
     assert(message);
 
-    data = axolotl_buffer_data(message->base_message.serialized);
-    data_len = axolotl_buffer_len(message->base_message.serialized) - SIGNATURE_LENGTH;
+    data = signal_buffer_data(message->base_message.serialized);
+    data_len = signal_buffer_len(message->base_message.serialized) - SIGNATURE_LENGTH;
 
     result = curve_verify_signature(signature_key, data, data_len, data + data_len, SIGNATURE_LENGTH);
 
     if(result == 0) {
-        axolotl_log(message->base_message.global_context, AX_LOG_ERROR, "Invalid signature!");
-        result = AX_ERR_INVALID_MESSAGE;
+        signal_log(message->base_message.global_context, SG_LOG_ERROR, "Invalid signature!");
+        result = SG_ERR_INVALID_MESSAGE;
     }
     else if(result < 0) {
-        result = AX_ERR_INVALID_MESSAGE;
+        result = SG_ERR_INVALID_MESSAGE;
     }
     else {
         result = 0;
@@ -1511,15 +1155,15 @@ int sender_key_message_verify_signature(sender_key_message *message, ec_public_k
     return result;
 }
 
-void sender_key_message_destroy(axolotl_type_base *type)
+void sender_key_message_destroy(signal_type_base *type)
 {
     sender_key_message *message = (sender_key_message *)type;
 
     if(message->base_message.serialized) {
-        axolotl_buffer_free(message->base_message.serialized);
+        signal_buffer_free(message->base_message.serialized);
     }
     if(message->ciphertext) {
-        axolotl_buffer_free(message->ciphertext);
+        signal_buffer_free(message->ciphertext);
     }
     free(message);
 }
@@ -1528,22 +1172,22 @@ int sender_key_distribution_message_create(sender_key_distribution_message **mes
         uint32_t id, uint32_t iteration,
         const uint8_t *chain_key, size_t chain_key_len,
         ec_public_key *signature_key,
-        axolotl_context *global_context)
+        signal_context *global_context)
 {
     int result = 0;
 
     sender_key_distribution_message *result_message = 0;
-    axolotl_buffer *message_buf = 0;
+    signal_buffer *message_buf = 0;
 
     assert(global_context);
 
     result_message = malloc(sizeof(sender_key_distribution_message));
 
     if(!result_message) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
     memset(result_message, 0, sizeof(sender_key_distribution_message));
-    AXOLOTL_INIT(result_message, sender_key_distribution_message_destroy);
+    SIGNAL_INIT(result_message, sender_key_distribution_message_destroy);
 
     result_message->base_message.message_type = CIPHERTEXT_SENDERKEY_DISTRIBUTION_TYPE;
     result_message->base_message.global_context = global_context;
@@ -1551,12 +1195,12 @@ int sender_key_distribution_message_create(sender_key_distribution_message **mes
     result_message->id = id;
     result_message->iteration = iteration;
 
-    result_message->chain_key = axolotl_buffer_create(chain_key, chain_key_len);
+    result_message->chain_key = signal_buffer_create(chain_key, chain_key_len);
     if(!result_message->chain_key) {
         goto complete;
     }
 
-    AXOLOTL_REF(signature_key);
+    SIGNAL_REF(signature_key);
     result_message->signature_key = signature_key;
 
     result = sender_key_distribution_message_serialize(&message_buf, result_message);
@@ -1573,18 +1217,18 @@ complete:
     }
     else {
         if(result_message) {
-            AXOLOTL_UNREF(result_message);
+            SIGNAL_UNREF(result_message);
         }
     }
     return result;
 }
 
-int sender_key_distribution_message_serialize(axolotl_buffer **buffer, const sender_key_distribution_message *message)
+int sender_key_distribution_message_serialize(signal_buffer **buffer, const sender_key_distribution_message *message)
 {
     int result = 0;
     uint8_t version = (CIPHERTEXT_CURRENT_VERSION << 4) | CIPHERTEXT_CURRENT_VERSION;
     size_t result_size = 0;
-    axolotl_buffer *result_buf = 0;
+    signal_buffer *result_buf = 0;
     Textsecure__SenderKeyDistributionMessage message_structure = TEXTSECURE__SENDER_KEY_DISTRIBUTION_MESSAGE__INIT;
     size_t len = 0;
     uint8_t *data = 0;
@@ -1595,8 +1239,8 @@ int sender_key_distribution_message_serialize(axolotl_buffer **buffer, const sen
     message_structure.iteration = message->iteration;
     message_structure.has_iteration = 1;
 
-    message_structure.chainkey.data = axolotl_buffer_data(message->chain_key);
-    message_structure.chainkey.len = axolotl_buffer_len(message->chain_key);
+    message_structure.chainkey.data = signal_buffer_data(message->chain_key);
+    message_structure.chainkey.len = signal_buffer_len(message->chain_key);
     message_structure.has_chainkey = 1;
 
     result = ec_public_key_serialize_protobuf(&message_structure.signingkey, message->signature_key);
@@ -1607,19 +1251,19 @@ int sender_key_distribution_message_serialize(axolotl_buffer **buffer, const sen
 
     len = textsecure__sender_key_distribution_message__get_packed_size(&message_structure);
 
-    result_buf = axolotl_buffer_alloc(sizeof(version) + len);
+    result_buf = signal_buffer_alloc(sizeof(version) + len);
     if(!result_buf) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    data = axolotl_buffer_data(result_buf);
+    data = signal_buffer_data(result_buf);
     data[0] = version;
 
     result_size = textsecure__sender_key_distribution_message__pack(&message_structure, data + sizeof(version));
     if(result_size != len) {
-        axolotl_buffer_free(result_buf);
-        result = AX_ERR_INVALID_PROTO_BUF;
+        signal_buffer_free(result_buf);
+        result = SG_ERR_INVALID_PROTO_BUF;
         result_buf = 0;
         goto complete;
     }
@@ -1632,14 +1276,14 @@ complete:
         *buffer = result_buf;
     }
     else {
-        axolotl_buffer_free(result_buf);
+        signal_buffer_free(result_buf);
     }
     return result;
 }
 
 int sender_key_distribution_message_deserialize(sender_key_distribution_message **message,
         const uint8_t *data, size_t len,
-        axolotl_context *global_context)
+        signal_context *global_context)
 {
     int result = 0;
     sender_key_distribution_message *result_message = 0;
@@ -1651,7 +1295,7 @@ int sender_key_distribution_message_deserialize(sender_key_distribution_message
     assert(global_context);
 
     if(!data || len <= sizeof(uint8_t)) {
-        result = AX_ERR_INVAL;
+        result = SG_ERR_INVAL;
         goto complete;
     }
 
@@ -1660,20 +1304,20 @@ int sender_key_distribution_message_deserialize(sender_key_distribution_message
     message_len = len - sizeof(uint8_t);
 
     if(version < CIPHERTEXT_CURRENT_VERSION) {
-        axolotl_log(global_context, AX_LOG_WARNING, "Legacy message: %d", version);
-        result = AX_ERR_LEGACY_MESSAGE;
+        signal_log(global_context, SG_LOG_WARNING, "Legacy message: %d", version);
+        result = SG_ERR_LEGACY_MESSAGE;
         goto complete;
     }
 
     if(version > CIPHERTEXT_CURRENT_VERSION) {
-        axolotl_log(global_context, AX_LOG_WARNING, "Unknown version: %d", version);
-        result = AX_ERR_INVALID_VERSION;
+        signal_log(global_context, SG_LOG_WARNING, "Unknown version: %d", version);
+        result = SG_ERR_INVALID_VERSION;
         goto complete;
     }
 
     message_structure = textsecure__sender_key_distribution_message__unpack(0, message_len, message_data);
     if(!message_structure) {
-        result = AX_ERR_INVALID_PROTO_BUF;
+        result = SG_ERR_INVALID_PROTO_BUF;
         goto complete;
     }
 
@@ -1681,18 +1325,18 @@ int sender_key_distribution_message_deserialize(sender_key_distribution_message
             || !message_structure->has_iteration
             || !message_structure->has_chainkey
             || !message_structure->has_signingkey) {
-        axolotl_log(global_context, AX_LOG_WARNING, "Incomplete message");
-        result = AX_ERR_INVALID_MESSAGE;
+        signal_log(global_context, SG_LOG_WARNING, "Incomplete message");
+        result = SG_ERR_INVALID_MESSAGE;
         goto complete;
     }
 
     result_message = malloc(sizeof(sender_key_distribution_message));
     if(!result_message) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
     memset(result_message, 0, sizeof(sender_key_distribution_message));
-    AXOLOTL_INIT(result_message, sender_key_distribution_message_destroy);
+    SIGNAL_INIT(result_message, sender_key_distribution_message_destroy);
 
     result_message->base_message.message_type = CIPHERTEXT_SENDERKEY_DISTRIBUTION_TYPE;
     result_message->base_message.global_context = global_context;
@@ -1700,11 +1344,11 @@ int sender_key_distribution_message_deserialize(sender_key_distribution_message
     result_message->id = message_structure->id;
     result_message->iteration = message_structure->iteration;
 
-    result_message->chain_key = axolotl_buffer_create(
+    result_message->chain_key = signal_buffer_create(
             message_structure->chainkey.data,
             message_structure->chainkey.len);
     if(!result_message->chain_key) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
@@ -1716,9 +1360,9 @@ int sender_key_distribution_message_deserialize(sender_key_distribution_message
         goto complete;
     }
 
-    result_message->base_message.serialized = axolotl_buffer_create(data, len);
+    result_message->base_message.serialized = signal_buffer_create(data, len);
     if(!result_message->base_message.serialized) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
@@ -1731,13 +1375,13 @@ complete:
     }
     else {
         if(result_message) {
-            AXOLOTL_UNREF(result_message);
+            SIGNAL_UNREF(result_message);
         }
     }
     return result;
 }
 
-int sender_key_distribution_message_copy(sender_key_distribution_message **message, sender_key_distribution_message *other_message, axolotl_context *global_context)
+int sender_key_distribution_message_copy(sender_key_distribution_message **message, sender_key_distribution_message *other_message, signal_context *global_context)
 {
     int result = 0;
     sender_key_distribution_message *result_message = 0;
@@ -1747,8 +1391,8 @@ int sender_key_distribution_message_copy(sender_key_distribution_message **messa
 
     result = sender_key_distribution_message_deserialize(
             &result_message,
-            axolotl_buffer_data(other_message->base_message.serialized),
-            axolotl_buffer_len(other_message->base_message.serialized),
+            signal_buffer_data(other_message->base_message.serialized),
+            signal_buffer_len(other_message->base_message.serialized),
             global_context);
     if(result >= 0) {
         *message = result_message;
@@ -1769,7 +1413,7 @@ uint32_t sender_key_distribution_message_get_iteration(sender_key_distribution_m
     return message->iteration;
 }
 
-axolotl_buffer *sender_key_distribution_message_get_chain_key(sender_key_distribution_message *message)
+signal_buffer *sender_key_distribution_message_get_chain_key(sender_key_distribution_message *message)
 {
     assert(message);
     return message->chain_key;
@@ -1781,17 +1425,17 @@ ec_public_key *sender_key_distribution_message_get_signature_key(sender_key_dist
     return message->signature_key;
 }
 
-void sender_key_distribution_message_destroy(axolotl_type_base *type)
+void sender_key_distribution_message_destroy(signal_type_base *type)
 {
     sender_key_distribution_message *message = (sender_key_distribution_message *)type;
 
     if(message->base_message.serialized) {
-        axolotl_buffer_free(message->base_message.serialized);
+        signal_buffer_free(message->base_message.serialized);
     }
 
     if(message->chain_key) {
-        axolotl_buffer_free(message->chain_key);
+        signal_buffer_free(message->chain_key);
     }
-    AXOLOTL_UNREF(message->signature_key);
+    SIGNAL_UNREF(message->signature_key);
     free(message);
 }
diff --git a/libs/libaxolotl/src/protocol.h b/libs/libaxolotl/src/protocol.h
index e149ae84a1..68c3a70be6 100644
--- a/libs/libaxolotl/src/protocol.h
+++ b/libs/libaxolotl/src/protocol.h
@@ -3,7 +3,7 @@
 
 #include <stdint.h>
 #include <stddef.h>
-#include "axolotl_types.h"
+#include "signal_protocol_types.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -16,7 +16,7 @@ extern "C" {
 #define CIPHERTEXT_UNSUPPORTED_VERSION         1
 #define CIPHERTEXT_CURRENT_VERSION             3
 
-#define CIPHERTEXT_WHISPER_TYPE                2
+#define CIPHERTEXT_SIGNAL_TYPE                 2
 #define CIPHERTEXT_PREKEY_TYPE                 3
 #define CIPHERTEXT_SENDERKEY_TYPE              4
 #define CIPHERTEXT_SENDERKEY_DISTRIBUTION_TYPE 5
@@ -24,125 +24,101 @@ extern "C" {
 /* Worst case overhead. Not always accurate, but good enough for padding. */
 #define CIPHERTEXT_ENCRYPTED_MESSAGE_OVERHEAD 53
 
-int key_exchange_message_create(key_exchange_message **message,
-        uint8_t message_version, uint32_t sequence, uint32_t flags,
-        ec_public_key *base_key, uint8_t *base_key_signature,
-        ec_public_key *ratchet_key, ec_public_key *identity_key);
-
-int key_exchange_message_deserialize(key_exchange_message **message, const uint8_t *data, size_t len, axolotl_context *global_context);
-
-axolotl_buffer *key_exchange_message_get_serialized(const key_exchange_message *message);
-
-uint8_t key_exchange_message_get_version(const key_exchange_message *message);
-ec_public_key *key_exchange_message_get_base_key(const key_exchange_message *message);
-uint8_t *key_exchange_message_get_base_key_signature(key_exchange_message *message);
-ec_public_key *key_exchange_message_get_ratchet_key(const key_exchange_message *message);
-ec_public_key *key_exchange_message_get_identity_key(const key_exchange_message *message);
-int key_exchange_message_has_identity_key(const key_exchange_message *message);
-uint8_t key_exchange_message_get_max_version(const key_exchange_message *message);
-int key_exchange_message_is_response(const key_exchange_message *message);
-int key_exchange_message_is_initiate(const key_exchange_message *message);
-int key_exchange_message_is_response_for_simultaneous_initiate(const key_exchange_message *message);
-uint32_t key_exchange_message_get_flags(const key_exchange_message *message);
-uint32_t key_exchange_message_get_sequence(const key_exchange_message *message);
-
-void key_exchange_message_destroy(axolotl_type_base *type);
-
 int ciphertext_message_get_type(const ciphertext_message *message);
-axolotl_buffer *ciphertext_message_get_serialized(const ciphertext_message *message);
+signal_buffer *ciphertext_message_get_serialized(const ciphertext_message *message);
 
-int whisper_message_create(whisper_message **message, uint8_t message_version,
+int signal_message_create(signal_message **message, uint8_t message_version,
         const uint8_t *mac_key, size_t mac_key_len,
         ec_public_key *sender_ratchet_key, uint32_t counter, uint32_t previous_counter,
         const uint8_t *ciphertext, size_t ciphertext_len,
         ec_public_key *sender_identity_key, ec_public_key *receiver_identity_key,
-        axolotl_context *global_context);
+        signal_context *global_context);
 
-int whisper_message_deserialize(whisper_message **message, const uint8_t *data, size_t len,
-        axolotl_context *global_context);
+int signal_message_deserialize(signal_message **message, const uint8_t *data, size_t len,
+        signal_context *global_context);
 
-int whisper_message_copy(whisper_message **message, whisper_message *other_message, axolotl_context *global_context);
+int signal_message_copy(signal_message **message, signal_message *other_message, signal_context *global_context);
 
-ec_public_key *whisper_message_get_sender_ratchet_key(const whisper_message *message);
+ec_public_key *signal_message_get_sender_ratchet_key(const signal_message *message);
 
-uint8_t whisper_message_get_message_version(const whisper_message *message);
+uint8_t signal_message_get_message_version(const signal_message *message);
 
-uint32_t whisper_message_get_counter(const whisper_message *message);
+uint32_t signal_message_get_counter(const signal_message *message);
 
-axolotl_buffer *whisper_message_get_body(const whisper_message *message);
+signal_buffer *signal_message_get_body(const signal_message *message);
 
 /**
- * Verify the MAC on the Whisper message.
+ * Verify the MAC on the Signal message.
  *
  * @return 1 if verified, 0 if invalid, negative on error
  */
-int whisper_message_verify_mac(whisper_message *message,
+int signal_message_verify_mac(signal_message *message,
         uint8_t message_version,
         ec_public_key *sender_identity_key,
         ec_public_key *receiver_identity_key,
         const uint8_t *mac_key, size_t mac_key_len,
-        axolotl_context *global_context);
+        signal_context *global_context);
 
-int whisper_message_is_legacy(const uint8_t *data, size_t len);
+int signal_message_is_legacy(const uint8_t *data, size_t len);
 
-void whisper_message_destroy(axolotl_type_base *type);
+void signal_message_destroy(signal_type_base *type);
 
-int pre_key_whisper_message_create(pre_key_whisper_message **pre_key_message,
+int pre_key_signal_message_create(pre_key_signal_message **pre_key_message,
         uint8_t message_version, uint32_t registration_id, const uint32_t *pre_key_id,
         uint32_t signed_pre_key_id, ec_public_key *base_key, ec_public_key *identity_key,
-        whisper_message *message,
-        axolotl_context *global_context);
+        signal_message *message,
+        signal_context *global_context);
 
-int pre_key_whisper_message_deserialize(pre_key_whisper_message **message,
+int pre_key_signal_message_deserialize(pre_key_signal_message **message,
         const uint8_t *data, size_t len,
-        axolotl_context *global_context);
+        signal_context *global_context);
 
-int pre_key_whisper_message_copy(pre_key_whisper_message **message, pre_key_whisper_message *other_message, axolotl_context *global_context);
+int pre_key_signal_message_copy(pre_key_signal_message **message, pre_key_signal_message *other_message, signal_context *global_context);
 
-uint8_t pre_key_whisper_message_get_message_version(const pre_key_whisper_message *message);
-ec_public_key *pre_key_whisper_message_get_identity_key(const pre_key_whisper_message *message);
-uint32_t pre_key_whisper_message_get_registration_id(const pre_key_whisper_message *message);
-int pre_key_whisper_message_has_pre_key_id(const pre_key_whisper_message *message);
-uint32_t pre_key_whisper_message_get_pre_key_id(const pre_key_whisper_message *message);
-uint32_t pre_key_whisper_message_get_signed_pre_key_id(const pre_key_whisper_message *message);
-ec_public_key *pre_key_whisper_message_get_base_key(const pre_key_whisper_message *message);
-whisper_message *pre_key_whisper_message_get_whisper_message(const pre_key_whisper_message *message);
+uint8_t pre_key_signal_message_get_message_version(const pre_key_signal_message *message);
+ec_public_key *pre_key_signal_message_get_identity_key(const pre_key_signal_message *message);
+uint32_t pre_key_signal_message_get_registration_id(const pre_key_signal_message *message);
+int pre_key_signal_message_has_pre_key_id(const pre_key_signal_message *message);
+uint32_t pre_key_signal_message_get_pre_key_id(const pre_key_signal_message *message);
+uint32_t pre_key_signal_message_get_signed_pre_key_id(const pre_key_signal_message *message);
+ec_public_key *pre_key_signal_message_get_base_key(const pre_key_signal_message *message);
+signal_message *pre_key_signal_message_get_signal_message(const pre_key_signal_message *message);
 
-void pre_key_whisper_message_destroy(axolotl_type_base *type);
+void pre_key_signal_message_destroy(signal_type_base *type);
 
 int sender_key_message_create(sender_key_message **message,
         uint32_t key_id, uint32_t iteration,
         const uint8_t *ciphertext, size_t ciphertext_len,
         ec_private_key *signature_key,
-        axolotl_context *global_context);
+        signal_context *global_context);
 int sender_key_message_deserialize(sender_key_message **message,
         const uint8_t *data, size_t len,
-        axolotl_context *global_context);
-int sender_key_message_copy(sender_key_message **message, sender_key_message *other_message, axolotl_context *global_context);
+        signal_context *global_context);
+int sender_key_message_copy(sender_key_message **message, sender_key_message *other_message, signal_context *global_context);
 
 uint32_t sender_key_message_get_key_id(sender_key_message *message);
 uint32_t sender_key_message_get_iteration(sender_key_message *message);
-axolotl_buffer *sender_key_message_get_ciphertext(sender_key_message *message);
+signal_buffer *sender_key_message_get_ciphertext(sender_key_message *message);
 int sender_key_message_verify_signature(sender_key_message *message, ec_public_key *signature_key);
 
-void sender_key_message_destroy(axolotl_type_base *type);
+void sender_key_message_destroy(signal_type_base *type);
 
 int sender_key_distribution_message_create(sender_key_distribution_message **message,
         uint32_t id, uint32_t iteration,
         const uint8_t *chain_key, size_t chain_key_len,
         ec_public_key *signature_key,
-        axolotl_context *global_context);
+        signal_context *global_context);
 int sender_key_distribution_message_deserialize(sender_key_distribution_message **message,
         const uint8_t *data, size_t len,
-        axolotl_context *global_context);
-int sender_key_distribution_message_copy(sender_key_distribution_message **message, sender_key_distribution_message *other_message, axolotl_context *global_context);
+        signal_context *global_context);
+int sender_key_distribution_message_copy(sender_key_distribution_message **message, sender_key_distribution_message *other_message, signal_context *global_context);
 
 uint32_t sender_key_distribution_message_get_id(sender_key_distribution_message *message);
 uint32_t sender_key_distribution_message_get_iteration(sender_key_distribution_message *message);
-axolotl_buffer *sender_key_distribution_message_get_chain_key(sender_key_distribution_message *message);
+signal_buffer *sender_key_distribution_message_get_chain_key(sender_key_distribution_message *message);
 ec_public_key *sender_key_distribution_message_get_signature_key(sender_key_distribution_message *message);
 
-void sender_key_distribution_message_destroy(axolotl_type_base *type);
+void sender_key_distribution_message_destroy(signal_type_base *type);
 
 #ifdef __cplusplus
 }
diff --git a/libs/libaxolotl/src/ratchet.c b/libs/libaxolotl/src/ratchet.c
index 8b0dc87bec..bf65ee3e8b 100644..100755
--- a/libs/libaxolotl/src/ratchet.c
+++ b/libs/libaxolotl/src/ratchet.c
@@ -6,20 +6,21 @@
 #include <assert.h>
 #include "protobuf-c/protobuf-c.h"
 
-#include "axolotl_internal.h"
 #include "hkdf.h"
 #include "curve.h"
 #include "session_state.h"
+#include "protocol.h"
 #include "vpool.h"
 #include "LocalStorageProtocol.pb-c.h"
+#include "signal_protocol_internal.h"
 
 #define HASH_OUTPUT_SIZE 32
 #define DERIVED_MESSAGE_SECRETS_SIZE 80
 #define DERIVED_ROOT_SECRETS_SIZE 64
 
 struct ratchet_chain_key {
-    axolotl_type_base base;
-    axolotl_context *global_context;
+    signal_type_base base;
+    signal_context *global_context;
     hkdf_context *kdf;
     uint8_t *key;
     size_t key_len;
@@ -27,62 +28,62 @@ struct ratchet_chain_key {
 };
 
 struct ratchet_root_key {
-    axolotl_type_base base;
-    axolotl_context *global_context;
+    signal_type_base base;
+    signal_context *global_context;
     hkdf_context *kdf;
     uint8_t *key;
     size_t key_len;
 };
 
 struct ratchet_identity_key_pair {
-    axolotl_type_base base;
+    signal_type_base base;
     ec_public_key *public_key;
     ec_private_key *private_key;
 };
 
-int ratchet_chain_key_create(ratchet_chain_key **chain_key, hkdf_context *kdf, uint8_t *key, size_t key_len, uint32_t index, axolotl_context *global_context)
+int ratchet_chain_key_create(ratchet_chain_key **chain_key, hkdf_context *kdf, const uint8_t *key, size_t key_len, uint32_t index, signal_context *global_context)
 {
     ratchet_chain_key *result = 0;
 
     if(!kdf || !key) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
 
     result = malloc(sizeof(ratchet_chain_key));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
-    AXOLOTL_INIT(result, ratchet_chain_key_destroy);
+    SIGNAL_INIT(result, ratchet_chain_key_destroy);
     result->global_context = global_context;
     result->kdf = kdf;
 
     result->key = malloc(key_len);
     if(!result->key) {
         free(result);
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
     memcpy(result->key, key, key_len);
     result->key_len = key_len;
 
     result->index = index;
-    AXOLOTL_REF(result->kdf);
+    SIGNAL_REF(result->kdf);
     *chain_key = result;
 
     return 0;
 }
 
-int ratchet_chain_key_get_key(const ratchet_chain_key *chain_key, axolotl_buffer **buffer)
+int ratchet_chain_key_get_key(const ratchet_chain_key *chain_key, signal_buffer **buffer)
 {
-    axolotl_buffer *buf = 0;
+    signal_buffer *buf = 0;
     uint8_t *data = 0;
     
-    buf = axolotl_buffer_alloc(chain_key->key_len);
+    buf = signal_buffer_alloc(chain_key->key_len);
     if(!buf) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
-    data = axolotl_buffer_data(buf);
+    data = signal_buffer_data(buf);
     memcpy(data, chain_key->key, chain_key->key_len);
 
     *buffer = buf;
@@ -99,7 +100,7 @@ int ratchet_chain_key_get_key_protobuf(const ratchet_chain_key *chain_key, Proto
 
     data = malloc(chain_key->key_len);
     if(!data) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
     memcpy(data, chain_key->key, chain_key->key_len);
@@ -117,38 +118,38 @@ uint32_t ratchet_chain_key_get_index(const ratchet_chain_key *chain_key)
 ssize_t ratchet_chain_key_get_base_material(const ratchet_chain_key *chain_key, uint8_t **material, const uint8_t *seed, size_t seed_len)
 {
     int result = 0;
-    axolotl_buffer *output_buffer = 0;
+    signal_buffer *output_buffer = 0;
     uint8_t *output = 0;
     size_t output_len = 0;
 
     void *hmac_context = 0;
-    result = axolotl_hmac_sha256_init(chain_key->global_context, &hmac_context, chain_key->key, chain_key->key_len);
+    result = signal_hmac_sha256_init(chain_key->global_context, &hmac_context, chain_key->key, chain_key->key_len);
     if(result < 0) {
         goto complete;
     }
 
-    result = axolotl_hmac_sha256_update(chain_key->global_context, hmac_context, seed, seed_len);
+    result = signal_hmac_sha256_update(chain_key->global_context, hmac_context, seed, seed_len);
     if(result < 0) {
         goto complete;
     }
 
-    result = axolotl_hmac_sha256_final(chain_key->global_context, hmac_context, &output_buffer);
+    result = signal_hmac_sha256_final(chain_key->global_context, hmac_context, &output_buffer);
     if(result < 0) {
         goto complete;
     }
 
-    output_len = axolotl_buffer_len(output_buffer);
+    output_len = signal_buffer_len(output_buffer);
     output = malloc(output_len);
     if(!output) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    memcpy(output, axolotl_buffer_data(output_buffer), output_len);
+    memcpy(output, signal_buffer_data(output_buffer), output_len);
 
 complete:
-    axolotl_hmac_sha256_cleanup(chain_key->global_context, hmac_context);
-    axolotl_buffer_free(output_buffer);
+    signal_hmac_sha256_cleanup(chain_key->global_context, hmac_context);
+    signal_buffer_free(output_buffer);
 
     if(result >= 0) {
         *material = output;
@@ -176,7 +177,7 @@ int ratchet_chain_key_get_message_keys(ratchet_chain_key *chain_key, ratchet_mes
     result_size = ratchet_chain_key_get_base_material(chain_key, &input_key_material, &message_key_seed, sizeof(message_key_seed));
     if(result_size < 0) {
         result = (int)result_size;
-        axolotl_log(chain_key->global_context, AX_LOG_WARNING, "ratchet_chain_key_get_base_material failed");
+        signal_log(chain_key->global_context, SG_LOG_WARNING, "ratchet_chain_key_get_base_material failed");
         goto complete;
     }
     input_key_material_len = (size_t)result_size;
@@ -191,16 +192,16 @@ int ratchet_chain_key_get_message_keys(ratchet_chain_key *chain_key, ratchet_mes
             DERIVED_MESSAGE_SECRETS_SIZE);
     if(result_size < 0) {
         result = (int)result_size;
-        axolotl_log(chain_key->global_context, AX_LOG_WARNING, "hkdf_derive_secrets failed");
+        signal_log(chain_key->global_context, SG_LOG_WARNING, "hkdf_derive_secrets failed");
         goto complete;
     }
     key_material_data_len = (size_t)result_size;
 
     if(key_material_data_len != RATCHET_CIPHER_KEY_LENGTH + RATCHET_MAC_KEY_LENGTH + RATCHET_IV_LENGTH) {
-        axolotl_log(chain_key->global_context, AX_LOG_WARNING,
+        signal_log(chain_key->global_context, SG_LOG_WARNING,
                 "key_material_data length mismatch: %d != %d",
                 key_material_data_len, (RATCHET_CIPHER_KEY_LENGTH + RATCHET_MAC_KEY_LENGTH + RATCHET_IV_LENGTH));
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
@@ -235,7 +236,7 @@ int ratchet_chain_key_create_next(const ratchet_chain_key *chain_key, ratchet_ch
     result_size = ratchet_chain_key_get_base_material(chain_key, &next_key, &chain_key_seed, sizeof(chain_key_seed));
     if(result_size < 0) {
         result = (int)result_size;
-        axolotl_log(chain_key->global_context, AX_LOG_WARNING, "ratchet_chain_key_get_base_material failed");
+        signal_log(chain_key->global_context, SG_LOG_WARNING, "ratchet_chain_key_get_base_material failed");
         goto complete;
     }
     next_key_len = (size_t)result_size;
@@ -255,42 +256,42 @@ complete:
     return result;
 }
 
-void ratchet_chain_key_destroy(axolotl_type_base *type)
+void ratchet_chain_key_destroy(signal_type_base *type)
 {
     ratchet_chain_key *chain_key = (ratchet_chain_key *)type;
-    AXOLOTL_UNREF(chain_key->kdf);
+    SIGNAL_UNREF(chain_key->kdf);
     if(chain_key->key) {
-        axolotl_explicit_bzero(chain_key->key, chain_key->key_len);
+        signal_explicit_bzero(chain_key->key, chain_key->key_len);
         free(chain_key->key);
     }
     free(chain_key);
 }
 
-int ratchet_root_key_create(ratchet_root_key **root_key, hkdf_context *kdf, const uint8_t *key, size_t key_len, axolotl_context *global_context)
+int ratchet_root_key_create(ratchet_root_key **root_key, hkdf_context *kdf, const uint8_t *key, size_t key_len, signal_context *global_context)
 {
     ratchet_root_key *result = 0;
 
     if(!kdf || !key) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
 
     result = malloc(sizeof(ratchet_root_key));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
-    AXOLOTL_INIT(result, ratchet_root_key_destroy);
+    SIGNAL_INIT(result, ratchet_root_key_destroy);
     result->global_context = global_context;
     result->kdf = kdf;
 
     result->key = malloc(key_len);
     if(!result->key) {
         free(result);
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
     memcpy(result->key, key, key_len);
     result->key_len = key_len;
-    AXOLOTL_REF(result->kdf);
+    SIGNAL_REF(result->kdf);
     *root_key = result;
 
     return 0;
@@ -311,12 +312,12 @@ int ratchet_root_key_create_chain(ratchet_root_key *root_key,
     ratchet_chain_key *new_chain_key_result = 0;
 
     if(!their_ratchet_key || !our_ratchet_key_private) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
 
     result = curve_calculate_agreement(&shared_secret, their_ratchet_key, our_ratchet_key_private);
     if(result < 0) {
-        axolotl_log(root_key->global_context, AX_LOG_WARNING, "curve_calculate_agreement failed");
+        signal_log(root_key->global_context, SG_LOG_WARNING, "curve_calculate_agreement failed");
         goto complete;
     }
     shared_secret_len = (size_t)result;
@@ -328,12 +329,12 @@ int ratchet_root_key_create_chain(ratchet_root_key *root_key,
             DERIVED_ROOT_SECRETS_SIZE);
     if(result_size < 0) {
         result = (int)result_size;
-        axolotl_log(root_key->global_context, AX_LOG_WARNING, "hkdf_derive_secrets failed");
+        signal_log(root_key->global_context, SG_LOG_WARNING, "hkdf_derive_secrets failed");
         goto complete;
     }
     else if(result_size != DERIVED_ROOT_SECRETS_SIZE) {
-        result = AX_ERR_UNKNOWN;
-        axolotl_log(root_key->global_context, AX_LOG_WARNING, "hkdf_derive_secrets size mismatch");
+        result = SG_ERR_UNKNOWN;
+        signal_log(root_key->global_context, SG_LOG_WARNING, "hkdf_derive_secrets size mismatch");
         goto complete;
     }
 
@@ -341,7 +342,7 @@ int ratchet_root_key_create_chain(ratchet_root_key *root_key,
             derived_secret, 32,
             root_key->global_context);
     if(result < 0) {
-        axolotl_log(root_key->global_context, AX_LOG_WARNING, "ratchet_root_key_create failed");
+        signal_log(root_key->global_context, SG_LOG_WARNING, "ratchet_root_key_create failed");
         goto complete;
     }
 
@@ -349,7 +350,7 @@ int ratchet_root_key_create_chain(ratchet_root_key *root_key,
             derived_secret + 32, 32, 0,
             root_key->global_context);
     if(result < 0) {
-        axolotl_log(root_key->global_context, AX_LOG_WARNING, "ratchet_chain_key_create failed");
+        signal_log(root_key->global_context, SG_LOG_WARNING, "ratchet_chain_key_create failed");
         goto complete;
     }
 
@@ -362,10 +363,10 @@ complete:
     }
     if(result < 0) {
         if(new_root_key_result) {
-            AXOLOTL_UNREF(new_root_key_result);
+            SIGNAL_UNREF(new_root_key_result);
         }
         if(new_chain_key_result) {
-            AXOLOTL_UNREF(new_chain_key_result);
+            SIGNAL_UNREF(new_chain_key_result);
         }
         return result;
     }
@@ -376,19 +377,19 @@ complete:
     }
 }
 
-int ratchet_root_key_get_key(ratchet_root_key *root_key, axolotl_buffer **buffer)
+int ratchet_root_key_get_key(ratchet_root_key *root_key, signal_buffer **buffer)
 {
-    axolotl_buffer *buf = 0;
+    signal_buffer *buf = 0;
     uint8_t *data = 0;
 
     assert(root_key);
     
-    buf = axolotl_buffer_alloc(root_key->key_len);
+    buf = signal_buffer_alloc(root_key->key_len);
     if(!buf) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
-    data = axolotl_buffer_data(buf);
+    data = signal_buffer_data(buf);
     memcpy(data, root_key->key, root_key->key_len);
 
     *buffer = buf;
@@ -405,7 +406,7 @@ int ratchet_root_key_get_key_protobuf(const ratchet_root_key *root_key, Protobuf
 
     data = malloc(root_key->key_len);
     if(!data) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
     memcpy(data, root_key->key, root_key->key_len);
@@ -438,17 +439,17 @@ int ratchet_root_key_compare(const ratchet_root_key *key1, const ratchet_root_ke
             return 1;
         }
         else {
-            return axolotl_constant_memcmp(key1->key, key2->key, key1->key_len);
+            return signal_constant_memcmp(key1->key, key2->key, key1->key_len);
         }
     }
 }
 
-void ratchet_root_key_destroy(axolotl_type_base *type)
+void ratchet_root_key_destroy(signal_type_base *type)
 {
     ratchet_root_key *root_key = (ratchet_root_key *)type;
-    AXOLOTL_UNREF(root_key->kdf);
+    SIGNAL_UNREF(root_key->kdf);
     if(root_key->key) {
-        axolotl_explicit_bzero(root_key->key, root_key->key_len);
+        signal_explicit_bzero(root_key->key, root_key->key_len);
         free(root_key->key);
     }
     free(root_key);
@@ -461,12 +462,12 @@ int ratchet_identity_key_pair_create(
 {
     ratchet_identity_key_pair *result = malloc(sizeof(ratchet_identity_key_pair));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
-    AXOLOTL_INIT(result, ratchet_identity_key_pair_destroy);
-    AXOLOTL_REF(public_key);
-    AXOLOTL_REF(private_key);
+    SIGNAL_INIT(result, ratchet_identity_key_pair_destroy);
+    SIGNAL_REF(public_key);
+    SIGNAL_REF(private_key);
     result->public_key = public_key;
     result->private_key = private_key;
 
@@ -475,15 +476,20 @@ int ratchet_identity_key_pair_create(
     return 0;
 }
 
-int ratchet_identity_key_pair_serialize(axolotl_buffer **buffer, const ratchet_identity_key_pair *key_pair)
+int ratchet_identity_key_pair_serialize(signal_buffer **buffer, const ratchet_identity_key_pair *key_pair)
 {
     int result = 0;
     size_t result_size = 0;
-    axolotl_buffer *result_buf = 0;
+    signal_buffer *result_buf = 0;
     Textsecure__IdentityKeyPairStructure key_structure = TEXTSECURE__IDENTITY_KEY_PAIR_STRUCTURE__INIT;
     size_t len = 0;
     uint8_t *data = 0;
 
+    if(!key_pair) {
+        result = SG_ERR_INVAL;
+        goto complete;
+    }
+
     result = ec_public_key_serialize_protobuf(&key_structure.publickey, key_pair->public_key);
     if(result < 0) {
         goto complete;
@@ -497,17 +503,17 @@ int ratchet_identity_key_pair_serialize(axolotl_buffer **buffer, const ratchet_i
     key_structure.has_privatekey = 1;
 
     len = textsecure__identity_key_pair_structure__get_packed_size(&key_structure);
-    result_buf = axolotl_buffer_alloc(len);
+    result_buf = signal_buffer_alloc(len);
     if(!result_buf) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    data = axolotl_buffer_data(result_buf);
+    data = signal_buffer_data(result_buf);
     result_size = textsecure__identity_key_pair_structure__pack(&key_structure, data);
     if(result_size != len) {
-        axolotl_buffer_free(result_buf);
-        result = AX_ERR_INVALID_PROTO_BUF;
+        signal_buffer_free(result_buf);
+        result = SG_ERR_INVALID_PROTO_BUF;
         result_buf = 0;
         goto complete;
     }
@@ -526,7 +532,7 @@ complete:
     return result;
 }
 
-int ratchet_identity_key_pair_deserialize(ratchet_identity_key_pair **key_pair, const uint8_t *data, size_t len, axolotl_context *global_context)
+int ratchet_identity_key_pair_deserialize(ratchet_identity_key_pair **key_pair, const uint8_t *data, size_t len, signal_context *global_context)
 {
     int result = 0;
     ec_public_key *public_key = 0;
@@ -536,12 +542,12 @@ int ratchet_identity_key_pair_deserialize(ratchet_identity_key_pair **key_pair,
 
     key_structure = textsecure__identity_key_pair_structure__unpack(0, len, data);
     if(!key_structure) {
-        result = AX_ERR_INVALID_PROTO_BUF;
+        result = SG_ERR_INVALID_PROTO_BUF;
         goto complete;
     }
 
     if(!key_structure->has_publickey || !key_structure->has_privatekey) {
-        result = AX_ERR_INVALID_KEY;
+        result = SG_ERR_INVALID_KEY;
         goto complete;
     }
 
@@ -567,8 +573,8 @@ int ratchet_identity_key_pair_deserialize(ratchet_identity_key_pair **key_pair,
             public_key, private_key);
 
 complete:
-    AXOLOTL_UNREF(public_key);
-    AXOLOTL_UNREF(private_key);
+    SIGNAL_UNREF(public_key);
+    SIGNAL_UNREF(private_key);
     if(key_structure) {
         textsecure__identity_key_pair_structure__free_unpacked(key_structure, 0);
     }
@@ -592,17 +598,17 @@ ec_private_key *ratchet_identity_key_pair_get_private(const ratchet_identity_key
     return key_pair->private_key;
 }
 
-void ratchet_identity_key_pair_destroy(axolotl_type_base *type)
+void ratchet_identity_key_pair_destroy(signal_type_base *type)
 {
     ratchet_identity_key_pair *key_pair = (ratchet_identity_key_pair *)type;
-    AXOLOTL_UNREF(key_pair->public_key);
-    AXOLOTL_UNREF(key_pair->private_key);
+    SIGNAL_UNREF(key_pair->public_key);
+    SIGNAL_UNREF(key_pair->private_key);
     free(key_pair);
 }
 
-struct symmetric_axolotl_parameters
+struct symmetric_signal_protocol_parameters
 {
-    axolotl_type_base base;
+    signal_type_base base;
     ratchet_identity_key_pair *our_identity_key;
     ec_key_pair *our_base_key;
     ec_key_pair *our_ratchet_key;
@@ -611,9 +617,9 @@ struct symmetric_axolotl_parameters
     ec_public_key *their_identity_key;
 };
 
-struct alice_axolotl_parameters
+struct alice_signal_protocol_parameters
 {
-    axolotl_type_base base;
+    signal_type_base base;
     ratchet_identity_key_pair *our_identity_key;
     ec_key_pair *our_base_key;
     ec_public_key *their_identity_key;
@@ -622,9 +628,9 @@ struct alice_axolotl_parameters
     ec_public_key *their_ratchet_key;
 };
 
-struct bob_axolotl_parameters
+struct bob_signal_protocol_parameters
 {
-    axolotl_type_base base;
+    signal_type_base base;
     ratchet_identity_key_pair *our_identity_key;
     ec_key_pair *our_signed_pre_key;
     ec_key_pair *our_one_time_pre_key; /* optional */
@@ -633,8 +639,8 @@ struct bob_axolotl_parameters
     ec_public_key *their_base_key;
 };
 
-int symmetric_axolotl_parameters_create(
-        symmetric_axolotl_parameters **parameters,
+int symmetric_signal_protocol_parameters_create(
+        symmetric_signal_protocol_parameters **parameters,
         ratchet_identity_key_pair *our_identity_key,
         ec_key_pair *our_base_key,
         ec_key_pair *our_ratchet_key,
@@ -642,27 +648,27 @@ int symmetric_axolotl_parameters_create(
         ec_public_key *their_ratchet_key,
         ec_public_key *their_identity_key)
 {
-    symmetric_axolotl_parameters *result = 0;
+    symmetric_signal_protocol_parameters *result = 0;
     
     if(!our_identity_key || !our_base_key || !our_ratchet_key
             || !their_base_key || !their_ratchet_key || !their_identity_key) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
 
-    result = malloc(sizeof(symmetric_axolotl_parameters));
+    result = malloc(sizeof(symmetric_signal_protocol_parameters));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
-    memset(result, 0, sizeof(symmetric_axolotl_parameters));
+    memset(result, 0, sizeof(symmetric_signal_protocol_parameters));
 
-    AXOLOTL_INIT(result, symmetric_axolotl_parameters_destroy);
-    AXOLOTL_REF(our_identity_key);
-    AXOLOTL_REF(our_base_key);
-    AXOLOTL_REF(our_ratchet_key);
-    AXOLOTL_REF(their_base_key);
-    AXOLOTL_REF(their_ratchet_key);
-    AXOLOTL_REF(their_identity_key);
+    SIGNAL_INIT(result, symmetric_signal_protocol_parameters_destroy);
+    SIGNAL_REF(our_identity_key);
+    SIGNAL_REF(our_base_key);
+    SIGNAL_REF(our_ratchet_key);
+    SIGNAL_REF(their_base_key);
+    SIGNAL_REF(their_ratchet_key);
+    SIGNAL_REF(their_identity_key);
     result->our_identity_key = our_identity_key;
     result->our_base_key = our_base_key;
     result->our_ratchet_key = our_ratchet_key;
@@ -674,58 +680,58 @@ int symmetric_axolotl_parameters_create(
     return 0;
 }
 
