diff --git a/ecdh.h b/ecdh.h
index 485e522..07362bf 100644
--- a/ecdh.h
+++ b/ecdh.h
@@ -93,6 +93,10 @@ int ecdh_generate_keys(uint8_t* public, uint8_t* private);
 int ecdh_shared_secret(const uint8_t* private, const uint8_t* others_pub, uint8_t* output);
 
 
+/* Broken :( .... */
+int ecdsa_sign(const uint8_t* private, uint8_t* hash, uint8_t* random_k, uint8_t* signature);
+int ecdsa_verify(const uint8_t* public, uint8_t* hash, const uint8_t* signature);
+
 
 /******************************************************************************/