/**
*
* @see \CryptoUtil\Crypto\Crypto::sign()
*/
public function sign($data, PrivateKeyInfo $privkey_info, SignatureAlgorithmIdentifier $algo)
{
$this->_checkSignatureAlgoAndKey($algo, $privkey_info->algorithmIdentifier());
$result = openssl_sign($data, $signature, $privkey_info->toPEM(), $this->_algoToDigest($algo));
if (false === $result) {
throw new \RuntimeException("openssl_sign() failed: " . $this->_getLastError());
}
return new Signature($signature);
}