-ratchet_identity_key_pair *symmetric_axolotl_parameters_get_our_identity_key(const symmetric_axolotl_parameters *parameters)
+ratchet_identity_key_pair *symmetric_signal_protocol_parameters_get_our_identity_key(const symmetric_signal_protocol_parameters *parameters)
 {
     assert(parameters);
     return parameters->our_identity_key;
 }
 
-ec_key_pair *symmetric_axolotl_parameters_get_our_base_key(const symmetric_axolotl_parameters *parameters)
+ec_key_pair *symmetric_signal_protocol_parameters_get_our_base_key(const symmetric_signal_protocol_parameters *parameters)
 {
     assert(parameters);
     return parameters->our_base_key;
 }
 
-ec_key_pair *symmetric_axolotl_parameters_get_our_ratchet_key(const symmetric_axolotl_parameters *parameters)
+ec_key_pair *symmetric_signal_protocol_parameters_get_our_ratchet_key(const symmetric_signal_protocol_parameters *parameters)
 {
     assert(parameters);
     return parameters->our_ratchet_key;
 }
 
-ec_public_key *symmetric_axolotl_parameters_get_their_base_key(const symmetric_axolotl_parameters *parameters)
+ec_public_key *symmetric_signal_protocol_parameters_get_their_base_key(const symmetric_signal_protocol_parameters *parameters)
 {
     assert(parameters);
     return parameters->their_base_key;
 }
 
-ec_public_key *symmetric_axolotl_parameters_get_their_ratchet_key(const symmetric_axolotl_parameters *parameters)
+ec_public_key *symmetric_signal_protocol_parameters_get_their_ratchet_key(const symmetric_signal_protocol_parameters *parameters)
 {
     assert(parameters);
     return parameters->their_ratchet_key;
 }
 
-ec_public_key *symmetric_axolotl_parameters_get_their_identity_key(const symmetric_axolotl_parameters *parameters)
+ec_public_key *symmetric_signal_protocol_parameters_get_their_identity_key(const symmetric_signal_protocol_parameters *parameters)
 {
     assert(parameters);
     return parameters->their_identity_key;
 }
 
-void symmetric_axolotl_parameters_destroy(axolotl_type_base *type)
+void symmetric_signal_protocol_parameters_destroy(signal_type_base *type)
 {
-    symmetric_axolotl_parameters *parameters = (symmetric_axolotl_parameters *)type;
+    symmetric_signal_protocol_parameters *parameters = (symmetric_signal_protocol_parameters *)type;
 
-    AXOLOTL_UNREF(parameters->our_identity_key);
-    AXOLOTL_UNREF(parameters->our_base_key);
-    AXOLOTL_UNREF(parameters->our_ratchet_key);
-    AXOLOTL_UNREF(parameters->their_base_key);
-    AXOLOTL_UNREF(parameters->their_ratchet_key);
-    AXOLOTL_UNREF(parameters->their_identity_key);
+    SIGNAL_UNREF(parameters->our_identity_key);
+    SIGNAL_UNREF(parameters->our_base_key);
+    SIGNAL_UNREF(parameters->our_ratchet_key);
+    SIGNAL_UNREF(parameters->their_base_key);
+    SIGNAL_UNREF(parameters->their_ratchet_key);
+    SIGNAL_UNREF(parameters->their_identity_key);
 
     free(parameters);
 }
 
-int alice_axolotl_parameters_create(
-        alice_axolotl_parameters **parameters,
+int alice_signal_protocol_parameters_create(
+        alice_signal_protocol_parameters **parameters,
         ratchet_identity_key_pair *our_identity_key,
         ec_key_pair *our_base_key,
         ec_public_key *their_identity_key,
@@ -733,27 +739,27 @@ int alice_axolotl_parameters_create(
         ec_public_key *their_one_time_pre_key,
         ec_public_key *their_ratchet_key)
 {
-    alice_axolotl_parameters *result = 0;
+    alice_signal_protocol_parameters *result = 0;
 
     /* Only "their_one_time_pre_key" is allowed to be null */
     if(!our_identity_key || !our_base_key || !their_identity_key
             || !their_signed_pre_key || !their_ratchet_key) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
 
-    result = malloc(sizeof(alice_axolotl_parameters));
+    result = malloc(sizeof(alice_signal_protocol_parameters));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
-    memset(result, 0, sizeof(alice_axolotl_parameters));
+    memset(result, 0, sizeof(alice_signal_protocol_parameters));
 
-    AXOLOTL_INIT(result, alice_axolotl_parameters_destroy);
-    AXOLOTL_REF(our_identity_key);
-    AXOLOTL_REF(our_base_key);
-    AXOLOTL_REF(their_identity_key);
-    AXOLOTL_REF(their_signed_pre_key);
-    AXOLOTL_REF(their_ratchet_key);
+    SIGNAL_INIT(result, alice_signal_protocol_parameters_destroy);
+    SIGNAL_REF(our_identity_key);
+    SIGNAL_REF(our_base_key);
+    SIGNAL_REF(their_identity_key);
+    SIGNAL_REF(their_signed_pre_key);
+    SIGNAL_REF(their_ratchet_key);
     result->our_identity_key = our_identity_key;
     result->our_base_key = our_base_key;
     result->their_identity_key = their_identity_key;
@@ -761,7 +767,7 @@ int alice_axolotl_parameters_create(
     result->their_ratchet_key = their_ratchet_key;
 
     if(their_one_time_pre_key) {
-        AXOLOTL_REF(their_one_time_pre_key);
+        SIGNAL_REF(their_one_time_pre_key);
         result->their_one_time_pre_key = their_one_time_pre_key;
     }
 
@@ -769,25 +775,25 @@ int alice_axolotl_parameters_create(
     return 0;
 }
 
-void alice_axolotl_parameters_destroy(axolotl_type_base *type)
+void alice_signal_protocol_parameters_destroy(signal_type_base *type)
 {
-    alice_axolotl_parameters *parameters = (alice_axolotl_parameters *)type;
+    alice_signal_protocol_parameters *parameters = (alice_signal_protocol_parameters *)type;
 
-    AXOLOTL_UNREF(parameters->our_identity_key);
-    AXOLOTL_UNREF(parameters->our_base_key);
-    AXOLOTL_UNREF(parameters->their_identity_key);
-    AXOLOTL_UNREF(parameters->their_signed_pre_key);
-    AXOLOTL_UNREF(parameters->their_ratchet_key);
+    SIGNAL_UNREF(parameters->our_identity_key);
+    SIGNAL_UNREF(parameters->our_base_key);
+    SIGNAL_UNREF(parameters->their_identity_key);
+    SIGNAL_UNREF(parameters->their_signed_pre_key);
+    SIGNAL_UNREF(parameters->their_ratchet_key);
 
     if(parameters->their_one_time_pre_key) {
-        AXOLOTL_UNREF(parameters->their_one_time_pre_key);
+        SIGNAL_UNREF(parameters->their_one_time_pre_key);
     }
 
     free(parameters);
 }
 
-int bob_axolotl_parameters_create(
-        bob_axolotl_parameters **parameters,
+int bob_signal_protocol_parameters_create(
+        bob_signal_protocol_parameters **parameters,
         ratchet_identity_key_pair *our_identity_key,
         ec_key_pair *our_signed_pre_key,
         ec_key_pair *our_one_time_pre_key,
@@ -795,27 +801,27 @@ int bob_axolotl_parameters_create(
         ec_public_key *their_identity_key,
         ec_public_key *their_base_key)
 {
-    bob_axolotl_parameters *result = 0;
+    bob_signal_protocol_parameters *result = 0;
 
     /* Only "our_one_time_pre_key" is allowed to be null */
     if(!our_identity_key || !our_signed_pre_key || !our_ratchet_key
             || !their_identity_key || !their_base_key) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
 
-    result = malloc(sizeof(bob_axolotl_parameters));
+    result = malloc(sizeof(bob_signal_protocol_parameters));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
-    memset(result, 0, sizeof(bob_axolotl_parameters));
+    memset(result, 0, sizeof(bob_signal_protocol_parameters));
 
-    AXOLOTL_INIT(result, bob_axolotl_parameters_destroy);
-    AXOLOTL_REF(our_identity_key);
-    AXOLOTL_REF(our_signed_pre_key);
-    AXOLOTL_REF(our_ratchet_key);
-    AXOLOTL_REF(their_identity_key);
-    AXOLOTL_REF(their_base_key);
+    SIGNAL_INIT(result, bob_signal_protocol_parameters_destroy);
+    SIGNAL_REF(our_identity_key);
+    SIGNAL_REF(our_signed_pre_key);
+    SIGNAL_REF(our_ratchet_key);
+    SIGNAL_REF(their_identity_key);
+    SIGNAL_REF(their_base_key);
     result->our_identity_key = our_identity_key;
     result->our_signed_pre_key = our_signed_pre_key;
     result->our_ratchet_key = our_ratchet_key;
@@ -823,7 +829,7 @@ int bob_axolotl_parameters_create(
     result->their_base_key = their_base_key;
 
     if(our_one_time_pre_key) {
-        AXOLOTL_REF(our_one_time_pre_key);
+        SIGNAL_REF(our_one_time_pre_key);
         result->our_one_time_pre_key = our_one_time_pre_key;
     }
 
@@ -831,25 +837,25 @@ int bob_axolotl_parameters_create(
     return 0;
 }
 
-void bob_axolotl_parameters_destroy(axolotl_type_base *type)
+void bob_signal_protocol_parameters_destroy(signal_type_base *type)
 {
-    bob_axolotl_parameters *parameters = (bob_axolotl_parameters *)type;
+    bob_signal_protocol_parameters *parameters = (bob_signal_protocol_parameters *)type;
 
-    AXOLOTL_UNREF(parameters->our_identity_key);
-    AXOLOTL_UNREF(parameters->our_signed_pre_key);
-    AXOLOTL_UNREF(parameters->our_ratchet_key);
-    AXOLOTL_UNREF(parameters->their_identity_key);
-    AXOLOTL_UNREF(parameters->their_base_key);
+    SIGNAL_UNREF(parameters->our_identity_key);
+    SIGNAL_UNREF(parameters->our_signed_pre_key);
+    SIGNAL_UNREF(parameters->our_ratchet_key);
+    SIGNAL_UNREF(parameters->their_identity_key);
+    SIGNAL_UNREF(parameters->their_base_key);
 
     if(parameters->our_one_time_pre_key) {
-        AXOLOTL_UNREF(parameters->our_one_time_pre_key);
+        SIGNAL_UNREF(parameters->our_one_time_pre_key);
     }
 
     free(parameters);
 }
 
 int ratcheting_session_calculate_derived_keys(ratchet_root_key **root_key, ratchet_chain_key **chain_key,
-        uint32_t version, uint8_t *secret, size_t secret_len, axolotl_context *global_context)
+        uint8_t *secret, size_t secret_len, signal_context *global_context)
 {
     int result = 0;
     ssize_t result_size = 0;
@@ -860,7 +866,7 @@ int ratcheting_session_calculate_derived_keys(ratchet_root_key **root_key, ratch
     uint8_t salt[HASH_OUTPUT_SIZE];
     static const char key_info[] = "WhisperText";
 
-    result = hkdf_create(&kdf, (int)version, global_context);
+    result = hkdf_create(&kdf, 3, global_context);
     if(result < 0) {
         goto complete;
     }
@@ -872,7 +878,7 @@ int ratcheting_session_calculate_derived_keys(ratchet_root_key **root_key, ratch
             salt, sizeof(salt),
             (uint8_t *)key_info, sizeof(key_info) - 1, 64);
     if(result_size != 64) {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
@@ -888,7 +894,7 @@ int ratcheting_session_calculate_derived_keys(ratchet_root_key **root_key, ratch
 
 complete:
     if(kdf) {
-        AXOLOTL_UNREF(kdf);
+        SIGNAL_UNREF(kdf);
     }
     if(output) {
         free(output);
@@ -896,10 +902,10 @@ complete:
 
     if(result < 0) {
         if(root_key_result) {
-            AXOLOTL_UNREF(root_key_result);
+            SIGNAL_UNREF(root_key_result);
         }
         if(chain_key_result) {
-            AXOLOTL_UNREF(chain_key_result);
+            SIGNAL_UNREF(chain_key_result);
         }
     }
     else {
@@ -910,7 +916,7 @@ complete:
     return result;
 }
 
-int ratcheting_session_symmetric_is_alice(symmetric_axolotl_parameters *parameters)
+int ratcheting_session_symmetric_is_alice(symmetric_signal_protocol_parameters *parameters)
 {
     //FIXME Java code checks if our_base_key < their_base_key
     // This comparison may not return the same result. However, we should find
@@ -921,9 +927,9 @@ int ratcheting_session_symmetric_is_alice(symmetric_axolotl_parameters *paramete
 }
 
 int ratcheting_session_symmetric_initialize(
-        session_state *state, uint32_t version,
-        symmetric_axolotl_parameters *parameters,
-        axolotl_context *global_context)
+        session_state *state,
+        symmetric_signal_protocol_parameters *parameters,
+        signal_context *global_context)
 {
     int result = 0;
 
@@ -932,8 +938,8 @@ int ratcheting_session_symmetric_initialize(
     assert(global_context);
 
     if(ratcheting_session_symmetric_is_alice(parameters)) {
-        alice_axolotl_parameters *alice_parameters = 0;
-        result = alice_axolotl_parameters_create(&alice_parameters,
+        alice_signal_protocol_parameters *alice_parameters = 0;
+        result = alice_signal_protocol_parameters_create(&alice_parameters,
                 parameters->our_identity_key,
                 parameters->our_base_key,
                 parameters->their_identity_key,
@@ -941,15 +947,15 @@ int ratcheting_session_symmetric_initialize(
                 0,
                 parameters->their_ratchet_key);
         if(result >= 0) {
-            result = ratcheting_session_alice_initialize(state, version, alice_parameters, global_context);
+            result = ratcheting_session_alice_initialize(state, alice_parameters, global_context);
         }
         if(alice_parameters) {
-            AXOLOTL_UNREF(alice_parameters);
+            SIGNAL_UNREF(alice_parameters);
         }
     }
     else {
-        bob_axolotl_parameters *bob_parameters = 0;
-        result = bob_axolotl_parameters_create(&bob_parameters,
+        bob_signal_protocol_parameters *bob_parameters = 0;
+        result = bob_signal_protocol_parameters_create(&bob_parameters,
                 parameters->our_identity_key,
                 parameters->our_base_key,
                 0,
@@ -957,19 +963,19 @@ int ratcheting_session_symmetric_initialize(
                 parameters->their_identity_key,
                 parameters->their_base_key);
         if(result >= 0) {
-            result = ratcheting_session_bob_initialize(state, version, bob_parameters, global_context);
+            result = ratcheting_session_bob_initialize(state, bob_parameters, global_context);
         }
         if(bob_parameters) {
-            AXOLOTL_UNREF(bob_parameters);
+            SIGNAL_UNREF(bob_parameters);
         }
     }
     return result;
 }
 
 int ratcheting_session_alice_initialize(
-        session_state *state, uint32_t version,
-        alice_axolotl_parameters *parameters,
-        axolotl_context *global_context)
+        session_state *state,
+        alice_signal_protocol_parameters *parameters,
+        signal_context *global_context)
 {
     int result = 0;
     uint8_t *agreement = 0;
@@ -982,6 +988,7 @@ int ratcheting_session_alice_initialize(
     struct vpool vp;
     uint8_t *secret = 0;
     size_t secret_len = 0;
+    uint8_t discontinuity_data[32];
 
     assert(state);
     assert(parameters);
@@ -994,13 +1001,10 @@ int ratcheting_session_alice_initialize(
         goto complete;
     }
 
-    if(version >= 3) {
-        uint8_t discontinuity_data[32];
-        memset(discontinuity_data, 0xFF, sizeof(discontinuity_data));
-        if(!vpool_insert(&vp, vpool_get_length(&vp), discontinuity_data, sizeof(discontinuity_data))) {
-            result = AX_ERR_NOMEM;
-            goto complete;
-        }
+    memset(discontinuity_data, 0xFF, sizeof(discontinuity_data));
+    if(!vpool_insert(&vp, vpool_get_length(&vp), discontinuity_data, sizeof(discontinuity_data))) {
+        result = SG_ERR_NOMEM;
+        goto complete;
     }
 
     agreement_len = curve_calculate_agreement(&agreement,
@@ -1013,7 +1017,7 @@ int ratcheting_session_alice_initialize(
         free(agreement); agreement = 0; agreement_len = 0;
     }
     else {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
@@ -1027,7 +1031,7 @@ int ratcheting_session_alice_initialize(
         free(agreement); agreement = 0; agreement_len = 0;
     }
     else {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
@@ -1041,11 +1045,11 @@ int ratcheting_session_alice_initialize(
         free(agreement); agreement = 0; agreement_len = 0;
     }
     else {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    if(version >= 3 && parameters->their_one_time_pre_key) {
+    if(parameters->their_one_time_pre_key) {
         agreement_len = curve_calculate_agreement(&agreement,
                 parameters->their_one_time_pre_key, ec_key_pair_get_private(parameters->our_base_key));
         if(agreement_len < 0) {
@@ -1056,20 +1060,20 @@ int ratcheting_session_alice_initialize(
             free(agreement); agreement = 0; agreement_len = 0;
         }
         else {
-            result = AX_ERR_NOMEM;
+            result = SG_ERR_NOMEM;
             goto complete;
         }
     }
 
     if(vpool_is_empty(&vp)) {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
     secret = vpool_get_buf(&vp);
     secret_len = vpool_get_length(&vp);
 
-    result = ratcheting_session_calculate_derived_keys(&derived_root, &derived_chain, version, secret, secret_len, global_context);
+    result = ratcheting_session_calculate_derived_keys(&derived_root, &derived_chain, secret, secret_len, global_context);
     if(result < 0) {
         goto complete;
     }
@@ -1084,7 +1088,7 @@ int ratcheting_session_alice_initialize(
 
 complete:
     if(result >= 0) {
-        session_state_set_session_version(state, version);
+        session_state_set_session_version(state, CIPHERTEXT_CURRENT_VERSION);
         session_state_set_remote_identity_key(state, parameters->their_identity_key);
         session_state_set_local_identity_key(state, parameters->our_identity_key->public_key);
         session_state_add_receiver_chain(state, parameters->their_ratchet_key, derived_chain);
@@ -1097,28 +1101,28 @@ complete:
         free(agreement);
     }
     if(sending_ratchet_key) {
-        AXOLOTL_UNREF(sending_ratchet_key);
+        SIGNAL_UNREF(sending_ratchet_key);
     }
     if(derived_root) {
-        AXOLOTL_UNREF(derived_root);
+        SIGNAL_UNREF(derived_root);
     }
     if(derived_chain) {
-        AXOLOTL_UNREF(derived_chain);
+        SIGNAL_UNREF(derived_chain);
     }
     if(sending_chain_root) {
-        AXOLOTL_UNREF(sending_chain_root);
+        SIGNAL_UNREF(sending_chain_root);
     }
     if(sending_chain_key) {
-        AXOLOTL_UNREF(sending_chain_key);
+        SIGNAL_UNREF(sending_chain_key);
     }
 
     return result;
 }
 
 int ratcheting_session_bob_initialize(
-        session_state *state, uint32_t version,
-        bob_axolotl_parameters *parameters,
-        axolotl_context *global_context)
+        session_state *state,
+        bob_signal_protocol_parameters *parameters,
+        signal_context *global_context)
 {
     int result = 0;
     uint8_t *agreement = 0;
@@ -1128,7 +1132,7 @@ int ratcheting_session_bob_initialize(
     struct vpool vp;
     uint8_t *secret = 0;
     size_t secret_len = 0;
-
+    uint8_t discontinuity_data[32];
 
     assert(state);
     assert(parameters);
@@ -1136,13 +1140,10 @@ int ratcheting_session_bob_initialize(
 
     vpool_init(&vp, 1024, 0);
 
-    if(version >= 3) {
-        uint8_t discontinuity_data[32];
-        memset(discontinuity_data, 0xFF, sizeof(discontinuity_data));
-        if(!vpool_insert(&vp, vpool_get_length(&vp), discontinuity_data, sizeof(discontinuity_data))) {
-            result = AX_ERR_NOMEM;
-            goto complete;
-        }
+    memset(discontinuity_data, 0xFF, sizeof(discontinuity_data));
+    if(!vpool_insert(&vp, vpool_get_length(&vp), discontinuity_data, sizeof(discontinuity_data))) {
+        result = SG_ERR_NOMEM;
+        goto complete;
     }
 
     agreement_len = curve_calculate_agreement(&agreement,
@@ -1155,7 +1156,7 @@ int ratcheting_session_bob_initialize(
         free(agreement); agreement = 0; agreement_len = 0;
     }
     else {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
@@ -1169,7 +1170,7 @@ int ratcheting_session_bob_initialize(
         free(agreement); agreement = 0; agreement_len = 0;
     }
     else {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
@@ -1183,11 +1184,11 @@ int ratcheting_session_bob_initialize(
         free(agreement); agreement = 0; agreement_len = 0;
     }
     else {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    if(version >= 3 && parameters->our_one_time_pre_key) {
+    if(parameters->our_one_time_pre_key) {
         agreement_len = curve_calculate_agreement(&agreement,
                 parameters->their_base_key, ec_key_pair_get_private(parameters->our_one_time_pre_key));
         if(agreement_len < 0) {
@@ -1198,24 +1199,24 @@ int ratcheting_session_bob_initialize(
             free(agreement); agreement = 0; agreement_len = 0;
         }
         else {
-            result = AX_ERR_NOMEM;
+            result = SG_ERR_NOMEM;
             goto complete;
         }
     }
 
     if(vpool_is_empty(&vp)) {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
     secret = vpool_get_buf(&vp);
     secret_len = vpool_get_length(&vp);
 
-    result = ratcheting_session_calculate_derived_keys(&derived_root, &derived_chain, version, secret, secret_len, global_context);
+    result = ratcheting_session_calculate_derived_keys(&derived_root, &derived_chain, secret, secret_len, global_context);
 
 complete:
     if(result >= 0) {
-        session_state_set_session_version(state, version);
+        session_state_set_session_version(state, CIPHERTEXT_CURRENT_VERSION);
         session_state_set_remote_identity_key(state, parameters->their_identity_key);
         session_state_set_local_identity_key(state, parameters->our_identity_key->public_key);
         session_state_set_sender_chain(state, parameters->our_ratchet_key, derived_chain);
@@ -1227,10 +1228,10 @@ complete:
         free(agreement);
     }
     if(derived_root) {
-        AXOLOTL_UNREF(derived_root);
+        SIGNAL_UNREF(derived_root);
     }
     if(derived_chain) {
-        AXOLOTL_UNREF(derived_chain);
+        SIGNAL_UNREF(derived_chain);
     }
 
     return result;
diff --git a/libs/libaxolotl/src/ratchet.h b/libs/libaxolotl/src/ratchet.h
index 1534b3c24c..e42c98a61e 100644
--- a/libs/libaxolotl/src/ratchet.h
+++ b/libs/libaxolotl/src/ratchet.h
@@ -3,85 +3,85 @@
 
 #include <stdint.h>
 #include <stddef.h>
-#include "axolotl_types.h"
+#include "signal_protocol_types.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 int ratchet_chain_key_create(ratchet_chain_key **chain_key, hkdf_context *kdf,
-        uint8_t *key, size_t key_len, uint32_t index,
-        axolotl_context *global_context);
-int ratchet_chain_key_get_key(const ratchet_chain_key *chain_key, axolotl_buffer **buffer);
+        const uint8_t *key, size_t key_len, uint32_t index,
+        signal_context *global_context);
+int ratchet_chain_key_get_key(const ratchet_chain_key *chain_key, signal_buffer **buffer);
 uint32_t ratchet_chain_key_get_index(const ratchet_chain_key *chain_key);
 int ratchet_chain_key_get_message_keys(ratchet_chain_key *chain_key, ratchet_message_keys *message_keys);
 int ratchet_chain_key_create_next(const ratchet_chain_key *chain_key, ratchet_chain_key **next_chain_key);
-void ratchet_chain_key_destroy(axolotl_type_base *type);
+void ratchet_chain_key_destroy(signal_type_base *type);
 
 int ratchet_root_key_create(ratchet_root_key **root_key, hkdf_context *kdf,
         const uint8_t *key, size_t key_len,
-        axolotl_context *global_context);
+        signal_context *global_context);
 int ratchet_root_key_create_chain(ratchet_root_key *root_key,
         ratchet_root_key **new_root_key, ratchet_chain_key **new_chain_key,
         ec_public_key *their_ratchet_key,
         ec_private_key *our_ratchet_key_private);
-int ratchet_root_key_get_key(ratchet_root_key *root_key, axolotl_buffer **buffer);
+int ratchet_root_key_get_key(ratchet_root_key *root_key, signal_buffer **buffer);
 int ratchet_root_key_compare(const ratchet_root_key *key1, const ratchet_root_key *key2);
-void ratchet_root_key_destroy(axolotl_type_base *type);
+void ratchet_root_key_destroy(signal_type_base *type);
 
 int ratchet_identity_key_pair_create(
         ratchet_identity_key_pair **key_pair,
         ec_public_key *public_key,
         ec_private_key *private_key);
-int ratchet_identity_key_pair_serialize(axolotl_buffer **buffer, const ratchet_identity_key_pair *key_pair);
-int ratchet_identity_key_pair_deserialize(ratchet_identity_key_pair **key_pair, const uint8_t *data, size_t len, axolotl_context *global_context);
+int ratchet_identity_key_pair_serialize(signal_buffer **buffer, const ratchet_identity_key_pair *key_pair);
+int ratchet_identity_key_pair_deserialize(ratchet_identity_key_pair **key_pair, const uint8_t *data, size_t len, signal_context *global_context);
 ec_public_key *ratchet_identity_key_pair_get_public(const ratchet_identity_key_pair *key_pair);
 ec_private_key *ratchet_identity_key_pair_get_private(const ratchet_identity_key_pair *key_pair);
-void ratchet_identity_key_pair_destroy(axolotl_type_base *type);
+void ratchet_identity_key_pair_destroy(signal_type_base *type);
 
-typedef struct symmetric_axolotl_parameters symmetric_axolotl_parameters;
-typedef struct alice_axolotl_parameters alice_axolotl_parameters;
-typedef struct bob_axolotl_parameters bob_axolotl_parameters;
+typedef struct symmetric_signal_protocol_parameters symmetric_signal_protocol_parameters;
+typedef struct alice_signal_protocol_parameters alice_signal_protocol_parameters;
+typedef struct bob_signal_protocol_parameters bob_signal_protocol_parameters;
 
-int symmetric_axolotl_parameters_create(
-        symmetric_axolotl_parameters **parameters,
+int symmetric_signal_protocol_parameters_create(
+        symmetric_signal_protocol_parameters **parameters,
         ratchet_identity_key_pair *our_identity_key,
         ec_key_pair *our_base_key,
         ec_key_pair *our_ratchet_key,
         ec_public_key *their_base_key,
         ec_public_key *their_ratchet_key,
         ec_public_key *their_identity_key);
-ratchet_identity_key_pair *symmetric_axolotl_parameters_get_our_identity_key(const symmetric_axolotl_parameters *parameters);
-ec_key_pair *symmetric_axolotl_parameters_get_our_base_key(const symmetric_axolotl_parameters *parameters);
-ec_key_pair *symmetric_axolotl_parameters_get_our_ratchet_key(const symmetric_axolotl_parameters *parameters);
-ec_public_key *symmetric_axolotl_parameters_get_their_base_key(const symmetric_axolotl_parameters *parameters);
-ec_public_key *symmetric_axolotl_parameters_get_their_ratchet_key(const symmetric_axolotl_parameters *parameters);
-ec_public_key *symmetric_axolotl_parameters_get_their_identity_key(const symmetric_axolotl_parameters *parameters);
-void symmetric_axolotl_parameters_destroy(axolotl_type_base *type);
+ratchet_identity_key_pair *symmetric_signal_protocol_parameters_get_our_identity_key(const symmetric_signal_protocol_parameters *parameters);
+ec_key_pair *symmetric_signal_protocol_parameters_get_our_base_key(const symmetric_signal_protocol_parameters *parameters);
+ec_key_pair *symmetric_signal_protocol_parameters_get_our_ratchet_key(const symmetric_signal_protocol_parameters *parameters);
+ec_public_key *symmetric_signal_protocol_parameters_get_their_base_key(const symmetric_signal_protocol_parameters *parameters);
+ec_public_key *symmetric_signal_protocol_parameters_get_their_ratchet_key(const symmetric_signal_protocol_parameters *parameters);
+ec_public_key *symmetric_signal_protocol_parameters_get_their_identity_key(const symmetric_signal_protocol_parameters *parameters);
+void symmetric_signal_protocol_parameters_destroy(signal_type_base *type);
 
-int alice_axolotl_parameters_create(
-        alice_axolotl_parameters **parameters,
+int alice_signal_protocol_parameters_create(
+        alice_signal_protocol_parameters **parameters,
         ratchet_identity_key_pair *our_identity_key,
         ec_key_pair *our_base_key,
         ec_public_key *their_identity_key,
         ec_public_key *their_signed_pre_key,
         ec_public_key *their_one_time_pre_key,
         ec_public_key *their_ratchet_key);
-void alice_axolotl_parameters_destroy(axolotl_type_base *type);
+void alice_signal_protocol_parameters_destroy(signal_type_base *type);
 
-int bob_axolotl_parameters_create(
-        bob_axolotl_parameters **parameters,
+int bob_signal_protocol_parameters_create(
+        bob_signal_protocol_parameters **parameters,
         ratchet_identity_key_pair *our_identity_key,
         ec_key_pair *our_signed_pre_key,
         ec_key_pair *our_one_time_pre_key,
         ec_key_pair *our_ratchet_key,
         ec_public_key *their_identity_key,
         ec_public_key *their_base_key);
-void bob_axolotl_parameters_destroy(axolotl_type_base *type);
+void bob_signal_protocol_parameters_destroy(signal_type_base *type);
 
-int ratcheting_session_symmetric_initialize(session_state *state, uint32_t version, symmetric_axolotl_parameters *parameters, axolotl_context *global_context);
-int ratcheting_session_alice_initialize(session_state *state, uint32_t version, alice_axolotl_parameters *parameters, axolotl_context *global_context);
-int ratcheting_session_bob_initialize(session_state *state, uint32_t version, bob_axolotl_parameters *parameters, axolotl_context *global_context);
+int ratcheting_session_symmetric_initialize(session_state *state, symmetric_signal_protocol_parameters *parameters, signal_context *global_context);
+int ratcheting_session_alice_initialize(session_state *state, alice_signal_protocol_parameters *parameters, signal_context *global_context);
+int ratcheting_session_bob_initialize(session_state *state, bob_signal_protocol_parameters *parameters, signal_context *global_context);
 
 #ifdef __cplusplus
 }
diff --git a/libs/libaxolotl/src/sender_key.c b/libs/libaxolotl/src/sender_key.c
index 6647598fc9..31d7499499 100644
--- a/libs/libaxolotl/src/sender_key.c
+++ b/libs/libaxolotl/src/sender_key.c
@@ -4,32 +4,32 @@
 #include <string.h>
 
 #include "hkdf.h"
-#include "axolotl_internal.h"
+#include "signal_protocol_internal.h"
 
 #define HASH_OUTPUT_SIZE 32
 
 struct sender_message_key {
-    axolotl_type_base base;
+    signal_type_base base;
     uint32_t iteration;
-    axolotl_buffer *iv;
-    axolotl_buffer *cipher_key;
-    axolotl_buffer *seed;
-    axolotl_context *global_context;
+    signal_buffer *iv;
+    signal_buffer *cipher_key;
+    signal_buffer *seed;
+    signal_context *global_context;
 };
 
 struct sender_chain_key {
-    axolotl_type_base base;
+    signal_type_base base;
     uint32_t iteration;
-    axolotl_buffer *chain_key;
-    axolotl_context *global_context;
+    signal_buffer *chain_key;
+    signal_context *global_context;
 };
 
-static int sender_chain_key_get_derivative(axolotl_buffer **derivative, uint8_t seed, axolotl_buffer *key,
-        axolotl_context *global_context);
+static int sender_chain_key_get_derivative(signal_buffer **derivative, uint8_t seed, signal_buffer *key,
+        signal_context *global_context);
 
 int sender_message_key_create(sender_message_key **key,
-        uint32_t iteration, axolotl_buffer *seed,
-        axolotl_context *global_context)
+        uint32_t iteration, signal_buffer *seed,
+        signal_context *global_context)
 {
     sender_message_key *result = 0;
     int ret = 0;
@@ -42,17 +42,17 @@ int sender_message_key_create(sender_message_key **key,
     assert(global_context);
 
     if(!seed) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
 
     memset(salt, 0, sizeof(salt));
 
     result = malloc(sizeof(sender_message_key));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
-    AXOLOTL_INIT(result, sender_message_key_destroy);
+    SIGNAL_INIT(result, sender_message_key_destroy);
 
     ret = hkdf_create(&kdf, 3, global_context);
     if(ret < 0) {
@@ -60,44 +60,44 @@ int sender_message_key_create(sender_message_key **key,
     }
 
     ret_size = hkdf_derive_secrets(kdf, &derivative,
-            axolotl_buffer_data(seed), axolotl_buffer_len(seed),
+            signal_buffer_data(seed), signal_buffer_len(seed),
             salt, sizeof(salt),
             (uint8_t *)info_material, sizeof(info_material) - 1, 48);
     if(ret_size != 48) {
-        ret = (ret_size < 0) ? (int)ret_size : AX_ERR_UNKNOWN;
-        axolotl_log(global_context, AX_LOG_WARNING, "hkdf_derive_secrets failed");
+        ret = (ret_size < 0) ? (int)ret_size : SG_ERR_UNKNOWN;
+        signal_log(global_context, SG_LOG_WARNING, "hkdf_derive_secrets failed");
         goto complete;
     }
 
     result->iteration = iteration;
 
-    result->seed = axolotl_buffer_copy(seed);
+    result->seed = signal_buffer_copy(seed);
     if(!result->seed) {
-        ret = AX_ERR_NOMEM;
+        ret = SG_ERR_NOMEM;
         goto complete;
     }
 
-    result->iv = axolotl_buffer_create(derivative, 16);
+    result->iv = signal_buffer_create(derivative, 16);
     if(!result->iv) {
-        ret = AX_ERR_NOMEM;
+        ret = SG_ERR_NOMEM;
         goto complete;
     }
 
-    result->cipher_key = axolotl_buffer_create(derivative + 16, 32);
+    result->cipher_key = signal_buffer_create(derivative + 16, 32);
     if(!result->cipher_key) {
-        ret = AX_ERR_NOMEM;
+        ret = SG_ERR_NOMEM;
         goto complete;
     }
 
     result->global_context = global_context;
 
 complete:
-    AXOLOTL_UNREF(kdf);
+    SIGNAL_UNREF(kdf);
     if(derivative) {
         free(derivative);
     }
     if(ret < 0) {
-        AXOLOTL_UNREF(result);
+        SIGNAL_UNREF(result);
     }
     else {
         ret = 0;
@@ -112,36 +112,36 @@ uint32_t sender_message_key_get_iteration(sender_message_key *key)
     return key->iteration;
 }
 
-axolotl_buffer *sender_message_key_get_iv(sender_message_key *key)
+signal_buffer *sender_message_key_get_iv(sender_message_key *key)
 {
     assert(key);
     return key->iv;
 }
 
-axolotl_buffer *sender_message_key_get_cipher_key(sender_message_key *key)
+signal_buffer *sender_message_key_get_cipher_key(sender_message_key *key)
 {
     assert(key);
     return key->cipher_key;
 }
 
-axolotl_buffer *sender_message_key_get_seed(sender_message_key *key)
+signal_buffer *sender_message_key_get_seed(sender_message_key *key)
 {
     assert(key);
     return key->seed;
 }
 
-void sender_message_key_destroy(axolotl_type_base *type)
+void sender_message_key_destroy(signal_type_base *type)
 {
     sender_message_key *key = (sender_message_key *)type;
-    axolotl_buffer_bzero_free(key->iv);
-    axolotl_buffer_bzero_free(key->cipher_key);
-    axolotl_buffer_bzero_free(key->seed);
+    signal_buffer_bzero_free(key->iv);
+    signal_buffer_bzero_free(key->cipher_key);
+    signal_buffer_bzero_free(key->seed);
     free(key);
 }
 
 int sender_chain_key_create(sender_chain_key **key,
-        uint32_t iteration, axolotl_buffer *chain_key,
-        axolotl_context *global_context)
+        uint32_t iteration, signal_buffer *chain_key,
+        signal_context *global_context)
 {
     sender_chain_key *result = 0;
     int ret = 0;
@@ -149,21 +149,21 @@ int sender_chain_key_create(sender_chain_key **key,
     assert(global_context);
 
     if(!chain_key) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
 
     result = malloc(sizeof(sender_chain_key));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
-    AXOLOTL_INIT(result, sender_chain_key_destroy);
+    SIGNAL_INIT(result, sender_chain_key_destroy);
 
     result->iteration = iteration;
 
-    result->chain_key = axolotl_buffer_copy(chain_key);
+    result->chain_key = signal_buffer_copy(chain_key);
     if(!result->chain_key) {
-        ret = AX_ERR_NOMEM;
+        ret = SG_ERR_NOMEM;
         goto complete;
     }
 
@@ -171,7 +171,7 @@ int sender_chain_key_create(sender_chain_key **key,
 
 complete:
     if(ret < 0) {
-        AXOLOTL_UNREF(result);
+        SIGNAL_UNREF(result);
     }
     else {
         ret = 0;
@@ -190,7 +190,7 @@ int sender_chain_key_create_message_key(sender_chain_key *key, sender_message_ke
 {
     static const uint8_t MESSAGE_KEY_SEED = 0x01;
     int ret = 0;
-    axolotl_buffer *derivative = 0;
+    signal_buffer *derivative = 0;
     sender_message_key *result = 0;
 
     assert(key);
@@ -203,7 +203,7 @@ int sender_chain_key_create_message_key(sender_chain_key *key, sender_message_ke
     ret = sender_message_key_create(&result, key->iteration, derivative, key->global_context);
 
 complete:
-    axolotl_buffer_free(derivative);
+    signal_buffer_free(derivative);
     if(ret >= 0) {
         ret = 0;
         *message_key = result;
@@ -215,7 +215,7 @@ int sender_chain_key_create_next(sender_chain_key *key, sender_chain_key **next_
 {
     static const uint8_t CHAIN_KEY_SEED = 0x02;
     int ret = 0;
-    axolotl_buffer *derivative = 0;
+    signal_buffer *derivative = 0;
     sender_chain_key *result = 0;
 
     assert(key);
@@ -228,7 +228,7 @@ int sender_chain_key_create_next(sender_chain_key *key, sender_chain_key **next_
     ret = sender_chain_key_create(&result, key->iteration + 1, derivative, key->global_context);
 
 complete:
-    axolotl_buffer_free(derivative);
+    signal_buffer_free(derivative);
     if(ret >= 0) {
         ret = 0;
         *next_key = result;
@@ -236,47 +236,47 @@ complete:
     return ret;
 }
 
-axolotl_buffer *sender_chain_key_get_seed(sender_chain_key *key)
+signal_buffer *sender_chain_key_get_seed(sender_chain_key *key)
 {
     assert(key);
     return key->chain_key;
 }
 
-void sender_chain_key_destroy(axolotl_type_base *type)
+void sender_chain_key_destroy(signal_type_base *type)
 {
     sender_chain_key *key = (sender_chain_key *)type;
-    axolotl_buffer_bzero_free(key->chain_key);
+    signal_buffer_bzero_free(key->chain_key);
     free(key);
 }
 
-int sender_chain_key_get_derivative(axolotl_buffer **derivative, uint8_t seed, axolotl_buffer *key,
-        axolotl_context *global_context)
+int sender_chain_key_get_derivative(signal_buffer **derivative, uint8_t seed, signal_buffer *key,
+        signal_context *global_context)
 {
     int result = 0;
-    axolotl_buffer *output_buffer = 0;
+    signal_buffer *output_buffer = 0;
     void *hmac_context = 0;
 
-    result = axolotl_hmac_sha256_init(global_context, &hmac_context,
-            axolotl_buffer_data(key), axolotl_buffer_len(key));
+    result = signal_hmac_sha256_init(global_context, &hmac_context,
+            signal_buffer_data(key), signal_buffer_len(key));
     if(result < 0) {
         goto complete;
     }
 
-    result = axolotl_hmac_sha256_update(global_context, hmac_context, &seed, sizeof(seed));
+    result = signal_hmac_sha256_update(global_context, hmac_context, &seed, sizeof(seed));
     if(result < 0) {
         goto complete;
     }
 
-    result = axolotl_hmac_sha256_final(global_context, hmac_context, &output_buffer);
+    result = signal_hmac_sha256_final(global_context, hmac_context, &output_buffer);
     if(result < 0) {
         goto complete;
     }
 
 complete:
-    axolotl_hmac_sha256_cleanup(global_context, hmac_context);
+    signal_hmac_sha256_cleanup(global_context, hmac_context);
 
     if(result < 0) {
-        axolotl_buffer_free(output_buffer);
+        signal_buffer_free(output_buffer);
     }
     else {
         *derivative = output_buffer;
diff --git a/libs/libaxolotl/src/sender_key.h b/libs/libaxolotl/src/sender_key.h
index 61bd7ef553..113bb5daa8 100644
--- a/libs/libaxolotl/src/sender_key.h
+++ b/libs/libaxolotl/src/sender_key.h
@@ -3,29 +3,29 @@
 
 #include <stdint.h>
 #include <stddef.h>
-#include "axolotl_types.h"
+#include "signal_protocol_types.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 int sender_message_key_create(sender_message_key **key,
-        uint32_t iteration, axolotl_buffer *seed,
-        axolotl_context *global_context);
+        uint32_t iteration, signal_buffer *seed,
+        signal_context *global_context);
 uint32_t sender_message_key_get_iteration(sender_message_key *key);
-axolotl_buffer *sender_message_key_get_iv(sender_message_key *key);
-axolotl_buffer *sender_message_key_get_cipher_key(sender_message_key *key);
-axolotl_buffer *sender_message_key_get_seed(sender_message_key *key);
-void sender_message_key_destroy(axolotl_type_base *type);
+signal_buffer *sender_message_key_get_iv(sender_message_key *key);
+signal_buffer *sender_message_key_get_cipher_key(sender_message_key *key);
+signal_buffer *sender_message_key_get_seed(sender_message_key *key);
+void sender_message_key_destroy(signal_type_base *type);
 
 int sender_chain_key_create(sender_chain_key **key,
-        uint32_t iteration, axolotl_buffer *chain_key,
-        axolotl_context *global_context);
+        uint32_t iteration, signal_buffer *chain_key,
+        signal_context *global_context);
 uint32_t sender_chain_key_get_iteration(sender_chain_key *key);
 int sender_chain_key_create_message_key(sender_chain_key *key, sender_message_key **message_key);
 int sender_chain_key_create_next(sender_chain_key *key, sender_chain_key **next_key);
-axolotl_buffer *sender_chain_key_get_seed(sender_chain_key *key);
-void sender_chain_key_destroy(axolotl_type_base *type);
+signal_buffer *sender_chain_key_get_seed(sender_chain_key *key);
+void sender_chain_key_destroy(signal_type_base *type);
 
 #ifdef __cplusplus
 }
diff --git a/libs/libaxolotl/src/sender_key_record.c b/libs/libaxolotl/src/sender_key_record.c
index 0d081f4278..9c7a2beeed 100644
--- a/libs/libaxolotl/src/sender_key_record.c
+++ b/libs/libaxolotl/src/sender_key_record.c
@@ -2,11 +2,11 @@
 
