1 files changed, 87 insertions, 0 deletions
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 */