libaxolotl doesn't exist anymore, it's renamed to libsignal

1 files changed, 126 insertions, 0 deletions

diff --git a/libs/libsignal/src/protocol.h b/libs/libsignal/src/protocol.h
new file mode 100644
index 0000000000..73c2df9d86
--- /dev/null
+++ b/libs/libsignal/src/protocol.h
@@ -0,0 +1,126 @@
+#ifndef PROTOCOL_H
+#define PROTOCOL_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include "signal_protocol_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_SIGNAL_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 ciphertext_message_get_type(const ciphertext_message *message);
+signal_buffer *ciphertext_message_get_serialized(const ciphertext_message *message);
+
+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,
+        signal_context *global_context);
+
+int signal_message_deserialize(signal_message **message, const uint8_t *data, size_t len,
+        signal_context *global_context);
+
+int signal_message_copy(signal_message **message, signal_message *other_message, signal_context *global_context);
+
+ec_public_key *signal_message_get_sender_ratchet_key(const signal_message *message);
+
+uint8_t signal_message_get_message_version(const signal_message *message);
+
+uint32_t signal_message_get_counter(const signal_message *message);
+
+signal_buffer *signal_message_get_body(const signal_message *message);
+
+/**
+ * Verify the MAC on the Signal message.
+ *
+ * @return 1 if verified, 0 if invalid, negative on error
+ */
+int signal_message_verify_mac(signal_message *message,
+        ec_public_key *sender_identity_key,
+        ec_public_key *receiver_identity_key,
+        const uint8_t *mac_key, size_t mac_key_len,
+        signal_context *global_context);
+
+int signal_message_is_legacy(const uint8_t *data, size_t len);
+
+void signal_message_destroy(signal_type_base *type);
+
+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,
+        signal_message *message,
+        signal_context *global_context);
+
+int pre_key_signal_message_deserialize(pre_key_signal_message **message,
+        const uint8_t *data, size_t len,
+        signal_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_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_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,
+        signal_context *global_context);
+int sender_key_message_deserialize(sender_key_message **message,
+        const uint8_t *data, size_t len,
+        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);
+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(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,
+        signal_context *global_context);
+int sender_key_distribution_message_deserialize(sender_key_distribution_message **message,
+        const uint8_t *data, size_t len,
+        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);
+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(signal_type_base *type);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PROTOCOL_H */