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-rw-r--r--include/axolotl/crypto.hh19
1 files changed, 19 insertions, 0 deletions
diff --git a/include/axolotl/crypto.hh b/include/axolotl/crypto.hh
index 162099f..d772f46 100644
--- a/include/axolotl/crypto.hh
+++ b/include/axolotl/crypto.hh
@@ -48,6 +48,25 @@ void curve25519_shared_secret(
);
+/** Signs the message using our private key.
+ * The output buffer must be at least 64 bytes long. */
+void curve25519_sign(
+ Curve25519KeyPair const & our_key,
+ std::uint8_t const * message, std::size_t message_length,
+ std::uint8_t * output
+);
+
+
+/** Verify thei message using their public key.
+ * The signature input buffer must be 64 bytes long.
+ * Returns true if the signature is valid. */
+bool curve25519_verify(
+ Curve25519PublicKey const & their_key,
+ std::uint8_t const * message, std::size_t message_length,
+ std::uint8_t const * signature
+);
+
+
struct Aes256Key {
static const int LENGTH = 32;
std::uint8_t key[32];