/**
* @param array $values
*
* @return \phpseclib\Crypt\RSA
*/
private function getRsaObject(array $values)
{
$rsa = KeyConverter::fromArrayToRSACrypt($values);
$encryption_mode = $this->getEncryptionMode();
$rsa->setEncryptionMode($encryption_mode);
if (PHPSecLibRSA::ENCRYPTION_OAEP === $encryption_mode) {
$rsa->setHash($this->getHashAlgorithm());
$rsa->setMGFHash($this->getHashAlgorithm());
}
return $rsa;
}
/**
* {@inheritdoc}
*/
public function sign(JWKInterface $key, $input)
{
$this->checkKey($key);
$values = array_intersect_key($key->getAll(), array_flip(['n', 'e', 'p', 'd', 'q', 'dp', 'dq', 'qi']));
$rsa = KeyConverter::fromArrayToRSACrypt($values);
if ($rsa->getPrivateKey() === false) {
throw new \InvalidArgumentException('The key is not a private key');
}
$rsa->setHash($this->getAlgorithm());
if ($this->getSignatureMethod() === \phpseclib\Crypt\RSA::SIGNATURE_PSS) {
$rsa->setMGFHash($this->getAlgorithm());
$rsa->setSaltLength(0);
}
$rsa->setSignatureMode($this->getSignatureMethod());
$result = $rsa->sign($input);
if ($result === false) {
throw new \RuntimeException('An error occurred during the creation of the signature');
}
return $result;
}
