/**
* Verify signature with public key
*
* $signature can be encoded in base64 or not. $mode sets how the input must be processed:
* - MODE_AUTO: Check if the $signature is encoded in base64. Not recommended for performance.
* - MODE_BASE64: Decode $signature using base64 algorithm.
* - MODE_RAW: $signature is not encoded.
*
* @param string $data
* @param string $signature
* @param null|Rsa\PublicKey $publicKey
* @param int $mode Input encoding
* @return bool
* @throws Rsa\Exception\RuntimeException
* @see Rsa::MODE_AUTO
* @see Rsa::MODE_BASE64
* @see Rsa::MODE_RAW
*/
public function verify($data, $signature, Rsa\PublicKey $publicKey = null, $mode = self::MODE_AUTO)
{
if (null === $publicKey) {
$publicKey = $this->options->getPublicKey();
}
switch ($mode) {
case self::MODE_AUTO:
// check if data is encoded in Base64
$output = base64_decode($signature, true);
if (false !== $output && $signature === base64_encode($output)) {
$signature = $output;
}
break;
case self::MODE_BASE64:
$signature = base64_decode($signature);
break;
case self::MODE_RAW:
default:
break;
}
$result = openssl_verify($data, $signature, $publicKey->getOpensslKeyResource(), $this->options->getOpensslSignatureAlgorithm());
if (-1 === $result) {
throw new Exception\RuntimeException('Can not verify signature; openssl ' . $this->getOpensslErrorString());
}
return $result === 1;
}
/**
* Verify signature with public key
*
* @param string $data
* @param string $signature
* @param null|Rsa\PublicKey $publicKey
* @return bool
* @throws Rsa\Exception\RuntimeException
*/
public function verify($data, $signature, Rsa\PublicKey $publicKey = null)
{
if (null === $publicKey) {
$publicKey = $this->options->getPublicKey();
}
$result = openssl_verify($data, $signature, $publicKey->getOpensslKeyResource(), $this->options->getOpensslSignatureAlgorithm());
if (-1 === $result) {
throw new Exception\RuntimeException('Can not verify signature; openssl ' . openssl_error_string());
}
return $result === 1;
}
/**
* Verify signature with public key
*
* @param string $data
* @param string $signature
* @param null|Rsa\PublicKey $publicKey
* @return bool
* @throws Rsa\Exception\RuntimeException
*/
public function verify($data, $signature, Rsa\PublicKey $publicKey = null)
{
if (null === $publicKey) {
$publicKey = $this->options->getPublicKey();
}
// check if signature is encoded in Base64
$output = base64_decode($signature, true);
if (false !== $output) {
$signature = $output;
}
$result = openssl_verify($data, $signature, $publicKey->getOpensslKeyResource(), $this->options->getOpensslSignatureAlgorithm());
if (-1 === $result) {
throw new Exception\RuntimeException('Can not verify signature; openssl ' . openssl_error_string());
}
return $result === 1;
}
