static int eckey_verify_wrap( void *ctx, md_type_t md_alg,
const unsigned char *hash, size_t hash_len,
const unsigned char *sig, size_t sig_len )
{
int ret;
ecdsa_context ecdsa;
ecdsa_init( &ecdsa );
if( ( ret = ecdsa_from_keypair( &ecdsa, ctx ) ) == 0 )
ret = ecdsa_verify_wrap( &ecdsa, md_alg, hash, hash_len, sig, sig_len );
ecdsa_free( &ecdsa );
return( ret );
}
static int eckey_sign_wrap( void *ctx, md_type_t md_alg,
const unsigned char *hash, size_t hash_len,
unsigned char *sig, size_t *sig_len,
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
{
int ret;
ecdsa_context ecdsa;
ecdsa_init( &ecdsa );
if( ( ret = ecdsa_from_keypair( &ecdsa, ctx ) ) == 0 )
ret = ecdsa_sign_wrap( &ecdsa, md_alg, hash, hash_len, sig, sig_len,
f_rng, p_rng );
ecdsa_free( &ecdsa );
return( ret );
}
static mrb_value mrb_ecdsa_load_pem(mrb_state *mrb, mrb_value self) {
ecdsa_context *ecdsa;
pk_context pkey;
mrb_value pem;
int ret = 0;
mrb_get_args(mrb, "S", &pem);
pk_init( &pkey );
ret = pk_parse_key(&pkey, RSTRING_PTR(pem), RSTRING_LEN(pem), NULL, 0);
if (ret == 0) {
ecdsa = DATA_CHECK_GET_PTR(mrb, self, &mrb_ecdsa_type, ecdsa_context);
ret = ecdsa_from_keypair(ecdsa, pk_ec(pkey));
if (ret == 0) {
return mrb_true_value();
}
}
pk_free( &pkey );
mrb_raise(mrb, E_RUNTIME_ERROR, "can't parse pem");
return mrb_false_value();
}
