1 files changed, 82 insertions, 0 deletions
diff --git a/libs/libaxolotl/src/axolotl_internal.h b/libs/libaxolotl/src/axolotl_internal.h
new file mode 100644
index 0000000000..3ecddbda7f
--- /dev/null
+++ b/libs/libaxolotl/src/axolotl_internal.h
@@ -0,0 +1,82 @@
+#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 */