* \return pointer to a ECDSA_METHOD structure or NULL if an error occurred
*/
-ECDSA_METHOD *ECDSA_METHOD_new(ECDSA_METHOD *ecdsa_method);
+ECDSA_METHOD *ECDSA_METHOD_new(const ECDSA_METHOD *ecdsa_method);
/** frees a ECDSA_METHOD structure
* \param ecdsa_method pointer to the ECDSA_METHOD structure