libaxolotl - initial commit

git-svn-id: http://svn.miranda-ng.org/main/trunk@16169 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c

1 files changed, 151 insertions, 0 deletions

diff --git a/libs/libaxolotl/src/protocol.h b/libs/libaxolotl/src/protocol.h
new file mode 100644
index 0000000000..e149ae84a1
--- /dev/null
+++ b/libs/libaxolotl/src/protocol.h
@@ -0,0 +1,151 @@
+#ifndef PROTOCOL_H
+#define PROTOCOL_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include "axolotl_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define KEY_EXCHANGE_INITIATE_FLAG              0x01
+#define KEY_EXCHANGE_RESPONSE_FLAG              0X02
+#define KEY_EXCHANGE_SIMULTAENOUS_INITIATE_FLAG 0x04
+
+#define CIPHERTEXT_UNSUPPORTED_VERSION         1
+#define CIPHERTEXT_CURRENT_VERSION             3
+
+#define CIPHERTEXT_WHISPER_TYPE                2
+#define CIPHERTEXT_PREKEY_TYPE                 3
+#define CIPHERTEXT_SENDERKEY_TYPE              4
+#define CIPHERTEXT_SENDERKEY_DISTRIBUTION_TYPE 5
+
+/* 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);
+
+int whisper_message_create(whisper_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);
+
+int whisper_message_deserialize(whisper_message **message, const uint8_t *data, size_t len,
+        axolotl_context *global_context);
+
+int whisper_message_copy(whisper_message **message, whisper_message *other_message, axolotl_context *global_context);
+
+ec_public_key *whisper_message_get_sender_ratchet_key(const whisper_message *message);
+
+uint8_t whisper_message_get_message_version(const whisper_message *message);
+
+uint32_t whisper_message_get_counter(const whisper_message *message);
+
+axolotl_buffer *whisper_message_get_body(const whisper_message *message);
+
+/**
+ * Verify the MAC on the Whisper message.
+ *
+ * @return 1 if verified, 0 if invalid, negative on error
+ */
+int whisper_message_verify_mac(whisper_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);
+
+int whisper_message_is_legacy(const uint8_t *data, size_t len);
+
+void whisper_message_destroy(axolotl_type_base *type);
+
+int pre_key_whisper_message_create(pre_key_whisper_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);
+
+int pre_key_whisper_message_deserialize(pre_key_whisper_message **message,
+        const uint8_t *data, size_t len,
+        axolotl_context *global_context);
+
+int pre_key_whisper_message_copy(pre_key_whisper_message **message, pre_key_whisper_message *other_message, axolotl_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);
+
+void pre_key_whisper_message_destroy(axolotl_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);
+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);
+
+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);
+int sender_key_message_verify_signature(sender_key_message *message, ec_public_key *signature_key);
+
+void sender_key_message_destroy(axolotl_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);
+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);
+
+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);
+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);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PROTOCOL_H */