 #include <string.h>
 
-#include "axolotl_internal.h"
 #include "sender_key_state.h"
 #include "sender_key.h"
 #include "utlist.h"
 #include "LocalStorageProtocol.pb-c.h"
+#include "signal_protocol_internal.h"
 
 #define MAX_STATES 5
 
@@ -17,20 +17,20 @@ typedef struct sender_key_state_node {
 
 struct sender_key_record
 {
-    axolotl_type_base base;
+    signal_type_base base;
     sender_key_state_node *sender_key_states_head;
-    axolotl_context *global_context;
+    signal_context *global_context;
 };
 
 int sender_key_record_create(sender_key_record **record,
-        axolotl_context *global_context)
+        signal_context *global_context)
 {
     sender_key_record *result = malloc(sizeof(sender_key_record));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
     memset(result, 0, sizeof(sender_key_record));
-    AXOLOTL_INIT(result, sender_key_record_destroy);
+    SIGNAL_INIT(result, sender_key_record_destroy);
 
     result->global_context = global_context;
 
@@ -38,29 +38,29 @@ int sender_key_record_create(sender_key_record **record,
     return 0;
 }
 
-int sender_key_record_serialize(axolotl_buffer **buffer, sender_key_record *record)
+int sender_key_record_serialize(signal_buffer **buffer, sender_key_record *record)
 {
     int result = 0;
     size_t result_size = 0;
     unsigned int i = 0;
     Textsecure__SenderKeyRecordStructure record_structure = TEXTSECURE__SENDER_KEY_RECORD_STRUCTURE__INIT;
     sender_key_state_node *cur_node = 0;
-    axolotl_buffer *result_buf = 0;
+    signal_buffer *result_buf = 0;
     uint8_t *data;
     size_t len;
 
     if(record->sender_key_states_head) {
-        unsigned int count;
+        size_t count;
         DL_COUNT(record->sender_key_states_head, cur_node, count);
 
         if(count > SIZE_MAX / sizeof(Textsecure__SenderKeyStateStructure *)) {
-            result = AX_ERR_NOMEM;
+            result = SG_ERR_NOMEM;
             goto complete;
         }
 
         record_structure.senderkeystates = malloc(sizeof(Textsecure__SenderKeyStateStructure *) * count);
         if(!record_structure.senderkeystates) {
-            result = AX_ERR_NOMEM;
+            result = SG_ERR_NOMEM;
             goto complete;
         }
 
@@ -68,7 +68,7 @@ int sender_key_record_serialize(axolotl_buffer **buffer, sender_key_record *reco
         DL_FOREACH(record->sender_key_states_head, cur_node) {
             record_structure.senderkeystates[i] = malloc(sizeof(Textsecure__SenderKeyStateStructure));
             if(!record_structure.senderkeystates[i]) {
-                result = AX_ERR_NOMEM;
+                result = SG_ERR_NOMEM;
                 break;
             }
             textsecure__sender_key_state_structure__init(record_structure.senderkeystates[i]);
@@ -87,17 +87,17 @@ int sender_key_record_serialize(axolotl_buffer **buffer, sender_key_record *reco
 
     len = textsecure__sender_key_record_structure__get_packed_size(&record_structure);
 
-    result_buf = axolotl_buffer_alloc(len);
+    result_buf = signal_buffer_alloc(len);
     if(!result_buf) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    data = axolotl_buffer_data(result_buf);
+    data = signal_buffer_data(result_buf);
     result_size = textsecure__sender_key_record_structure__pack(&record_structure, data);
     if(result_size != len) {
-        axolotl_buffer_free(result_buf);
-        result = AX_ERR_INVALID_PROTO_BUF;
+        signal_buffer_free(result_buf);
+        result = SG_ERR_INVALID_PROTO_BUF;
         result_buf = 0;
         goto complete;
     }
@@ -118,7 +118,7 @@ complete:
     return result;
 }
 
-int sender_key_record_deserialize(sender_key_record **record, const uint8_t *data, size_t len, axolotl_context *global_context)
+int sender_key_record_deserialize(sender_key_record **record, const uint8_t *data, size_t len, signal_context *global_context)
 {
     int result = 0;
     sender_key_record *result_record = 0;
@@ -126,7 +126,7 @@ int sender_key_record_deserialize(sender_key_record **record, const uint8_t *dat
 
     record_structure = textsecure__sender_key_record_structure__unpack(0, len, data);
     if(!record_structure) {
-        result = AX_ERR_INVALID_PROTO_BUF;
+        result = SG_ERR_INVALID_PROTO_BUF;
         goto complete;
     }
 
@@ -147,7 +147,7 @@ int sender_key_record_deserialize(sender_key_record **record, const uint8_t *dat
 
             state_node = malloc(sizeof(sender_key_state_node));
             if(!state_node) {
-                result = AX_ERR_NOMEM;
+                result = SG_ERR_NOMEM;
                 goto complete;
             }
 
@@ -162,7 +162,7 @@ complete:
     }
     if(result_record) {
         if(result < 0) {
-            AXOLOTL_UNREF(result_record);
+            SIGNAL_UNREF(result_record);
         }
         else {
             *record = result_record;
@@ -171,10 +171,10 @@ complete:
     return result;
 }
 
-int sender_key_record_copy(sender_key_record **record, sender_key_record *other_record, axolotl_context *global_context)
+int sender_key_record_copy(sender_key_record **record, sender_key_record *other_record, signal_context *global_context)
 {
     int result = 0;
-    axolotl_buffer *buffer = 0;
+    signal_buffer *buffer = 0;
     uint8_t *data;
     size_t len;
 
@@ -186,8 +186,8 @@ int sender_key_record_copy(sender_key_record **record, sender_key_record *other_
         goto complete;
     }
 
-    data = axolotl_buffer_data(buffer);
-    len = axolotl_buffer_len(buffer);
+    data = signal_buffer_data(buffer);
+    len = signal_buffer_len(buffer);
 
     result = sender_key_record_deserialize(record, data, len, global_context);
     if(result < 0) {
@@ -196,7 +196,7 @@ int sender_key_record_copy(sender_key_record **record, sender_key_record *other_
 
 complete:
     if(buffer) {
-        axolotl_buffer_free(buffer);
+        signal_buffer_free(buffer);
     }
     return result;
 }
@@ -220,8 +220,8 @@ int sender_key_record_get_sender_key_state(sender_key_record *record, sender_key
         return 0;
     }
     else {
-        axolotl_log(record->global_context, AX_LOG_ERROR, "No key state in record!");
-        return AX_ERR_INVALID_KEY_ID;
+        signal_log(record->global_context, SG_LOG_ERROR, "No key state in record!");
+        return SG_ERR_INVALID_KEY_ID;
     }
 }
 
@@ -237,12 +237,12 @@ int sender_key_record_get_sender_key_state_by_id(sender_key_record *record, send
         }
     }
 
-    axolotl_log(record->global_context, AX_LOG_ERROR, "No keys for: %d", key_id);
-    return AX_ERR_INVALID_KEY_ID;
+    signal_log(record->global_context, SG_LOG_ERROR, "No keys for: %d", key_id);
+    return SG_ERR_INVALID_KEY_ID;
 }
 
 static int sender_key_record_add_sender_key_state_impl(sender_key_record *record,
-        uint32_t id, uint32_t iteration, axolotl_buffer *chain_key,
+        uint32_t id, uint32_t iteration, signal_buffer *chain_key,
         ec_public_key *signature_public_key, ec_private_key *signature_private_key)
 {
     int result = 0;
@@ -266,7 +266,7 @@ static int sender_key_record_add_sender_key_state_impl(sender_key_record *record
 
     state_node = malloc(sizeof(sender_key_state_node));
     if(!state_node) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
@@ -278,22 +278,22 @@ static int sender_key_record_add_sender_key_state_impl(sender_key_record *record
         state_node = record->sender_key_states_head->prev;
         DL_DELETE(record->sender_key_states_head, state_node);
         if(state_node->state) {
-            AXOLOTL_UNREF(state_node->state);
+            SIGNAL_UNREF(state_node->state);
         }
         free(state_node);
         --count;
     }
 
 complete:
-    AXOLOTL_UNREF(chain_key_element);
+    SIGNAL_UNREF(chain_key_element);
     if(result < 0) {
-        AXOLOTL_UNREF(state);
+        SIGNAL_UNREF(state);
     }
     return result;
 }
 
 int sender_key_record_add_sender_key_state(sender_key_record *record,
-        uint32_t id, uint32_t iteration, axolotl_buffer *chain_key, ec_public_key *signature_key)
+        uint32_t id, uint32_t iteration, signal_buffer *chain_key, ec_public_key *signature_key)
 {
     int result = sender_key_record_add_sender_key_state_impl(
             record, id, iteration, chain_key, signature_key, 0);
@@ -301,7 +301,7 @@ int sender_key_record_add_sender_key_state(sender_key_record *record,
 }
 
 int sender_key_record_set_sender_key_state(sender_key_record *record,
-        uint32_t id, uint32_t iteration, axolotl_buffer *chain_key, ec_key_pair *signature_key_pair)
+        uint32_t id, uint32_t iteration, signal_buffer *chain_key, ec_key_pair *signature_key_pair)
 {
     int result = 0;
     sender_key_state_node *cur_node;
@@ -311,7 +311,7 @@ int sender_key_record_set_sender_key_state(sender_key_record *record,
     DL_FOREACH_SAFE(record->sender_key_states_head, cur_node, tmp_node) {
         DL_DELETE(record->sender_key_states_head, cur_node);
         if(cur_node->state) {
-            AXOLOTL_UNREF(cur_node->state);
+            SIGNAL_UNREF(cur_node->state);
         }
         free(cur_node);
     }
@@ -324,7 +324,7 @@ int sender_key_record_set_sender_key_state(sender_key_record *record,
     return result;
 }
 
-void sender_key_record_destroy(axolotl_type_base *type)
+void sender_key_record_destroy(signal_type_base *type)
 {
     sender_key_record *record = (sender_key_record *)type;
     sender_key_state_node *cur_node;
@@ -333,7 +333,7 @@ void sender_key_record_destroy(axolotl_type_base *type)
     DL_FOREACH_SAFE(record->sender_key_states_head, cur_node, tmp_node) {
         DL_DELETE(record->sender_key_states_head, cur_node);
         if(cur_node->state) {
-            AXOLOTL_UNREF(cur_node->state);
+            SIGNAL_UNREF(cur_node->state);
         }
         free(cur_node);
     }
diff --git a/libs/libaxolotl/src/sender_key_record.h b/libs/libaxolotl/src/sender_key_record.h
index a50d6451ac..4cc4f92715 100644
--- a/libs/libaxolotl/src/sender_key_record.h
+++ b/libs/libaxolotl/src/sender_key_record.h
@@ -1,27 +1,27 @@
 #ifndef SENDER_KEY_RECORD_H
 #define SENDER_KEY_RECORD_H
 
-#include "axolotl_types.h"
+#include "signal_protocol_types.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 int sender_key_record_create(sender_key_record **record,
-        axolotl_context *global_context);
-int sender_key_record_serialize(axolotl_buffer **buffer, sender_key_record *record);
-int sender_key_record_deserialize(sender_key_record **record, const uint8_t *data, size_t len, axolotl_context *global_context);
-int sender_key_record_copy(sender_key_record **record, sender_key_record *other_state, axolotl_context *global_context);
+        signal_context *global_context);
+int sender_key_record_serialize(signal_buffer **buffer, sender_key_record *record);
+int sender_key_record_deserialize(sender_key_record **record, const uint8_t *data, size_t len, signal_context *global_context);
+int sender_key_record_copy(sender_key_record **record, sender_key_record *other_state, signal_context *global_context);
 
 int sender_key_record_is_empty(sender_key_record *record);
 int sender_key_record_get_sender_key_state(sender_key_record *record, sender_key_state **state);
 int sender_key_record_get_sender_key_state_by_id(sender_key_record *record, sender_key_state **state, uint32_t key_id);
 int sender_key_record_add_sender_key_state(sender_key_record *record,
-        uint32_t id, uint32_t iteration, axolotl_buffer *chain_key, ec_public_key *signature_key);
+        uint32_t id, uint32_t iteration, signal_buffer *chain_key, ec_public_key *signature_key);
 int sender_key_record_set_sender_key_state(sender_key_record *record,
-        uint32_t id, uint32_t iteration, axolotl_buffer *chain_key, ec_key_pair *signature_key_pair);
+        uint32_t id, uint32_t iteration, signal_buffer *chain_key, ec_key_pair *signature_key_pair);
 
-void sender_key_record_destroy(axolotl_type_base *type);
+void sender_key_record_destroy(signal_type_base *type);
 
 #ifdef __cplusplus
 }
diff --git a/libs/libaxolotl/src/sender_key_state.c b/libs/libaxolotl/src/sender_key_state.c
index fd65965fda..0b19cb7412 100644
--- a/libs/libaxolotl/src/sender_key_state.c
+++ b/libs/libaxolotl/src/sender_key_state.c
@@ -5,9 +5,9 @@
 #include <assert.h>
 
 #include "sender_key.h"
-#include "axolotl_internal.h"
 #include "utlist.h"
 #include "LocalStorageProtocol.pb-c.h"
+#include "signal_protocol_internal.h"
 
 #define MAX_MESSAGE_KEYS 2000
 
@@ -18,7 +18,7 @@ typedef struct sender_message_key_node {
 
 struct sender_key_state
 {
-    axolotl_type_base base;
+    signal_type_base base;
 
     uint32_t key_id;
     sender_chain_key *chain_key;
@@ -26,37 +26,37 @@ struct sender_key_state
     ec_private_key *signature_private_key;
     sender_message_key_node *message_keys_head;
 
-    axolotl_context *global_context;
+    signal_context *global_context;
 };
 
 int sender_key_state_create(sender_key_state **state,
         uint32_t id, sender_chain_key *chain_key,
         ec_public_key *signature_public_key, ec_private_key *signature_private_key,
-        axolotl_context *global_context)
+        signal_context *global_context)
 {
     sender_key_state *result = 0;
 
     if(!chain_key || !signature_public_key) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
 
     result = malloc(sizeof(sender_key_state));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
     memset(result, 0, sizeof(sender_key_state));
-    AXOLOTL_INIT(result, sender_key_state_destroy);
+    SIGNAL_INIT(result, sender_key_state_destroy);
 
     result->key_id = id;
 
-    AXOLOTL_REF(chain_key);
+    SIGNAL_REF(chain_key);
     result->chain_key = chain_key;
 
-    AXOLOTL_REF(signature_public_key);
+    SIGNAL_REF(signature_public_key);
     result->signature_public_key = signature_public_key;
 
     if(signature_private_key) {
-        AXOLOTL_REF(signature_private_key);
+        SIGNAL_REF(signature_private_key);
         result->signature_private_key = signature_private_key;
     }
 
@@ -66,18 +66,18 @@ int sender_key_state_create(sender_key_state **state,
     return 0;
 }
 
-int sender_key_state_serialize(axolotl_buffer **buffer, sender_key_state *state)
+int sender_key_state_serialize(signal_buffer **buffer, sender_key_state *state)
 {
     int result = 0;
     size_t result_size = 0;
     uint8_t *data;
     size_t len;
     Textsecure__SenderKeyStateStructure *state_structure = 0;
-    axolotl_buffer *result_buf = 0;
+    signal_buffer *result_buf = 0;
 
     state_structure = malloc(sizeof(Textsecure__SenderKeyStateStructure));
     if(!state_structure) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
     textsecure__sender_key_state_structure__init(state_structure);
@@ -89,17 +89,17 @@ int sender_key_state_serialize(axolotl_buffer **buffer, sender_key_state *state)
 
     len = textsecure__sender_key_state_structure__get_packed_size(state_structure);
 
-    result_buf = axolotl_buffer_alloc(len);
+    result_buf = signal_buffer_alloc(len);
     if(!result_buf) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    data = axolotl_buffer_data(result_buf);
+    data = signal_buffer_data(result_buf);
     result_size = textsecure__sender_key_state_structure__pack(state_structure, data);
     if(result_size != len) {
-        axolotl_buffer_free(result_buf);
-        result = AX_ERR_INVALID_PROTO_BUF;
+        signal_buffer_free(result_buf);
+        result = SG_ERR_INVALID_PROTO_BUF;
         result_buf = 0;
         goto complete;
     }
@@ -114,7 +114,7 @@ complete:
     return result;
 }
 
-int sender_key_state_deserialize(sender_key_state **state, const uint8_t *data, size_t len, axolotl_context *global_context)
+int sender_key_state_deserialize(sender_key_state **state, const uint8_t *data, size_t len, signal_context *global_context)
 {
     int result = 0;
     Textsecure__SenderKeyStateStructure *state_structure = 0;
@@ -122,7 +122,7 @@ int sender_key_state_deserialize(sender_key_state **state, const uint8_t *data,
 
     state_structure = textsecure__sender_key_state_structure__unpack(0, len, data);
     if(!state_structure) {
-        result = AX_ERR_INVALID_PROTO_BUF;
+        result = SG_ERR_INVALID_PROTO_BUF;
         goto complete;
     }
 
@@ -137,7 +137,7 @@ complete:
     }
     if(result_state) {
         if(result < 0) {
-            AXOLOTL_UNREF(result_state);
+            SIGNAL_UNREF(result_state);
         }
         else {
             *state = result_state;
@@ -154,7 +154,7 @@ int sender_key_state_serialize_prepare(sender_key_state *state, Textsecure__Send
     Textsecure__SenderKeyStateStructure__SenderChainKey *chain_key_structure = 0;
     Textsecure__SenderKeyStateStructure__SenderSigningKey *signing_key_structure = 0;
     sender_message_key_node *cur_node = 0;
-    axolotl_buffer *chain_key_seed = 0;
+    signal_buffer *chain_key_seed = 0;
 
     assert(state);
     assert(state_structure);
@@ -166,7 +166,7 @@ int sender_key_state_serialize_prepare(sender_key_state *state, Textsecure__Send
     /* Sender chain key */
     chain_key_structure = malloc(sizeof(Textsecure__SenderKeyStateStructure__SenderChainKey));
     if(!chain_key_structure) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
     textsecure__sender_key_state_structure__sender_chain_key__init(chain_key_structure);
@@ -176,14 +176,14 @@ int sender_key_state_serialize_prepare(sender_key_state *state, Textsecure__Send
     chain_key_structure->has_iteration = 1;
 
     chain_key_seed = sender_chain_key_get_seed(state->chain_key);
-    chain_key_structure->seed.data = axolotl_buffer_data(chain_key_seed);
-    chain_key_structure->seed.len = axolotl_buffer_len(chain_key_seed);
+    chain_key_structure->seed.data = signal_buffer_data(chain_key_seed);
+    chain_key_structure->seed.len = signal_buffer_len(chain_key_seed);
     chain_key_structure->has_seed = 1;
 
     /* Sender signing key */
     signing_key_structure = malloc(sizeof(Textsecure__SenderKeyStateStructure__SenderSigningKey));
     if(!signing_key_structure) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
     textsecure__sender_key_state_structure__sender_signing_key__init(signing_key_structure);
@@ -207,26 +207,26 @@ int sender_key_state_serialize_prepare(sender_key_state *state, Textsecure__Send
 
     /* Sender message keys */
     if(state->message_keys_head) {
-        unsigned int count;
+        size_t count;
         DL_COUNT(state->message_keys_head, cur_node, count);
 
         if(count > SIZE_MAX / sizeof(Textsecure__SenderKeyStateStructure__SenderMessageKey *)) {
-            result = AX_ERR_NOMEM;
+            result = SG_ERR_NOMEM;
             goto complete;
         }
 
         state_structure->sendermessagekeys = malloc(sizeof(Textsecure__SenderKeyStateStructure__SenderMessageKey *) * count);
         if(!state_structure->sendermessagekeys) {
-            result = AX_ERR_NOMEM;
+            result = SG_ERR_NOMEM;
             goto complete;
         }
 
         i = 0;
         DL_FOREACH(state->message_keys_head, cur_node) {
-            axolotl_buffer *seed = 0;
+            signal_buffer *seed = 0;
             state_structure->sendermessagekeys[i] = malloc(sizeof(Textsecure__SenderKeyStateStructure__SenderMessageKey));
             if(!state_structure->sendermessagekeys[i]) {
-                result = AX_ERR_NOMEM;
+                result = SG_ERR_NOMEM;
                 break;
             }
             textsecure__sender_key_state_structure__sender_message_key__init(state_structure->sendermessagekeys[i]);
@@ -235,8 +235,8 @@ int sender_key_state_serialize_prepare(sender_key_state *state, Textsecure__Send
             state_structure->sendermessagekeys[i]->has_iteration = 1;
 
             seed = sender_message_key_get_seed(cur_node->key);
-            state_structure->sendermessagekeys[i]->seed.data = axolotl_buffer_data(seed);
-            state_structure->sendermessagekeys[i]->seed.len = axolotl_buffer_len(seed);
+            state_structure->sendermessagekeys[i]->seed.data = signal_buffer_data(seed);
+            state_structure->sendermessagekeys[i]->seed.len = signal_buffer_len(seed);
             state_structure->sendermessagekeys[i]->has_seed = 1;
 
             if(result < 0) {
@@ -281,7 +281,7 @@ void sender_key_state_serialize_prepare_free(Textsecure__SenderKeyStateStructure
     free(state_structure);
 }
 
-int sender_key_state_deserialize_protobuf(sender_key_state **state, Textsecure__SenderKeyStateStructure *state_structure, axolotl_context *global_context)
+int sender_key_state_deserialize_protobuf(sender_key_state **state, Textsecure__SenderKeyStateStructure *state_structure, signal_context *global_context)
 {
     int result = 0;
     sender_key_state *result_state = 0;
@@ -292,11 +292,11 @@ int sender_key_state_deserialize_protobuf(sender_key_state **state, Textsecure__
     if(state_structure->senderchainkey
             && state_structure->senderchainkey->has_iteration
             && state_structure->senderchainkey->has_seed) {
-        axolotl_buffer *seed_buffer = axolotl_buffer_create(
+        signal_buffer *seed_buffer = signal_buffer_create(
                 state_structure->senderchainkey->seed.data,
                 state_structure->senderchainkey->seed.len);
         if(!seed_buffer) {
-            result = AX_ERR_NOMEM;
+            result = SG_ERR_NOMEM;
             goto complete;
         }
 
@@ -304,7 +304,7 @@ int sender_key_state_deserialize_protobuf(sender_key_state **state, Textsecure__
                 state_structure->senderchainkey->iteration,
                 seed_buffer,
                 global_context);
-        axolotl_buffer_free(seed_buffer);
+        signal_buffer_free(seed_buffer);
         if(result < 0) {
             goto complete;
         }
@@ -337,10 +337,13 @@ int sender_key_state_deserialize_protobuf(sender_key_state **state, Textsecure__
                 state_structure->senderkeyid, chain_key,
                 signature_public_key, signature_private_key,
                 global_context);
+        if(result < 0) {
+            goto complete;
+        }
 
         if(state_structure->n_sendermessagekeys > 0) {
             for(i = 0; i < state_structure->n_sendermessagekeys; i++) {
-                axolotl_buffer *seed_buffer;
+                signal_buffer *seed_buffer;
                 sender_message_key *message_key;
                 Textsecure__SenderKeyStateStructure__SenderMessageKey *message_key_structure =
                         state_structure->sendermessagekeys[i];
@@ -349,18 +352,18 @@ int sender_key_state_deserialize_protobuf(sender_key_state **state, Textsecure__
                     continue;
                 }
 
-                seed_buffer = axolotl_buffer_create(
+                seed_buffer = signal_buffer_create(
                         message_key_structure->seed.data,
                         message_key_structure->seed.len);
                 if(!seed_buffer) {
-                    result = AX_ERR_NOMEM;
+                    result = SG_ERR_NOMEM;
                     goto complete;
                 }
 
                 result = sender_message_key_create(&message_key,
                         message_key_structure->iteration, seed_buffer,
                         global_context);
-                axolotl_buffer_free(seed_buffer);
+                signal_buffer_free(seed_buffer);
                 if(result < 0) {
                     goto complete;
                 }
@@ -369,36 +372,39 @@ int sender_key_state_deserialize_protobuf(sender_key_state **state, Textsecure__
                 if(result < 0) {
                     goto complete;
                 }
-                AXOLOTL_UNREF(message_key);
+                SIGNAL_UNREF(message_key);
             }
         }
     }
+    else {
+        result = SG_ERR_INVALID_PROTO_BUF;
+    }
 
 complete:
     if(chain_key) {
-        AXOLOTL_UNREF(chain_key);
+        SIGNAL_UNREF(chain_key);
     }
     if(signature_public_key) {
-        AXOLOTL_UNREF(signature_public_key);
+        SIGNAL_UNREF(signature_public_key);
     }
     if(signature_private_key) {
-        AXOLOTL_UNREF(signature_private_key);
+        SIGNAL_UNREF(signature_private_key);
     }
     if(result >= 0) {
         *state = result_state;
     }
     else {
         if(result_state) {
-            AXOLOTL_UNREF(result_state);
+            SIGNAL_UNREF(result_state);
         }
     }
     return result;
 }
 
-int sender_key_state_copy(sender_key_state **state, sender_key_state *other_state, axolotl_context *global_context)
+int sender_key_state_copy(sender_key_state **state, sender_key_state *other_state, signal_context *global_context)
 {
     int result = 0;
-    axolotl_buffer *buffer = 0;
+    signal_buffer *buffer = 0;
     uint8_t *data;
     size_t len;
 
@@ -410,8 +416,8 @@ int sender_key_state_copy(sender_key_state **state, sender_key_state *other_stat
         goto complete;
     }
 
-    data = axolotl_buffer_data(buffer);
-    len = axolotl_buffer_len(buffer);
+    data = signal_buffer_data(buffer);
+    len = signal_buffer_len(buffer);
 
     result = sender_key_state_deserialize(state, data, len, global_context);
     if(result < 0) {
@@ -420,7 +426,7 @@ int sender_key_state_copy(sender_key_state **state, sender_key_state *other_stat
 
 complete:
     if(buffer) {
-        axolotl_buffer_free(buffer);
+        signal_buffer_free(buffer);
     }
     return result;
 }
@@ -443,9 +449,9 @@ void sender_key_state_set_chain_key(sender_key_state *state, sender_chain_key *c
     assert(chain_key);
 
     if(state->chain_key) {
-        AXOLOTL_UNREF(state->chain_key);
+        SIGNAL_UNREF(state->chain_key);
     }
-    AXOLOTL_REF(chain_key);
+    SIGNAL_REF(chain_key);
     state->chain_key = chain_key;
 }
 
@@ -485,11 +491,11 @@ int sender_key_state_add_sender_message_key(sender_key_state *state, sender_mess
 
     node = malloc(sizeof(sender_message_key_node));
     if(!node) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    AXOLOTL_REF(message_key);
+    SIGNAL_REF(message_key);
     node->key = message_key;
     DL_APPEND(state->message_keys_head, node);
 
@@ -498,7 +504,7 @@ int sender_key_state_add_sender_message_key(sender_key_state *state, sender_mess
         node = state->message_keys_head;
         DL_DELETE(state->message_keys_head, node);
         if(node->key) {
-            AXOLOTL_UNREF(node->key);
+            SIGNAL_UNREF(node->key);
         }
         free(node);
         --count;
@@ -527,20 +533,20 @@ sender_message_key *sender_key_state_remove_sender_message_key(sender_key_state
     return result;
 }
 
-void sender_key_state_destroy(axolotl_type_base *type)
+void sender_key_state_destroy(signal_type_base *type)
 {
     sender_key_state *state = (sender_key_state *)type;
     sender_message_key_node *cur_node;
     sender_message_key_node *tmp_node;
 
-    AXOLOTL_UNREF(state->chain_key);
-    AXOLOTL_UNREF(state->signature_public_key);
-    AXOLOTL_UNREF(state->signature_private_key);
+    SIGNAL_UNREF(state->chain_key);
+    SIGNAL_UNREF(state->signature_public_key);
+    SIGNAL_UNREF(state->signature_private_key);
 
     DL_FOREACH_SAFE(state->message_keys_head, cur_node, tmp_node) {
         DL_DELETE(state->message_keys_head, cur_node);
         if(cur_node->key) {
-            AXOLOTL_UNREF(cur_node->key);
+            SIGNAL_UNREF(cur_node->key);
         }
         free(cur_node);
     }
diff --git a/libs/libaxolotl/src/sender_key_state.h b/libs/libaxolotl/src/sender_key_state.h
index 117afa43be..968c7fb753 100644
--- a/libs/libaxolotl/src/sender_key_state.h
+++ b/libs/libaxolotl/src/sender_key_state.h
@@ -2,7 +2,7 @@
 #define SENDER_KEY_STATE_H
 
 #include <stdint.h>
-#include "axolotl_types.h"
+#include "signal_protocol_types.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -11,10 +11,10 @@ extern "C" {
 int sender_key_state_create(sender_key_state **state,
         uint32_t id, sender_chain_key *chain_key,
         ec_public_key *signature_public_key, ec_private_key *signature_private_key,
-        axolotl_context *global_context);
-int sender_key_state_serialize(axolotl_buffer **buffer, sender_key_state *state);
-int sender_key_state_deserialize(sender_key_state **state, const uint8_t *data, size_t len, axolotl_context *global_context);
-int sender_key_state_copy(sender_key_state **state, sender_key_state *other_state, axolotl_context *global_context);
+        signal_context *global_context);
+int sender_key_state_serialize(signal_buffer **buffer, sender_key_state *state);
+int sender_key_state_deserialize(sender_key_state **state, const uint8_t *data, size_t len, signal_context *global_context);
+int sender_key_state_copy(sender_key_state **state, sender_key_state *other_state, signal_context *global_context);
 
 uint32_t sender_key_state_get_key_id(sender_key_state *state);
 sender_chain_key *sender_key_state_get_chain_key(sender_key_state *state);
@@ -25,7 +25,7 @@ int sender_key_state_has_sender_message_key(sender_key_state *state, uint32_t it
 int sender_key_state_add_sender_message_key(sender_key_state *state, sender_message_key *message_key);
 sender_message_key *sender_key_state_remove_sender_message_key(sender_key_state *state, uint32_t iteration);
 
-void sender_key_state_destroy(axolotl_type_base *type);
+void sender_key_state_destroy(signal_type_base *type);
 
 #ifdef __cplusplus
 }
diff --git a/libs/libaxolotl/src/session_builder.c b/libs/libaxolotl/src/session_builder.c
index b962c21b5f..2bfd62015f 100644
--- a/libs/libaxolotl/src/session_builder.c
+++ b/libs/libaxolotl/src/session_builder.c
@@ -1,36 +1,29 @@
 #include "session_builder.h"
+#include "session_builder_internal.h"
 
 #include <assert.h>
 #include <string.h>
-#include "axolotl_internal.h"
 #include "session_pre_key.h"
 #include "session_record.h"
 #include "session_state.h"
 #include "ratchet.h"
 #include "protocol.h"
 #include "key_helper.h"
-
-#define MIN(a,b) (((a)<(b))?(a):(b))
+#include "signal_protocol_internal.h"
 
 struct session_builder
 {
-    axolotl_store_context *store;
-    const axolotl_address *remote_address;
-    axolotl_context *global_context;
+    signal_protocol_store_context *store;
+    const signal_protocol_address *remote_address;
+    signal_context *global_context;
 };
 
-static int session_builder_process_pre_key_whisper_message_v2(session_builder *builder,
-        session_record *record, pre_key_whisper_message *message, uint32_t *unsigned_pre_key_id);
-static int session_builder_process_pre_key_whisper_message_v3(session_builder *builder,
-        session_record *record, pre_key_whisper_message *message, uint32_t *unsigned_pre_key_id);
-static int session_builder_process_initiate(session_builder *builder,
-        key_exchange_message *message, key_exchange_message **response_message);
-static int session_builder_process_response(session_builder *builder,
-        key_exchange_message *message);
+static int session_builder_process_pre_key_signal_message_v3(session_builder *builder,
+        session_record *record, pre_key_signal_message *message, uint32_t *unsigned_pre_key_id);
 
 int session_builder_create(session_builder **builder,
-        axolotl_store_context *store, const axolotl_address *remote_address,
-        axolotl_context *global_context)
+        signal_protocol_store_context *store, const signal_protocol_address *remote_address,
+        signal_context *global_context)
 {
     session_builder *result = 0;
 
@@ -39,7 +32,7 @@ int session_builder_create(session_builder **builder,
 
     result = malloc(sizeof(session_builder));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
     memset(result, 0, sizeof(session_builder));
 
@@ -51,43 +44,33 @@ int session_builder_create(session_builder **builder,
     return 0;
 }
 
-int session_builder_process_pre_key_whisper_message(session_builder *builder,
-        session_record *record, pre_key_whisper_message *message, uint32_t *unsigned_pre_key_id)
+int session_builder_process_pre_key_signal_message(session_builder *builder,
+        session_record *record, pre_key_signal_message *message, uint32_t *unsigned_pre_key_id)
 {
     int result = 0;
     int has_unsigned_pre_key_id_result = 0;
     uint32_t unsigned_pre_key_id_result = 0;
-    int message_version = pre_key_whisper_message_get_message_version(message);
-    ec_public_key *their_identity_key = pre_key_whisper_message_get_identity_key(message);
+    ec_public_key *their_identity_key = pre_key_signal_message_get_identity_key(message);
 
-    result = axolotl_identity_is_trusted_identity(builder->store,
-            builder->remote_address->name, builder->remote_address->name_len,
+    result = signal_protocol_identity_is_trusted_identity(builder->store,
+            builder->remote_address,
             their_identity_key);
     if(result < 0) {
         goto complete;
     }
     if(result == 0) {
-        result = AX_ERR_UNTRUSTED_IDENTITY;
+        result = SG_ERR_UNTRUSTED_IDENTITY;
         goto complete;
     }
 
-    if(message_version == 2) {
-        result = session_builder_process_pre_key_whisper_message_v2(builder, record, message, &unsigned_pre_key_id_result);
-    }
-    else if(message_version == 3) {
-        result = session_builder_process_pre_key_whisper_message_v3(builder, record, message, &unsigned_pre_key_id_result);
-    }
-    else {
-        axolotl_log(builder->global_context, AX_LOG_WARNING, "Unknown version: %d", message_version);
-        result = AX_ERR_INVALID_VERSION;
-    }
+    result = session_builder_process_pre_key_signal_message_v3(builder, record, message, &unsigned_pre_key_id_result);
     if(result < 0) {
         goto complete;
     }
     has_unsigned_pre_key_id_result = result;
 
-    result = axolotl_identity_save_identity(builder->store,
-            builder->remote_address->name, builder->remote_address->name_len,
+    result = signal_protocol_identity_save_identity(builder->store,
+            builder->remote_address,
             their_identity_key);
     if(result < 0) {
         goto complete;
@@ -102,195 +85,92 @@ complete:
     return result;
 }
 
-static int session_builder_process_pre_key_whisper_message_v2(session_builder *builder,
-        session_record *record, pre_key_whisper_message *message, uint32_t *unsigned_pre_key_id)
-{
-    int result = 0;
-    uint32_t unsigned_pre_key_id_result = 0;
-    session_pre_key *our_pre_key = 0;
-    ratchet_identity_key_pair *our_identity_key = 0;
-    bob_axolotl_parameters *parameters = 0;
-    uint32_t pre_key_id = 0;
-    int contains_session = 0;
-    session_state *state = 0;
-    int contains_key = 0;
-    uint32_t local_registration_id = 0;
-
-    if(!pre_key_whisper_message_has_pre_key_id(message)) {
-        axolotl_log(builder->global_context, AX_LOG_WARNING, "V2 message requires one time pre key ID!");
-        result = AX_ERR_INVALID_KEY_ID;
-        goto complete;
-    }
-
-    pre_key_id = pre_key_whisper_message_get_pre_key_id(message);
-
-    contains_key = axolotl_pre_key_contains_key(builder->store, pre_key_id);
-    if(contains_key < 0) {
-        result = contains_key;
-        goto complete;
-    }
-
-    contains_session = axolotl_session_contains_session(builder->store, builder->remote_address);
-    if(contains_session < 0) {
-        result = contains_session;
-        goto complete;
-    }
-
-    if(!contains_key && contains_session) {
-        axolotl_log(builder->global_context, AX_LOG_INFO, "We've already processed the prekey part of this V2 session, letting bundled message fall through...");
-        result = 0;
-        goto complete;
-    }
-
-    result = axolotl_pre_key_load_key(builder->store, &our_pre_key, pre_key_id);
-    if(result < 0) {
-        goto complete;
-    }
-
-    result = axolotl_identity_get_key_pair(builder->store, &our_identity_key);
-    if(result < 0) {
-        goto complete;
-    }
-
-    result = bob_axolotl_parameters_create(
-            &parameters,
-            our_identity_key,
-            session_pre_key_get_key_pair(our_pre_key),
-            0,
-            session_pre_key_get_key_pair(our_pre_key),
-            pre_key_whisper_message_get_identity_key(message),
-            pre_key_whisper_message_get_base_key(message));
-    if(result < 0) {
-        goto complete;
-    }
-
-    if(!session_record_is_fresh(record)) {
-        session_record_archive_current_state(record);
-    }
-
-    state = session_record_get_state(record);
-
-    result = ratcheting_session_bob_initialize(
-            state,
-            pre_key_whisper_message_get_message_version(message),
-            parameters, builder->global_context);
-    if(result < 0) {
-        goto complete;
-    }
-
-    result = axolotl_identity_get_local_registration_id(builder->store, &local_registration_id);
-    if(result < 0) {
-        goto complete;
-    }
-
-    session_state_set_local_registration_id(state, local_registration_id);
-    session_state_set_remote_registration_id(state,
-            pre_key_whisper_message_get_registration_id(message));
-    session_state_set_alice_base_key(state,
-            pre_key_whisper_message_get_base_key(message));;
-
-    if(pre_key_whisper_message_get_pre_key_id(message) != PRE_KEY_MEDIUM_MAX_VALUE) {
-        unsigned_pre_key_id_result = pre_key_whisper_message_get_pre_key_id(message);
-        result = 1;
-    }
-    else {
-        result = 0;
-    }
-
-complete:
-    AXOLOTL_UNREF(parameters);
-    AXOLOTL_UNREF(our_identity_key);
-    AXOLOTL_UNREF(our_pre_key);
-    if(result >= 0) {
-        *unsigned_pre_key_id = unsigned_pre_key_id_result;
-    }
-    return result;
-}
-
-static int session_builder_process_pre_key_whisper_message_v3(session_builder *builder,
-        session_record *record, pre_key_whisper_message *message, uint32_t *unsigned_pre_key_id)
+static int session_builder_process_pre_key_signal_message_v3(session_builder *builder,
+        session_record *record, pre_key_signal_message *message, uint32_t *unsigned_pre_key_id)
 {
     int result = 0;
     uint32_t unsigned_pre_key_id_result = 0;
     session_signed_pre_key *our_signed_pre_key = 0;
     ratchet_identity_key_pair *our_identity_key = 0;
-    bob_axolotl_parameters *parameters = 0;
+    bob_signal_protocol_parameters *parameters = 0;
     session_pre_key *session_our_one_time_pre_key = 0;
     ec_key_pair *our_one_time_pre_key = 0;
     session_state *state = 0;
     uint32_t local_registration_id = 0;
 
     int has_session_state = session_record_has_session_state(record,
-            pre_key_whisper_message_get_message_version(message),
-            pre_key_whisper_message_get_base_key(message));
+            pre_key_signal_message_get_message_version(message),
+            pre_key_signal_message_get_base_key(message));
     if(has_session_state) {
-        axolotl_log(builder->global_context, AX_LOG_INFO, "We've already setup a session for this V3 message, letting bundled message fall through...");
+        signal_log(builder->global_context, SG_LOG_INFO, "We've already setup a session for this V3 message, letting bundled message fall through...");
         result = 0;
         goto complete;
     }
 
-    result = axolotl_signed_pre_key_load_key(builder->store,
+    result = signal_protocol_signed_pre_key_load_key(builder->store,
             &our_signed_pre_key,
-            pre_key_whisper_message_get_signed_pre_key_id(message));
+            pre_key_signal_message_get_signed_pre_key_id(message));
     if(result < 0) {
         goto complete;
     }
 
-    result = axolotl_identity_get_key_pair(builder->store, &our_identity_key);
+    result = signal_protocol_identity_get_key_pair(builder->store, &our_identity_key);
     if(result < 0) {
         goto complete;
     }
 
-    if(pre_key_whisper_message_has_pre_key_id(message)) {
-        result = axolotl_pre_key_load_key(builder->store,
+    if(pre_key_signal_message_has_pre_key_id(message)) {
+        result = signal_protocol_pre_key_load_key(builder->store,
                 &session_our_one_time_pre_key,
-                pre_key_whisper_message_get_pre_key_id(message));
+                pre_key_signal_message_get_pre_key_id(message));
         if(result < 0) {
             goto complete;
         }
         our_one_time_pre_key = session_pre_key_get_key_pair(session_our_one_time_pre_key);
     }
 
-    result = bob_axolotl_parameters_create(
+    result = bob_signal_protocol_parameters_create(
             &parameters,
             our_identity_key,
             session_signed_pre_key_get_key_pair(our_signed_pre_key),
             our_one_time_pre_key,
             session_signed_pre_key_get_key_pair(our_signed_pre_key),
-            pre_key_whisper_message_get_identity_key(message),
-            pre_key_whisper_message_get_base_key(message));
+            pre_key_signal_message_get_identity_key(message),
+            pre_key_signal_message_get_base_key(message));
     if(result < 0) {
         goto complete;
     }
 
     if(!session_record_is_fresh(record)) {
-        session_record_archive_current_state(record);
+        result = session_record_archive_current_state(record);
+        if(result < 0) {
+            goto complete;
+        }
     }
 
     state = session_record_get_state(record);
 
     result = ratcheting_session_bob_initialize(
-            state,
-            pre_key_whisper_message_get_message_version(message),
-            parameters, builder->global_context);
+            state, parameters,
+            builder->global_context);
     if(result < 0) {
         goto complete;
     }
 
-    result = axolotl_identity_get_local_registration_id(builder->store, &local_registration_id);
+    result = signal_protocol_identity_get_local_registration_id(builder->store, &local_registration_id);
     if(result < 0) {
         goto complete;
     }
 
     session_state_set_local_registration_id(state, local_registration_id);
     session_state_set_remote_registration_id(state,
-            pre_key_whisper_message_get_registration_id(message));
+            pre_key_signal_message_get_registration_id(message));
     session_state_set_alice_base_key(state,
-            pre_key_whisper_message_get_base_key(message));;
+            pre_key_signal_message_get_base_key(message));;
 
-    if(pre_key_whisper_message_has_pre_key_id(message) &&
-            pre_key_whisper_message_get_pre_key_id(message) != PRE_KEY_MEDIUM_MAX_VALUE) {
-        unsigned_pre_key_id_result = pre_key_whisper_message_get_pre_key_id(message);
+    if(pre_key_signal_message_has_pre_key_id(message) &&
+            pre_key_signal_message_get_pre_key_id(message) != PRE_KEY_MEDIUM_MAX_VALUE) {
+        unsigned_pre_key_id_result = pre_key_signal_message_get_pre_key_id(message);
         result = 1;
     }
     else {
@@ -298,10 +178,10 @@ static int session_builder_process_pre_key_whisper_message_v3(session_builder *b
     }
 
 complete:
-    AXOLOTL_UNREF(parameters);
-    AXOLOTL_UNREF(our_identity_key);
-    AXOLOTL_UNREF(our_signed_pre_key);
-    AXOLOTL_UNREF(session_our_one_time_pre_key);
+    SIGNAL_UNREF(parameters);
+    SIGNAL_UNREF(our_identity_key);
+    SIGNAL_UNREF(our_signed_pre_key);
+    SIGNAL_UNREF(session_our_one_time_pre_key);
     if(result >= 0) {
         *unsigned_pre_key_id = unsigned_pre_key_id_result;
     }
@@ -314,10 +194,9 @@ int session_builder_process_pre_key_bundle(session_builder *builder, session_pre
     session_record *record = 0;
     ec_key_pair *our_base_key = 0;
     ratchet_identity_key_pair *our_identity_key = 0;
-    alice_axolotl_parameters *parameters = 0;
+    alice_signal_protocol_parameters *parameters = 0;
     ec_public_key *signed_pre_key = 0;
     ec_public_key *pre_key = 0;
-    int supports_v3 = 0;
     ec_public_key *their_identity_key = 0;
     ec_public_key *their_signed_pre_key = 0;
     ec_public_key *their_one_time_pre_key = 0;
@@ -329,16 +208,16 @@ int session_builder_process_pre_key_bundle(session_builder *builder, session_pre
     assert(builder);
     assert(builder->store);
     assert(bundle);
-    axolotl_lock(builder->global_context);
+    signal_lock(builder->global_context);
 
