verify_sig
int (*verify_sig)(const unsigned char *dgst,
meth->verify_sig = verify_sig;
*pverify_sig = meth->verify_sig;
int (*verify_sig)(const unsigned char *dgst, int dgst_len,
if (eckey->meth->verify_sig != NULL)
return eckey->meth->verify_sig(dgst, dgst_len, sig, eckey);
int (*verify_sig)(const unsigned char *dgst,
unsigned char *verify_sig(const char *, int);
cp = (char *)verify_sig(argv[optind], 1);
return (verify_sig(buf, flags));