ECDSA_verify
ret = ECDSA_verify(0, buf, 20, ecdsasig,
ret = ECDSA_verify(0, buf, 20, ecdsasig, ecdsasiglen, ecdsa[j]);
ret = ECDSA_verify(type, tbs, tbslen, sig, siglen, ec);
int ECDSA_verify(int type, const unsigned char *dgst, int dgstlen,
verify = ECDSA_verify(0,