-    result = axolotl_identity_is_trusted_identity(builder->store,
-            builder->remote_address->name, builder->remote_address->name_len,
+    result = signal_protocol_identity_is_trusted_identity(builder->store,
+            builder->remote_address,
             session_pre_key_bundle_get_identity_key(bundle));
     if(result < 0) {
         goto complete;
     }
     if(result == 0) {
-        result = AX_ERR_UNTRUSTED_IDENTITY;
+        result = SG_ERR_UNTRUSTED_IDENTITY;
         goto complete;
     }
 
@@ -347,40 +226,38 @@ int session_builder_process_pre_key_bundle(session_builder *builder, session_pre
 
     if(signed_pre_key) {
         ec_public_key *identity_key = session_pre_key_bundle_get_identity_key(bundle);
-        axolotl_buffer *signature = session_pre_key_bundle_get_signed_pre_key_signature(bundle);
+        signal_buffer *signature = session_pre_key_bundle_get_signed_pre_key_signature(bundle);
 
-        axolotl_buffer *serialized_signed_pre_key = 0;
+        signal_buffer *serialized_signed_pre_key = 0;
         result = ec_public_key_serialize(&serialized_signed_pre_key, signed_pre_key);
         if(result < 0) {
             goto complete;
         }
 
         result = curve_verify_signature(identity_key,
-                axolotl_buffer_data(serialized_signed_pre_key),
-                axolotl_buffer_len(serialized_signed_pre_key),
-                axolotl_buffer_data(signature),
-                axolotl_buffer_len(signature));
+                signal_buffer_data(serialized_signed_pre_key),
+                signal_buffer_len(serialized_signed_pre_key),
+                signal_buffer_data(signature),
+                signal_buffer_len(signature));
 
-        axolotl_buffer_free(serialized_signed_pre_key);
+        signal_buffer_free(serialized_signed_pre_key);
 
         if(result == 0) {
-            axolotl_log(builder->global_context, AX_LOG_WARNING, "invalid signature on device key!");
-            result = AX_ERR_INVALID_KEY;
+            signal_log(builder->global_context, SG_LOG_WARNING, "invalid signature on device key!");
+            result = SG_ERR_INVALID_KEY;
         }
         if(result < 0) {
             goto complete;
         }
     }
 
-    if(!signed_pre_key && !pre_key) {
-        result = AX_ERR_INVALID_KEY;
-        axolotl_log(builder->global_context, AX_LOG_WARNING, "both signed and unsigned pre keys are absent!");
+    if(!signed_pre_key) {
+        result = SG_ERR_INVALID_KEY;
+        signal_log(builder->global_context, SG_LOG_WARNING, "no signed pre key!");
         goto complete;
     }
 
-    supports_v3 = (signed_pre_key != 0);
-
-    result = axolotl_session_load_session(builder->store, &record, builder->remote_address);
+    result = signal_protocol_session_load_session(builder->store, &record, builder->remote_address);
     if(result < 0) {
         goto complete;
     }
@@ -391,8 +268,7 @@ int session_builder_process_pre_key_bundle(session_builder *builder, session_pre
     }
 
     their_identity_key = session_pre_key_bundle_get_identity_key(bundle);
-    their_signed_pre_key = supports_v3 ? signed_pre_key : pre_key;
-
+    their_signed_pre_key = signed_pre_key;
     their_one_time_pre_key = pre_key;
 
     if(their_one_time_pre_key) {
@@ -400,31 +276,33 @@ int session_builder_process_pre_key_bundle(session_builder *builder, session_pre
         their_one_time_pre_key_id = session_pre_key_bundle_get_pre_key_id(bundle);
     }
 
-    result = axolotl_identity_get_key_pair(builder->store, &our_identity_key);
+    result = signal_protocol_identity_get_key_pair(builder->store, &our_identity_key);
     if(result < 0) {
         goto complete;
     }
 
-    result = alice_axolotl_parameters_create(&parameters,
+    result = alice_signal_protocol_parameters_create(&parameters,
             our_identity_key,
             our_base_key,
             their_identity_key,
             their_signed_pre_key,
-            supports_v3 ? their_one_time_pre_key : 0,
+            their_one_time_pre_key,
             their_signed_pre_key);
     if(result < 0) {
         goto complete;
     }
 
     if(!session_record_is_fresh(record)) {
-        session_record_archive_current_state(record);
+        result = session_record_archive_current_state(record);
+        if(result < 0) {
+            goto complete;
+        }
     }
 
     state = session_record_get_state(record);
 
     result = ratcheting_session_alice_initialize(
-            state,
-            supports_v3 ? 3 : 2, parameters,
+            state, parameters,
             builder->global_context);
     if(result < 0) {
         goto complete;
@@ -435,7 +313,7 @@ int session_builder_process_pre_key_bundle(session_builder *builder, session_pre
             session_pre_key_bundle_get_signed_pre_key_id(bundle),
             ec_key_pair_get_public(our_base_key));
 
-    result = axolotl_identity_get_local_registration_id(builder->store, &local_registration_id);
+    result = signal_protocol_identity_get_local_registration_id(builder->store, &local_registration_id);
     if(result < 0) {
         goto complete;
     }
@@ -445,417 +323,24 @@ int session_builder_process_pre_key_bundle(session_builder *builder, session_pre
             session_pre_key_bundle_get_registration_id(bundle));
     session_state_set_alice_base_key(state, ec_key_pair_get_public(our_base_key));
 
-    axolotl_session_store_session(builder->store, builder->remote_address, record);
-    axolotl_identity_save_identity(builder->store,
-            builder->remote_address->name, builder->remote_address->name_len,
-            their_identity_key);
-
-complete:
-    AXOLOTL_UNREF(record);
-    AXOLOTL_UNREF(our_base_key);
-    AXOLOTL_UNREF(our_identity_key);
-    AXOLOTL_UNREF(parameters);
-    axolotl_unlock(builder->global_context);
-    return result;
-}
-
-int session_builder_process_key_exchange_message(session_builder *builder, key_exchange_message *message, key_exchange_message **response_message)
-{
-    int result = 0;
-    key_exchange_message *result_response_message = 0;
-
-    assert(builder);
-    assert(builder->store);
-    axolotl_lock(builder->global_context);
-
-    result = axolotl_identity_is_trusted_identity(builder->store,
-            builder->remote_address->name, builder->remote_address->name_len,
-            key_exchange_message_get_identity_key(message));
-    if(result < 0) {
-        goto complete;
-    }
-    if(result == 0) {
-        result = AX_ERR_UNTRUSTED_IDENTITY;
-        goto complete;
-    }
-    result = 0;
-
-    if(key_exchange_message_is_initiate(message)) {
-        result = session_builder_process_initiate(builder, message, &result_response_message);
-    }
-    else {
-        result = session_builder_process_response(builder, message);
-    }
-
-complete:
-    if(result >= 0) {
-        *response_message = result_response_message;
-    }
-    else {
-        AXOLOTL_UNREF(result_response_message);
-    }
-    axolotl_unlock(builder->global_context);
-    return result;
-}
-
-static int session_builder_process_initiate(session_builder *builder, key_exchange_message *message, key_exchange_message **response_message)
-{
-    int result = 0;
-    key_exchange_message *result_response_message = 0;
-
-    uint32_t flags = KEY_EXCHANGE_RESPONSE_FLAG;
-    session_record *record = 0;
-    session_state *state = 0;
-    ratchet_identity_key_pair *identity_key_pair = 0;
-    ec_key_pair *our_base_key = 0;
-    ec_key_pair *our_ratchet_key = 0;
-    symmetric_axolotl_parameters *parameters = 0;
-    ratchet_identity_key_pair *parameters_identity_key = 0;
-    ec_key_pair *parameters_base_key = 0;
-    axolotl_buffer *parameters_public_base_key_serialized = 0;
-    ec_key_pair *parameters_ratchet_key = 0;
-    axolotl_buffer *base_key_signature = 0;
-
-    result = axolotl_session_load_session(builder->store, &record, builder->remote_address);
+    result = signal_protocol_session_store_session(builder->store, builder->remote_address, record);
     if(result < 0) {
         goto complete;
     }
 
-    if(key_exchange_message_get_version(message) >= 3) {
-        ec_public_key *message_identity_key = key_exchange_message_get_identity_key(message);
-        ec_public_key *message_base_key = key_exchange_message_get_base_key(message);
-        axolotl_buffer *message_base_key_serialized = 0;
-        uint8_t *message_base_key_signature = 0;
-
-        ec_public_key_serialize(&message_base_key_serialized, message_base_key);
-
-        message_base_key_signature = key_exchange_message_get_base_key_signature(message);
-
-        result = curve_verify_signature(message_identity_key,
-                axolotl_buffer_data(message_base_key_serialized),
-                axolotl_buffer_len(message_base_key_serialized),
-                message_base_key_signature, CURVE_SIGNATURE_LEN);
-        axolotl_buffer_free(message_base_key_serialized);
-        if(result < 0) {
-            goto complete;
-        }
-        if(result != 1) {
-            axolotl_log(builder->global_context, AX_LOG_WARNING, "Bad signature!");
-            result = AX_ERR_INVALID_KEY;
-            goto complete;
-        }
-    }
-
-    state = session_record_get_state(record);
-    if(!session_state_has_pending_key_exchange(state)) {
-        result = axolotl_identity_get_key_pair(builder->store, &identity_key_pair);
-        if(result < 0) {
-            goto complete;
-        }
-
-        result = curve_generate_key_pair(builder->global_context, &our_base_key);
-        if(result < 0) {
-            goto complete;
-        }
-
-        result = curve_generate_key_pair(builder->global_context, &our_ratchet_key);
-        if(result < 0) {
-            goto complete;
-        }
-
-        result = symmetric_axolotl_parameters_create(
-                &parameters,
-                identity_key_pair,
-                our_base_key,
-                our_ratchet_key,
-                key_exchange_message_get_base_key(message),
-                key_exchange_message_get_ratchet_key(message),
-                key_exchange_message_get_identity_key(message));
-        if(result < 0) {
-            goto complete;
-        }
-    }
-    else {
-        result = symmetric_axolotl_parameters_create(
-                &parameters,
-                session_state_get_pending_key_exchange_identity_key(state),
-                session_state_get_pending_key_exchange_base_key(state),
-                session_state_get_pending_key_exchange_ratchet_key(state),
-                key_exchange_message_get_base_key(message),
-                key_exchange_message_get_ratchet_key(message),
-                key_exchange_message_get_identity_key(message));
-        if(result < 0) {
-            goto complete;
-        }
-
-        flags |= KEY_EXCHANGE_SIMULTAENOUS_INITIATE_FLAG;
-    }
-
-    if(!session_record_is_fresh(record)) {
-        session_record_archive_current_state(record);
-    }
-
-    state = session_record_get_state(record);
-    result = ratcheting_session_symmetric_initialize(state,
-            MIN(key_exchange_message_get_max_version(message), (uint32_t)CIPHERTEXT_CURRENT_VERSION),
-            parameters, builder->global_context);
-    if(result < 0) {
-        goto complete;
-    }
-
-    result = axolotl_session_store_session(builder->store, builder->remote_address, record);
-    if(result < 0) {
-        goto complete;
-    }
-
-    result = axolotl_identity_save_identity(builder->store,
-            builder->remote_address->name, builder->remote_address->name_len,
-            key_exchange_message_get_identity_key(message));
-    if(result < 0) {
-        goto complete;
-    }
-
-    parameters_identity_key = symmetric_axolotl_parameters_get_our_identity_key(parameters);
-    parameters_base_key = symmetric_axolotl_parameters_get_our_base_key(parameters);
-    parameters_ratchet_key = symmetric_axolotl_parameters_get_our_ratchet_key(parameters);
-
-    result = ec_public_key_serialize(&parameters_public_base_key_serialized,
-            ec_key_pair_get_public(parameters_base_key));
-    if(result < 0) {
-        goto complete;
-    }
-
-    result = curve_calculate_signature(builder->global_context,
-            &base_key_signature,
-            ratchet_identity_key_pair_get_private(parameters_identity_key),
-            axolotl_buffer_data(parameters_public_base_key_serialized),
-            axolotl_buffer_len(parameters_public_base_key_serialized));
-    if(result < 0) {
-        goto complete;
-    }
-
-    result = key_exchange_message_create(&result_response_message,
-            session_state_get_session_version(state),
-            key_exchange_message_get_sequence(message),
-            flags,
-            ec_key_pair_get_public(parameters_base_key),
-            axolotl_buffer_data(base_key_signature),
-            ec_key_pair_get_public(parameters_ratchet_key),
-            ratchet_identity_key_pair_get_public(parameters_identity_key));
-
-complete:
-    axolotl_buffer_free(parameters_public_base_key_serialized);
-    axolotl_buffer_free(base_key_signature);
-    AXOLOTL_UNREF(our_base_key);
-    AXOLOTL_UNREF(our_ratchet_key);
-    AXOLOTL_UNREF(identity_key_pair);
-    AXOLOTL_UNREF(parameters);
-    AXOLOTL_UNREF(record);
-    if(result >= 0) {
-        *response_message = result_response_message;
-    }
-    else {
-        AXOLOTL_UNREF(result_response_message);
-    }
-    return result;
-}
-
-static int session_builder_process_response(session_builder *builder, key_exchange_message *message)
-{
-    int result = 0;
-    session_record *record = 0;
-    session_state *state = 0;
-    int has_pending_key_exchange = 0;
-    int is_simultaneous_initiate_response = 0;
-    symmetric_axolotl_parameters *parameters = 0;
-
-    result = axolotl_session_load_session(builder->store, &record, builder->remote_address);
-    if(result < 0) {
-        goto complete;
-    }
-
-    state = session_record_get_state(record);
-    has_pending_key_exchange = session_state_has_pending_key_exchange(state);
-    is_simultaneous_initiate_response = key_exchange_message_is_response_for_simultaneous_initiate(message);
-
-    if(!has_pending_key_exchange ||
-            session_state_get_pending_key_exchange_sequence(state) != key_exchange_message_get_sequence(message)) {
-        axolotl_log(builder->global_context, AX_LOG_INFO, "No matching sequence for response. Is simultaneous initiate response: %d", is_simultaneous_initiate_response);
-        if(!is_simultaneous_initiate_response) {
-            result = AX_ERR_STALE_KEY_EXCHANGE;
-            goto complete;
-        }
-        else  {
-            result = AX_SUCCESS;
-            goto complete;
-        }
-    }
-
-    result = symmetric_axolotl_parameters_create(
-            &parameters,
-            session_state_get_pending_key_exchange_identity_key(state),
-            session_state_get_pending_key_exchange_base_key(state),
-            session_state_get_pending_key_exchange_ratchet_key(state),
-            key_exchange_message_get_base_key(message),
-            key_exchange_message_get_ratchet_key(message),
-            key_exchange_message_get_identity_key(message));
-    if(result < 0) {
-        goto complete;
-    }
-
-    if(!session_record_is_fresh(record)) {
-        session_record_archive_current_state(record);
-    }
-
-    state = session_record_get_state(record);
-    result = ratcheting_session_symmetric_initialize(state,
-            MIN(key_exchange_message_get_max_version(message), (uint32_t)CIPHERTEXT_CURRENT_VERSION),
-            parameters, builder->global_context);
-    if(result < 0) {
-        goto complete;
-    }
-
-    result = axolotl_session_store_session(builder->store, builder->remote_address, record);
-    if(result < 0) {
-        goto complete;
-    }
-
-    if(session_state_get_session_version(state) >= 3) {
-        ec_public_key *message_identity_key = key_exchange_message_get_identity_key(message);
-        ec_public_key *message_base_key = key_exchange_message_get_base_key(message);
-        axolotl_buffer *message_base_key_serialized = 0;
-        uint8_t *message_base_key_signature = 0;
-
-        ec_public_key_serialize(&message_base_key_serialized, message_base_key);
-
-        message_base_key_signature = key_exchange_message_get_base_key_signature(message);
-
-        result = curve_verify_signature(message_identity_key,
-                axolotl_buffer_data(message_base_key_serialized),
-                axolotl_buffer_len(message_base_key_serialized),
-                message_base_key_signature, CURVE_SIGNATURE_LEN);
-        axolotl_buffer_free(message_base_key_serialized);
-        if(result < 0) {
-            goto complete;
-        }
-        if(result != 1) {
-            axolotl_log(builder->global_context, AX_LOG_WARNING, "Base key signature doesn't match!");
-            result = AX_ERR_INVALID_KEY;
-            goto complete;
-        }
-    }
-
-    result = axolotl_session_store_session(builder->store, builder->remote_address, record);
-    if(result < 0) {
-        goto complete;
-    }
-
-    result = axolotl_identity_save_identity(builder->store,
-            builder->remote_address->name, builder->remote_address->name_len,
-            key_exchange_message_get_identity_key(message));
-    if(result < 0) {
-        goto complete;
-    }
-
-complete:
-    AXOLOTL_UNREF(parameters);
-    AXOLOTL_UNREF(record);
-    return result;
-}
-
-int session_builder_process(session_builder *builder, key_exchange_message **message)
-{
-    int result = 0;
-    key_exchange_message *result_message = 0;
-    int random_value = 0;
-    uint32_t sequence = 0;
-    uint32_t flags = KEY_EXCHANGE_INITIATE_FLAG;
-    ec_key_pair *base_key = 0;
-    ec_key_pair *ratchet_key = 0;
-    ratchet_identity_key_pair *identity_key = 0;
-    axolotl_buffer *base_key_public_serialized = 0;
-    axolotl_buffer *base_key_signature = 0;
-    session_record *record = 0;
-    session_state *state = 0;
-
-    assert(builder);
-    assert(builder->store);
-    axolotl_lock(builder->global_context);
-
-    result = axolotl_key_helper_get_random_sequence(&random_value, 65534, builder->global_context);
-    if(result < 0) {
-        goto complete;
-    }
-    sequence = ((uint32_t)random_value) + 1;
-
-    result = curve_generate_key_pair(builder->global_context, &base_key);
-    if(result < 0) {
-        goto complete;
-    }
-
-    result = curve_generate_key_pair(builder->global_context, &ratchet_key);
-    if(result < 0) {
-        goto complete;
-    }
-
-    result = axolotl_identity_get_key_pair(builder->store, &identity_key);
-    if(result < 0) {
-        goto complete;
-    }
-
-    result = ec_public_key_serialize(&base_key_public_serialized, ec_key_pair_get_public(base_key));
-    if(result < 0) {
-        goto complete;
-    }
-
-    result = curve_calculate_signature(builder->global_context, &base_key_signature,
-            ratchet_identity_key_pair_get_private(identity_key),
-            axolotl_buffer_data(base_key_public_serialized),
-            axolotl_buffer_len(base_key_public_serialized));
-    if(result < 0) {
-        goto complete;
-    }
-
-    if(axolotl_buffer_len(base_key_signature) != CURVE_SIGNATURE_LEN) {
-        result = AX_ERR_UNKNOWN;
-        goto complete;
-    }
-
-    result = axolotl_session_load_session(builder->store, &record, builder->remote_address);
-    if(result < 0) {
-        goto complete;
-    }
-
-    state = session_record_get_state(record);
-    session_state_set_pending_key_exchange(state, sequence, base_key, ratchet_key, identity_key);
-
-    result = axolotl_session_store_session(builder->store, builder->remote_address, record);
+    result = signal_protocol_identity_save_identity(builder->store,
+            builder->remote_address,
+            their_identity_key);
     if(result < 0) {
         goto complete;
     }
 
-    result = key_exchange_message_create(&result_message,
-            2, sequence, flags,
-            ec_key_pair_get_public(base_key),
-            axolotl_buffer_data(base_key_signature),
-            ec_key_pair_get_public(ratchet_key),
-            ratchet_identity_key_pair_get_public(identity_key));
-
 complete:
-    AXOLOTL_UNREF(record);
-    axolotl_buffer_free(base_key_signature);
-    axolotl_buffer_free(base_key_public_serialized);
-    AXOLOTL_UNREF(identity_key);
-    AXOLOTL_UNREF(ratchet_key);
-    AXOLOTL_UNREF(base_key);
-    if(result >= 0) {
-        *message = result_message;
-    }
-    else {
-        result = AX_ERR_INVALID_KEY;
-        AXOLOTL_UNREF(result_message);
-    }
-    axolotl_unlock(builder->global_context);
+    SIGNAL_UNREF(record);
+    SIGNAL_UNREF(our_base_key);
+    SIGNAL_UNREF(our_identity_key);
+    SIGNAL_UNREF(parameters);
+    signal_unlock(builder->global_context);
     return result;
 }
 
diff --git a/libs/libaxolotl/src/session_builder.h b/libs/libaxolotl/src/session_builder.h
index cfd67a1824..6e56ba24f0 100644
--- a/libs/libaxolotl/src/session_builder.h
+++ b/libs/libaxolotl/src/session_builder.h
@@ -2,7 +2,7 @@
 #define SESSION_BUILDER_H
 
 #include <stdint.h>
-#include "axolotl_types.h"
+#include "signal_protocol_types.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -13,12 +13,11 @@ extern "C" {
  * Once a session has been established, session_cipher
  * can be used to encrypt/decrypt messages in that session.
  *
- * Sessions are built from one of three different possible vectors:
+ * Sessions are built from one these different possible vectors:
  * - A session_pre_key_bundle retrieved from a server
- * - A pre_key_whisper_message received from a client
- * - A key_exchange_message sent to or received from a client
+ * - A pre_key_signal_message received from a client
  *
- * Sessions are constructed per AXOLOTL address
+ * Sessions are constructed per Signal Protocol address
  * (recipient name + device ID tuple). Remote logical users are identified by
  * their recipient name, and each logical recipient can have multiple
  * physical devices.
@@ -33,65 +32,25 @@ extern "C" {
  * When finished, free the returned instance by calling session_builder_free().
  *
  * @param builder set to a freshly allocated session builder instance
- * @param store the axolotl_store_context to store all state information in
+ * @param store the signal_protocol_store_context to store all state information in
  * @param remote_address the address of the remote user to build a session with
  * @param global_context the global library context
  * @return 0 on success, or negative on failure
  */
 int session_builder_create(session_builder **builder,
-        axolotl_store_context *store, const axolotl_address *remote_address,
-        axolotl_context *global_context);
-
-/**
- * Build a new session from a received pre_key_whisper_message.
- *
- * After a session is constructed in this way, the embedded whisper_message
- * can be decrypted.
- *
- * @param message The received pre_key_whisper_message.
- * @param unsigned_pre_key_id set to the unsigned pre key ID, if available.
- *     Return value indicates whether or not this value is available.
- * @retval 0 Success, no unsigned pre key value available
- * @retval 1 Success, an unsigned pre key is available
- * @retval AX_ERR_INVALID_KEY_ID when there is no local pre_key_record that
- *                               corresponds to the PreKey ID in the message.
- * @retval AX_ERR_INVALID_KEY when the message is formatted incorrectly.
- * @retval AX_ERR_UNTRUSTED_IDENTITY when the identity key of the sender is untrusted.
- */
-int session_builder_process_pre_key_whisper_message(session_builder *builder,
-        session_record *record, pre_key_whisper_message *message, uint32_t *unsigned_pre_key_id);
+        signal_protocol_store_context *store, const signal_protocol_address *remote_address,
+        signal_context *global_context);
 
 /**
  * Build a new session from a session_pre_key_bundle retrieved from a server.
  *
  * @param bundle A pre key bundle for the destination recipient, retrieved from a server.
- * @retval AX_SUCCESS Success
- * @retval AX_ERR_INVALID_KEY when the session_pre_key_bundle is badly formatted.
- * @retval AX_ERR_UNTRUSTED_IDENTITY when the sender's identity key is not trusted.
+ * @retval SG_SUCCESS Success
+ * @retval SG_ERR_INVALID_KEY when the session_pre_key_bundle is badly formatted.
+ * @retval SG_ERR_UNTRUSTED_IDENTITY when the sender's identity key is not trusted.
  */
 int session_builder_process_pre_key_bundle(session_builder *builder, session_pre_key_bundle *bundle);
 
-/**
- * Build a new session from a key_exchange_message received from a remote client.
- *
- * @param message The received key_exchange_message.
- * @param response_message Set to the key_exchange_message to respond with,
- *     or set to 0 if no response is necessary.
- * @retval AX_SUCCESS Success
- * @retval AX_ERR_INVALID_KEY if the received key_exchange_message is badly formatted.
- * @retval AX_ERR_UNTRUSTED_IDENTITY
- * @retval AX_ERR_STALE_KEY_EXCHANGE
- */
-int session_builder_process_key_exchange_message(session_builder *builder, key_exchange_message *message, key_exchange_message **response_message);
-
-/**
- * Initiate a new session by sending an initial key_exchange_message to the recipient.
- *
- * @param message Set to the key_exchange_message to deliver.
- * @return AX_SUCCESS on success, negative on error
- */
-int session_builder_process(session_builder *builder, key_exchange_message **message);
-
 void session_builder_free(session_builder *builder);
 
 #ifdef __cplusplus
diff --git a/libs/libaxolotl/src/session_builder_internal.h b/libs/libaxolotl/src/session_builder_internal.h
new file mode 100644
index 0000000000..2bf8dba4e0
--- /dev/null
+++ b/libs/libaxolotl/src/session_builder_internal.h
@@ -0,0 +1,26 @@
+#ifndef SESSION_BUILDER_INTERNAL_H
+#define SESSION_BUILDER_INTERNAL_H
+
+#include <stdint.h>
+#include "signal_protocol_types.h"
+
+/**
+ * Build a new session from a received pre_key_signal_message.
+ *
+ * After a session is constructed in this way, the embedded signal_message
+ * can be decrypted.
+ *
+ * @param message The received pre_key_signal_message.
+ * @param unsigned_pre_key_id set to the unsigned pre key ID, if available.
+ *     Return value indicates whether or not this value is available.
+ * @retval 0 Success, no unsigned pre key value available
+ * @retval 1 Success, an unsigned pre key is available
+ * @retval SG_ERR_INVALID_KEY_ID when there is no local pre_key_record that
+ *                               corresponds to the PreKey ID in the message.
+ * @retval SG_ERR_INVALID_KEY when the message is formatted incorrectly.
+ * @retval SG_ERR_UNTRUSTED_IDENTITY when the identity key of the sender is untrusted.
+ */
+int session_builder_process_pre_key_signal_message(session_builder *builder,
+        session_record *record, pre_key_signal_message *message, uint32_t *unsigned_pre_key_id);
+
+#endif /* SESSION_BUILDER_INTERNAL_H */
diff --git a/libs/libaxolotl/src/session_cipher.c b/libs/libaxolotl/src/session_cipher.c
index c2065ef5dc..3e80788c62 100644
--- a/libs/libaxolotl/src/session_cipher.c
+++ b/libs/libaxolotl/src/session_cipher.c
@@ -2,28 +2,29 @@
 
 #include <assert.h>
 #include <string.h>
-#include "axolotl_internal.h"
 #include "session_builder.h"
+#include "session_builder_internal.h"
 #include "session_record.h"
 #include "session_state.h"
 #include "ratchet.h"
 #include "protocol.h"
+#include "signal_protocol_internal.h"
 
 struct session_cipher
 {
-    axolotl_store_context *store;
-    const axolotl_address *remote_address;
+    signal_protocol_store_context *store;
+    const signal_protocol_address *remote_address;
     session_builder *builder;
-    axolotl_context *global_context;
-    int (*decrypt_callback)(session_cipher *cipher, axolotl_buffer *plaintext, void *decrypt_context);
+    signal_context *global_context;
+    int (*decrypt_callback)(session_cipher *cipher, signal_buffer *plaintext, void *decrypt_context);
     int inside_callback;
     void *user_data;
 };
 
-static int session_cipher_decrypt_from_record_and_whisper_message(session_cipher *cipher,
-        session_record *record, whisper_message *ciphertext, axolotl_buffer **plaintext);
-static int session_cipher_decrypt_from_state_and_whisper_message(session_cipher *cipher,
-        session_state *state, whisper_message *ciphertext, axolotl_buffer **plaintext);
+static int session_cipher_decrypt_from_record_and_signal_message(session_cipher *cipher,
+        session_record *record, signal_message *ciphertext, signal_buffer **plaintext);
+static int session_cipher_decrypt_from_state_and_signal_message(session_cipher *cipher,
+        session_state *state, signal_message *ciphertext, signal_buffer **plaintext);
 
 static int session_cipher_get_or_create_chain_key(session_cipher *cipher,
         ratchet_chain_key **chain_key,
@@ -31,22 +32,22 @@ static int session_cipher_get_or_create_chain_key(session_cipher *cipher,
 static int session_cipher_get_or_create_message_keys(ratchet_message_keys *message_keys,
         session_state *state, ec_public_key *their_ephemeral,
         ratchet_chain_key *chain_key, uint32_t counter,
-        axolotl_context *global_context);
+        signal_context *global_context);
 
 static int session_cipher_get_ciphertext(session_cipher *cipher,
-        axolotl_buffer **ciphertext,
+        signal_buffer **ciphertext,
         uint32_t version, ratchet_message_keys *message_keys,
         const uint8_t *plaintext, size_t plaintext_len);
 static int session_cipher_get_plaintext(session_cipher *cipher,
-        axolotl_buffer **plaintext,
+        signal_buffer **plaintext,
         uint32_t version, ratchet_message_keys *message_keys,
         const uint8_t *ciphertext, size_t ciphertext_len);
 
-static int session_cipher_decrypt_callback(session_cipher *cipher, axolotl_buffer *plaintext, void *decrypt_context);
+static int session_cipher_decrypt_callback(session_cipher *cipher, signal_buffer *plaintext, void *decrypt_context);
 
 int session_cipher_create(session_cipher **cipher,
-        axolotl_store_context *store, const axolotl_address *remote_address,
-        axolotl_context *global_context)
+        signal_protocol_store_context *store, const signal_protocol_address *remote_address,
+        signal_context *global_context)
 {
     int result = 0;
     session_builder *builder = 0;
@@ -62,7 +63,7 @@ int session_cipher_create(session_cipher **cipher,
 
     result_cipher = malloc(sizeof(session_cipher));
     if(!result_cipher) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
     memset(result_cipher, 0, sizeof(session_cipher));
 
@@ -88,7 +89,7 @@ void *session_cipher_get_user_data(session_cipher *cipher)
 }
 
 void session_cipher_set_decryption_callback(session_cipher *cipher,
-        int (*callback)(session_cipher *cipher, axolotl_buffer *plaintext, void *decrypt_context))
+        int (*callback)(session_cipher *cipher, signal_buffer *plaintext, void *decrypt_context))
 {
     assert(cipher);
     cipher->decrypt_callback = callback;
@@ -107,37 +108,37 @@ int session_cipher_encrypt(session_cipher *cipher,
     ec_public_key *sender_ephemeral = 0;
     uint32_t previous_counter = 0;
     uint32_t session_version = 0;
-    axolotl_buffer *ciphertext = 0;
+    signal_buffer *ciphertext = 0;
     uint32_t chain_key_index = 0;
     ec_public_key *local_identity_key = 0;
     ec_public_key *remote_identity_key = 0;
-    whisper_message *message = 0;
-    pre_key_whisper_message *pre_key_message = 0;
+    signal_message *message = 0;
+    pre_key_signal_message *pre_key_message = 0;
     uint8_t *ciphertext_data = 0;
     size_t ciphertext_len = 0;
 
     assert(cipher);
-    axolotl_lock(cipher->global_context);
+    signal_lock(cipher->global_context);
 
     if(cipher->inside_callback == 1) {
-        result = AX_ERR_INVAL;
+        result = SG_ERR_INVAL;
         goto complete;
     }
 
-    result = axolotl_session_load_session(cipher->store, &record, cipher->remote_address);
+    result = signal_protocol_session_load_session(cipher->store, &record, cipher->remote_address);
     if(result < 0) {
         goto complete;
     }
 
     state = session_record_get_state(record);
     if(!state) {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
     chain_key = session_state_get_sender_chain_key(state);
     if(!chain_key) {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
@@ -148,7 +149,7 @@ int session_cipher_encrypt(session_cipher *cipher,
 
     sender_ephemeral = session_state_get_sender_ratchet_key(state);
     if(!sender_ephemeral) {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
@@ -162,24 +163,24 @@ int session_cipher_encrypt(session_cipher *cipher,
     if(result < 0) {
         goto complete;
     }
-    ciphertext_data = axolotl_buffer_data(ciphertext);
-    ciphertext_len = axolotl_buffer_len(ciphertext);
+    ciphertext_data = signal_buffer_data(ciphertext);
+    ciphertext_len = signal_buffer_len(ciphertext);
 
     chain_key_index = ratchet_chain_key_get_index(chain_key);
 
     local_identity_key = session_state_get_local_identity_key(state);
     if(!local_identity_key) {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
     remote_identity_key = session_state_get_remote_identity_key(state);
     if(!remote_identity_key) {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
-    result = whisper_message_create(&message,
+    result = signal_message_create(&message,
             session_version,
             message_keys.mac_key, sizeof(message_keys.mac_key),
             sender_ephemeral,
@@ -206,11 +207,11 @@ int session_cipher_encrypt(session_cipher *cipher,
         base_key = session_state_unacknowledged_pre_key_message_get_base_key(state);
 
         if(!base_key) {
-            result = AX_ERR_UNKNOWN;
+            result = SG_ERR_UNKNOWN;
             goto complete;
         }
 
-        result = pre_key_whisper_message_create(&pre_key_message,
+        result = pre_key_signal_message_create(&pre_key_message,
                 session_version, local_registration_id, (has_pre_key_id ? &pre_key_id : 0),
                 signed_pre_key_id, base_key, local_identity_key,
                 message,
@@ -218,7 +219,7 @@ int session_cipher_encrypt(session_cipher *cipher,
         if(result < 0) {
             goto complete;
         }
-        AXOLOTL_UNREF(message);
+        SIGNAL_UNREF(message);
         message = 0;
     }
 
@@ -232,7 +233,7 @@ int session_cipher_encrypt(session_cipher *cipher,
         goto complete;
     }
 
-    result = axolotl_session_store_session(cipher->store, cipher->remote_address, record);
+    result = signal_protocol_session_store_session(cipher->store, cipher->remote_address, record);
 
 complete:
     if(result >= 0) {
@@ -244,48 +245,48 @@ complete:
         }
     }
     else {
-        AXOLOTL_UNREF(pre_key_message);
-        AXOLOTL_UNREF(message);
-    }
-    axolotl_buffer_free(ciphertext);
-    AXOLOTL_UNREF(next_chain_key);
-    AXOLOTL_UNREF(record);
-    axolotl_explicit_bzero(&message_keys, sizeof(ratchet_message_keys));
-    axolotl_unlock(cipher->global_context);
+        SIGNAL_UNREF(pre_key_message);
+        SIGNAL_UNREF(message);
+    }
+    signal_buffer_free(ciphertext);
+    SIGNAL_UNREF(next_chain_key);
+    SIGNAL_UNREF(record);
+    signal_explicit_bzero(&message_keys, sizeof(ratchet_message_keys));
+    signal_unlock(cipher->global_context);
     return result;
 }
 
-int session_cipher_decrypt_pre_key_whisper_message(session_cipher *cipher,
-        pre_key_whisper_message *ciphertext, void *decrypt_context,
-        axolotl_buffer **plaintext)
+int session_cipher_decrypt_pre_key_signal_message(session_cipher *cipher,
+        pre_key_signal_message *ciphertext, void *decrypt_context,
+        signal_buffer **plaintext)
 {
     int result = 0;
-    axolotl_buffer *result_buf = 0;
+    signal_buffer *result_buf = 0;
     session_record *record = 0;
     int has_unsigned_pre_key_id = 0;
     uint32_t unsigned_pre_key_id = 0;
 
     assert(cipher);
-    axolotl_lock(cipher->global_context);
+    signal_lock(cipher->global_context);
 
     if(cipher->inside_callback == 1) {
-        result = AX_ERR_INVAL;
+        result = SG_ERR_INVAL;
         goto complete;
     }
 
-    result = axolotl_session_load_session(cipher->store, &record, cipher->remote_address);
+    result = signal_protocol_session_load_session(cipher->store, &record, cipher->remote_address);
     if(result < 0) {
         goto complete;
     }
 
-    result = session_builder_process_pre_key_whisper_message(cipher->builder, record, ciphertext, &unsigned_pre_key_id);
+    result = session_builder_process_pre_key_signal_message(cipher->builder, record, ciphertext, &unsigned_pre_key_id);
     if(result < 0) {
         goto complete;
     }
     has_unsigned_pre_key_id = result;
 
-    result = session_cipher_decrypt_from_record_and_whisper_message(cipher, record,
-            pre_key_whisper_message_get_whisper_message(ciphertext),
+    result = session_cipher_decrypt_from_record_and_signal_message(cipher, record,
+            pre_key_signal_message_get_signal_message(ciphertext),
             &result_buf);
     if(result < 0) {
         goto complete;
@@ -296,63 +297,63 @@ int session_cipher_decrypt_pre_key_whisper_message(session_cipher *cipher,
         goto complete;
     }
 
-    result = axolotl_session_store_session(cipher->store, cipher->remote_address, record);
+    result = signal_protocol_session_store_session(cipher->store, cipher->remote_address, record);
     if(result < 0) {
         goto complete;
     }
 
     if(has_unsigned_pre_key_id) {
-        result = axolotl_pre_key_remove_key(cipher->store, unsigned_pre_key_id);
+        result = signal_protocol_pre_key_remove_key(cipher->store, unsigned_pre_key_id);
         if(result < 0) {
             goto complete;
         }
     }
 
 complete:
-    AXOLOTL_UNREF(record);
+    SIGNAL_UNREF(record);
     if(result >= 0) {
         *plaintext = result_buf;
     }
     else {
-        axolotl_buffer_free(result_buf);
+        signal_buffer_free(result_buf);
     }
-    axolotl_unlock(cipher->global_context);
+    signal_unlock(cipher->global_context);
     return result;
 }
 
-int session_cipher_decrypt_whisper_message(session_cipher *cipher,
-        whisper_message *ciphertext, void *decrypt_context,
-        axolotl_buffer **plaintext)
+int session_cipher_decrypt_signal_message(session_cipher *cipher,
+        signal_message *ciphertext, void *decrypt_context,
+        signal_buffer **plaintext)
 {
     int result = 0;
-    axolotl_buffer *result_buf = 0;
+    signal_buffer *result_buf = 0;
     session_record *record = 0;
 
     assert(cipher);
-    axolotl_lock(cipher->global_context);
+    signal_lock(cipher->global_context);
 
     if(cipher->inside_callback == 1) {
-        result = AX_ERR_INVAL;
+        result = SG_ERR_INVAL;
         goto complete;
     }
 
-    result = axolotl_session_contains_session(cipher->store, cipher->remote_address);
+    result = signal_protocol_session_contains_session(cipher->store, cipher->remote_address);
     if(result == 0) {
-        axolotl_log(cipher->global_context, AX_LOG_WARNING, "No session for: %s:%d", cipher->remote_address->name, cipher->remote_address->device_id);
-        result = AX_ERR_NO_SESSION;
+        signal_log(cipher->global_context, SG_LOG_WARNING, "No session for: %s:%d", cipher->remote_address->name, cipher->remote_address->device_id);
+        result = SG_ERR_NO_SESSION;
         goto complete;
     }
     else if(result < 0) {
         goto complete;
     }
 
-    result = axolotl_session_load_session(cipher->store, &record,
+    result = signal_protocol_session_load_session(cipher->store, &record,
             cipher->remote_address);
     if(result < 0) {
         goto complete;
     }
 
-    result = session_cipher_decrypt_from_record_and_whisper_message(
+    result = session_cipher_decrypt_from_record_and_signal_message(
             cipher, record, ciphertext, &result_buf);
     if(result < 0) {
         goto complete;
@@ -363,32 +364,32 @@ int session_cipher_decrypt_whisper_message(session_cipher *cipher,
         goto complete;
     }
 
-    result = axolotl_session_store_session(cipher->store,
+    result = signal_protocol_session_store_session(cipher->store,
             cipher->remote_address, record);
 
 complete:
-    AXOLOTL_UNREF(record);
+    SIGNAL_UNREF(record);
     if(result >= 0) {
         *plaintext = result_buf;
     }
     else {
-        axolotl_buffer_free(result_buf);
+        signal_buffer_free(result_buf);
     }
-    axolotl_unlock(cipher->global_context);
+    signal_unlock(cipher->global_context);
     return result;
 }
 
-static int session_cipher_decrypt_from_record_and_whisper_message(session_cipher *cipher,
-        session_record *record, whisper_message *ciphertext, axolotl_buffer **plaintext)
+static int session_cipher_decrypt_from_record_and_signal_message(session_cipher *cipher,
+        session_record *record, signal_message *ciphertext, signal_buffer **plaintext)
 {
     int result = 0;
-    axolotl_buffer *result_buf = 0;
+    signal_buffer *result_buf = 0;
     session_state *state = 0;
     session_state *state_copy = 0;
     session_record_state_node *previous_states_node = 0;
 
     assert(cipher);
-    axolotl_lock(cipher->global_context);
+    signal_lock(cipher->global_context);
 
     state = session_record_get_state(record);
     if(state) {
@@ -399,16 +400,16 @@ static int session_cipher_decrypt_from_record_and_whisper_message(session_cipher
 
         //TODO Collect and log invalid message errors if totally unsuccessful
 
-        result = session_cipher_decrypt_from_state_and_whisper_message(cipher, state_copy, ciphertext, &result_buf);
-        if(result < 0 && result != AX_ERR_INVALID_MESSAGE) {
+        result = session_cipher_decrypt_from_state_and_signal_message(cipher, state_copy, ciphertext, &result_buf);
+        if(result < 0 && result != SG_ERR_INVALID_MESSAGE) {
             goto complete;
         }
 
-        if(result >= AX_SUCCESS) {
+        if(result >= SG_SUCCESS) {
             session_record_set_state(record, state_copy);
             goto complete;
         }
-        AXOLOTL_UNREF(state_copy);
+        SIGNAL_UNREF(state_copy);
     }
 
     previous_states_node = session_record_get_previous_states_head(record);
@@ -420,41 +421,41 @@ static int session_cipher_decrypt_from_record_and_whisper_message(session_cipher
             goto complete;
         }
 
-        result = session_cipher_decrypt_from_state_and_whisper_message(cipher, state_copy, ciphertext, &result_buf);
-        if(result < 0 && result != AX_ERR_INVALID_MESSAGE) {
+        result = session_cipher_decrypt_from_state_and_signal_message(cipher, state_copy, ciphertext, &result_buf);
+        if(result < 0 && result != SG_ERR_INVALID_MESSAGE) {
             goto complete;
         }
 
-        if(result >= AX_SUCCESS) {
+        if(result >= SG_SUCCESS) {
             session_record_get_previous_states_remove(record, previous_states_node);
             result = session_record_promote_state(record, state_copy);
             goto complete;
         }
 
-        AXOLOTL_UNREF(state_copy);
+        SIGNAL_UNREF(state_copy);
         previous_states_node = session_record_get_previous_states_next(previous_states_node);
     }
 
