1 files changed, 73 insertions, 0 deletions
diff --git a/libs/libaxolotl/src/curve.h b/libs/libaxolotl/src/curve.h
new file mode 100644
index 0000000000..851d05a319
--- /dev/null
+++ b/libs/libaxolotl/src/curve.h
@@ -0,0 +1,73 @@
+#ifndef CURVE_H
+#define CURVE_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include "axolotl_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define CURVE_SIGNATURE_LEN 64
+
+int curve_decode_point(ec_public_key **public_key, const uint8_t *key_data, size_t key_len, axolotl_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);
+
+/**
+ * Serialize the public key into a buffer that can be stored.
+ * The format of this data is compatible with the input format of
+ * curve_decode_point().
+ *
+ * @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().
+ * @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);
+
+void ec_public_key_destroy(axolotl_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 ec_private_key_compare(const ec_private_key *key1, const ec_private_key *key2);
+
+/**
+ * Serialize the private key into a buffer that can be stored.
+ * The format of this data is compatible with the input format of
+ * curve_decode_private_point().
+ *
+ * @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().
+ * @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);
+
+void ec_private_key_destroy(axolotl_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);
+
+int curve_generate_private_key(axolotl_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);
+
+int curve_calculate_agreement(uint8_t **shared_key_data, const ec_public_key *public_key, const ec_private_key *private_key);
+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,
+        const ec_private_key *signing_key,
+        const uint8_t *message_data, size_t message_len);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CURVE_H */