Hi Vitaly, On Sun, 2019-02-24 at 09:08 +0300, Vitaly Chikunov wrote: > Previous akcipher .verify() just `decrypts' (using RSA encrypt which is > using public key) signature to uncover message hash, which was then > compared in upper level public_key_verify_signature() with the expected > hash value, which itself was never passed into verify(). > > This approach was incompatible with EC-DSA family of algorithms, > because, to verify a signature EC-DSA algorithm also needs a hash value > as input; then it's used (together with a signature divided into halves > `r||s') to produce a witness value, which is then compared with `r' to > determine if the signature is correct. Thus, for EC-DSA, nor > requirements of .verify() itself, nor its output expectations in > public_key_verify_signature() wasn't sufficient. > > Make improved .verify() call which gets hash value as input and produce > complete signature check without any output besides status. > > Now for the top level verification only crypto_akcipher_verify() needs > to be called. All but this patch apply. Which branch is this patch based against? Mimi