-    axolotl_log(cipher->global_context, AX_LOG_WARNING, "No valid sessions");
-    result = AX_ERR_INVALID_MESSAGE;
+    signal_log(cipher->global_context, SG_LOG_WARNING, "No valid sessions");
+    result = SG_ERR_INVALID_MESSAGE;
 
 complete:
-    AXOLOTL_UNREF(state_copy);
+    SIGNAL_UNREF(state_copy);
     if(result >= 0) {
         *plaintext = result_buf;
     }
     else {
-        axolotl_buffer_free(result_buf);
+        signal_buffer_free(result_buf);
     }
-    axolotl_unlock(cipher->global_context);
+    signal_unlock(cipher->global_context);
     return result;
 }
 
-static int session_cipher_decrypt_from_state_and_whisper_message(session_cipher *cipher,
-        session_state *state, whisper_message *ciphertext, axolotl_buffer **plaintext)
+static int session_cipher_decrypt_from_state_and_signal_message(session_cipher *cipher,
+        session_state *state, signal_message *ciphertext, signal_buffer **plaintext)
 {
     int result = 0;
-    axolotl_buffer *result_buf = 0;
+    signal_buffer *result_buf = 0;
     ec_public_key *their_ephemeral = 0;
     uint32_t counter = 0;
     ratchet_chain_key *chain_key = 0;
@@ -463,30 +464,30 @@ static int session_cipher_decrypt_from_state_and_whisper_message(session_cipher
     uint32_t session_version = 0;
     ec_public_key *remote_identity_key = 0;
     ec_public_key *local_identity_key = 0;
-    axolotl_buffer *ciphertext_body = 0;
+    signal_buffer *ciphertext_body = 0;
 
     if(!session_state_has_sender_chain(state)) {
-        axolotl_log(cipher->global_context, AX_LOG_WARNING, "Uninitialized session!");
-        result = AX_ERR_INVALID_MESSAGE;
+        signal_log(cipher->global_context, SG_LOG_WARNING, "Uninitialized session!");
+        result = SG_ERR_INVALID_MESSAGE;
         goto complete;
     }
 
-    message_version = whisper_message_get_message_version(ciphertext);
+    message_version = signal_message_get_message_version(ciphertext);
     session_version = session_state_get_session_version(state);
 
     if(message_version != session_version) {
-        axolotl_log(cipher->global_context, AX_LOG_WARNING, "Message version %d, but session version %d", message_version, session_version);
-        result = AX_ERR_INVALID_MESSAGE;
+        signal_log(cipher->global_context, SG_LOG_WARNING, "Message version %d, but session version %d", message_version, session_version);
+        result = SG_ERR_INVALID_MESSAGE;
         goto complete;
     }
 
-    their_ephemeral = whisper_message_get_sender_ratchet_key(ciphertext);
+    their_ephemeral = signal_message_get_sender_ratchet_key(ciphertext);
     if(!their_ephemeral) {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
-    counter = whisper_message_get_counter(ciphertext);
+    counter = signal_message_get_counter(ciphertext);
 
     result = session_cipher_get_or_create_chain_key(cipher, &chain_key, state, their_ephemeral);
     if(result < 0) {
@@ -501,40 +502,40 @@ static int session_cipher_decrypt_from_state_and_whisper_message(session_cipher
 
     remote_identity_key = session_state_get_remote_identity_key(state);
     if(!remote_identity_key) {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
     local_identity_key = session_state_get_local_identity_key(state);
     if(!local_identity_key) {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
-    result = whisper_message_verify_mac(ciphertext, message_version,
+    result = signal_message_verify_mac(ciphertext, message_version,
             remote_identity_key, local_identity_key,
             message_keys.mac_key, sizeof(message_keys.mac_key),
             cipher->global_context);
     if(result != 1) {
         if(result == 0) {
-            axolotl_log(cipher->global_context, AX_LOG_WARNING, "Message mac not verified");
-            result = AX_ERR_INVALID_MESSAGE;
+            signal_log(cipher->global_context, SG_LOG_WARNING, "Message mac not verified");
+            result = SG_ERR_INVALID_MESSAGE;
         }
         else if(result < 0) {
-            axolotl_log(cipher->global_context, AX_LOG_WARNING, "Error attempting to verify message mac");
+            signal_log(cipher->global_context, SG_LOG_WARNING, "Error attempting to verify message mac");
         }
         goto complete;
     }
 
-    ciphertext_body = whisper_message_get_body(ciphertext);
+    ciphertext_body = signal_message_get_body(ciphertext);
     if(!ciphertext_body) {
-        axolotl_log(cipher->global_context, AX_LOG_WARNING, "Message body does not exist");
-        result = AX_ERR_INVALID_MESSAGE;
+        signal_log(cipher->global_context, SG_LOG_WARNING, "Message body does not exist");
+        result = SG_ERR_INVALID_MESSAGE;
         goto complete;
     }
 
     result = session_cipher_get_plaintext(cipher, &result_buf, message_version, &message_keys,
-            axolotl_buffer_data(ciphertext_body), axolotl_buffer_len(ciphertext_body));
+            signal_buffer_data(ciphertext_body), signal_buffer_len(ciphertext_body));
     if(result < 0) {
         goto complete;
     }
@@ -542,14 +543,14 @@ static int session_cipher_decrypt_from_state_and_whisper_message(session_cipher
     session_state_clear_unacknowledged_pre_key_message(state);
 
 complete:
-    AXOLOTL_UNREF(chain_key);
+    SIGNAL_UNREF(chain_key);
     if(result >= 0) {
         *plaintext = result_buf;
     }
     else {
-        axolotl_buffer_free(result_buf);
+        signal_buffer_free(result_buf);
     }
-    axolotl_explicit_bzero(&message_keys, sizeof(ratchet_message_keys));
+    signal_explicit_bzero(&message_keys, sizeof(ratchet_message_keys));
     return result;
 }
 
@@ -571,19 +572,19 @@ static int session_cipher_get_or_create_chain_key(session_cipher *cipher,
 
     result_key = session_state_get_receiver_chain_key(state, their_ephemeral);
     if(result_key) {
-        AXOLOTL_REF(result_key);
+        SIGNAL_REF(result_key);
         goto complete;
     }
 
     root_key = session_state_get_root_key(state);
     if(!root_key) {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
     our_ephemeral = session_state_get_sender_ratchet_key_pair(state);
     if(!our_ephemeral) {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
@@ -615,7 +616,7 @@ static int session_cipher_get_or_create_chain_key(session_cipher *cipher,
 
     previous_sender_chain_key = session_state_get_sender_chain_key(state);
     if(!previous_sender_chain_key) {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
@@ -626,26 +627,26 @@ static int session_cipher_get_or_create_chain_key(session_cipher *cipher,
     session_state_set_sender_chain(state, our_new_ephemeral, sender_chain_key);
 
     result_key = receiver_chain_key;
-    AXOLOTL_REF(result_key);
+    SIGNAL_REF(result_key);
 
 complete:
-    AXOLOTL_UNREF(receiver_root_key);
-    AXOLOTL_UNREF(receiver_chain_key);
-    AXOLOTL_UNREF(sender_root_key);
-    AXOLOTL_UNREF(sender_chain_key);
-    AXOLOTL_UNREF(our_new_ephemeral);
+    SIGNAL_UNREF(receiver_root_key);
+    SIGNAL_UNREF(receiver_chain_key);
+    SIGNAL_UNREF(sender_root_key);
+    SIGNAL_UNREF(sender_chain_key);
+    SIGNAL_UNREF(our_new_ephemeral);
     if(result >= 0) {
         *chain_key = result_key;
     }
     else {
-        AXOLOTL_UNREF(result_key);
+        SIGNAL_UNREF(result_key);
     }
     return result;
 }
 
 static int session_cipher_get_or_create_message_keys(ratchet_message_keys *message_keys,
         session_state *state, ec_public_key *their_ephemeral,
-        ratchet_chain_key *chain_key, uint32_t counter, axolotl_context *global_context)
+        ratchet_chain_key *chain_key, uint32_t counter, signal_context *global_context)
 {
     int result = 0;
     ratchet_chain_key *cur_chain_key = 0;
@@ -659,20 +660,20 @@ static int session_cipher_get_or_create_message_keys(ratchet_message_keys *messa
             goto complete;
         }
 
-        axolotl_log(global_context, AX_LOG_WARNING, "Received message with old counter: %d, %d",
+        signal_log(global_context, SG_LOG_WARNING, "Received message with old counter: %d, %d",
                 ratchet_chain_key_get_index(chain_key), counter);
-        result = AX_ERR_DUPLICATE_MESSAGE;
+        result = SG_ERR_DUPLICATE_MESSAGE;
         goto complete;
     }
 
     if(counter - ratchet_chain_key_get_index(chain_key) > 2000) {
-        axolotl_log(global_context, AX_LOG_WARNING, "Over 2000 messages into the future!");
-        result = AX_ERR_INVALID_MESSAGE;
+        signal_log(global_context, SG_LOG_WARNING, "Over 2000 messages into the future!");
+        result = SG_ERR_INVALID_MESSAGE;
         goto complete;
     }
 
     cur_chain_key = chain_key;
-    AXOLOTL_REF(cur_chain_key);
+    SIGNAL_REF(cur_chain_key);
 
     while(ratchet_chain_key_get_index(cur_chain_key) < counter) {
         result = ratchet_chain_key_get_message_keys(cur_chain_key, &message_keys_result);
@@ -689,7 +690,7 @@ static int session_cipher_get_or_create_message_keys(ratchet_message_keys *messa
         if(result < 0) {
             goto complete;
         }
-        AXOLOTL_UNREF(cur_chain_key);
+        SIGNAL_UNREF(cur_chain_key);
         cur_chain_key = next_chain_key;
         next_chain_key = 0;
     }
@@ -713,9 +714,9 @@ complete:
     if(result >= 0) {
         memcpy(message_keys, &message_keys_result, sizeof(ratchet_message_keys));
     }
-    AXOLOTL_UNREF(cur_chain_key);
-    AXOLOTL_UNREF(next_chain_key);
-    axolotl_explicit_bzero(&message_keys_result, sizeof(ratchet_message_keys));
+    SIGNAL_UNREF(cur_chain_key);
+    SIGNAL_UNREF(next_chain_key);
+    signal_explicit_bzero(&message_keys_result, sizeof(ratchet_message_keys));
     return result;
 }
 
@@ -727,16 +728,16 @@ int session_cipher_get_remote_registration_id(session_cipher *cipher, uint32_t *
     session_state *state = 0;
 
     assert(cipher);
-    axolotl_lock(cipher->global_context);
+    signal_lock(cipher->global_context);
 
-    result = axolotl_session_load_session(cipher->store, &record, cipher->remote_address);
+    result = signal_protocol_session_load_session(cipher->store, &record, cipher->remote_address);
     if(result < 0) {
         goto complete;
     }
 
     state = session_record_get_state(record);
     if(!state) {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
@@ -746,7 +747,7 @@ complete:
     if(result >= 0) {
         *remote_id = id_result;
     }
-    axolotl_unlock(cipher->global_context);
+    signal_unlock(cipher->global_context);
     return result;
 }
 
@@ -758,25 +759,25 @@ int session_cipher_get_session_version(session_cipher *cipher, uint32_t *version
     session_state *state = 0;
 
     assert(cipher);
-    axolotl_lock(cipher->global_context);
+    signal_lock(cipher->global_context);
 
-    result = axolotl_session_contains_session(cipher->store, cipher->remote_address);
+    result = signal_protocol_session_contains_session(cipher->store, cipher->remote_address);
     if(result != 1) {
         if(result == 0) {
-            axolotl_log(cipher->global_context, AX_LOG_WARNING, "No session for: %s:%d", cipher->remote_address->name, cipher->remote_address->device_id);
-            result = AX_ERR_NO_SESSION;
+            signal_log(cipher->global_context, SG_LOG_WARNING, "No session for: %s:%d", cipher->remote_address->name, cipher->remote_address->device_id);
+            result = SG_ERR_NO_SESSION;
         }
         goto complete;
     }
 
-    result = axolotl_session_load_session(cipher->store, &record, cipher->remote_address);
+    result = signal_protocol_session_load_session(cipher->store, &record, cipher->remote_address);
     if(result < 0) {
         goto complete;
     }
 
     state = session_record_get_state(record);
     if(!state) {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
@@ -786,21 +787,21 @@ complete:
     if(result >= 0) {
         *version = version_result;
     }
-    axolotl_unlock(cipher->global_context);
+    signal_unlock(cipher->global_context);
     return result;
 }
 
 static int session_cipher_get_ciphertext(session_cipher *cipher,
-        axolotl_buffer **ciphertext,
+        signal_buffer **ciphertext,
         uint32_t version, ratchet_message_keys *message_keys,
         const uint8_t *plaintext, size_t plaintext_len)
 {
     int result = 0;
-    axolotl_buffer *output = 0;
+    signal_buffer *output = 0;
 
     if(version >= 3) {
-        result = axolotl_encrypt(cipher->global_context,
-                &output, AX_CIPHER_AES_CBC_PKCS5,
+        result = signal_encrypt(cipher->global_context,
+                &output, SG_CIPHER_AES_CBC_PKCS5,
                 message_keys->cipher_key, sizeof(message_keys->cipher_key),
                 message_keys->iv, sizeof(message_keys->iv),
                 plaintext, plaintext_len);
@@ -813,8 +814,8 @@ static int session_cipher_get_ciphertext(session_cipher *cipher,
         iv[1] = (uint8_t)(message_keys->counter >> 16);
         iv[0] = (uint8_t)(message_keys->counter >> 24);
 
-        result = axolotl_encrypt(cipher->global_context,
-                &output, AX_CIPHER_AES_CTR_NOPADDING,
+        result = signal_encrypt(cipher->global_context,
+                &output, SG_CIPHER_AES_CTR_NOPADDING,
                 message_keys->cipher_key, sizeof(message_keys->cipher_key),
                 iv, sizeof(iv),
                 plaintext, plaintext_len);
@@ -828,16 +829,16 @@ static int session_cipher_get_ciphertext(session_cipher *cipher,
 }
 
 static int session_cipher_get_plaintext(session_cipher *cipher,
-        axolotl_buffer **plaintext,
+        signal_buffer **plaintext,
         uint32_t version, ratchet_message_keys *message_keys,
         const uint8_t *ciphertext, size_t ciphertext_len)
 {
     int result = 0;
-    axolotl_buffer *output = 0;
+    signal_buffer *output = 0;
 
     if(version >= 3) {
-        result = axolotl_decrypt(cipher->global_context,
-                &output, AX_CIPHER_AES_CBC_PKCS5,
+        result = signal_decrypt(cipher->global_context,
+                &output, SG_CIPHER_AES_CBC_PKCS5,
                 message_keys->cipher_key, sizeof(message_keys->cipher_key),
                 message_keys->iv, sizeof(message_keys->iv),
                 ciphertext, ciphertext_len);
@@ -850,8 +851,8 @@ static int session_cipher_get_plaintext(session_cipher *cipher,
         iv[1] = (uint8_t)(message_keys->counter >> 16);
         iv[0] = (uint8_t)(message_keys->counter >> 24);
 
-        result = axolotl_decrypt(cipher->global_context,
-                &output, AX_CIPHER_AES_CTR_NOPADDING,
+        result = signal_decrypt(cipher->global_context,
+                &output, SG_CIPHER_AES_CTR_NOPADDING,
                 message_keys->cipher_key, sizeof(message_keys->cipher_key),
                 iv, sizeof(iv),
                 ciphertext, ciphertext_len);
@@ -864,7 +865,7 @@ static int session_cipher_get_plaintext(session_cipher *cipher,
     return result;
 }
 
-static int session_cipher_decrypt_callback(session_cipher *cipher, axolotl_buffer *plaintext, void *decrypt_context)
+static int session_cipher_decrypt_callback(session_cipher *cipher, signal_buffer *plaintext, void *decrypt_context)
 {
     int result = 0;
     if(cipher->decrypt_callback) {
diff --git a/libs/libaxolotl/src/session_cipher.h b/libs/libaxolotl/src/session_cipher.h
index 9e4e61b6cf..0c1cd47f89 100644
--- a/libs/libaxolotl/src/session_cipher.h
+++ b/libs/libaxolotl/src/session_cipher.h
@@ -3,14 +3,14 @@
 
 #include <stdint.h>
 #include <stddef.h>
-#include "axolotl_types.h"
+#include "signal_protocol_types.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 /**
- * The main entry point for Axolotl encrypt/decrypt operations.
+ * The main entry point for Signal Protocol encrypt/decrypt operations.
  *
  * Once a session has been established with session_builder,
  * this class can be used for all encrypt/decrypt operations within
@@ -28,14 +28,14 @@ extern "C" {
  * When finished, free the returned instance by calling session_cipher_free().
  *
  * @param cipher set to a freshly allocated session cipher instance
- * @param store the axolotl_store_context to store all state information in
+ * @param store the signal_protocol_store_context to store all state information in
  * @param remote_address the remote address that messages will be encrypted to or decrypted from.
  * @param global_context the global library context
  * @return 0 on success, or negative on failure
  */
 int session_cipher_create(session_cipher **cipher,
-        axolotl_store_context *store, const axolotl_address *remote_address,
-        axolotl_context *global_context);
+        signal_protocol_store_context *store, const signal_protocol_address *remote_address,
+        signal_context *global_context);
 
 /**
  * Set the optional user data pointer for the session cipher.
@@ -57,8 +57,8 @@ void *session_cipher_get_user_data(session_cipher *cipher);
  * Set the callback function that is called during the decrypt process.
  *
  * The callback function is called from within
- * session_cipher_decrypt_pre_key_whisper_message() and
- * session_cipher_decrypt_whisper_message() after decryption is complete
+ * session_cipher_decrypt_pre_key_signal_message() and
+ * session_cipher_decrypt_signal_message() after decryption is complete
  * but before the updated session state has been committed to the session
  * store. If the callback function returns a negative value, then the
  * decrypt function will immediately fail with an error.
@@ -72,7 +72,7 @@ void *session_cipher_get_user_data(session_cipher *cipher);
  * @param user_data user data pointer provided to the callback
  */
 void session_cipher_set_decryption_callback(session_cipher *cipher,
-        int (*callback)(session_cipher *cipher, axolotl_buffer *plaintext, void *decrypt_context));
+        int (*callback)(session_cipher *cipher, signal_buffer *plaintext, void *decrypt_context));
 
 /**
  * Encrypt a message.
@@ -81,7 +81,7 @@ void session_cipher_set_decryption_callback(session_cipher *cipher,
  * @param padded_message_len The length of the data pointed to by padded_message
  * @param encrypted_message Set to a ciphertext message encrypted to the recipient+device tuple.
  *
- * @return AX_SUCCESS on success, negative on error
+ * @return SG_SUCCESS on success, negative on error
  */
 int session_cipher_encrypt(session_cipher *cipher,
         const uint8_t *padded_message, size_t padded_message_len,
@@ -90,50 +90,50 @@ int session_cipher_encrypt(session_cipher *cipher,
 /**
  * Decrypt a message.
  *
- * @param ciphertext The pre_key_whisper_message to decrypt.
+ * @param ciphertext The pre_key_signal_message to decrypt.
  * @param decrypt_context Optional context pointer associated with the
  *   ciphertext, which is passed to the decryption callback function
  * @param plaintext Set to a newly allocated buffer containing the plaintext.
  *
- * @retval AX_SUCCESS Success
- * @retval AX_ERR_INVALID_MESSAGE if the input is not valid ciphertext.
- * @retval AX_ERR_DUPLICATE_MESSAGE if the input is a message that has already been received.
- * @retval AX_ERR_LEGACY_MESSAGE if the input is a message formatted by a protocol version that
+ * @retval SG_SUCCESS Success
+ * @retval SG_ERR_INVALID_MESSAGE if the input is not valid ciphertext.
+ * @retval SG_ERR_DUPLICATE_MESSAGE if the input is a message that has already been received.
+ * @retval SG_ERR_LEGACY_MESSAGE if the input is a message formatted by a protocol version that
  *                               is no longer supported.
- * @retval AX_ERR_INVALID_KEY_ID when there is no local pre_key_record
+ * @retval SG_ERR_INVALID_KEY_ID when there is no local pre_key_record
  *                               that corresponds to the pre key ID in the message.
- * @retval AX_ERR_INVALID_KEY when the message is formatted incorrectly.
- * @retval AX_ERR_UNTRUSTED_IDENTITY when the identity key of the sender is untrusted.
+ * @retval SG_ERR_INVALID_KEY when the message is formatted incorrectly.
+ * @retval SG_ERR_UNTRUSTED_IDENTITY when the identity key of the sender is untrusted.
  */
-int session_cipher_decrypt_pre_key_whisper_message(session_cipher *cipher,
-        pre_key_whisper_message *ciphertext, void *decrypt_context,
-        axolotl_buffer **plaintext);
+int session_cipher_decrypt_pre_key_signal_message(session_cipher *cipher,
+        pre_key_signal_message *ciphertext, void *decrypt_context,
+        signal_buffer **plaintext);
 
 /**
  * Decrypt a message.
  *
- * @param ciphertext The whisper_message to decrypt.
+ * @param ciphertext The signal_message to decrypt.
  * @param decrypt_context Optional context pointer associated with the
  *   ciphertext, which is passed to the decryption callback function
  * @param plaintext Set to a newly allocated buffer containing the plaintext.
  *
- * @retval AX_SUCCESS Success
- * @retval AX_ERR_INVALID_MESSAGE if the input is not valid ciphertext.
- * @retval AX_ERR_DUPLICATE_MESSAGE if the input is a message that has already been received.
- * @retval AX_ERR_LEGACY_MESSAGE if the input is a message formatted by a protocol version that
+ * @retval SG_SUCCESS Success
+ * @retval SG_ERR_INVALID_MESSAGE if the input is not valid ciphertext.
+ * @retval SG_ERR_DUPLICATE_MESSAGE if the input is a message that has already been received.
+ * @retval SG_ERR_LEGACY_MESSAGE if the input is a message formatted by a protocol version that
  *                               is no longer supported.
- * @retval AX_ERR_NO_SESSION if there is no established session for this contact.
+ * @retval SG_ERR_NO_SESSION if there is no established session for this contact.
  */
-int session_cipher_decrypt_whisper_message(session_cipher *cipher,
-        whisper_message *ciphertext, void *decrypt_context,
-        axolotl_buffer **plaintext);
+int session_cipher_decrypt_signal_message(session_cipher *cipher,
+        signal_message *ciphertext, void *decrypt_context,
+        signal_buffer **plaintext);
 
 /**
  * Gets the remote registration ID for this session cipher.
  *
  * @param remote_id Set to the value of the remote registration ID
  *
- * @return AX_SUCCESS on success, negative on error
+ * @return SG_SUCCESS on success, negative on error
  */
 int session_cipher_get_remote_registration_id(session_cipher *cipher, uint32_t *remote_id);
 
@@ -142,8 +142,8 @@ int session_cipher_get_remote_registration_id(session_cipher *cipher, uint32_t *
  *
  * @param version Set to the value of the session version
  *
- * @retval AX_SUCCESS Success
- * @retval AX_ERR_NO_SESSION if no session could be found
+ * @retval SG_SUCCESS Success
+ * @retval SG_ERR_NO_SESSION if no session could be found
  */
 int session_cipher_get_session_version(session_cipher *cipher, uint32_t *version);
 
diff --git a/libs/libaxolotl/src/session_pre_key.c b/libs/libaxolotl/src/session_pre_key.c
index 333d2df6ce..416ed6a1f5 100644
--- a/libs/libaxolotl/src/session_pre_key.c
+++ b/libs/libaxolotl/src/session_pre_key.c
@@ -4,18 +4,18 @@
 #include <string.h>
 #include <assert.h>
 
-#include "axolotl_internal.h"
 #include "curve.h"
 #include "LocalStorageProtocol.pb-c.h"
+#include "signal_protocol_internal.h"
 
 struct session_pre_key {
-    axolotl_type_base base;
+    signal_type_base base;
     uint32_t id;
     ec_key_pair *key_pair;
 };
 
 struct session_signed_pre_key {
-    axolotl_type_base base;
+    signal_type_base base;
     uint32_t id;
     ec_key_pair *key_pair;
     uint64_t timestamp;
@@ -24,14 +24,14 @@ struct session_signed_pre_key {
 };
 
 struct session_pre_key_bundle {
-    axolotl_type_base base;
+    signal_type_base base;
     uint32_t registration_id;
     int device_id;
     uint32_t pre_key_id;
     ec_public_key *pre_key_public;
     uint32_t signed_pre_key_id;
     ec_public_key *signed_pre_key_public;
-    axolotl_buffer *signed_pre_key_signature;
+    signal_buffer *signed_pre_key_signature;
     ec_public_key *identity_key;
 };
 
@@ -45,33 +45,38 @@ int session_pre_key_create(session_pre_key **pre_key, uint32_t id, ec_key_pair *
 
     result = malloc(sizeof(session_pre_key));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
     memset(result, 0, sizeof(session_pre_key));
-    AXOLOTL_INIT(result, session_pre_key_destroy);
+    SIGNAL_INIT(result, session_pre_key_destroy);
 
     result->id = id;
 
-    AXOLOTL_REF(key_pair);
+    SIGNAL_REF(key_pair);
     result->key_pair = key_pair;
 
     *pre_key = result;
     return 0;
 }
 
-int session_pre_key_serialize(axolotl_buffer **buffer, const session_pre_key *pre_key)
+int session_pre_key_serialize(signal_buffer **buffer, const session_pre_key *pre_key)
 {
     int result = 0;
     size_t result_size = 0;
     Textsecure__PreKeyRecordStructure record = TEXTSECURE__PRE_KEY_RECORD_STRUCTURE__INIT;
-    axolotl_buffer *public_buf = 0;
-    axolotl_buffer *private_buf = 0;
-    axolotl_buffer *result_buf = 0;
+    signal_buffer *public_buf = 0;
+    signal_buffer *private_buf = 0;
+    signal_buffer *result_buf = 0;
     ec_public_key *public_key = 0;
     ec_private_key *private_key = 0;
     size_t len = 0;
     uint8_t *data = 0;
 
+    if(!pre_key) {
+        result = SG_ERR_INVAL;
+        goto complete;
+    }
+
     public_key = ec_key_pair_get_public(pre_key->key_pair);
     result = ec_public_key_serialize(&public_buf, public_key);
     if(result < 0) {
@@ -88,36 +93,36 @@ int session_pre_key_serialize(axolotl_buffer **buffer, const session_pre_key *pr
     record.id = pre_key->id;
 
     record.has_publickey = 1;
-    record.publickey.data = axolotl_buffer_data(public_buf);
-    record.publickey.len = axolotl_buffer_len(public_buf);
+    record.publickey.data = signal_buffer_data(public_buf);
+    record.publickey.len = signal_buffer_len(public_buf);
 
     record.has_privatekey = 1;
-    record.privatekey.data = axolotl_buffer_data(private_buf);
-    record.privatekey.len = axolotl_buffer_len(private_buf);
+    record.privatekey.data = signal_buffer_data(private_buf);
+    record.privatekey.len = signal_buffer_len(private_buf);
 
     len = textsecure__pre_key_record_structure__get_packed_size(&record);
 
-    result_buf = axolotl_buffer_alloc(len);
+    result_buf = signal_buffer_alloc(len);
     if(!result_buf) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    data = axolotl_buffer_data(result_buf);
+    data = signal_buffer_data(result_buf);
     result_size = textsecure__pre_key_record_structure__pack(&record, data);
     if(result_size != len) {
-        axolotl_buffer_free(result_buf);
-        result = AX_ERR_INVALID_PROTO_BUF;
+        signal_buffer_free(result_buf);
+        result = SG_ERR_INVALID_PROTO_BUF;
         result_buf = 0;
         goto complete;
     }
 
 complete:
     if(public_buf) {
-        axolotl_buffer_free(public_buf);
+        signal_buffer_free(public_buf);
     }
     if(private_buf) {
-        axolotl_buffer_free(private_buf);
+        signal_buffer_free(private_buf);
     }
     if(result >= 0) {
         *buffer = result_buf;
@@ -125,7 +130,7 @@ complete:
     return result;
 }
 
-int session_pre_key_deserialize(session_pre_key **pre_key, const uint8_t *data, size_t len, axolotl_context *global_context)
+int session_pre_key_deserialize(session_pre_key **pre_key, const uint8_t *data, size_t len, signal_context *global_context)
 {
     int result = 0;
     Textsecure__PreKeyRecordStructure *record = 0;
@@ -136,12 +141,12 @@ int session_pre_key_deserialize(session_pre_key **pre_key, const uint8_t *data,
 
     record = textsecure__pre_key_record_structure__unpack(0, len, data);
     if(!record) {
-        result = AX_ERR_INVALID_PROTO_BUF;
+        result = SG_ERR_INVALID_PROTO_BUF;
         goto complete;
     }
 
     if(!record->has_id || !record->has_publickey || !record->has_privatekey) {
-        result = AX_ERR_INVALID_KEY;
+        result = SG_ERR_INVALID_KEY;
         goto complete;
     }
 
@@ -170,13 +175,13 @@ complete:
         textsecure__pre_key_record_structure__free_unpacked(record, 0);
     }
     if(public_key) {
-        AXOLOTL_UNREF(public_key);
+        SIGNAL_UNREF(public_key);
     }
     if(private_key) {
-        AXOLOTL_UNREF(private_key);
+        SIGNAL_UNREF(private_key);
     }
     if(key_pair) {
-        AXOLOTL_UNREF(key_pair);
+        SIGNAL_UNREF(key_pair);
     }
     if(result >= 0) {
         *pre_key = result_pre_key;
@@ -194,12 +199,12 @@ ec_key_pair *session_pre_key_get_key_pair(const session_pre_key *pre_key)
     return pre_key->key_pair;
 }
 
-void session_pre_key_destroy(axolotl_type_base *type)
+void session_pre_key_destroy(signal_type_base *type)
 {
     session_pre_key *pre_key = (session_pre_key *)type;
 
     if(pre_key->key_pair) {
-        AXOLOTL_UNREF(pre_key->key_pair);
+        SIGNAL_UNREF(pre_key->key_pair);
     }
 
     free(pre_key);
@@ -218,20 +223,20 @@ int session_signed_pre_key_create(session_signed_pre_key **pre_key,
     assert(signature_len > 0);
 
     if(signature_len > (SIZE_MAX - sizeof(session_signed_pre_key)) / sizeof(uint8_t)) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
     result = malloc(sizeof(session_signed_pre_key) + (sizeof(uint8_t) * signature_len));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
     memset(result, 0, sizeof(session_signed_pre_key));
-    AXOLOTL_INIT(result, session_signed_pre_key_destroy);
+    SIGNAL_INIT(result, session_signed_pre_key_destroy);
 
     result->id = id;
     result->timestamp = timestamp;
 
-    AXOLOTL_REF(key_pair);
+    SIGNAL_REF(key_pair);
     result->key_pair = key_pair;
 
     result->signature_len = signature_len;
@@ -242,15 +247,15 @@ int session_signed_pre_key_create(session_signed_pre_key **pre_key,
     return 0;
 }
 
-int session_signed_pre_key_serialize(axolotl_buffer **buffer, const session_signed_pre_key *pre_key)
+int session_signed_pre_key_serialize(signal_buffer **buffer, const session_signed_pre_key *pre_key)
 {
     int result = 0;
     size_t result_size = 0;
     Textsecure__SignedPreKeyRecordStructure record = TEXTSECURE__SIGNED_PRE_KEY_RECORD_STRUCTURE__INIT;
-    axolotl_buffer *public_buf = 0;
-    axolotl_buffer *private_buf = 0;
-    axolotl_buffer *signature_buf = 0;
-    axolotl_buffer *result_buf = 0;
+    signal_buffer *public_buf = 0;
+    signal_buffer *private_buf = 0;
+    signal_buffer *signature_buf = 0;
+    signal_buffer *result_buf = 0;
     ec_public_key *public_key = 0;
     ec_private_key *private_key = 0;
     size_t len = 0;
@@ -268,9 +273,9 @@ int session_signed_pre_key_serialize(axolotl_buffer **buffer, const session_sign
         goto complete;
     }
 
-    signature_buf = axolotl_buffer_create(pre_key->signature, pre_key->signature_len);
+    signature_buf = signal_buffer_create(pre_key->signature, pre_key->signature_len);
     if(!signature_buf) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
@@ -281,43 +286,43 @@ int session_signed_pre_key_serialize(axolotl_buffer **buffer, const session_sign
     record.timestamp = pre_key->timestamp;
 
     record.has_publickey = 1;
-    record.publickey.data = axolotl_buffer_data(public_buf);
-    record.publickey.len = axolotl_buffer_len(public_buf);
+    record.publickey.data = signal_buffer_data(public_buf);
+    record.publickey.len = signal_buffer_len(public_buf);
 
     record.has_privatekey = 1;
-    record.privatekey.data = axolotl_buffer_data(private_buf);
-    record.privatekey.len = axolotl_buffer_len(private_buf);
+    record.privatekey.data = signal_buffer_data(private_buf);
+    record.privatekey.len = signal_buffer_len(private_buf);
 
     record.has_signature = 1;
-    record.signature.data = axolotl_buffer_data(signature_buf);
-    record.signature.len = axolotl_buffer_len(signature_buf);
+    record.signature.data = signal_buffer_data(signature_buf);
+    record.signature.len = signal_buffer_len(signature_buf);
 
     len = textsecure__signed_pre_key_record_structure__get_packed_size(&record);
 
-    result_buf = axolotl_buffer_alloc(len);
+    result_buf = signal_buffer_alloc(len);
     if(!result_buf) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    data = axolotl_buffer_data(result_buf);
+    data = signal_buffer_data(result_buf);
     result_size = textsecure__signed_pre_key_record_structure__pack(&record, data);
     if(result_size != len) {
-        axolotl_buffer_free(result_buf);
-        result = AX_ERR_INVALID_PROTO_BUF;
+        signal_buffer_free(result_buf);
+        result = SG_ERR_INVALID_PROTO_BUF;
         result_buf = 0;
         goto complete;
     }
 
 complete:
     if(public_buf) {
-        axolotl_buffer_free(public_buf);
+        signal_buffer_free(public_buf);
     }
     if(private_buf) {
-        axolotl_buffer_free(private_buf);
+        signal_buffer_free(private_buf);
     }
     if(signature_buf) {
-        axolotl_buffer_free(signature_buf);
+        signal_buffer_free(signature_buf);
     }
     if(result >= 0) {
         *buffer = result_buf;
@@ -325,7 +330,7 @@ complete:
     return result;
 }
 
-int session_signed_pre_key_deserialize(session_signed_pre_key **pre_key, const uint8_t *data, size_t len, axolotl_context *global_context)
+int session_signed_pre_key_deserialize(session_signed_pre_key **pre_key, const uint8_t *data, size_t len, signal_context *global_context)
 {
     int result = 0;
     Textsecure__SignedPreKeyRecordStructure *record = 0;
@@ -336,14 +341,14 @@ int session_signed_pre_key_deserialize(session_signed_pre_key **pre_key, const u
 
     record = textsecure__signed_pre_key_record_structure__unpack(0, len, data);
     if(!record) {
-        result = AX_ERR_INVALID_PROTO_BUF;
+        result = SG_ERR_INVALID_PROTO_BUF;
         goto complete;
     }
 
     if(!record->has_id || !record->has_timestamp
             || !record->has_publickey || !record->has_privatekey
             || !record->has_signature) {
-        result = AX_ERR_INVALID_KEY;
+        result = SG_ERR_INVALID_KEY;
         goto complete;
     }
 
@@ -374,13 +379,13 @@ complete:
         textsecure__signed_pre_key_record_structure__free_unpacked(record, 0);
     }
     if(public_key) {
-        AXOLOTL_UNREF(public_key);
+        SIGNAL_UNREF(public_key);
     }
     if(private_key) {
-        AXOLOTL_UNREF(private_key);
+        SIGNAL_UNREF(private_key);
     }
     if(key_pair) {
-        AXOLOTL_UNREF(key_pair);
+        SIGNAL_UNREF(key_pair);
     }
     if(result >= 0) {
         *pre_key = result_pre_key;
@@ -413,12 +418,12 @@ size_t session_signed_pre_key_get_signature_len(const session_signed_pre_key *pr
     return pre_key->signature_len;
 }
 
-void session_signed_pre_key_destroy(axolotl_type_base *type)
+void session_signed_pre_key_destroy(signal_type_base *type)
 {
     session_signed_pre_key *pre_key = (session_signed_pre_key *)type;
 
     if(pre_key->key_pair) {
-        AXOLOTL_UNREF(pre_key->key_pair);
+        SIGNAL_UNREF(pre_key->key_pair);
     }
 
     free(pre_key);
@@ -438,36 +443,36 @@ int session_pre_key_bundle_create(session_pre_key_bundle **bundle,
 
     result_bundle = malloc(sizeof(session_pre_key_bundle));
     if(!result_bundle) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
     memset(result_bundle, 0, sizeof(session_pre_key_bundle));
-    AXOLOTL_INIT(result_bundle, session_pre_key_bundle_destroy);
+    SIGNAL_INIT(result_bundle, session_pre_key_bundle_destroy);
 
     result_bundle->registration_id = registration_id;
     result_bundle->device_id = device_id;
     result_bundle->pre_key_id = pre_key_id;
 
     if(pre_key_public) {
-        AXOLOTL_REF(pre_key_public);
+        SIGNAL_REF(pre_key_public);
         result_bundle->pre_key_public = pre_key_public;
     }
 
     result_bundle->signed_pre_key_id = signed_pre_key_id;
 
     if(signed_pre_key_public) {
-        AXOLOTL_REF(signed_pre_key_public);
+        SIGNAL_REF(signed_pre_key_public);
         result_bundle->signed_pre_key_public = signed_pre_key_public;
     }
 
     if(signed_pre_key_signature_data && signed_pre_key_signature_len > 0) {
-        result_bundle->signed_pre_key_signature = axolotl_buffer_create(
+        result_bundle->signed_pre_key_signature = signal_buffer_create(
                 signed_pre_key_signature_data, signed_pre_key_signature_len);
     }
 
     if(identity_key) {
-        AXOLOTL_REF(identity_key);
+        SIGNAL_REF(identity_key);
         result_bundle->identity_key = identity_key;
     }
 
@@ -477,7 +482,7 @@ complete:
     }
     else {
         if(result_bundle) {
-            AXOLOTL_UNREF(result_bundle);
+            SIGNAL_UNREF(result_bundle);
         }
     }
     return result;
@@ -519,7 +524,7 @@ ec_public_key *session_pre_key_bundle_get_signed_pre_key(const session_pre_key_b
     return bundle->signed_pre_key_public;
 }
 
-axolotl_buffer *session_pre_key_bundle_get_signed_pre_key_signature(const session_pre_key_bundle *bundle)
+signal_buffer *session_pre_key_bundle_get_signed_pre_key_signature(const session_pre_key_bundle *bundle)
 {
     assert(bundle);
     return bundle->signed_pre_key_signature;
@@ -531,21 +536,21 @@ ec_public_key *session_pre_key_bundle_get_identity_key(const session_pre_key_bun
     return bundle->identity_key;
 }
 
-void session_pre_key_bundle_destroy(axolotl_type_base *type)
+void session_pre_key_bundle_destroy(signal_type_base *type)
 {
     session_pre_key_bundle *bundle = (session_pre_key_bundle *)type;
 
     if(bundle->pre_key_public) {
-        AXOLOTL_UNREF(bundle->pre_key_public);
+        SIGNAL_UNREF(bundle->pre_key_public);
     }
     if(bundle->signed_pre_key_public) {
-        AXOLOTL_UNREF(bundle->signed_pre_key_public);
+        SIGNAL_UNREF(bundle->signed_pre_key_public);
     }
     if(bundle->signed_pre_key_signature) {
-        axolotl_buffer_free(bundle->signed_pre_key_signature);
+        signal_buffer_free(bundle->signed_pre_key_signature);
     }
     if(bundle->identity_key) {
-        AXOLOTL_UNREF(bundle->identity_key);
+        SIGNAL_UNREF(bundle->identity_key);
     }
 
     free(bundle);
diff --git a/libs/libaxolotl/src/session_pre_key.h b/libs/libaxolotl/src/session_pre_key.h
index 4b5f1b179a..ff8a9a8de2 100644
--- a/libs/libaxolotl/src/session_pre_key.h
+++ b/libs/libaxolotl/src/session_pre_key.h
@@ -3,7 +3,7 @@
 
 #include <stdint.h>
 #include <stddef.h>
-#include "axolotl_types.h"
+#include "signal_protocol_types.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -14,21 +14,21 @@ extern "C" {
 /*------------------------------------------------------------------------*/
 
 int session_pre_key_create(session_pre_key **pre_key, uint32_t id, ec_key_pair *key_pair);
-int session_pre_key_serialize(axolotl_buffer **buffer, const session_pre_key *pre_key);
-int session_pre_key_deserialize(session_pre_key **pre_key, const uint8_t *data, size_t len, axolotl_context *global_context);
+int session_pre_key_serialize(signal_buffer **buffer, const session_pre_key *pre_key);
+int session_pre_key_deserialize(session_pre_key **pre_key, const uint8_t *data, size_t len, signal_context *global_context);
 
 uint32_t session_pre_key_get_id(const session_pre_key *pre_key);
 ec_key_pair *session_pre_key_get_key_pair(const session_pre_key *pre_key);
 
-void session_pre_key_destroy(axolotl_type_base *type);
+void session_pre_key_destroy(signal_type_base *type);
 
 /*------------------------------------------------------------------------*/
 
 int session_signed_pre_key_create(session_signed_pre_key **pre_key,
         uint32_t id, uint64_t timestamp, ec_key_pair *key_pair,
         const uint8_t *signature, size_t signature_len);
-int session_signed_pre_key_serialize(axolotl_buffer **buffer, const session_signed_pre_key *pre_key);
-int session_signed_pre_key_deserialize(session_signed_pre_key **pre_key, const uint8_t *data, size_t len, axolotl_context *global_context);
+int session_signed_pre_key_serialize(signal_buffer **buffer, const session_signed_pre_key *pre_key);
+int session_signed_pre_key_deserialize(session_signed_pre_key **pre_key, const uint8_t *data, size_t len, signal_context *global_context);
 
 uint32_t session_signed_pre_key_get_id(const session_signed_pre_key *pre_key);
 uint64_t session_signed_pre_key_get_timestamp(const session_signed_pre_key *pre_key);
@@ -36,7 +36,7 @@ ec_key_pair *session_signed_pre_key_get_key_pair(const session_signed_pre_key *p
 const uint8_t *session_signed_pre_key_get_signature(const session_signed_pre_key *pre_key);
 size_t session_signed_pre_key_get_signature_len(const session_signed_pre_key *pre_key);
 
-void session_signed_pre_key_destroy(axolotl_type_base *type);
+void session_signed_pre_key_destroy(signal_type_base *type);
 
 /*------------------------------------------------------------------------*/
 
@@ -53,10 +53,10 @@ uint32_t session_pre_key_bundle_get_pre_key_id(const session_pre_key_bundle *bun
 ec_public_key *session_pre_key_bundle_get_pre_key(const session_pre_key_bundle *bundle);
 uint32_t session_pre_key_bundle_get_signed_pre_key_id(const session_pre_key_bundle *bundle);
 ec_public_key *session_pre_key_bundle_get_signed_pre_key(const session_pre_key_bundle *bundle);
-axolotl_buffer *session_pre_key_bundle_get_signed_pre_key_signature(const session_pre_key_bundle *bundle);
+signal_buffer *session_pre_key_bundle_get_signed_pre_key_signature(const session_pre_key_bundle *bundle);
 ec_public_key *session_pre_key_bundle_get_identity_key(const session_pre_key_bundle *bundle);
 
-void session_pre_key_bundle_destroy(axolotl_type_base *type);
+void session_pre_key_bundle_destroy(signal_type_base *type);
 
 #ifdef __cplusplus
 }
diff --git a/libs/libaxolotl/src/session_record.c b/libs/libaxolotl/src/session_record.c
index c6b5cba5a4..0f72e90f83 100644
--- a/libs/libaxolotl/src/session_record.c
+++ b/libs/libaxolotl/src/session_record.c
@@ -4,10 +4,10 @@
 #include <string.h>
 #include <assert.h>
 
-#include "axolotl_internal.h"
 #include "session_state.h"
 #include "utlist.h"
 #include "LocalStorageProtocol.pb-c.h"
+#include "signal_protocol_internal.h"
 
 #define ARCHIVED_STATES_MAX_LENGTH 40
 
@@ -19,34 +19,34 @@ struct session_record_state_node
 
 struct session_record
 {
-    axolotl_type_base base;
+    signal_type_base base;
     session_state *state;
     session_record_state_node *previous_states_head;
     int is_fresh;
-    axolotl_context *global_context;
+    signal_context *global_context;
 };
 
 static void session_record_free_previous_states(session_record *record);
 
-int session_record_create(session_record **record, session_state *state, axolotl_context *global_context)
+int session_record_create(session_record **record, session_state *state, signal_context *global_context)
 {
     session_record *result = malloc(sizeof(session_record));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
     memset(result, 0, sizeof(session_record));
-    AXOLOTL_INIT(result, session_record_destroy);
+    SIGNAL_INIT(result, session_record_destroy);
 
     if(!state) {
         int ret = session_state_create(&result->state, global_context);
         if(ret < 0) {
-            AXOLOTL_UNREF(result);
+            SIGNAL_UNREF(result);
             return ret;
         }
         result->is_fresh = 1;
     }
     else {
-        AXOLOTL_REF(state);
+        SIGNAL_REF(state);
         result->state = state;
         result->is_fresh = 0;
     }
@@ -56,21 +56,26 @@ int session_record_create(session_record **record, session_state *state, axolotl
     return 0;
 }
 
-int session_record_serialize(axolotl_buffer **buffer, const session_record *record)
+int session_record_serialize(signal_buffer **buffer, const session_record *record)
 {
     int result = 0;
     size_t result_size = 0;
     unsigned int i = 0;
     Textsecure__RecordStructure record_structure = TEXTSECURE__RECORD_STRUCTURE__INIT;
     session_record_state_node *cur_node = 0;
-    axolotl_buffer *result_buf = 0;
+    signal_buffer *result_buf = 0;
     size_t len = 0;
     uint8_t *data = 0;
 
+    if(!record) {
+        result = SG_ERR_INVAL;
+        goto complete;
+    }
+
     if(record->state) {
         record_structure.currentsession = malloc(sizeof(Textsecure__SessionStructure));
         if(!record_structure.currentsession) {
-            result = AX_ERR_NOMEM;
+            result = SG_ERR_NOMEM;
             goto complete;
         }
         textsecure__session_structure__init(record_structure.currentsession);
@@ -81,17 +86,17 @@ int session_record_serialize(axolotl_buffer **buffer, const session_record *reco
     }
 
     if(record->previous_states_head) {
-        unsigned int count;
+        size_t count;
         DL_COUNT(record->previous_states_head, cur_node, count);
 
         if(count > SIZE_MAX / sizeof(Textsecure__SessionStructure *)) {
-            result = AX_ERR_NOMEM;
+            result = SG_ERR_NOMEM;
             goto complete;
         }
 
         record_structure.previoussessions = malloc(sizeof(Textsecure__SessionStructure *) * count);
         if(!record_structure.previoussessions) {
-            result = AX_ERR_NOMEM;
+            result = SG_ERR_NOMEM;
             goto complete;
         }
 
@@ -99,7 +104,7 @@ int session_record_serialize(axolotl_buffer **buffer, const session_record *reco
         DL_FOREACH(record->previous_states_head, cur_node) {
             record_structure.previoussessions[i] = malloc(sizeof(Textsecure__SessionStructure));
             if(!record_structure.previoussessions[i]) {
-                result = AX_ERR_NOMEM;
+                result = SG_ERR_NOMEM;
                 break;
             }
             textsecure__session_structure__init(record_structure.previoussessions[i]);
@@ -117,17 +122,17 @@ int session_record_serialize(axolotl_buffer **buffer, const session_record *reco
 
     len = textsecure__record_structure__get_packed_size(&record_structure);
 
-    result_buf = axolotl_buffer_alloc(len);
+    result_buf = signal_buffer_alloc(len);
     if(!result_buf) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    data = axolotl_buffer_data(result_buf);
+    data = signal_buffer_data(result_buf);
     result_size = textsecure__record_structure__pack(&record_structure, data);
     if(result_size != len) {
-        axolotl_buffer_free(result_buf);
-        result = AX_ERR_INVALID_PROTO_BUF;
+        signal_buffer_free(result_buf);
+        result = SG_ERR_INVALID_PROTO_BUF;
         result_buf = 0;
         goto complete;
     }
@@ -151,7 +156,7 @@ complete:
     return result;
 }
 
-int session_record_deserialize(session_record **record, const uint8_t *data, size_t len, axolotl_context *global_context)
+int session_record_deserialize(session_record **record, const uint8_t *data, size_t len, signal_context *global_context)
 {
     int result = 0;
     session_record *result_record = 0;
@@ -161,7 +166,7 @@ int session_record_deserialize(session_record **record, const uint8_t *data, siz
 
     record_structure = textsecure__record_structure__unpack(0, len, data);
     if(!record_structure) {
-        result = AX_ERR_INVALID_PROTO_BUF;
+        result = SG_ERR_INVALID_PROTO_BUF;
         goto complete;
     }
 
@@ -176,7 +181,7 @@ int session_record_deserialize(session_record **record, const uint8_t *data, siz
     if(result < 0) {
         goto complete;
     }
-    AXOLOTL_UNREF(current_state);
+    SIGNAL_UNREF(current_state);
     current_state = 0;
     result_record->is_fresh = 0;
 
@@ -188,7 +193,7 @@ int session_record_deserialize(session_record **record, const uint8_t *data, siz
 
             session_record_state_node *node = malloc(sizeof(session_record_state_node));
             if(!node) {
-                result = AX_ERR_NOMEM;
+                result = SG_ERR_NOMEM;
                 goto complete;
             }
 
@@ -209,7 +214,7 @@ complete:
         textsecure__record_structure__free_unpacked(record_structure, 0);
     }
     if(current_state) {
-        AXOLOTL_UNREF(current_state);
+        SIGNAL_UNREF(current_state);
     }
     if(previous_states_head) {
         session_record_state_node *cur_node;
@@ -221,7 +226,7 @@ complete:
     }
     if(result_record) {
         if(result < 0) {
-            AXOLOTL_UNREF(result_record);
+            SIGNAL_UNREF(result_record);
         }
         else {
             *record = result_record;
@@ -231,10 +236,10 @@ complete:
     return result;
 }
 
-int session_record_copy(session_record **record, session_record *other_record, axolotl_context *global_context)
+int session_record_copy(session_record **record, session_record *other_record, signal_context *global_context)
 {
     int result = 0;
-    axolotl_buffer *buffer = 0;
+    signal_buffer *buffer = 0;
     size_t len = 0;
     uint8_t *data = 0;
 
@@ -246,8 +251,8 @@ int session_record_copy(session_record **record, session_record *other_record, a
         goto complete;
     }
 
-    data = axolotl_buffer_data(buffer);
-    len = axolotl_buffer_len(buffer);
+    data = signal_buffer_data(buffer);
+    len = signal_buffer_len(buffer);
 
     result = session_record_deserialize(record, data, len, global_context);
     if(result < 0) {
@@ -256,7 +261,7 @@ int session_record_copy(session_record **record, session_record *other_record, a
 
 complete:
     if(buffer) {
-        axolotl_buffer_free(buffer);
+        signal_buffer_free(buffer);
     }
     return result;
 }
@@ -297,9 +302,9 @@ void session_record_set_state(session_record *record, session_state *state)
     assert(record);
     assert(state);
     if(record->state) {
-        AXOLOTL_UNREF(record->state);
+        SIGNAL_UNREF(record->state);
     }
-    AXOLOTL_REF(state);
+    SIGNAL_REF(state);
     record->state = state;
 }
 
@@ -330,7 +335,7 @@ session_record_state_node *session_record_get_previous_states_remove(session_rec
 
     next_node = node->next;
     DL_DELETE(record->previous_states_head, node);
-    AXOLOTL_UNREF(node->state);
+    SIGNAL_UNREF(node->state);
     free(node);
     return next_node;
 }
@@ -356,7 +361,7 @@ int session_record_archive_current_state(session_record *record)
     result = session_record_promote_state(record, new_state);
 
 complete:
-    AXOLOTL_UNREF(new_state);
+    SIGNAL_UNREF(new_state);
     return result;
 }
 
@@ -373,7 +378,7 @@ int session_record_promote_state(session_record *record, session_state *promoted
     if(record->state) {
         session_record_state_node *node = malloc(sizeof(session_record_state_node));
         if(!node) {
-            return AX_ERR_NOMEM;
+            return SG_ERR_NOMEM;
         }
 
         node->state = record->state;
@@ -382,7 +387,7 @@ int session_record_promote_state(session_record *record, session_state *promoted
     }
 
     // Make the promoted state the current state
-    AXOLOTL_REF(promoted_state);
+    SIGNAL_REF(promoted_state);
     record->state = promoted_state;
 
     // Remove any previous nodes beyond the maximum length
@@ -391,7 +396,7 @@ int session_record_promote_state(session_record *record, session_state *promoted
         if(count > ARCHIVED_STATES_MAX_LENGTH) {
             DL_DELETE(record->previous_states_head, cur_node);
             if(cur_node->state) {
-                AXOLOTL_UNREF(cur_node->state);
+                SIGNAL_UNREF(cur_node->state);
             }
             free(cur_node);
         }
@@ -407,19 +412,19 @@ static void session_record_free_previous_states(session_record *record)
     DL_FOREACH_SAFE(record->previous_states_head, cur_node, tmp_node) {
         DL_DELETE(record->previous_states_head, cur_node);
         if(cur_node->state) {
-            AXOLOTL_UNREF(cur_node->state);
+            SIGNAL_UNREF(cur_node->state);
         }
         free(cur_node);
     }
     record->previous_states_head = 0;
 }
 
-void session_record_destroy(axolotl_type_base *type)
+void session_record_destroy(signal_type_base *type)
 {
     session_record *record = (session_record *)type;
 
     if(record->state) {
-        AXOLOTL_UNREF(record->state);
+        SIGNAL_UNREF(record->state);
     }
     session_record_free_previous_states(record);
 
diff --git a/libs/libaxolotl/src/session_record.h b/libs/libaxolotl/src/session_record.h
index 99f113d2eb..581e232640 100644
--- a/libs/libaxolotl/src/session_record.h
+++ b/libs/libaxolotl/src/session_record.h
@@ -3,16 +3,16 @@
 
 #include <stdint.h>
 #include <stddef.h>
-#include "axolotl_types.h"
+#include "signal_protocol_types.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-int session_record_create(session_record **record, session_state *state, axolotl_context *global_context);
-int session_record_serialize(axolotl_buffer **buffer, const session_record *record);
-int session_record_deserialize(session_record **record, const uint8_t *data, size_t len, axolotl_context *global_context);
-int session_record_copy(session_record **record, session_record *other_record, axolotl_context *global_context);
+int session_record_create(session_record **record, session_state *state, signal_context *global_context);
+int session_record_serialize(signal_buffer **buffer, const session_record *record);
+int session_record_deserialize(session_record **record, const uint8_t *data, size_t len, signal_context *global_context);
+int session_record_copy(session_record **record, session_record *other_record, signal_context *global_context);
 
 int session_record_has_session_state(session_record *record, uint32_t version, const ec_public_key *alice_base_key);
 session_state *session_record_get_state(session_record *record);
@@ -41,7 +41,7 @@ int session_record_archive_current_state(session_record *record);
 
 int session_record_promote_state(session_record *record, session_state *promoted_state);
 
-void session_record_destroy(axolotl_type_base *type);
+void session_record_destroy(signal_type_base *type);
 
 #ifdef __cplusplus
 }
diff --git a/libs/libaxolotl/src/session_state.c b/libs/libaxolotl/src/session_state.c
index db787ebf72..94cf9d3014 100644
--- a/libs/libaxolotl/src/session_state.c
+++ b/libs/libaxolotl/src/session_state.c
@@ -7,8 +7,8 @@
 #include "hkdf.h"
 #include "curve.h"
 #include "ratchet.h"
-#include "axolotl_internal.h"
 #include "LocalStorageProtocol.pb-c.h"
+#include "signal_protocol_internal.h"
 
 #include "utlist.h"
 
@@ -53,7 +53,7 @@ typedef struct session_pending_pre_key
 
 struct session_state
 {
-    axolotl_type_base base;
+    signal_type_base base;
 
     uint32_t session_version;
     ec_public_key *local_identity_public;
@@ -79,7 +79,7 @@ struct session_state
     int needs_refresh;
     ec_public_key *alice_base_key;
 
-    axolotl_context *global_context;
+    signal_context *global_context;
 };
 
 static int session_state_serialize_prepare_sender_chain(
@@ -115,35 +115,35 @@ static void session_state_serialize_prepare_pending_pre_key_free(
 static int session_state_deserialize_protobuf_pending_key_exchange(
         session_pending_key_exchange *result_exchange,
         Textsecure__SessionStructure__PendingKeyExchange *exchange_structure,
-        axolotl_context *global_context);
+        signal_context *global_context);
 static int session_state_deserialize_protobuf_pending_pre_key(
         session_pending_pre_key *result_pre_key,
         Textsecure__SessionStructure__PendingPreKey *pre_key_structure,
-        axolotl_context *global_context);
+        signal_context *global_context);
 static int session_state_deserialize_protobuf_sender_chain(
         uint32_t session_version,
         session_state_sender_chain *chain,
         Textsecure__SessionStructure__Chain *chain_structure,
-        axolotl_context *global_context);
+        signal_context *global_context);
 static int session_state_deserialize_protobuf_receiver_chain(
         uint32_t session_version,
         session_state_receiver_chain *chain,
         Textsecure__SessionStructure__Chain *chain_structure,
-        axolotl_context *global_context);
+        signal_context *global_context);
 
 static void session_state_free_sender_chain(session_state *state);
 static void session_state_free_receiver_chain_node(session_state_receiver_chain *node);
 static void session_state_free_receiver_chain(session_state *state);
 static session_state_receiver_chain *session_state_find_receiver_chain(const session_state *state, const ec_public_key *sender_ephemeral);
 
-int session_state_create(session_state **state, axolotl_context *global_context)
+int session_state_create(session_state **state, signal_context *global_context)
 {
     session_state *result = malloc(sizeof(session_state));
     if(!result) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
     memset(result, 0, sizeof(session_state));
-    AXOLOTL_INIT(result, session_state_destroy);
+    SIGNAL_INIT(result, session_state_destroy);
     result->session_version = 2;
     result->global_context = global_context;
 
@@ -151,18 +151,18 @@ int session_state_create(session_state **state, axolotl_context *global_context)
     return 0;
 }
 
-int session_state_serialize(axolotl_buffer **buffer, session_state *state)
+int session_state_serialize(signal_buffer **buffer, session_state *state)
 {
     int result = 0;
     size_t result_size = 0;
     Textsecure__SessionStructure *state_structure = 0;
-    axolotl_buffer *result_buf = 0;
+    signal_buffer *result_buf = 0;
     size_t len = 0;
     uint8_t *data = 0;
 
     state_structure = malloc(sizeof(Textsecure__SessionStructure));
     if(!state_structure) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
     textsecure__session_structure__init(state_structure);
@@ -174,17 +174,17 @@ int session_state_serialize(axolotl_buffer **buffer, session_state *state)
 
     len = textsecure__session_structure__get_packed_size(state_structure);
 
-    result_buf = axolotl_buffer_alloc(len);
+    result_buf = signal_buffer_alloc(len);
     if(!result_buf) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
-    data = axolotl_buffer_data(result_buf);
+    data = signal_buffer_data(result_buf);
     result_size = textsecure__session_structure__pack(state_structure, data);
     if(result_size != len) {
-        axolotl_buffer_free(result_buf);
-        result = AX_ERR_INVALID_PROTO_BUF;
+        signal_buffer_free(result_buf);
+        result = SG_ERR_INVALID_PROTO_BUF;
         result_buf = 0;
         goto complete;
     }
@@ -199,7 +199,7 @@ complete:
     return result;
 }
 
-int session_state_deserialize(session_state **state, const uint8_t *data, size_t len, axolotl_context *global_context)
+int session_state_deserialize(session_state **state, const uint8_t *data, size_t len, signal_context *global_context)
 {
     int result = 0;
     session_state *result_state = 0;
@@ -207,7 +207,7 @@ int session_state_deserialize(session_state **state, const uint8_t *data, size_t
 
     session_structure = textsecure__session_structure__unpack(0, len, data);
     if(!session_structure) {
-        result = AX_ERR_INVALID_PROTO_BUF;
+        result = SG_ERR_INVALID_PROTO_BUF;
         goto complete;
     }
 
@@ -222,7 +222,7 @@ complete:
     }
     if(result_state) {
         if(result < 0) {
-            AXOLOTL_UNREF(result_state);
+            SIGNAL_UNREF(result_state);
         }
         else {
             *state = result_state;
@@ -275,7 +275,7 @@ int session_state_serialize_prepare(session_state *state, Textsecure__SessionStr
     if(state->has_sender_chain) {
         session_structure->senderchain = malloc(sizeof(Textsecure__SessionStructure__Chain));
         if(!session_structure->senderchain) {
-            result = AX_ERR_NOMEM;
+            result = SG_ERR_NOMEM;
             goto complete;
         }
         textsecure__session_structure__chain__init(session_structure->senderchain);
@@ -287,27 +287,25 @@ int session_state_serialize_prepare(session_state *state, Textsecure__SessionStr
     }
 
     if(state->receiver_chain_head) {
-        size_t i = 0;
-
-        unsigned int count;
+        size_t count, i = 0;
         session_state_receiver_chain *cur_node;
         DL_COUNT(state->receiver_chain_head, cur_node, count);
 
         if(count > SIZE_MAX / sizeof(Textsecure__SessionStructure__Chain *)) {
-            result = AX_ERR_NOMEM;
+            result = SG_ERR_NOMEM;
             goto complete;
         }
 
         session_structure->receiverchains = malloc(sizeof(Textsecure__SessionStructure__Chain *) * count);
         if(!session_structure->receiverchains) {
-            result = AX_ERR_NOMEM;
+            result = SG_ERR_NOMEM;
             goto complete;
         }
 
         DL_FOREACH(state->receiver_chain_head, cur_node) {
             session_structure->receiverchains[i] = malloc(sizeof(Textsecure__SessionStructure__Chain));
             if(!session_structure->receiverchains[i]) {
-                result = AX_ERR_NOMEM;
+                result = SG_ERR_NOMEM;
                 break;
             }
             textsecure__session_structure__chain__init(session_structure->receiverchains[i]);
@@ -326,7 +324,7 @@ int session_state_serialize_prepare(session_state *state, Textsecure__SessionStr
     if(state->has_pending_key_exchange) {
         session_structure->pendingkeyexchange = malloc(sizeof(Textsecure__SessionStructure__PendingKeyExchange));
         if(!session_structure->pendingkeyexchange) {
-            result = AX_ERR_NOMEM;
+            result = SG_ERR_NOMEM;
             goto complete;
         }
         textsecure__session_structure__pending_key_exchange__init(session_structure->pendingkeyexchange);
@@ -341,7 +339,7 @@ int session_state_serialize_prepare(session_state *state, Textsecure__SessionStr
     if(state->has_pending_pre_key) {
         session_structure->pendingprekey = malloc(sizeof(Textsecure__SessionStructure__PendingPreKey));
         if(!session_structure->pendingprekey) {
-            result = AX_ERR_NOMEM;
+            result = SG_ERR_NOMEM;
             goto complete;
         }
         textsecure__session_structure__pending_pre_key__init(session_structure->pendingprekey);
@@ -457,7 +455,7 @@ static int session_state_serialize_prepare_chain_chain_key(
     int result = 0;
     chain_structure->chainkey = malloc(sizeof(Textsecure__SessionStructure__Chain__ChainKey));
     if(!chain_structure->chainkey) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
     textsecure__session_structure__chain__chain_key__init(chain_structure->chainkey);
@@ -480,9 +478,7 @@ static int session_state_serialize_prepare_chain_message_keys_list(
         Textsecure__SessionStructure__Chain *chain_structure)
 {
     int result = 0;
-    size_t i = 0;
-    
-    unsigned int count;
+    size_t count, i = 0;
     message_keys_node *cur_node;
     DL_COUNT(message_keys_head, cur_node, count);
 
@@ -491,20 +487,20 @@ static int session_state_serialize_prepare_chain_message_keys_list(
     }
 
     if(count > SIZE_MAX / sizeof(Textsecure__SessionStructure__Chain__MessageKey *)) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
     chain_structure->messagekeys = malloc(sizeof(Textsecure__SessionStructure__Chain__MessageKey *) * count);
     if(!chain_structure->messagekeys) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
 
     DL_FOREACH(message_keys_head, cur_node) {
         chain_structure->messagekeys[i] = malloc(sizeof(Textsecure__SessionStructure__Chain__MessageKey));
         if(!chain_structure->messagekeys[i]) {
-            result = AX_ERR_NOMEM;
+            result = SG_ERR_NOMEM;
             break;
         }
         textsecure__session_structure__chain__message_key__init(chain_structure->messagekeys[i]);
@@ -535,7 +531,7 @@ static int session_state_serialize_prepare_message_keys(
 
     message_key_structure->cipherkey.data = malloc(sizeof(message_key->cipher_key));
     if(!message_key_structure->cipherkey.data) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
     memcpy(message_key_structure->cipherkey.data, message_key->cipher_key, sizeof(message_key->cipher_key));
@@ -544,7 +540,7 @@ static int session_state_serialize_prepare_message_keys(
 
     message_key_structure->mackey.data = malloc(sizeof(message_key->mac_key));
     if(!message_key_structure->mackey.data) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
     memcpy(message_key_structure->mackey.data, message_key->mac_key, sizeof(message_key->mac_key));
@@ -553,7 +549,7 @@ static int session_state_serialize_prepare_message_keys(
 
     message_key_structure->iv.data = malloc(sizeof(message_key->iv));
     if(!message_key_structure->iv.data) {
-        result = AX_ERR_NOMEM;
+        result = SG_ERR_NOMEM;
         goto complete;
     }
     memcpy(message_key_structure->iv.data, message_key->iv, sizeof(message_key->iv));
@@ -781,7 +777,7 @@ static void session_state_serialize_prepare_pending_pre_key_free(
     free(pre_key_structure);
 }
 
-int session_state_deserialize_protobuf(session_state **state, Textsecure__SessionStructure *session_structure, axolotl_context *global_context)
+int session_state_deserialize_protobuf(session_state **state, Textsecure__SessionStructure *session_structure, signal_context *global_context)
 {
     int result = 0;
     session_state *result_state  = 0;
@@ -828,7 +824,7 @@ int session_state_deserialize_protobuf(session_state **state, Textsecure__Sessio
                 &result_state->root_key, kdf,
                 session_structure->rootkey.data,
                 session_structure->rootkey.len, global_context);
-        AXOLOTL_UNREF(kdf);
+        SIGNAL_UNREF(kdf);
         if(result < 0) {
             goto complete;
         }
@@ -854,7 +850,7 @@ int session_state_deserialize_protobuf(session_state **state, Textsecure__Sessio
         for(i = 0; i < session_structure->n_receiverchains; i++) {
             session_state_receiver_chain *node = malloc(sizeof(session_state_receiver_chain));
             if(!node) {
-                result = AX_ERR_NOMEM;
+                result = SG_ERR_NOMEM;
                 goto complete;
             }
             memset(node, 0, sizeof(session_state_receiver_chain));
@@ -921,7 +917,7 @@ complete:
     }
     else {
         if(result_state) {
-            AXOLOTL_UNREF(result_state);
+            SIGNAL_UNREF(result_state);
         }
     }
     return result;
@@ -930,7 +926,7 @@ complete:
 static int session_state_deserialize_protobuf_pending_key_exchange(
         session_pending_key_exchange *result_exchange,
         Textsecure__SessionStructure__PendingKeyExchange *exchange_structure,
-        axolotl_context *global_context)
+        signal_context *global_context)
 {
     int result = 0;
 
@@ -1025,17 +1021,17 @@ static int session_state_deserialize_protobuf_pending_key_exchange(
     result_exchange->local_identity_key = local_identity_key;
 
 complete:
-    AXOLOTL_UNREF(local_base_key_public);
-    AXOLOTL_UNREF(local_base_key_private);
-    AXOLOTL_UNREF(local_ratchet_key_public);
-    AXOLOTL_UNREF(local_ratchet_key_private);
-    AXOLOTL_UNREF(local_identity_key_public);
-    AXOLOTL_UNREF(local_identity_key_private);
+    SIGNAL_UNREF(local_base_key_public);
+    SIGNAL_UNREF(local_base_key_private);
+    SIGNAL_UNREF(local_ratchet_key_public);
+    SIGNAL_UNREF(local_ratchet_key_private);
+    SIGNAL_UNREF(local_identity_key_public);
+    SIGNAL_UNREF(local_identity_key_private);
 
     if(result < 0) {
-        AXOLOTL_UNREF(local_base_key);
-        AXOLOTL_UNREF(local_ratchet_key);
-        AXOLOTL_UNREF(local_identity_key);
+        SIGNAL_UNREF(local_base_key);
+        SIGNAL_UNREF(local_ratchet_key);
+        SIGNAL_UNREF(local_identity_key);
     }
 
     return result;
@@ -1044,7 +1040,7 @@ complete:
 static int session_state_deserialize_protobuf_pending_pre_key(
         session_pending_pre_key *result_pre_key,
         Textsecure__SessionStructure__PendingPreKey *pre_key_structure,
-        axolotl_context *global_context)
+        signal_context *global_context)
 {
     int result = 0;
 
@@ -1077,7 +1073,7 @@ static int session_state_deserialize_protobuf_sender_chain(
         uint32_t session_version,
         session_state_sender_chain *chain,
         Textsecure__SessionStructure__Chain *chain_structure,
-        axolotl_context *global_context)
+        signal_context *global_context)
 {
     int result = 0;
     hkdf_context *kdf = 0;
@@ -1131,12 +1127,12 @@ static int session_state_deserialize_protobuf_sender_chain(
     chain->chain_key = sender_chain_key;
 
 complete:
-    AXOLOTL_UNREF(kdf);
-    AXOLOTL_UNREF(sender_ratchet_key_public);
-    AXOLOTL_UNREF(sender_ratchet_key_private);
+    SIGNAL_UNREF(kdf);
+    SIGNAL_UNREF(sender_ratchet_key_public);
+    SIGNAL_UNREF(sender_ratchet_key_private);
     if(result < 0) {
-        AXOLOTL_UNREF(sender_ratchet_key_pair);
-        AXOLOTL_UNREF(sender_chain_key);
+        SIGNAL_UNREF(sender_ratchet_key_pair);
+        SIGNAL_UNREF(sender_chain_key);
     }
     return result;
 }
@@ -1145,7 +1141,7 @@ static int session_state_deserialize_protobuf_receiver_chain(
         uint32_t session_version,
         session_state_receiver_chain *chain,
         Textsecure__SessionStructure__Chain *chain_structure,
-        axolotl_context *global_context)
+        signal_context *global_context)
 {
     int result = 0;
 
@@ -1189,7 +1185,7 @@ static int session_state_deserialize_protobuf_receiver_chain(
 
             message_keys_node *node = malloc(sizeof(message_keys_node));
             if(!node) {
-                result = AX_ERR_NOMEM;
+                result = SG_ERR_NOMEM;
                 goto complete;
             }
             memset(node, 0, sizeof(message_keys_node));
@@ -1216,16 +1212,16 @@ static int session_state_deserialize_protobuf_receiver_chain(
     chain->message_keys_head = message_keys_head;
 
 complete:
-    AXOLOTL_UNREF(kdf);
+    SIGNAL_UNREF(kdf);
     if(result < 0) {
-        AXOLOTL_UNREF(sender_ratchet_key);
-        AXOLOTL_UNREF(chain_key);
+        SIGNAL_UNREF(sender_ratchet_key);
+        SIGNAL_UNREF(chain_key);
         if(message_keys_head) {
             message_keys_node *cur_node;
             message_keys_node *tmp_node;
             DL_FOREACH_SAFE(message_keys_head, cur_node, tmp_node) {
                 DL_DELETE(message_keys_head, cur_node);
-                axolotl_explicit_bzero(&cur_node->message_key, sizeof(ratchet_message_keys));
+                signal_explicit_bzero(&cur_node->message_key, sizeof(ratchet_message_keys));
                 free(cur_node);
             }
         }
@@ -1233,10 +1229,10 @@ complete:
     return result;
 }
 
-int session_state_copy(session_state **state, session_state *other_state, axolotl_context *global_context)
+int session_state_copy(session_state **state, session_state *other_state, signal_context *global_context)
 {
     int result = 0;
-    axolotl_buffer *buffer = 0;
+    signal_buffer *buffer = 0;
     size_t len = 0;
     uint8_t *data = 0;
 
@@ -1248,8 +1244,8 @@ int session_state_copy(session_state **state, session_state *other_state, axolot
         goto complete;
     }
 
-    data = axolotl_buffer_data(buffer);
-    len = axolotl_buffer_len(buffer);
+    data = signal_buffer_data(buffer);
+    len = signal_buffer_len(buffer);
 
     result = session_state_deserialize(state, data, len, global_context);
     if(result < 0) {
@@ -1258,7 +1254,7 @@ int session_state_copy(session_state **state, session_state *other_state, axolot
 
 complete:
     if(buffer) {
-        axolotl_buffer_free(buffer);
+        signal_buffer_free(buffer);
     }
     return result;
 }
@@ -1280,9 +1276,9 @@ void session_state_set_local_identity_key(session_state *state, ec_public_key *i
     assert(state);
     assert(identity_key);
     if(state->local_identity_public) {
-        AXOLOTL_UNREF(state->local_identity_public);
+        SIGNAL_UNREF(state->local_identity_public);
     }
-    AXOLOTL_REF(identity_key);
+    SIGNAL_REF(identity_key);
     state->local_identity_public = identity_key;
 }
 
@@ -1297,9 +1293,9 @@ void session_state_set_remote_identity_key(session_state *state, ec_public_key *
     assert(state);
     assert(identity_key);
     if(state->remote_identity_public) {
-        AXOLOTL_UNREF(state->remote_identity_public);
+        SIGNAL_UNREF(state->remote_identity_public);
     }
-    AXOLOTL_REF(identity_key);
+    SIGNAL_REF(identity_key);
     state->remote_identity_public = identity_key;
 }
 
@@ -1314,9 +1310,9 @@ void session_state_set_root_key(session_state *state, ratchet_root_key *root_key
     assert(state);
     assert(root_key);
     if(state->root_key) {
-        AXOLOTL_UNREF(state->root_key);
+        SIGNAL_UNREF(state->root_key);
     }
-    AXOLOTL_REF(root_key);
+    SIGNAL_REF(root_key);
     state->root_key = root_key;
 }
 
@@ -1347,15 +1343,15 @@ void session_state_set_sender_chain(session_state *state, ec_key_pair *sender_ra
     state->has_sender_chain = 1;
 
     if(state->sender_chain.sender_ratchet_key_pair) {
-        AXOLOTL_UNREF(state->sender_chain.sender_ratchet_key_pair);
+        SIGNAL_UNREF(state->sender_chain.sender_ratchet_key_pair);
     }
-    AXOLOTL_REF(sender_ratchet_key_pair);
+    SIGNAL_REF(sender_ratchet_key_pair);
     state->sender_chain.sender_ratchet_key_pair = sender_ratchet_key_pair;
 
     if(state->sender_chain.chain_key) {
-        AXOLOTL_UNREF(state->sender_chain.chain_key);
+        SIGNAL_UNREF(state->sender_chain.chain_key);
     }
-    AXOLOTL_REF(chain_key);
+    SIGNAL_REF(chain_key);
     state->sender_chain.chain_key = chain_key;
 }
 
@@ -1387,14 +1383,14 @@ int session_state_set_sender_chain_key(session_state *state, ratchet_chain_key *
     assert(state);
     if(state->has_sender_chain) {
         if(state->sender_chain.chain_key) {
-            AXOLOTL_UNREF(state->sender_chain.chain_key);
+            SIGNAL_UNREF(state->sender_chain.chain_key);
         }
-        AXOLOTL_REF(chain_key);
+        SIGNAL_REF(chain_key);
         state->sender_chain.chain_key = chain_key;
         return 0;
     }
     else {
-        return AX_ERR_UNKNOWN;
+        return SG_ERR_UNKNOWN;
     }
 }
 
@@ -1447,7 +1443,7 @@ int session_state_remove_message_keys(session_state *state,
         if(cur_node->message_key.counter == counter) {
             memcpy(message_keys_result, &(cur_node->message_key), sizeof(ratchet_message_keys));
             DL_DELETE(chain->message_keys_head, cur_node);
-            axolotl_explicit_bzero(&cur_node->message_key, sizeof(ratchet_message_keys));
+            signal_explicit_bzero(&cur_node->message_key, sizeof(ratchet_message_keys));
             free(cur_node);
             return 1;
         }
@@ -1474,7 +1470,7 @@ int session_state_set_message_keys(session_state *state,
 
     node = malloc(sizeof(message_keys_node));
     if(!node) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
     memcpy(&(node->message_key), message_keys, sizeof(ratchet_message_keys));
     node->prev = 0;
@@ -1486,7 +1482,7 @@ int session_state_set_message_keys(session_state *state,
     while(count > MAX_MESSAGE_KEYS) {
         node = chain->message_keys_head;
         DL_DELETE(chain->message_keys_head, node);
-        axolotl_explicit_bzero(&node->message_key, sizeof(ratchet_message_keys));
+        signal_explicit_bzero(&node->message_key, sizeof(ratchet_message_keys));
         free(node);
         --count;
     }
@@ -1505,13 +1501,13 @@ int session_state_add_receiver_chain(session_state *state, ec_public_key *sender
 
     node = malloc(sizeof(session_state_receiver_chain));
     if(!node) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
     memset(node, 0, sizeof(session_state_receiver_chain));
 
-    AXOLOTL_REF(sender_ratchet_key);
+    SIGNAL_REF(sender_ratchet_key);
     node->sender_ratchet_key = sender_ratchet_key;
-    AXOLOTL_REF(chain_key);
+    SIGNAL_REF(chain_key);
     node->chain_key = chain_key;
 
     DL_APPEND(state->receiver_chain_head, node);
@@ -1538,13 +1534,13 @@ int session_state_set_receiver_chain_key(session_state *state, ec_public_key *se
 
     node = session_state_find_receiver_chain(state, sender_ephemeral);
     if(!node) {
-        axolotl_log(state->global_context, AX_LOG_WARNING, "Couldn't find receiver chain to set chain key on");
-        result = AX_ERR_UNKNOWN;
+        signal_log(state->global_context, SG_LOG_WARNING, "Couldn't find receiver chain to set chain key on");
+        result = SG_ERR_UNKNOWN;
         goto complete;
     }
 
-    AXOLOTL_UNREF(node->chain_key);
-    AXOLOTL_REF(chain_key);
+    SIGNAL_UNREF(node->chain_key);
+    SIGNAL_REF(chain_key);
     node->chain_key = chain_key;
 
 complete:
@@ -1589,21 +1585,21 @@ void session_state_set_pending_key_exchange(session_state *state,
     assert(our_identity_key);
 
     if(state->pending_key_exchange.local_base_key) {
-        AXOLOTL_UNREF(state->pending_key_exchange.local_base_key);
+        SIGNAL_UNREF(state->pending_key_exchange.local_base_key);
         state->pending_key_exchange.local_base_key = 0;
     }
     if(state->pending_key_exchange.local_ratchet_key) {
-        AXOLOTL_UNREF(state->pending_key_exchange.local_ratchet_key);
+        SIGNAL_UNREF(state->pending_key_exchange.local_ratchet_key);
         state->pending_key_exchange.local_ratchet_key = 0;
     }
     if(state->pending_key_exchange.local_identity_key) {
-        AXOLOTL_UNREF(state->pending_key_exchange.local_identity_key);
+        SIGNAL_UNREF(state->pending_key_exchange.local_identity_key);
         state->pending_key_exchange.local_identity_key = 0;
     }
 
-    AXOLOTL_REF(our_base_key);
-    AXOLOTL_REF(our_ratchet_key);
-    AXOLOTL_REF(our_identity_key);
+    SIGNAL_REF(our_base_key);
+    SIGNAL_REF(our_ratchet_key);
+    SIGNAL_REF(our_identity_key);
 
     state->has_pending_key_exchange = 1;
     state->pending_key_exchange.sequence = sequence;
@@ -1669,11 +1665,11 @@ void session_state_set_unacknowledged_pre_key_message(session_state *state,
     assert(base_key);
 
     if(state->pending_pre_key.base_key) {
-        AXOLOTL_UNREF(state->pending_pre_key.base_key);
+        SIGNAL_UNREF(state->pending_pre_key.base_key);
         state->pending_pre_key.base_key = 0;
     }
 
-    AXOLOTL_REF(base_key);
+    SIGNAL_REF(base_key);
 
     state->has_pending_pre_key = 1;
     if(pre_key_id) {
@@ -1723,7 +1719,7 @@ void session_state_clear_unacknowledged_pre_key_message(session_state *state)
 {
     assert(state);
     if(state->pending_pre_key.base_key) {
-        AXOLOTL_UNREF(state->pending_pre_key.base_key);
+        SIGNAL_UNREF(state->pending_pre_key.base_key);
     }
     memset(&state->pending_pre_key, 0, sizeof(state->pending_pre_key));
     state->has_pending_pre_key = 0;
@@ -1772,9 +1768,9 @@ void session_state_set_alice_base_key(session_state *state, ec_public_key *key)
     assert(key);
 
     if(state->alice_base_key) {
-        AXOLOTL_UNREF(state->alice_base_key);
+        SIGNAL_UNREF(state->alice_base_key);
     }
-    AXOLOTL_REF(key);
+    SIGNAL_REF(key);
     state->alice_base_key = key;
 }
 
@@ -1787,11 +1783,11 @@ ec_public_key *session_state_get_alice_base_key(const session_state *state)
 static void session_state_free_sender_chain(session_state *state)
 {
     if(state->sender_chain.sender_ratchet_key_pair) {
-        AXOLOTL_UNREF(state->sender_chain.sender_ratchet_key_pair);
+        SIGNAL_UNREF(state->sender_chain.sender_ratchet_key_pair);
         state->sender_chain.sender_ratchet_key_pair = 0;
     }
     if(state->sender_chain.chain_key) {
-        AXOLOTL_UNREF(state->sender_chain.chain_key);
+        SIGNAL_UNREF(state->sender_chain.chain_key);
         state->sender_chain.chain_key = 0;
     }
 
@@ -1800,7 +1796,7 @@ static void session_state_free_sender_chain(session_state *state)
         message_keys_node *tmp_node;
         DL_FOREACH_SAFE(state->sender_chain.message_keys_head, cur_node, tmp_node) {
             DL_DELETE(state->sender_chain.message_keys_head, cur_node);
-            axolotl_explicit_bzero(&cur_node->message_key, sizeof(ratchet_message_keys));
+            signal_explicit_bzero(&cur_node->message_key, sizeof(ratchet_message_keys));
             free(cur_node);
         }
         state->sender_chain.message_keys_head = 0;
@@ -1810,10 +1806,10 @@ static void session_state_free_sender_chain(session_state *state)
 static void session_state_free_receiver_chain_node(session_state_receiver_chain *node)
 {
     if(node->sender_ratchet_key) {
-        AXOLOTL_UNREF(node->sender_ratchet_key);
+        SIGNAL_UNREF(node->sender_ratchet_key);
     }
     if(node->chain_key) {
-        AXOLOTL_UNREF(node->chain_key);
+        SIGNAL_UNREF(node->chain_key);
     }
 
     if(node->message_keys_head) {
@@ -1821,7 +1817,7 @@ static void session_state_free_receiver_chain_node(session_state_receiver_chain
         message_keys_node *tmp_node;
         DL_FOREACH_SAFE(node->message_keys_head, cur_node, tmp_node) {
             DL_DELETE(node->message_keys_head, cur_node);
-            axolotl_explicit_bzero(&cur_node->message_key, sizeof(ratchet_message_keys));
+            signal_explicit_bzero(&cur_node->message_key, sizeof(ratchet_message_keys));
             free(cur_node);
         }
         node->message_keys_head = 0;
@@ -1841,39 +1837,39 @@ static void session_state_free_receiver_chain(session_state *state)
     state->receiver_chain_head = 0;
 }
 
-void session_state_destroy(axolotl_type_base *type)
+void session_state_destroy(signal_type_base *type)
 {
     session_state *state = (session_state *)type;
 
     if(state->local_identity_public) {
-        AXOLOTL_UNREF(state->local_identity_public);
+        SIGNAL_UNREF(state->local_identity_public);
     }
     if(state->remote_identity_public) {
-        AXOLOTL_UNREF(state->remote_identity_public);
+        SIGNAL_UNREF(state->remote_identity_public);
     }
     if(state->root_key) {
-        AXOLOTL_UNREF(state->root_key);
+        SIGNAL_UNREF(state->root_key);
     }
     session_state_free_sender_chain(state);
     session_state_free_receiver_chain(state);
     if(state->has_pending_key_exchange) {
         if(state->pending_key_exchange.local_base_key) {
-            AXOLOTL_UNREF(state->pending_key_exchange.local_base_key);
+            SIGNAL_UNREF(state->pending_key_exchange.local_base_key);
         }
         if(state->pending_key_exchange.local_ratchet_key) {
-            AXOLOTL_UNREF(state->pending_key_exchange.local_ratchet_key);
+            SIGNAL_UNREF(state->pending_key_exchange.local_ratchet_key);
         }
         if(state->pending_key_exchange.local_identity_key) {
-            AXOLOTL_UNREF(state->pending_key_exchange.local_identity_key);
+            SIGNAL_UNREF(state->pending_key_exchange.local_identity_key);
         }
     }
     if(state->has_pending_pre_key) {
         if(state->pending_pre_key.base_key) {
-            AXOLOTL_UNREF(state->pending_pre_key.base_key);
+            SIGNAL_UNREF(state->pending_pre_key.base_key);
         }
     }
     if(state->alice_base_key) {
-        AXOLOTL_UNREF(state->alice_base_key);
+        SIGNAL_UNREF(state->alice_base_key);
     }
     free(state);
 }
diff --git a/libs/libaxolotl/src/session_state.h b/libs/libaxolotl/src/session_state.h
index 119e523fc9..ef1ecaed97 100644
--- a/libs/libaxolotl/src/session_state.h
+++ b/libs/libaxolotl/src/session_state.h
@@ -3,7 +3,7 @@
 
 #include <stdint.h>
 #include <stddef.h>
-#include "axolotl_types.h"
+#include "signal_protocol_types.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -11,10 +11,10 @@ extern "C" {
 
 /*------------------------------------------------------------------------*/
 
-int session_state_create(session_state **state, axolotl_context *global_context);
-int session_state_serialize(axolotl_buffer **buffer, session_state *state);
-int session_state_deserialize(session_state **state, const uint8_t *data, size_t len, axolotl_context *global_context);
-int session_state_copy(session_state **state, session_state *other_state, axolotl_context *global_context);
+int session_state_create(session_state **state, signal_context *global_context);
+int session_state_serialize(signal_buffer **buffer, session_state *state);
+int session_state_deserialize(session_state **state, const uint8_t *data, size_t len, signal_context *global_context);
+int session_state_copy(session_state **state, session_state *other_state, signal_context *global_context);
 
 void session_state_set_session_version(session_state *state, uint32_t version);
 uint32_t session_state_get_session_version(const session_state *state);
@@ -80,7 +80,7 @@ int session_state_get_needs_refresh(const session_state *state);
 void session_state_set_alice_base_key(session_state *state, ec_public_key *key);
 ec_public_key *session_state_get_alice_base_key(const session_state *state);
 
-void session_state_destroy(axolotl_type_base *type);
+void session_state_destroy(signal_type_base *type);
 
 #ifdef __cplusplus
 }
diff --git a/libs/libaxolotl/src/signal.def b/libs/libaxolotl/src/signal.def
new file mode 100755
index 0000000000..93cf408531
--- /dev/null
+++ b/libs/libaxolotl/src/signal.def
@@ -0,0 +1,55 @@
+LIBRARY libsignal-c.mir
+
+EXPORTS
+   signal_type_ref
+   signal_type_unref
+   signal_buffer_alloc
+   signal_buffer_create
+   signal_buffer_copy
+   signal_buffer_append
+   signal_buffer_data
+   signal_buffer_len
+   signal_buffer_compare
+   signal_buffer_free
+   signal_buffer_bzero_free
+   signal_buffer_list_alloc
+   signal_buffer_list_push
+   signal_buffer_list_size
+   signal_buffer_list_free
+   signal_int_list_alloc
+   signal_int_list_push_back
+   signal_int_list_size
+   signal_int_list_at
+   signal_int_list_free
+   signal_context_create
+   signal_context_set_crypto_provider
+   signal_context_set_locking_functions
+   signal_context_set_log_function
+   signal_context_destroy
+   signal_protocol_store_context_create
+   signal_protocol_store_context_set_session_store
+   signal_protocol_store_context_set_pre_key_store
+   signal_protocol_store_context_set_signed_pre_key_store
+   signal_protocol_store_context_set_identity_key_store
+   signal_protocol_store_context_set_sender_key_store
+   signal_protocol_store_context_destroy
+   signal_protocol_session_load_session
+   signal_protocol_session_get_sub_device_sessions
+   signal_protocol_session_store_session
+   signal_protocol_session_contains_session
+   signal_protocol_session_delete_session
+   signal_protocol_session_delete_all_sessions
+   signal_protocol_pre_key_load_key
+   signal_protocol_pre_key_store_key
+   signal_protocol_pre_key_contains_key
+   signal_protocol_pre_key_remove_key
+   signal_protocol_signed_pre_key_load_key
+   signal_protocol_signed_pre_key_store_key
+   signal_protocol_signed_pre_key_contains_key
+   signal_protocol_signed_pre_key_remove_key
+   signal_protocol_identity_get_key_pair
+   signal_protocol_identity_get_local_registration_id
+   signal_protocol_identity_save_identity
+   signal_protocol_identity_is_trusted_identity
+   signal_protocol_sender_key_store_key
+   signal_protocol_sender_key_load_key
diff --git a/libs/libaxolotl/src/axolotl.c b/libs/libaxolotl/src/signal_protocol.c
index 7db1cbfc88..30368ae3b6 100644
--- a/libs/libaxolotl/src/axolotl.c
+++ b/libs/libaxolotl/src/signal_protocol.c
@@ -1,5 +1,4 @@
-#include "axolotl.h"
-#include "axolotl_internal.h"
+#include "signal_protocol.h"
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -7,6 +6,8 @@
 #include <string.h>
 #include <stdarg.h>
 #include <assert.h>
+
+#include "signal_protocol_internal.h"
 #include "utlist.h"
 #include "utarray.h"
 
@@ -20,17 +21,17 @@ int type_ref_count = 0;
 int type_unref_count = 0;
 #endif
 
-struct axolotl_store_context {
-    axolotl_context *global_context;
-    axolotl_session_store session_store;
-    axolotl_pre_key_store pre_key_store;
-    axolotl_signed_pre_key_store signed_pre_key_store;
-    axolotl_identity_key_store identity_key_store;
-    axolotl_sender_key_store sender_key_store;
+struct signal_protocol_store_context {
+    signal_context *global_context;
+    signal_protocol_session_store session_store;
+    signal_protocol_pre_key_store pre_key_store;
+    signal_protocol_signed_pre_key_store signed_pre_key_store;
+    signal_protocol_identity_key_store identity_key_store;
+    signal_protocol_sender_key_store sender_key_store;
 };
 
-void axolotl_type_init(axolotl_type_base *instance,
-        void (*destroy_func)(axolotl_type_base *instance))
+void signal_type_init(signal_type_base *instance,
+        void (*destroy_func)(signal_type_base *instance))
 {
     instance->ref_count = 1;
     instance->destroy = destroy_func;
@@ -39,7 +40,7 @@ void axolotl_type_init(axolotl_type_base *instance,
 #endif
 }
 
-void axolotl_type_ref(axolotl_type_base *instance)
+void signal_type_ref(signal_type_base *instance)
 {
 #ifdef DEBUG_REFCOUNT
     type_ref_count++;
@@ -49,7 +50,7 @@ void axolotl_type_ref(axolotl_type_base *instance)
     instance->ref_count++;
 }
 
-void axolotl_type_unref(axolotl_type_base *instance)
+void signal_type_unref(signal_type_base *instance)
 {
     if(instance) {
 #ifdef DEBUG_REFCOUNT
@@ -66,31 +67,34 @@ void axolotl_type_unref(axolotl_type_base *instance)
 }
 
 #ifdef DEBUG_REFCOUNT
-int axolotl_type_ref_count(axolotl_type_base *instance)
+int signal_type_ref_count(signal_type_base *instance)
 {
+    if(!instance) {
+        return 0;
+    }
     return instance->ref_count;
 }
 #endif
 
 /*------------------------------------------------------------------------*/
 
-axolotl_buffer *axolotl_buffer_alloc(size_t len)
+signal_buffer *signal_buffer_alloc(size_t len)
 {
-    axolotl_buffer *buffer;
-    if(len > (SIZE_MAX - sizeof(struct axolotl_buffer)) / sizeof(uint8_t)) {
+    signal_buffer *buffer;
+    if(len > (SIZE_MAX - sizeof(struct signal_buffer)) / sizeof(uint8_t)) {
         return 0;
     }
 
-    buffer = malloc(sizeof(struct axolotl_buffer) + (sizeof(uint8_t) * len));
+    buffer = malloc(sizeof(struct signal_buffer) + (sizeof(uint8_t) * len));
     if(buffer) {
         buffer->len = len;
     }
     return buffer;
 }
 
-axolotl_buffer *axolotl_buffer_create(const uint8_t *data, size_t len)
+signal_buffer *signal_buffer_create(const uint8_t *data, size_t len)
 {
-    axolotl_buffer *buffer = axolotl_buffer_alloc(len);
+    signal_buffer *buffer = signal_buffer_alloc(len);
     if(!buffer) {
         return 0;
     }
@@ -99,16 +103,22 @@ axolotl_buffer *axolotl_buffer_create(const uint8_t *data, size_t len)
     return buffer;
 }
 
-axolotl_buffer *axolotl_buffer_copy(const axolotl_buffer *buffer)
+signal_buffer *signal_buffer_copy(const signal_buffer *buffer)
 {
-    return axolotl_buffer_create(buffer->data, buffer->len);
+    return signal_buffer_create(buffer->data, buffer->len);
 }
 
-axolotl_buffer *axolotl_buffer_append(axolotl_buffer *buffer, const uint8_t *data, size_t len)
+signal_buffer *signal_buffer_append(signal_buffer *buffer, const uint8_t *data, size_t len)
 {
+    signal_buffer *tmp_buffer;
     size_t previous_size = buffer->len;
-    size_t previous_alloc = sizeof(struct axolotl_buffer) + (sizeof(uint8_t) * previous_size);
-    axolotl_buffer *tmp_buffer = realloc(buffer, previous_alloc + (sizeof(uint8_t) * len));
+    size_t previous_alloc = sizeof(struct signal_buffer) + (sizeof(uint8_t) * previous_size);
+
+    if(len > (SIZE_MAX - previous_alloc)) {
+        return 0;
+    }
+
+    tmp_buffer = realloc(buffer, previous_alloc + (sizeof(uint8_t) * len));
     if(!tmp_buffer) {
         return 0;
     }
@@ -118,17 +128,17 @@ axolotl_buffer *axolotl_buffer_append(axolotl_buffer *buffer, const uint8_t *dat
     return tmp_buffer;
 }
 
-uint8_t *axolotl_buffer_data(axolotl_buffer *buffer)
+uint8_t *signal_buffer_data(signal_buffer *buffer)
 {
     return buffer->data;
 }
 
-size_t axolotl_buffer_len(axolotl_buffer *buffer)
+size_t signal_buffer_len(signal_buffer *buffer)
 {
     return buffer->len;
 }
 
-int axolotl_buffer_compare(axolotl_buffer *buffer1, axolotl_buffer *buffer2)
+int signal_buffer_compare(signal_buffer *buffer1, signal_buffer *buffer2)
 {
     if(buffer1 == buffer2) {
         return 0;
@@ -147,65 +157,65 @@ int axolotl_buffer_compare(axolotl_buffer *buffer1, axolotl_buffer *buffer2)
             return 1;
         }
         else {
-            return axolotl_constant_memcmp(buffer1->data, buffer2->data, buffer1->len);
+            return signal_constant_memcmp(buffer1->data, buffer2->data, buffer1->len);
         }
     }
 }
 
-void axolotl_buffer_free(axolotl_buffer *buffer)
+void signal_buffer_free(signal_buffer *buffer)
 {
     if(buffer) {
         free(buffer);
     }
 }
 
-void axolotl_buffer_bzero_free(axolotl_buffer *buffer)
+void signal_buffer_bzero_free(signal_buffer *buffer)
 {
     if(buffer) {
-        axolotl_explicit_bzero(buffer->data, buffer->len);
+        signal_explicit_bzero(buffer->data, buffer->len);
         free(buffer);
     }
 }
 
 /*------------------------------------------------------------------------*/
 
-typedef struct axolotl_buffer_list_node
+typedef struct signal_buffer_list_node
 {
-    axolotl_buffer *buffer;
-    struct axolotl_buffer_list_node *next;
-} axolotl_buffer_list_node;
+    signal_buffer *buffer;
+    struct signal_buffer_list_node *next;
+} signal_buffer_list_node;
 
-struct axolotl_buffer_list
+struct signal_buffer_list
 {
     int size;
-    axolotl_buffer_list_node *head;
+    signal_buffer_list_node *head;
 };
 
-struct axolotl_int_list
+struct signal_int_list
 {
     UT_array *values;
 };
 
-axolotl_buffer_list *axolotl_buffer_list_alloc()
+signal_buffer_list *signal_buffer_list_alloc(void)
 {
-    axolotl_buffer_list *list = malloc(sizeof(axolotl_buffer_list));
+    signal_buffer_list *list = malloc(sizeof(signal_buffer_list));
     if(list) {
-        memset(list, 0, sizeof(axolotl_buffer_list));
+        memset(list, 0, sizeof(signal_buffer_list));
     }
     return list;
 }
 
-int axolotl_buffer_list_push(axolotl_buffer_list *list, axolotl_buffer *buffer)
+int signal_buffer_list_push(signal_buffer_list *list, signal_buffer *buffer)
 {
-    axolotl_buffer_list_node *node = 0;
+    signal_buffer_list_node *node = 0;
 
     assert(list);
     assert(buffer);
 
-    node = malloc(sizeof(axolotl_buffer_list_node));
+    node = malloc(sizeof(signal_buffer_list_node));
 
     if(!node) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
 
     node->buffer = buffer;
@@ -214,61 +224,61 @@ int axolotl_buffer_list_push(axolotl_buffer_list *list, axolotl_buffer *buffer)
     return 0;
 }
 
-int axolotl_buffer_list_size(axolotl_buffer_list *list)
+int signal_buffer_list_size(signal_buffer_list *list)
 {
     assert(list);
     return list->size;
 }
 
-void axolotl_buffer_list_free(axolotl_buffer_list *list)
+void signal_buffer_list_free(signal_buffer_list *list)
 {
-    axolotl_buffer_list_node *cur_node;
-    axolotl_buffer_list_node *tmp_node;
+    signal_buffer_list_node *cur_node;
+    signal_buffer_list_node *tmp_node;
 
     assert(list);
 
     LL_FOREACH_SAFE(list->head, cur_node, tmp_node) {
         LL_DELETE(list->head, cur_node);
         if(cur_node->buffer) {
-            axolotl_buffer_free(cur_node->buffer);
+            signal_buffer_free(cur_node->buffer);
         }
         free(cur_node);
     }
     free(list);
 }
-axolotl_int_list *axolotl_int_list_alloc();
+signal_int_list *signal_int_list_alloc();
 
 /*------------------------------------------------------------------------*/
 
-axolotl_int_list *axolotl_int_list_alloc()
+signal_int_list *signal_int_list_alloc()
 {
-    axolotl_int_list *list = malloc(sizeof(axolotl_int_list));
+    signal_int_list *list = malloc(sizeof(signal_int_list));
     if(!list) {
         return 0;
     }
-    memset(list, 0, sizeof(axolotl_int_list));
+    memset(list, 0, sizeof(signal_int_list));
     utarray_new(list->values, &ut_int_icd);
     return list;
 }
 
-void axolotl_int_list_push_back(axolotl_int_list *list, int value)
+void signal_int_list_push_back(signal_int_list *list, int value)
 {
     assert(list);
     utarray_push_back(list->values, &value);
 }
 
-unsigned int axolotl_int_list_size(axolotl_int_list *list)
+unsigned int signal_int_list_size(signal_int_list *list)
 {
     assert(list);
     return utarray_len(list->values);
 }
 
-int axolotl_int_list_at(axolotl_int_list *list, unsigned int index)
+int signal_int_list_at(signal_int_list *list, unsigned int index)
 {
     int *value = 0;
 
     assert(list);
-    assert(index >= 0 && index < utarray_len(list->values));
+    assert(index < utarray_len(list->values));
 
     value = (int *)utarray_eltptr(list->values, index);
 
@@ -277,7 +287,7 @@ int axolotl_int_list_at(axolotl_int_list *list, unsigned int index)
     return *value;
 }
 
-void axolotl_int_list_free(axolotl_int_list *list)
+void signal_int_list_free(signal_int_list *list)
 {
     if(list) {
         utarray_free(list->values);
@@ -287,13 +297,13 @@ void axolotl_int_list_free(axolotl_int_list *list)
 
 /*------------------------------------------------------------------------*/
 
-int axolotl_context_create(axolotl_context **context, void *user_data)
+int signal_context_create(signal_context **context, void *user_data)
 {
-    *context = malloc(sizeof(axolotl_context));
+    *context = malloc(sizeof(signal_context));
     if(!(*context)) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
-    memset(*context, 0, sizeof(axolotl_context));
+    memset(*context, 0, sizeof(signal_context));
     (*context)->user_data = user_data;
 #ifdef DEBUG_REFCOUNT
     type_ref_count = 0;
@@ -302,7 +312,7 @@ int axolotl_context_create(axolotl_context **context, void *user_data)
     return 0;
 }
 
-int axolotl_context_set_crypto_provider(axolotl_context *context, const axolotl_crypto_provider *crypto_provider)
+int signal_context_set_crypto_provider(signal_context *context, const signal_crypto_provider *crypto_provider)
 {
     assert(context);
     if(!crypto_provider
@@ -310,18 +320,18 @@ int axolotl_context_set_crypto_provider(axolotl_context *context, const axolotl_
             || !crypto_provider->hmac_sha256_update_func
             || !crypto_provider->hmac_sha256_final_func
             || !crypto_provider->hmac_sha256_cleanup_func) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
-    memcpy(&(context->crypto_provider), crypto_provider, sizeof(axolotl_crypto_provider));
+    memcpy(&(context->crypto_provider), crypto_provider, sizeof(signal_crypto_provider));
     return 0;
 }
 
-int axolotl_context_set_locking_functions(axolotl_context *context,
+int signal_context_set_locking_functions(signal_context *context,
         void (*lock)(void *user_data), void (*unlock)(void *user_data))
 {
     assert(context);
     if((lock && !unlock) || (!lock && unlock)) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
 
     context->lock = lock;
@@ -329,7 +339,7 @@ int axolotl_context_set_locking_functions(axolotl_context *context,
     return 0;
 }
 
-int axolotl_context_set_log_function(axolotl_context *context,
+int signal_context_set_log_function(signal_context *context,
         void (*log)(int level, const char *message, size_t len, void *user_data))
 {
     assert(context);
@@ -337,7 +347,7 @@ int axolotl_context_set_log_function(axolotl_context *context,
     return 0;
 }
 
-void axolotl_context_destroy(axolotl_context *context)
+void signal_context_destroy(signal_context *context)
 {
 #ifdef DEBUG_REFCOUNT
     fprintf(stderr, "Global REF count: %d\n", type_ref_count);
@@ -350,50 +360,71 @@ void axolotl_context_destroy(axolotl_context *context)
 
 /*------------------------------------------------------------------------*/
 
-int axolotl_crypto_random(axolotl_context *context, uint8_t *data, size_t len)
+int signal_crypto_random(signal_context *context, uint8_t *data, size_t len)
 {
     assert(context);
     assert(context->crypto_provider.random_func);
     return context->crypto_provider.random_func(data, len, context->crypto_provider.user_data);
 }
 
-int axolotl_hmac_sha256_init(axolotl_context *context, void **hmac_context, const uint8_t *key, size_t key_len)
+int signal_hmac_sha256_init(signal_context *context, void **hmac_context, const uint8_t *key, size_t key_len)
 {
     assert(context);
     assert(context->crypto_provider.hmac_sha256_init_func);
     return context->crypto_provider.hmac_sha256_init_func(hmac_context, key, key_len, context->crypto_provider.user_data);
 }
 
-int axolotl_hmac_sha256_update(axolotl_context *context, void *hmac_context, const uint8_t *data, size_t data_len)
+int signal_hmac_sha256_update(signal_context *context, void *hmac_context, const uint8_t *data, size_t data_len)
 {
     assert(context);
     assert(context->crypto_provider.hmac_sha256_update_func);
     return context->crypto_provider.hmac_sha256_update_func(hmac_context, data, data_len, context->crypto_provider.user_data);
 }
 
-int axolotl_hmac_sha256_final(axolotl_context *context, void *hmac_context, axolotl_buffer **output)
+int signal_hmac_sha256_final(signal_context *context, void *hmac_context, signal_buffer **output)
 {
     assert(context);
     assert(context->crypto_provider.hmac_sha256_final_func);
     return context->crypto_provider.hmac_sha256_final_func(hmac_context, output, context->crypto_provider.user_data);
 }
 
-void axolotl_hmac_sha256_cleanup(axolotl_context *context, void *hmac_context)
+void signal_hmac_sha256_cleanup(signal_context *context, void *hmac_context)
 {
     assert(context);
     assert(context->crypto_provider.hmac_sha256_cleanup_func);
     context->crypto_provider.hmac_sha256_cleanup_func(hmac_context, context->crypto_provider.user_data);
 }
 
-int axolotl_sha512_digest(axolotl_context *context, axolotl_buffer **output, const uint8_t *data, size_t data_len)
+int signal_sha512_digest_init(signal_context *context, void **digest_context)
+{
+    assert(context);
+    assert(context->crypto_provider.sha512_digest_init_func);
+    return context->crypto_provider.sha512_digest_init_func(digest_context, context->crypto_provider.user_data);
+}
+
+int signal_sha512_digest_update(signal_context *context, void *digest_context, const uint8_t *data, size_t data_len)
 {
     assert(context);
-    assert(context->crypto_provider.sha512_digest_func);
-    return context->crypto_provider.sha512_digest_func(output, data, data_len, context->crypto_provider.user_data);
+    assert(context->crypto_provider.sha512_digest_update_func);
+    return context->crypto_provider.sha512_digest_update_func(digest_context, data, data_len, context->crypto_provider.user_data);
 }
 
-int axolotl_encrypt(axolotl_context *context,
-        axolotl_buffer **output,
+int signal_sha512_digest_final(signal_context *context, void *digest_context, signal_buffer **output)
+{
+    assert(context);
+    assert(context->crypto_provider.sha512_digest_final_func);
+    return context->crypto_provider.sha512_digest_final_func(digest_context, output, context->crypto_provider.user_data);
+}
+
+void signal_sha512_digest_cleanup(signal_context *context, void *digest_context)
+{
+    assert(context);
+    assert(context->crypto_provider.sha512_digest_cleanup_func);
+    return context->crypto_provider.sha512_digest_cleanup_func(digest_context, context->crypto_provider.user_data);
+}
+
+int signal_encrypt(signal_context *context,
+        signal_buffer **output,
         int cipher,
         const uint8_t *key, size_t key_len,
         const uint8_t *iv, size_t iv_len,
@@ -407,8 +438,8 @@ int axolotl_encrypt(axolotl_context *context,
             context->crypto_provider.user_data);
 }
 
-int axolotl_decrypt(axolotl_context *context,
-        axolotl_buffer **output,
+int signal_decrypt(signal_context *context,
+        signal_buffer **output,
         int cipher,
         const uint8_t *key, size_t key_len,
         const uint8_t *iv, size_t iv_len,
@@ -422,25 +453,25 @@ int axolotl_decrypt(axolotl_context *context,
             context->crypto_provider.user_data);
 }
 
-void axolotl_lock(axolotl_context *context)
+void signal_lock(signal_context *context)
 {
     if(context->lock) {
         context->lock(context->user_data);
     }
 }
 
-void axolotl_unlock(axolotl_context *context)
+void signal_unlock(signal_context *context)
 {
     if(context->unlock) {
         context->unlock(context->user_data);
     }
 }
 
-void axolotl_log(axolotl_context *context, int level, const char *format, ...)
+void signal_log(signal_context *context, int level, const char *format, ...)
 {
     char buf[256];
     int n;
-    if(context->log) {
+    if(context && context->log) {
         va_list args;
         va_start(args, format);
         n = vsnprintf(buf, sizeof(buf), format, args);
@@ -451,7 +482,7 @@ void axolotl_log(axolotl_context *context, int level, const char *format, ...)
     }
 }
 
-void axolotl_explicit_bzero(void *v, size_t n)
+void signal_explicit_bzero(void *v, size_t n)
 {
 #ifdef HAVE_SECUREZEROMEMORY
     SecureZeroMemory(v, n);
@@ -463,7 +494,7 @@ void axolotl_explicit_bzero(void *v, size_t n)
 #endif
 }
 
-int axolotl_constant_memcmp(const void *s1, const void *s2, size_t n)
+int signal_constant_memcmp(const void *s1, const void *s2, size_t n)
 {
     size_t i;
     const unsigned char *c1 = (const unsigned char *) s1;
@@ -477,7 +508,7 @@ int axolotl_constant_memcmp(const void *s1, const void *s2, size_t n)
     return result;
 }
 
-void axolotl_str_serialize_protobuf(ProtobufCBinaryData *buffer, const char *str)
+void signal_protocol_str_serialize_protobuf(ProtobufCBinaryData *buffer, const char *str)
 {
     assert(buffer);
     assert(str);
@@ -485,7 +516,7 @@ void axolotl_str_serialize_protobuf(ProtobufCBinaryData *buffer, const char *str
     buffer->len = strlen(str);
 }
 
-char *axolotl_str_deserialize_protobuf(ProtobufCBinaryData *buffer)
+char *signal_protocol_str_deserialize_protobuf(ProtobufCBinaryData *buffer)
 {
     char *str = 0;
     assert(buffer);
@@ -503,64 +534,64 @@ char *axolotl_str_deserialize_protobuf(ProtobufCBinaryData *buffer)
 
 /*------------------------------------------------------------------------*/
 
-int axolotl_store_context_create(axolotl_store_context **context, axolotl_context *global_context)
+int signal_protocol_store_context_create(signal_protocol_store_context **context, signal_context *global_context)
 {
     assert(global_context);
-    *context = malloc(sizeof(axolotl_store_context));
+    *context = malloc(sizeof(signal_protocol_store_context));
     if(!(*context)) {
-        return AX_ERR_NOMEM;
+        return SG_ERR_NOMEM;
     }
-    memset(*context, 0, sizeof(axolotl_store_context));
+    memset(*context, 0, sizeof(signal_protocol_store_context));
     (*context)->global_context = global_context;
     return 0;
 }
 
-int axolotl_store_context_set_session_store(axolotl_store_context *context, const axolotl_session_store *store)
+int signal_protocol_store_context_set_session_store(signal_protocol_store_context *context, const signal_protocol_session_store *store)
 {
     if(!store) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
-    memcpy(&(context->session_store), store, sizeof(axolotl_session_store));
+    memcpy(&(context->session_store), store, sizeof(signal_protocol_session_store));
     return 0;
 }
 
-int axolotl_store_context_set_pre_key_store(axolotl_store_context *context, const axolotl_pre_key_store *store)
+int signal_protocol_store_context_set_pre_key_store(signal_protocol_store_context *context, const signal_protocol_pre_key_store *store)
 {
     if(!store) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
-    memcpy(&(context->pre_key_store), store, sizeof(axolotl_pre_key_store));
+    memcpy(&(context->pre_key_store), store, sizeof(signal_protocol_pre_key_store));
     return 0;
 }
 
-int axolotl_store_context_set_signed_pre_key_store(axolotl_store_context *context, const axolotl_signed_pre_key_store *store)
+int signal_protocol_store_context_set_signed_pre_key_store(signal_protocol_store_context *context, const signal_protocol_signed_pre_key_store *store)
 {
     if(!store) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
-    memcpy(&(context->signed_pre_key_store), store, sizeof(axolotl_signed_pre_key_store));
+    memcpy(&(context->signed_pre_key_store), store, sizeof(signal_protocol_signed_pre_key_store));
     return 0;
 }
 
-int axolotl_store_context_set_identity_key_store(axolotl_store_context *context, const axolotl_identity_key_store *store)
+int signal_protocol_store_context_set_identity_key_store(signal_protocol_store_context *context, const signal_protocol_identity_key_store *store)
 {
     if(!store) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
-    memcpy(&(context->identity_key_store), store, sizeof(axolotl_identity_key_store));
+    memcpy(&(context->identity_key_store), store, sizeof(signal_protocol_identity_key_store));
     return 0;
 }
 
-int axolotl_store_context_set_sender_key_store(axolotl_store_context *context, const axolotl_sender_key_store *store)
+int signal_protocol_store_context_set_sender_key_store(signal_protocol_store_context *context, const signal_protocol_sender_key_store *store)
 {
     if(!store) {
-        return AX_ERR_INVAL;
+        return SG_ERR_INVAL;
     }
-    memcpy(&(context->sender_key_store), store, sizeof(axolotl_sender_key_store));
+    memcpy(&(context->sender_key_store), store, sizeof(signal_protocol_sender_key_store));
     return 0;
 }
 
-void axolotl_store_context_destroy(axolotl_store_context *context)
+void signal_protocol_store_context_destroy(signal_protocol_store_context *context)
 {
     if(context) {
         if(context->session_store.destroy_func) {
@@ -584,10 +615,10 @@ void axolotl_store_context_destroy(axolotl_store_context *context)
 
 /*------------------------------------------------------------------------*/
 
-int axolotl_session_load_session(axolotl_store_context *context, session_record **record, const axolotl_address *address)
+int signal_protocol_session_load_session(signal_protocol_store_context *context, session_record **record, const signal_protocol_address *address)
 {
     int result = 0;
-    axolotl_buffer *buffer = 0;
+    signal_buffer *buffer = 0;
     session_record *result_record = 0;
 
     assert(context);
@@ -602,7 +633,7 @@ int axolotl_session_load_session(axolotl_store_context *context, session_record
 
     if(result == 0) {
         if(buffer) {
-            result = AX_ERR_UNKNOWN;
+            result = SG_ERR_UNKNOWN;
             goto complete;
         }
         result = session_record_create(&result_record, 0, context->global_context);
@@ -613,15 +644,15 @@ int axolotl_session_load_session(axolotl_store_context *context, session_record
             goto complete;
         }
         result = session_record_deserialize(&result_record,
-                axolotl_buffer_data(buffer), axolotl_buffer_len(buffer), context->global_context);
+                signal_buffer_data(buffer), signal_buffer_len(buffer), context->global_context);
     }
     else {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
     }
 
 complete:
     if(buffer) {
-        axolotl_buffer_free(buffer);
+        signal_buffer_free(buffer);
     }
     if(result >= 0) {
         *record = result_record;
@@ -629,7 +660,7 @@ complete:
     return result;
 }
 
-int axolotl_session_get_sub_device_sessions(axolotl_store_context *context, axolotl_int_list **sessions, const char *name, size_t name_len)
+int signal_protocol_session_get_sub_device_sessions(signal_protocol_store_context *context, signal_int_list **sessions, const char *name, size_t name_len)
 {
     assert(context);
     assert(context->session_store.get_sub_device_sessions_func);
@@ -639,10 +670,10 @@ int axolotl_session_get_sub_device_sessions(axolotl_store_context *context, axol
             context->session_store.user_data);
 }
 
-int axolotl_session_store_session(axolotl_store_context *context, const axolotl_address *address, session_record *record)
+int signal_protocol_session_store_session(signal_protocol_store_context *context, const signal_protocol_address *address, session_record *record)
 {
     int result = 0;
-    axolotl_buffer *buffer = 0;
+    signal_buffer *buffer = 0;
 
     assert(context);
     assert(context->session_store.store_session_func);
@@ -655,18 +686,18 @@ int axolotl_session_store_session(axolotl_store_context *context, const axolotl_
 
     result = context->session_store.store_session_func(
             address,
-            axolotl_buffer_data(buffer), axolotl_buffer_len(buffer),
+            signal_buffer_data(buffer), signal_buffer_len(buffer),
             context->session_store.user_data);
 
 complete:
     if(buffer) {
-        axolotl_buffer_free(buffer);
+        signal_buffer_free(buffer);
     }
 
     return result;
 }
 
-int axolotl_session_contains_session(axolotl_store_context *context, const axolotl_address *address)
+int signal_protocol_session_contains_session(signal_protocol_store_context *context, const signal_protocol_address *address)
 {
     assert(context);
     assert(context->session_store.contains_session_func);
@@ -676,7 +707,7 @@ int axolotl_session_contains_session(axolotl_store_context *context, const axolo
             context->session_store.user_data);
 }
 
-int axolotl_session_delete_session(axolotl_store_context *context, const axolotl_address *address)
+int signal_protocol_session_delete_session(signal_protocol_store_context *context, const signal_protocol_address *address)
 {
     assert(context);
     assert(context->session_store.delete_session_func);
@@ -686,7 +717,7 @@ int axolotl_session_delete_session(axolotl_store_context *context, const axolotl
             context->session_store.user_data);
 }
 
-int axolotl_session_delete_all_sessions(axolotl_store_context *context, const char *name, size_t name_len)
+int signal_protocol_session_delete_all_sessions(signal_protocol_store_context *context, const char *name, size_t name_len)
 {
     assert(context);
     assert(context->session_store.delete_all_sessions_func);
@@ -698,10 +729,10 @@ int axolotl_session_delete_all_sessions(axolotl_store_context *context, const ch
 
 /*------------------------------------------------------------------------*/
 
-int axolotl_pre_key_load_key(axolotl_store_context *context, session_pre_key **pre_key, uint32_t pre_key_id)
+int signal_protocol_pre_key_load_key(signal_protocol_store_context *context, session_pre_key **pre_key, uint32_t pre_key_id)
 {
     int result = 0;
-    axolotl_buffer *buffer = 0;
+    signal_buffer *buffer = 0;
     session_pre_key *result_key = 0;
 
     assert(context);
@@ -715,11 +746,11 @@ int axolotl_pre_key_load_key(axolotl_store_context *context, session_pre_key **p
     }
 
     result = session_pre_key_deserialize(&result_key,
-            axolotl_buffer_data(buffer), axolotl_buffer_len(buffer), context->global_context);
+            signal_buffer_data(buffer), signal_buffer_len(buffer), context->global_context);
 
 complete:
     if(buffer) {
-        axolotl_buffer_free(buffer);
+        signal_buffer_free(buffer);
     }
     if(result >= 0) {
         *pre_key = result_key;
@@ -727,10 +758,10 @@ complete:
     return result;
 }
 
-int axolotl_pre_key_store_key(axolotl_store_context *context, session_pre_key *pre_key)
+int signal_protocol_pre_key_store_key(signal_protocol_store_context *context, session_pre_key *pre_key)
 {
     int result = 0;
-    axolotl_buffer *buffer = 0;
+    signal_buffer *buffer = 0;
     uint32_t id = 0;
 
     assert(context);
@@ -746,18 +777,18 @@ int axolotl_pre_key_store_key(axolotl_store_context *context, session_pre_key *p
 
     result = context->pre_key_store.store_pre_key(
             id,
-            axolotl_buffer_data(buffer), axolotl_buffer_len(buffer),
+            signal_buffer_data(buffer), signal_buffer_len(buffer),
             context->pre_key_store.user_data);
 
 complete:
     if(buffer) {
-        axolotl_buffer_free(buffer);
+        signal_buffer_free(buffer);
     }
 
     return result;
 }
 
-int axolotl_pre_key_contains_key(axolotl_store_context *context, uint32_t pre_key_id)
+int signal_protocol_pre_key_contains_key(signal_protocol_store_context *context, uint32_t pre_key_id)
 {
     int result = 0;
 
@@ -770,7 +801,7 @@ int axolotl_pre_key_contains_key(axolotl_store_context *context, uint32_t pre_ke
     return result;
 }
 
-int axolotl_pre_key_remove_key(axolotl_store_context *context, uint32_t pre_key_id)
+int signal_protocol_pre_key_remove_key(signal_protocol_store_context *context, uint32_t pre_key_id)
 {
     int result = 0;
 
@@ -785,10 +816,10 @@ int axolotl_pre_key_remove_key(axolotl_store_context *context, uint32_t pre_key_
 
 /*------------------------------------------------------------------------*/
 
-int axolotl_signed_pre_key_load_key(axolotl_store_context *context, session_signed_pre_key **pre_key, uint32_t signed_pre_key_id)
+int signal_protocol_signed_pre_key_load_key(signal_protocol_store_context *context, session_signed_pre_key **pre_key, uint32_t signed_pre_key_id)
 {
     int result = 0;
-    axolotl_buffer *buffer = 0;
+    signal_buffer *buffer = 0;
     session_signed_pre_key *result_key = 0;
 
     assert(context);
@@ -802,11 +833,11 @@ int axolotl_signed_pre_key_load_key(axolotl_store_context *context, session_sign
     }
 
     result = session_signed_pre_key_deserialize(&result_key,
-            axolotl_buffer_data(buffer), axolotl_buffer_len(buffer), context->global_context);
+            signal_buffer_data(buffer), signal_buffer_len(buffer), context->global_context);
 
 complete:
     if(buffer) {
-        axolotl_buffer_free(buffer);
+        signal_buffer_free(buffer);
     }
     if(result >= 0) {
         *pre_key = result_key;
@@ -814,10 +845,10 @@ complete:
     return result;
 }
 
-int axolotl_signed_pre_key_store_key(axolotl_store_context *context, session_signed_pre_key *pre_key)
+int signal_protocol_signed_pre_key_store_key(signal_protocol_store_context *context, session_signed_pre_key *pre_key)
 {
     int result = 0;
-    axolotl_buffer *buffer = 0;
+    signal_buffer *buffer = 0;
     uint32_t id = 0;
 
     assert(context);
@@ -833,18 +864,18 @@ int axolotl_signed_pre_key_store_key(axolotl_store_context *context, session_sig
 
     result = context->signed_pre_key_store.store_signed_pre_key(
             id,
-            axolotl_buffer_data(buffer), axolotl_buffer_len(buffer),
+            signal_buffer_data(buffer), signal_buffer_len(buffer),
             context->signed_pre_key_store.user_data);
 
 complete:
     if(buffer) {
-        axolotl_buffer_free(buffer);
+        signal_buffer_free(buffer);
     }
 
     return result;
 }
 
-int axolotl_signed_pre_key_contains_key(axolotl_store_context *context, uint32_t signed_pre_key_id)
+int signal_protocol_signed_pre_key_contains_key(signal_protocol_store_context *context, uint32_t signed_pre_key_id)
 {
     int result = 0;
 
@@ -857,7 +888,7 @@ int axolotl_signed_pre_key_contains_key(axolotl_store_context *context, uint32_t
     return result;
 }
 
-int axolotl_signed_pre_key_remove_key(axolotl_store_context *context, uint32_t signed_pre_key_id)
+int signal_protocol_signed_pre_key_remove_key(signal_protocol_store_context *context, uint32_t signed_pre_key_id)
 {
     int result = 0;
 
@@ -872,11 +903,11 @@ int axolotl_signed_pre_key_remove_key(axolotl_store_context *context, uint32_t s
 
 /*------------------------------------------------------------------------*/
 
-int axolotl_identity_get_key_pair(axolotl_store_context *context, ratchet_identity_key_pair **key_pair)
+int signal_protocol_identity_get_key_pair(signal_protocol_store_context *context, ratchet_identity_key_pair **key_pair)
 {
     int result = 0;
-    axolotl_buffer *public_buf = 0;
-    axolotl_buffer *private_buf = 0;
+    signal_buffer *public_buf = 0;
+    signal_buffer *private_buf = 0;
     ec_public_key *public_key = 0;
     ec_private_key *private_key = 0;
     ratchet_identity_key_pair *result_key = 0;
@@ -908,16 +939,16 @@ int axolotl_identity_get_key_pair(axolotl_store_context *context, ratchet_identi
 
 complete:
     if(public_buf) {
-        axolotl_buffer_free(public_buf);
+        signal_buffer_free(public_buf);
     }
     if(private_buf) {
-        axolotl_buffer_free(private_buf);
+        signal_buffer_free(private_buf);
     }
     if(public_key) {
-        AXOLOTL_UNREF(public_key);
+        SIGNAL_UNREF(public_key);
     }
     if(private_key) {
-        AXOLOTL_UNREF(private_key);
+        SIGNAL_UNREF(private_key);
     }
     if(result >= 0) {
         *key_pair = result_key;
@@ -925,7 +956,7 @@ complete:
     return result;
 }
 
-int axolotl_identity_get_local_registration_id(axolotl_store_context *context, uint32_t *registration_id)
+int signal_protocol_identity_get_local_registration_id(signal_protocol_store_context *context, uint32_t *registration_id)
 {
     int result = 0;
 
@@ -938,10 +969,10 @@ int axolotl_identity_get_local_registration_id(axolotl_store_context *context, u
     return result;
 }
 
-int axolotl_identity_save_identity(axolotl_store_context *context, const char *name, size_t name_len, ec_public_key *identity_key)
+int signal_protocol_identity_save_identity(signal_protocol_store_context *context, const signal_protocol_address *address, ec_public_key *identity_key)
 {
     int result = 0;
-    axolotl_buffer *buffer = 0;
+    signal_buffer *buffer = 0;
 
     assert(context);
     assert(context->identity_key_store.save_identity);
@@ -953,29 +984,29 @@ int axolotl_identity_save_identity(axolotl_store_context *context, const char *n
         }
 
         result = context->identity_key_store.save_identity(
-                name, name_len,
-                axolotl_buffer_data(buffer),
-                axolotl_buffer_len(buffer),
+                address,
+                signal_buffer_data(buffer),
+                signal_buffer_len(buffer),
                 context->identity_key_store.user_data);
     }
     else {
         result = context->identity_key_store.save_identity(
-                name, name_len, 0, 0,
+                address, 0, 0,
                 context->identity_key_store.user_data);
     }
 
 complete:
     if(buffer) {
-        axolotl_buffer_free(buffer);
+        signal_buffer_free(buffer);
     }
 
     return result;
 }
 
-int axolotl_identity_is_trusted_identity(axolotl_store_context *context, const char *name, size_t name_len, ec_public_key *identity_key)
+int signal_protocol_identity_is_trusted_identity(signal_protocol_store_context *context, const signal_protocol_address *address, ec_public_key *identity_key)
 {
     int result = 0;
-    axolotl_buffer *buffer = 0;
+    signal_buffer *buffer = 0;
 
     assert(context);
     assert(context->identity_key_store.is_trusted_identity);
@@ -986,22 +1017,22 @@ int axolotl_identity_is_trusted_identity(axolotl_store_context *context, const c
     }
 
     result = context->identity_key_store.is_trusted_identity(
-            name, name_len,
-            axolotl_buffer_data(buffer),
-            axolotl_buffer_len(buffer),
+            address,
+            signal_buffer_data(buffer),
+            signal_buffer_len(buffer),
             context->identity_key_store.user_data);
 complete:
     if(buffer) {
-        axolotl_buffer_free(buffer);
+        signal_buffer_free(buffer);
     }
 
     return result;
 }
 
-int axolotl_sender_key_store_key(axolotl_store_context *context, const axolotl_sender_key_name *sender_key_name, sender_key_record *record)
+int signal_protocol_sender_key_store_key(signal_protocol_store_context *context, const signal_protocol_sender_key_name *sender_key_name, sender_key_record *record)
 {
     int result = 0;
-    axolotl_buffer *buffer = 0;
+    signal_buffer *buffer = 0;
 
     assert(context);
     assert(context->sender_key_store.store_sender_key);
@@ -1014,21 +1045,21 @@ int axolotl_sender_key_store_key(axolotl_store_context *context, const axolotl_s
 
     result = context->sender_key_store.store_sender_key(
             sender_key_name,
-            axolotl_buffer_data(buffer), axolotl_buffer_len(buffer),
+            signal_buffer_data(buffer), signal_buffer_len(buffer),
             context->sender_key_store.user_data);
 
 complete:
     if(buffer) {
-        axolotl_buffer_free(buffer);
+        signal_buffer_free(buffer);
     }
 
     return result;
 }
 
-int axolotl_sender_key_load_key(axolotl_store_context *context, sender_key_record **record, const axolotl_sender_key_name *sender_key_name)
+int signal_protocol_sender_key_load_key(signal_protocol_store_context *context, sender_key_record **record, const signal_protocol_sender_key_name *sender_key_name)
 {
     int result = 0;
-    axolotl_buffer *buffer = 0;
+    signal_buffer *buffer = 0;
     sender_key_record *result_record = 0;
 
     assert(context);
@@ -1043,7 +1074,7 @@ int axolotl_sender_key_load_key(axolotl_store_context *context, sender_key_recor
 
     if(result == 0) {
         if(buffer) {
-            result = AX_ERR_UNKNOWN;
+            result = SG_ERR_UNKNOWN;
             goto complete;
         }
         result = sender_key_record_create(&result_record, context->global_context);
@@ -1054,15 +1085,15 @@ int axolotl_sender_key_load_key(axolotl_store_context *context, sender_key_recor
             goto complete;
         }
         result = sender_key_record_deserialize(&result_record,
-                axolotl_buffer_data(buffer), axolotl_buffer_len(buffer), context->global_context);
+                signal_buffer_data(buffer), signal_buffer_len(buffer), context->global_context);
     }
     else {
-        result = AX_ERR_UNKNOWN;
+        result = SG_ERR_UNKNOWN;
     }
 
 complete:
     if(buffer) {
-        axolotl_buffer_free(buffer);
+        signal_buffer_free(buffer);
     }
     if(result >= 0) {
         *record = result_record;
diff --git a/libs/libaxolotl/src/axolotl.h b/libs/libaxolotl/src/signal_protocol.h
index 7fe03691d2..3b78a74be7 100644
--- a/libs/libaxolotl/src/axolotl.h
+++ b/libs/libaxolotl/src/signal_protocol.h
@@ -1,42 +1,43 @@
-#ifndef AXOLOTL_H
-#define AXOLOTL_H
+#ifndef SIGNAL_PROTOCOL_H
+#define SIGNAL_PROTOCOL_H
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>
 
-#include "axolotl_types.h"
 #include "ratchet.h"
 #include "curve.h"
 #include "session_record.h"
 #include "session_pre_key.h"
 #include "sender_key_record.h"
+#include "signal_protocol_types.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#define AX_SUCCESS 0
+#define SG_SUCCESS 0
 
 /* Standard error codes with values that match errno.h equivalents */
-#define AX_ERR_NOMEM -12   /* Not enough space */
-#define AX_ERR_INVAL -22   /* Invalid argument */
+#define SG_ERR_NOMEM -12   /* Not enough space */
+#define SG_ERR_INVAL -22   /* Invalid argument */
 
 /* Custom error codes for error conditions specific to the library */
-#define AX_ERR_UNKNOWN              -1000
-#define AX_ERR_DUPLICATE_MESSAGE    -1001
-#define AX_ERR_INVALID_KEY          -1002
-#define AX_ERR_INVALID_KEY_ID       -1003
-#define AX_ERR_INVALID_MAC          -1004
-#define AX_ERR_INVALID_MESSAGE      -1005
-#define AX_ERR_INVALID_VERSION      -1006
-#define AX_ERR_LEGACY_MESSAGE       -1007
-#define AX_ERR_NO_SESSION           -1008
-#define AX_ERR_STALE_KEY_EXCHANGE   -1009
-#define AX_ERR_UNTRUSTED_IDENTITY   -1010
-#define AX_ERR_INVALID_PROTO_BUF    -1100
-#define AX_ERR_FP_VERSION_MISMATCH  -1200
-#define AX_ERR_FP_IDENT_MISMATCH    -1201
+#define SG_ERR_UNKNOWN              -1000
+#define SG_ERR_DUPLICATE_MESSAGE    -1001
+#define SG_ERR_INVALID_KEY          -1002
+#define SG_ERR_INVALID_KEY_ID       -1003
+#define SG_ERR_INVALID_MAC          -1004
+#define SG_ERR_INVALID_MESSAGE      -1005
+#define SG_ERR_INVALID_VERSION      -1006
+#define SG_ERR_LEGACY_MESSAGE       -1007
+#define SG_ERR_NO_SESSION           -1008
+#define SG_ERR_STALE_KEY_EXCHANGE   -1009
+#define SG_ERR_UNTRUSTED_IDENTITY   -1010
+#define SG_ERR_VRF_SIG_VERIF_FAILED -1011
+#define SG_ERR_INVALID_PROTO_BUF    -1100
+#define SG_ERR_FP_VERSION_MISMATCH  -1200
+#define SG_ERR_FP_IDENT_MISMATCH    -1201
 
 /*
  * Minimum negative error code value that this library may use.
@@ -44,36 +45,36 @@ extern "C" {
  * less than this constant will ensure that application-specific
  * errors can be distinguished from library errors.
  */
-#define AX_ERR_MINIMUM              -9999
+#define SG_ERR_MINIMUM              -9999
 
 /* Log levels */
-#define AX_LOG_ERROR   0
-#define AX_LOG_WARNING 1
-#define AX_LOG_NOTICE  2
-#define AX_LOG_INFO    3
-#define AX_LOG_DEBUG   4
+#define SG_LOG_ERROR   0
+#define SG_LOG_WARNING 1
+#define SG_LOG_NOTICE  2
+#define SG_LOG_INFO    3
+#define SG_LOG_DEBUG   4
 
 /* Mode settings for the crypto callbacks */
-#define AX_CIPHER_AES_CTR_NOPADDING 1
-#define AX_CIPHER_AES_CBC_PKCS5     2
+#define SG_CIPHER_AES_CTR_NOPADDING 1
+#define SG_CIPHER_AES_CBC_PKCS5     2
 
-void axolotl_type_ref(axolotl_type_base *instance);
-void axolotl_type_unref(axolotl_type_base *instance);
+void signal_type_ref(signal_type_base *instance);
+void signal_type_unref(signal_type_base *instance);
 
 #ifdef DEBUG_REFCOUNT
-int axolotl_type_ref_count(axolotl_type_base *instance);
-#define AXOLOTL_REF(instance) do { \
-    axolotl_type_ref((axolotl_type_base *)instance); \
-    fprintf(stderr, "REF: " #instance " = %d\n", axolotl_type_ref_count((axolotl_type_base *)instance)); \
+int signal_type_ref_count(signal_type_base *instance);
+#define SIGNAL_REF(instance) do { \
+    signal_type_ref((signal_type_base *)instance); \
+    fprintf(stderr, "REF: " #instance " = %d\n", signal_type_ref_count((signal_type_base *)instance)); \
     } while (0)
-#define AXOLOTL_UNREF(instance) do { \
-    fprintf(stderr, "UNREF: " #instance " = %d\n", axolotl_type_ref_count((axolotl_type_base *)instance)); \
-    axolotl_type_unref((axolotl_type_base *)instance); \
+#define SIGNAL_UNREF(instance) do { \
+    fprintf(stderr, "UNREF: " #instance " = %d\n", signal_type_ref_count((signal_type_base *)instance)); \
+    signal_type_unref((signal_type_base *)instance); \
     instance = 0; \
     } while(0)
 #else
-#define AXOLOTL_REF(instance) axolotl_type_ref((axolotl_type_base *)instance)
-#define AXOLOTL_UNREF(instance) do { axolotl_type_unref((axolotl_type_base *)instance); instance = 0; } while(0)
+#define SIGNAL_REF(instance) signal_type_ref((signal_type_base *)instance)
+#define SIGNAL_UNREF(instance) do { signal_type_unref((signal_type_base *)instance); instance = 0; } while(0)
 #endif
 
 /**
@@ -82,7 +83,7 @@ int axolotl_type_ref_count(axolotl_type_base *instance);
  * @param len length of the buffer to allocate
  * @return pointer to the allocated buffer, or 0 on failure
  */
-axolotl_buffer *axolotl_buffer_alloc(size_t len);
+signal_buffer *signal_buffer_alloc(size_t len);
 
 /**
  * Create a new buffer and copy the provided data into it.
@@ -91,7 +92,7 @@ axolotl_buffer *axolotl_buffer_alloc(size_t len);
  * @param len length of the data
  * @return pointer to the allocated buffer, or 0 on failure
  */
-axolotl_buffer *axolotl_buffer_create(const uint8_t *data, size_t len);
+signal_buffer *signal_buffer_create(const uint8_t *data, size_t len);
 
 /**
  * Create a copy of an existing buffer.
@@ -99,7 +100,7 @@ axolotl_buffer *axolotl_buffer_create(const uint8_t *data, size_t len);
  * @param buffer the existing buffer to copy
  * @return pointer to the updated buffer, or 0 on failure
  */
-axolotl_buffer *axolotl_buffer_copy(const axolotl_buffer *buffer);
+signal_buffer *signal_buffer_copy(const signal_buffer *buffer);
 
 /**
  * Append the provided data to an existing buffer.
@@ -112,7 +113,7 @@ axolotl_buffer *axolotl_buffer_copy(const axolotl_buffer *buffer);
  * @param len length of the data
  * @return pointer to the updated buffer, or 0 on failure
  */
-axolotl_buffer *axolotl_buffer_append(axolotl_buffer *buffer, const uint8_t *data, size_t len);
+signal_buffer *signal_buffer_append(signal_buffer *buffer, const uint8_t *data, size_t len);
 
 /**
  * Gets the data pointer for the buffer.
@@ -121,7 +122,7 @@ axolotl_buffer *axolotl_buffer_append(axolotl_buffer *buffer, const uint8_t *dat
  * @param buffer pointer to the buffer instance
  * @return data pointer
  */
-uint8_t *axolotl_buffer_data(axolotl_buffer *buffer);
+uint8_t *signal_buffer_data(signal_buffer *buffer);
 
 /**
  * Gets the length of the data stored within the buffer.
@@ -129,7 +130,7 @@ uint8_t *axolotl_buffer_data(axolotl_buffer *buffer);
  * @param buffer pointer to the buffer instance
  * @return data length
  */
-size_t axolotl_buffer_len(axolotl_buffer *buffer);
+size_t signal_buffer_len(signal_buffer *buffer);
 
 /**
  * Compare two buffers.
@@ -138,14 +139,14 @@ size_t axolotl_buffer_len(axolotl_buffer *buffer);
  * @param buffer2 second buffer to compare
  * @return 0 if the two buffers are equal, negative or positive otherwise
  */
-int axolotl_buffer_compare(axolotl_buffer *buffer1, axolotl_buffer *buffer2);
+int signal_buffer_compare(signal_buffer *buffer1, signal_buffer *buffer2);
 
 /**
  * Free the data buffer.
  *
  * @param buffer pointer to the buffer instance to free
  */
-void axolotl_buffer_free(axolotl_buffer *buffer);
+void signal_buffer_free(signal_buffer *buffer);
 
 /**
  * Zero and free the data buffer.
@@ -154,14 +155,14 @@ void axolotl_buffer_free(axolotl_buffer *buffer);
  *
  * @param buffer pointer to the buffer instance to free
  */
-void axolotl_buffer_bzero_free(axolotl_buffer *buffer);
+void signal_buffer_bzero_free(signal_buffer *buffer);
 
 /**
  * Allocate a new buffer list.
  *
  * @return pointer to the allocated buffer, or 0 on failure
  */
-axolotl_buffer_list *axolotl_buffer_list_alloc();
+signal_buffer_list *signal_buffer_list_alloc(void);
 
 /**
  * Push the provided buffer onto the head of the list.
@@ -170,7 +171,7 @@ axolotl_buffer_list *axolotl_buffer_list_alloc();
  * @param buffer the buffer to push
  * @return 0 on success, or negative on failure
  */
-int axolotl_buffer_list_push(axolotl_buffer_list *list, axolotl_buffer *buffer);
+int signal_buffer_list_push(signal_buffer_list *list, signal_buffer *buffer);
 
 /**
  * Gets the size of the buffer list.
@@ -178,21 +179,21 @@ int axolotl_buffer_list_push(axolotl_buffer_list *list, axolotl_buffer *buffer);
  * @param list the buffer list
  * @return the size of the list
  */
-int axolotl_buffer_list_size(axolotl_buffer_list *list);
+int signal_buffer_list_size(signal_buffer_list *list);
 
 /**
  * Free the buffer list, including all the buffers added to it.
  *
  * @param list the buffer list
  */
-void axolotl_buffer_list_free(axolotl_buffer_list *list);
+void signal_buffer_list_free(signal_buffer_list *list);
 
 /**
  * Allocate a new int list
  *
  * @return pointer to the allocated buffer, or 0 on failure
  */
-axolotl_int_list *axolotl_int_list_alloc();
+signal_int_list *signal_int_list_alloc(void);
 
 /**
  * Push a new value onto the end of the list
@@ -200,7 +201,7 @@ axolotl_int_list *axolotl_int_list_alloc();
  * @param list the list
  * @param value the value to push
  */
-void axolotl_int_list_push_back(axolotl_int_list *list, int value);
+void signal_int_list_push_back(signal_int_list *list, int value);
 
 /**
  * Gets the size of the list.
@@ -208,7 +209,7 @@ void axolotl_int_list_push_back(axolotl_int_list *list, int value);
  * @param list the list
  * @return the size of the list
  */
-unsigned int axolotl_int_list_size(axolotl_int_list *list);
+unsigned int signal_int_list_size(signal_int_list *list);
 
 /**
  * Gets the value of the element at a particular index in the list
@@ -217,15 +218,15 @@ unsigned int axolotl_int_list_size(axolotl_int_list *list);
  * @param index the index within the list
  * @return the value
  */
-int axolotl_int_list_at(axolotl_int_list *list, unsigned int index);
+int signal_int_list_at(signal_int_list *list, unsigned int index);
 
 /**
  * Free the int list
  * @param list the list to free
  */
-void axolotl_int_list_free(axolotl_int_list *list);
+void signal_int_list_free(signal_int_list *list);
 
-typedef struct axolotl_crypto_provider {
+typedef struct signal_crypto_provider {
     /**
      * Callback for a secure random number generator.
      * This function shall fill the provided buffer with random bytes.
@@ -267,7 +268,7 @@ typedef struct axolotl_crypto_provider {
      * @param output buffer to be allocated and populated with the result
      * @return 0 on success, negative on failure
      */
-    int (*hmac_sha256_final_func)(void *hmac_context, axolotl_buffer **output, void *user_data);
+    int (*hmac_sha256_final_func)(void *hmac_context, signal_buffer **output, void *user_data);
 
     /**
      * Callback for an HMAC-SHA256 implementation.
@@ -280,20 +281,49 @@ typedef struct axolotl_crypto_provider {
 
     /**
      * Callback for a SHA512 message digest implementation.
-     * This function is currently only used by the fingerprint generator.
+     * This function shall initialize a digest context.
      *
-     * @param output buffer to be allocated and populated with the ciphertext
+     * @param digest_context private digest context pointer
+     * @return 0 on success, negative on failure
+     */
+    int (*sha512_digest_init_func)(void **digest_context, void *user_data);
+
+    /**
+     * Callback for a SHA512 message digest implementation.
+     * This function shall update the digest context with the provided data.
+     *
+     * @param digest_context private digest context pointer
      * @param data pointer to the data
      * @param data_len length of the data
      * @return 0 on success, negative on failure
      */
-    int (*sha512_digest_func)(axolotl_buffer **output, const uint8_t *data, size_t data_len, void *user_data);
+    int (*sha512_digest_update_func)(void *digest_context, const uint8_t *data, size_t data_len, void *user_data);
+
+    /**
+     * Callback for a SHA512 message digest implementation.
+     * This function shall finalize the digest calculation, populate the
+     * output buffer with the result, and prepare the context for reuse.
+     *
+     * @param digest_context private digest context pointer
+     * @param output buffer to be allocated and populated with the result
+     * @return 0 on success, negative on failure
+     */
+    int (*sha512_digest_final_func)(void *digest_context, signal_buffer **output, void *user_data);
+
+    /**
+     * Callback for a SHA512 message digest implementation.
+     * This function shall free the private context allocated in
+     * sha512_digest_init_func.
+     *
+     * @param digest_context private digest context pointer
+     */
+    void (*sha512_digest_cleanup_func)(void *digest_context, void *user_data);
 
     /**
      * Callback for an AES encryption implementation.
      *
      * @param output buffer to be allocated and populated with the ciphertext
-     * @param cipher specific cipher variant to use, either AX_CIPHER_AES_CTR_NOPADDING or AX_CIPHER_AES_CBC_PKCS5
+     * @param cipher specific cipher variant to use, either SG_CIPHER_AES_CTR_NOPADDING or SG_CIPHER_AES_CBC_PKCS5
      * @param key the encryption key
      * @param key_len length of the encryption key
      * @param iv the initialization vector
@@ -302,7 +332,7 @@ typedef struct axolotl_crypto_provider {
      * @param plaintext_len length of the plaintext
      * @return 0 on success, negative on failure
      */
-    int (*encrypt_func)(axolotl_buffer **output,
+    int (*encrypt_func)(signal_buffer **output,
             int cipher,
             const uint8_t *key, size_t key_len,
             const uint8_t *iv, size_t iv_len,
@@ -313,7 +343,7 @@ typedef struct axolotl_crypto_provider {
      * Callback for an AES decryption implementation.
      *
      * @param output buffer to be allocated and populated with the plaintext
-     * @param cipher specific cipher variant to use, either AX_CIPHER_AES_CTR_NOPADDING or AX_CIPHER_AES_CBC_PKCS5
+     * @param cipher specific cipher variant to use, either SG_CIPHER_AES_CTR_NOPADDING or SG_CIPHER_AES_CBC_PKCS5
      * @param key the encryption key
      * @param key_len length of the encryption key
      * @param iv the initialization vector
@@ -322,7 +352,7 @@ typedef struct axolotl_crypto_provider {
      * @param ciphertext_len length of the ciphertext
      * @return 0 on success, negative on failure
      */
-    int (*decrypt_func)(axolotl_buffer **output,
+    int (*decrypt_func)(signal_buffer **output,
             int cipher,
             const uint8_t *key, size_t key_len,
             const uint8_t *iv, size_t iv_len,
@@ -331,20 +361,20 @@ typedef struct axolotl_crypto_provider {
 
     /** User data pointer */
     void *user_data;
-} axolotl_crypto_provider;
+} signal_crypto_provider;
 
-typedef struct axolotl_session_store {
+typedef struct signal_protocol_session_store {
     /**
      * Returns a copy of the serialized session record corresponding to the
      * provided recipient ID + device ID tuple.
      *
      * @param record pointer to a freshly allocated buffer containing the
      *     serialized session record. Unset if no record was found.
-     *     The axolotl library is responsible for freeing this buffer.
+     *     The Signal Protocol library is responsible for freeing this buffer.
      * @param address the address of the remote client
      * @return 1 if the session was loaded, 0 if the session was not found, negative on failure
      */
-    int (*load_session_func)(axolotl_buffer **record, const axolotl_address *address, void *user_data);
+    int (*load_session_func)(signal_buffer **record, const signal_protocol_address *address, void *user_data);
 
     /**
      * Returns all known devices with active sessions for a recipient
@@ -354,7 +384,7 @@ typedef struct axolotl_session_store {
      * @param name_len the length of the name
      * @return size of the sessions array, or negative on failure
      */
-    int (*get_sub_device_sessions_func)(axolotl_int_list **sessions, const char *name, size_t name_len, void *user_data);
+    int (*get_sub_device_sessions_func)(signal_int_list **sessions, const char *name, size_t name_len, void *user_data);
 
     /**
      * Commit to storage the session record for a given
@@ -366,7 +396,7 @@ typedef struct axolotl_session_store {
      * @param record_len length of the serialized session record
      * @return 0 on success, negative on failure
      */
-    int (*store_session_func)(const axolotl_address *address, uint8_t *record, size_t record_len, void *user_data);
+    int (*store_session_func)(const signal_protocol_address *address, uint8_t *record, size_t record_len, void *user_data);
 
     /**
      * Determine whether there is a committed session record for a
@@ -375,7 +405,7 @@ typedef struct axolotl_session_store {
      * @param address the address of the remote client
      * @return 1 if a session record exists, 0 otherwise.
      */
-    int (*contains_session_func)(const axolotl_address *address, void *user_data);
+    int (*contains_session_func)(const signal_protocol_address *address, void *user_data);
 
     /**
      * Remove a session record for a recipient ID + device ID tuple.
@@ -383,7 +413,7 @@ typedef struct axolotl_session_store {
      * @param address the address of the remote client
      * @return 1 if a session was deleted, 0 if a session was not deleted, negative on error
      */
-    int (*delete_session_func)(const axolotl_address *address, void *user_data);
+    int (*delete_session_func)(const signal_protocol_address *address, void *user_data);
 
     /**
      * Remove the session records corresponding to all devices of a recipient ID.
@@ -402,20 +432,20 @@ typedef struct axolotl_session_store {
 
     /** User data pointer */
     void *user_data;
-} axolotl_session_store;
+} signal_protocol_session_store;
 
-typedef struct axolotl_pre_key_store {
+typedef struct signal_protocol_pre_key_store {
     /**
      * Load a local serialized PreKey record.
      *
      * @param record pointer to a newly allocated buffer containing the record,
      *     if found. Unset if no record was found.
-     *     The axolotl library is responsible for freeing this buffer.
+     *     The Signal Protocol library is responsible for freeing this buffer.
      * @param pre_key_id the ID of the local serialized PreKey record
-     * @retval AX_SUCCESS if the key was found
-     * @retval AX_ERR_INVALID_KEY_ID if the key could not be found
+     * @retval SG_SUCCESS if the key was found
+     * @retval SG_ERR_INVALID_KEY_ID if the key could not be found
      */
-    int (*load_pre_key)(axolotl_buffer **record, uint32_t pre_key_id, void *user_data);
+    int (*load_pre_key)(signal_buffer **record, uint32_t pre_key_id, void *user_data);
 
     /**
      * Store a local serialized PreKey record.
@@ -452,20 +482,20 @@ typedef struct axolotl_pre_key_store {
 
     /** User data pointer */
     void *user_data;
-} axolotl_pre_key_store;
+} signal_protocol_pre_key_store;
 
-typedef struct axolotl_signed_pre_key_store {
+typedef struct signal_protocol_signed_pre_key_store {
     /**
      * Load a local serialized signed PreKey record.
      *
      * @param record pointer to a newly allocated buffer containing the record,
      *     if found. Unset if no record was found.
-     *     The axolotl library is responsible for freeing this buffer.
+     *     The Signal Protocol library is responsible for freeing this buffer.
      * @param signed_pre_key_id the ID of the local signed PreKey record
-     * @retval AX_SUCCESS if the key was found
-     * @retval AX_ERR_INVALID_KEY_ID if the key could not be found
+     * @retval SG_SUCCESS if the key was found
+     * @retval SG_ERR_INVALID_KEY_ID if the key could not be found
      */
-    int (*load_signed_pre_key)(axolotl_buffer **record, uint32_t signed_pre_key_id, void *user_data);
+    int (*load_signed_pre_key)(signal_buffer **record, uint32_t signed_pre_key_id, void *user_data);
 
     /**
      * Store a local serialized signed PreKey record.
@@ -502,21 +532,21 @@ typedef struct axolotl_signed_pre_key_store {
 
     /** User data pointer */
     void *user_data;
-} axolotl_signed_pre_key_store;
+} signal_protocol_signed_pre_key_store;
 
-typedef struct axolotl_identity_key_store {
+typedef struct signal_protocol_identity_key_store {
     /**
      * Get the local client's identity key pair.
      *
      * @param public_data pointer to a newly allocated buffer containing the
      *     public key, if found. Unset if no record was found.
-     *     The axolotl library is responsible for freeing this buffer.
+     *     The Signal Protocol library is responsible for freeing this buffer.
      * @param private_data pointer to a newly allocated buffer containing the
      *     private key, if found. Unset if no record was found.
-     *     The axolotl library is responsible for freeing this buffer.
+     *     The Signal Protocol library is responsible for freeing this buffer.
      * @return 0 on success, negative on failure
      */
-    int (*get_identity_key_pair)(axolotl_buffer **public_data, axolotl_buffer **private_data, void *user_data);
+    int (*get_identity_key_pair)(signal_buffer **public_data, signal_buffer **private_data, void *user_data);
 
     /**
      * Return the local client's registration ID.
@@ -538,13 +568,12 @@ typedef struct axolotl_identity_key_store {
      * from the identity store, but retain any metadata that may be kept
      * alongside it.
      *
-     * @param name the name of the remote client
-     * @param name_len the length of the name
+     * @param address the address of the remote client
      * @param key_data Pointer to the remote client's identity key, may be null
      * @param key_len Length of the remote client's identity key
      * @return 0 on success, negative on failure
      */
-    int (*save_identity)(const char *name, size_t name_len, uint8_t *key_data, size_t key_len, void *user_data);
+    int (*save_identity)(const signal_protocol_address *address, uint8_t *key_data, size_t key_len, void *user_data);
 
     /**
      * Verify a remote client's identity key.
@@ -556,14 +585,13 @@ typedef struct axolotl_identity_key_store {
      * store.  Only if it mismatches an entry in the local store is it considered
      * 'untrusted.'
      *
-     * @param name the name of the remote client
-     * @param name_len the length of the name
+     * @param address the address of the remote client
      * @param identityKey The identity key to verify.
      * @param key_data Pointer to the identity key to verify
      * @param key_len Length of the identity key to verify
      * @return 1 if trusted, 0 if untrusted, negative on failure
      */
-    int (*is_trusted_identity)(const char *name, size_t name_len, uint8_t *key_data, size_t key_len, void *user_data);
+    int (*is_trusted_identity)(const signal_protocol_address *address, uint8_t *key_data, size_t key_len, void *user_data);
 
     /**
      * Function called to perform cleanup when the data store context is being
@@ -573,9 +601,9 @@ typedef struct axolotl_identity_key_store {
 
     /** User data pointer */
     void *user_data;
-} axolotl_identity_key_store;
+} signal_protocol_identity_key_store;
 
-typedef struct axolotl_sender_key_store {
+typedef struct signal_protocol_sender_key_store {
     /**
      * Store a serialized sender key record for a given
      * (groupId + senderId + deviceId) tuple.
@@ -585,7 +613,7 @@ typedef struct axolotl_sender_key_store {
      * @param record_len length of the serialized record
      * @return 0 on success, negative on failure
      */
-    int (*store_sender_key)(const axolotl_sender_key_name *sender_key_name, uint8_t *record, size_t record_len, void *user_data);
+    int (*store_sender_key)(const signal_protocol_sender_key_name *sender_key_name, uint8_t *record, size_t record_len, void *user_data);
 
     /**
      * Returns a copy of the sender key record corresponding to the
@@ -593,11 +621,11 @@ typedef struct axolotl_sender_key_store {
      *
      * @param record pointer to a newly allocated buffer containing the record,
      *     if found. Unset if no record was found.
-     *     The axolotl library is responsible for freeing this buffer.
+     *     The Signal Protocol library is responsible for freeing this buffer.
      * @param sender_key_name the (groupId + senderId + deviceId) tuple
      * @return 1 if the record was loaded, 0 if the record was not found, negative on failure
      */
-    int (*load_sender_key)(axolotl_buffer **record, const axolotl_sender_key_name *sender_key_name, void *user_data);
+    int (*load_sender_key)(signal_buffer **record, const signal_protocol_sender_key_name *sender_key_name, void *user_data);
 
     /**
      * Function called to perform cleanup when the data store context is being
@@ -607,25 +635,25 @@ typedef struct axolotl_sender_key_store {
 
     /** User data pointer */
     void *user_data;
-} axolotl_sender_key_store;
+} signal_protocol_sender_key_store;
 
 /**
  * Create a new instance of the global library context.
  */
-int axolotl_context_create(axolotl_context **context, void *user_data);
+int signal_context_create(signal_context **context, void *user_data);
 
 /**
- * Set the crypto provider to be used by the AXOLOTL library.
+ * Set the crypto provider to be used by the Signal Protocol library.
  *
  * @param crypto_provider Populated structure of crypto provider function
  *     pointers. The contents of this structure are copied, so the caller
  *     does not need to maintain its instance.
  * @return 0 on success, negative on failure
  */
-int axolotl_context_set_crypto_provider(axolotl_context *context, const axolotl_crypto_provider *crypto_provider);
+int signal_context_set_crypto_provider(signal_context *context, const signal_crypto_provider *crypto_provider);
 
 /**
- * Set the locking functions to be used by the AXOLOTL library for
+ * Set the locking functions to be used by the Signal Protocol library for
  * synchronization.
  *
  * Note: These functions must allow recursive locking (e.g. PTHREAD_MUTEX_RECURSIVE)
@@ -634,98 +662,98 @@ int axolotl_context_set_crypto_provider(axolotl_context *context, const axolotl_
  * @param unlock function to unlock a mutex
  * @return 0 on success, negative on failure
  */
-int axolotl_context_set_locking_functions(axolotl_context *context,
+int signal_context_set_locking_functions(signal_context *context,
         void (*lock)(void *user_data), void (*unlock)(void *user_data));
 
 /**
- * Set the log function to be used by the AXOLOTL library for logging.
+ * Set the log function to be used by the Signal Protocol library for logging.
  *
  * @return 0 on success, negative on failure
  */
-int axolotl_context_set_log_function(axolotl_context *context,
+int signal_context_set_log_function(signal_context *context,
         void (*log)(int level, const char *message, size_t len, void *user_data));
 
-void axolotl_context_destroy(axolotl_context *context);
+void signal_context_destroy(signal_context *context);
 
 /**
- * Create a new instance of the AXOLOTL data store interface.
+ * Create a new instance of the Signal Protocol data store interface.
  */
-int axolotl_store_context_create(axolotl_store_context **context, axolotl_context *global_context);
+int signal_protocol_store_context_create(signal_protocol_store_context **context, signal_context *global_context);
 
-int axolotl_store_context_set_session_store(axolotl_store_context *context, const axolotl_session_store *store);
-int axolotl_store_context_set_pre_key_store(axolotl_store_context *context, const axolotl_pre_key_store *store);
-int axolotl_store_context_set_signed_pre_key_store(axolotl_store_context *context, const axolotl_signed_pre_key_store *store);
-int axolotl_store_context_set_identity_key_store(axolotl_store_context *context, const axolotl_identity_key_store *store);
-int axolotl_store_context_set_sender_key_store(axolotl_store_context *context, const axolotl_sender_key_store *store);
+int signal_protocol_store_context_set_session_store(signal_protocol_store_context *context, const signal_protocol_session_store *store);
+int signal_protocol_store_context_set_pre_key_store(signal_protocol_store_context *context, const signal_protocol_pre_key_store *store);
+int signal_protocol_store_context_set_signed_pre_key_store(signal_protocol_store_context *context, const signal_protocol_signed_pre_key_store *store);
+int signal_protocol_store_context_set_identity_key_store(signal_protocol_store_context *context, const signal_protocol_identity_key_store *store);
+int signal_protocol_store_context_set_sender_key_store(signal_protocol_store_context *context, const signal_protocol_sender_key_store *store);
 
-void axolotl_store_context_destroy(axolotl_store_context *context);
+void signal_protocol_store_context_destroy(signal_protocol_store_context *context);
 
 /*
  * Interface to the session store.
  * These functions will use the callbacks in the provided
- * axolotl_store_context instance and operate in terms of higher level
+ * signal_protocol_store_context instance and operate in terms of higher level
  * library data structures.
  */
 
-int axolotl_session_load_session(axolotl_store_context *context, session_record **record, const axolotl_address *address);
-int axolotl_session_get_sub_device_sessions(axolotl_store_context *context, axolotl_int_list **sessions, const char *name, size_t name_len);
-int axolotl_session_store_session(axolotl_store_context *context, const axolotl_address *address, session_record *record);
-int axolotl_session_contains_session(axolotl_store_context *context, const axolotl_address *address);
-int axolotl_session_delete_session(axolotl_store_context *context, const axolotl_address *address);
-int axolotl_session_delete_all_sessions(axolotl_store_context *context, const char *name, size_t name_len);
+int signal_protocol_session_load_session(signal_protocol_store_context *context, session_record **record, const signal_protocol_address *address);
+int signal_protocol_session_get_sub_device_sessions(signal_protocol_store_context *context, signal_int_list **sessions, const char *name, size_t name_len);
+int signal_protocol_session_store_session(signal_protocol_store_context *context, const signal_protocol_address *address, session_record *record);
+int signal_protocol_session_contains_session(signal_protocol_store_context *context, const signal_protocol_address *address);
+int signal_protocol_session_delete_session(signal_protocol_store_context *context, const signal_protocol_address *address);
+int signal_protocol_session_delete_all_sessions(signal_protocol_store_context *context, const char *name, size_t name_len);
 
 
 /*
  * Interface to the pre-key store.
  * These functions will use the callbacks in the provided
- * axolotl_store_context instance and operate in terms of higher level
+ * signal_protocol_store_context instance and operate in terms of higher level
  * library data structures.
  */
 
-int axolotl_pre_key_load_key(axolotl_store_context *context, session_pre_key **pre_key, uint32_t pre_key_id);
-int axolotl_pre_key_store_key(axolotl_store_context *context, session_pre_key *pre_key);
-int axolotl_pre_key_contains_key(axolotl_store_context *context, uint32_t pre_key_id);
-int axolotl_pre_key_remove_key(axolotl_store_context *context, uint32_t pre_key_id);
+int signal_protocol_pre_key_load_key(signal_protocol_store_context *context, session_pre_key **pre_key, uint32_t pre_key_id);
+int signal_protocol_pre_key_store_key(signal_protocol_store_context *context, session_pre_key *pre_key);
+int signal_protocol_pre_key_contains_key(signal_protocol_store_context *context, uint32_t pre_key_id);
+int signal_protocol_pre_key_remove_key(signal_protocol_store_context *context, uint32_t pre_key_id);
 
 
 /*
  * Interface to the signed pre-key store.
  * These functions will use the callbacks in the provided
- * axolotl_store_context instance and operate in terms of higher level
+ * signal_protocol_store_context instance and operate in terms of higher level
  * library data structures.
  */
 
-int axolotl_signed_pre_key_load_key(axolotl_store_context *context, session_signed_pre_key **pre_key, uint32_t signed_pre_key_id);
-int axolotl_signed_pre_key_store_key(axolotl_store_context *context, session_signed_pre_key *pre_key);
-int axolotl_signed_pre_key_contains_key(axolotl_store_context *context, uint32_t signed_pre_key_id);
-int axolotl_signed_pre_key_remove_key(axolotl_store_context *context, uint32_t signed_pre_key_id);
+int signal_protocol_signed_pre_key_load_key(signal_protocol_store_context *context, session_signed_pre_key **pre_key, uint32_t signed_pre_key_id);
+int signal_protocol_signed_pre_key_store_key(signal_protocol_store_context *context, session_signed_pre_key *pre_key);
+int signal_protocol_signed_pre_key_contains_key(signal_protocol_store_context *context, uint32_t signed_pre_key_id);
+int signal_protocol_signed_pre_key_remove_key(signal_protocol_store_context *context, uint32_t signed_pre_key_id);
 
 
 /*
  * Interface to the identity key store.
  * These functions will use the callbacks in the provided
- * axolotl_store_context instance and operate in terms of higher level
+ * signal_protocol_store_context instance and operate in terms of higher level
  * library data structures.
  */
 
-int axolotl_identity_get_key_pair(axolotl_store_context *context, ratchet_identity_key_pair **key_pair);
-int axolotl_identity_get_local_registration_id(axolotl_store_context *context, uint32_t *registration_id);
-int axolotl_identity_save_identity(axolotl_store_context *context, const char *name, size_t name_len, ec_public_key *identity_key);
-int axolotl_identity_is_trusted_identity(axolotl_store_context *context, const char *name, size_t name_len, ec_public_key *identity_key);
+int signal_protocol_identity_get_key_pair(signal_protocol_store_context *context, ratchet_identity_key_pair **key_pair);
+int signal_protocol_identity_get_local_registration_id(signal_protocol_store_context *context, uint32_t *registration_id);
+int signal_protocol_identity_save_identity(signal_protocol_store_context *context, const signal_protocol_address *address, ec_public_key *identity_key);
+int signal_protocol_identity_is_trusted_identity(signal_protocol_store_context *context, const signal_protocol_address *address, ec_public_key *identity_key);
 
 
 /*
  * Interface to the sender key store.
  * These functions will use the callbacks in the provided
- * axolotl_store_context instance and operate in terms of higher level
+ * signal_protocol_store_context instance and operate in terms of higher level
  * library data structures.
  */
 
-int axolotl_sender_key_store_key(axolotl_store_context *context, const axolotl_sender_key_name *sender_key_name, sender_key_record *record);
-int axolotl_sender_key_load_key(axolotl_store_context *context, sender_key_record **record, const axolotl_sender_key_name *sender_key_name);
+int signal_protocol_sender_key_store_key(signal_protocol_store_context *context, const signal_protocol_sender_key_name *sender_key_name, sender_key_record *record);
+int signal_protocol_sender_key_load_key(signal_protocol_store_context *context, sender_key_record **record, const signal_protocol_sender_key_name *sender_key_name);
 
 #ifdef __cplusplus
 }
 #endif
 
-#endif /* AXOLOTL_H */
+#endif /* SIGNAL_PROTOCOL_H */
diff --git a/libs/libaxolotl/src/signal_protocol_internal.h b/libs/libaxolotl/src/signal_protocol_internal.h
new file mode 100755
index 0000000000..de89876c00
--- /dev/null
+++ b/libs/libaxolotl/src/signal_protocol_internal.h
@@ -0,0 +1,87 @@
+#ifndef SIGNAL_PROTOCOL_INTERNAL_H
+#define SIGNAL_PROTOCOL_INTERNAL_H
+
+#include "protobuf-c/protobuf-c.h"
+#include "LocalStorageProtocol.pb-c.h"
+#include "signal_protocol.h"
+
+struct signal_type_base {
+    unsigned int ref_count;
+    void (*destroy)(signal_type_base *instance);
+};
+
+void signal_type_init(signal_type_base *instance,
+        void (*destroy_func)(signal_type_base *instance));
+
+#define SIGNAL_INIT(instance, destroy_func) signal_type_init((signal_type_base *)instance, destroy_func)
+
+struct signal_buffer {
+    size_t len;
+    uint8_t data[];
+};
+
+struct signal_context {
+    signal_crypto_provider crypto_provider;
+    void (*lock)(void *user_data);
+    void (*unlock)(void *user_data);
+    void (*log)(int level, const char *message, size_t len, void *user_data);
+    void *user_data;
+};
+
+int signal_crypto_random(signal_context *context, uint8_t *data, size_t len);
+
+int signal_hmac_sha256_init(signal_context *context, void **hmac_context, const uint8_t *key, size_t key_len);
+int signal_hmac_sha256_update(signal_context *context, void *hmac_context, const uint8_t *data, size_t data_len);
+int signal_hmac_sha256_final(signal_context *context, void *hmac_context, signal_buffer **output);
+void signal_hmac_sha256_cleanup(signal_context *context, void *hmac_context);
+
+int signal_sha512_digest_init(signal_context *context, void **digest_context);
+int signal_sha512_digest_update(signal_context *context, void *digest_context, const uint8_t *data, size_t data_len);
+int signal_sha512_digest_final(signal_context *context, void *digest_context, signal_buffer **output);
+void signal_sha512_digest_cleanup(signal_context *context, void *digest_context);
+
+
+int signal_encrypt(signal_context *context,
+        signal_buffer **output,
+        int cipher,
+        const uint8_t *key, size_t key_len,
+        const uint8_t *iv, size_t iv_len,
+        const uint8_t *plaintext, size_t plaintext_len);
+
+int signal_decrypt(signal_context *context,
+        signal_buffer **output,
+        int cipher,
+        const uint8_t *key, size_t key_len,
+        const uint8_t *iv, size_t iv_len,
+        const uint8_t *ciphertext, size_t ciphertext_len);
+
+void signal_lock(signal_context *context);
+void signal_unlock(signal_context *context);
+void signal_log(signal_context *context, int level, const char *format, ...);
+void signal_explicit_bzero(void *v, size_t n);
+int signal_constant_memcmp(const void *s1, const void *s2, size_t n);
+
+/*------------------------------------------------------------------------*/
+
+/*
+ * Functions used for internal protocol buffers serialization support.
+ */
+
+int ec_public_key_serialize_protobuf(ProtobufCBinaryData *buffer, const ec_public_key *key);
+int ec_private_key_serialize_protobuf(ProtobufCBinaryData *buffer, const ec_private_key *key);
+
+int ratchet_chain_key_get_key_protobuf(const ratchet_chain_key *chain_key, ProtobufCBinaryData *buffer);
+int ratchet_root_key_get_key_protobuf(const ratchet_root_key *root_key, ProtobufCBinaryData *buffer);
+
+int session_state_serialize_prepare(session_state *state, Textsecure__SessionStructure *session_structure);
+void session_state_serialize_prepare_free(Textsecure__SessionStructure *session_structure);
+int session_state_deserialize_protobuf(session_state **state, Textsecure__SessionStructure *session_structure, signal_context *global_context);
+
+int sender_key_state_serialize_prepare(sender_key_state *state, Textsecure__SenderKeyStateStructure *state_structure);
+void sender_key_state_serialize_prepare_free(Textsecure__SenderKeyStateStructure *state_structure);
+int sender_key_state_deserialize_protobuf(sender_key_state **state, Textsecure__SenderKeyStateStructure *state_structure, signal_context *global_context);
+
+void signal_protocol_str_serialize_protobuf(ProtobufCBinaryData *buffer, const char *str);
+char *signal_protocol_str_deserialize_protobuf(ProtobufCBinaryData *buffer);
+
+#endif /* SIGNAL_PROTOCOL_INTERNAL_H */
diff --git a/libs/libaxolotl/src/axolotl_types.h b/libs/libaxolotl/src/signal_protocol_types.h
index 9421a87c14..b45fa4c7e0 100644
--- a/libs/libaxolotl/src/axolotl_types.h
+++ b/libs/libaxolotl/src/signal_protocol_types.h
@@ -1,5 +1,5 @@
-#ifndef AXOLOTL_TYPES_H
-#define AXOLOTL_TYPES_H
+#ifndef SIGNAL_PROTOCOL_TYPES_H
+#define SIGNAL_PROTOCOL_TYPES_H
 
 #include <stdint.h>
 #include <stdlib.h>
@@ -18,38 +18,38 @@ extern "C" {
 /*
  * Base library types
  */
-typedef struct axolotl_type_base axolotl_type_base;
-typedef struct axolotl_buffer axolotl_buffer;
-typedef struct axolotl_buffer_list axolotl_buffer_list;
-typedef struct axolotl_int_list axolotl_int_list;
+typedef struct signal_type_base signal_type_base;
+typedef struct signal_buffer signal_buffer;
+typedef struct signal_buffer_list signal_buffer_list;
+typedef struct signal_int_list signal_int_list;
 
 /*
- * Global context for the AXOLOTL library
+ * Global context for the Signal Protocol library
  */
-typedef struct axolotl_context axolotl_context;
+typedef struct signal_context signal_context;
 
 /*
- * Context for the AXOLOTL data store implementation
+ * Context for the Signal Protocol data store implementation
  */
-typedef struct axolotl_store_context axolotl_store_context;
+typedef struct signal_protocol_store_context signal_protocol_store_context;
 
 /*
- * Address of an AXOLOTL message recipient
+ * Address of an Signal Protocol message recipient
  */
-typedef struct axolotl_address {
+typedef struct signal_protocol_address {
     const char *name;
     size_t name_len;
     int32_t device_id;
-} axolotl_address;
+} signal_protocol_address;
 
 /*
  * A representation of a (group + sender + device) tuple
  */
-typedef struct axolotl_sender_key_name {
+typedef struct signal_protocol_sender_key_name {
     const char *group_id;
     size_t group_id_len;
-    axolotl_address sender;
-} axolotl_sender_key_name;
+    signal_protocol_address sender;
+} signal_protocol_sender_key_name;
 
 /*
  * Curve key types
@@ -57,6 +57,7 @@ typedef struct axolotl_sender_key_name {
 typedef struct ec_public_key ec_public_key;
 typedef struct ec_private_key ec_private_key;
 typedef struct ec_key_pair ec_key_pair;
+typedef struct ec_public_key_list ec_public_key_list;
 
 /*
  * HKDF types
@@ -66,15 +67,14 @@ typedef struct hkdf_context hkdf_context;
 /*
  * Key helper types
  */
-typedef struct axolotl_key_helper_pre_key_list_node axolotl_key_helper_pre_key_list_node;
+typedef struct signal_protocol_key_helper_pre_key_list_node signal_protocol_key_helper_pre_key_list_node;
 
 /*
  * Protocol types
  */
-typedef struct key_exchange_message key_exchange_message;
 typedef struct ciphertext_message ciphertext_message;
-typedef struct whisper_message whisper_message;
-typedef struct pre_key_whisper_message pre_key_whisper_message;
+typedef struct signal_message signal_message;
+typedef struct pre_key_signal_message pre_key_signal_message;
 typedef struct sender_key_message sender_key_message;
 typedef struct sender_key_distribution_message sender_key_distribution_message;
 
@@ -126,8 +126,16 @@ typedef struct displayable_fingerprint displayable_fingerprint;
 typedef struct scannable_fingerprint scannable_fingerprint;
 typedef struct fingerprint_generator fingerprint_generator;
 
+/*
+ * Device consistency types
+ */
+typedef struct device_consistency_signature device_consistency_signature;
+typedef struct device_consistency_commitment device_consistency_commitment;
+typedef struct device_consistency_message device_consistency_message;
+typedef struct device_consistency_signature_list device_consistency_signature_list;
+
 #ifdef __cplusplus
 }
 #endif
 
-#endif // AXOLOTL_TYPES_H
+#endif /* SIGNAL_PROTOCOL_TYPES_H */
author	Gluzskiy Alexandr <sss@sss.chaoslab.ru>	2017-02-13 07:56:33 +0300
committer	Gluzskiy Alexandr <sss@sss.chaoslab.ru>	2017-02-13 09:09:08 +0300
commit	193f645f65ad4ffdec3186e4176b23af10861199 (patch)
tree	e1b16b48ac74c5f03f99a98798e849f6dd9752cc /libs/libaxolotl
parent	36c32a13878d3bd94e88bd9c764f1eadb05ea1ed (diff)