76 lines
2.0 KiB
PHP
76 lines
2.0 KiB
PHP
<?php
|
|
|
|
declare(strict_types=1);
|
|
|
|
/*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2014-2020 Spomky-Labs
|
|
*
|
|
* This software may be modified and distributed under the terms
|
|
* of the MIT license. See the LICENSE file for details.
|
|
*/
|
|
|
|
namespace Jose\Component\Signature\Algorithm;
|
|
|
|
use function in_array;
|
|
use InvalidArgumentException;
|
|
use Jose\Component\Core\JWK;
|
|
use Jose\Component\Core\Util\RSAKey;
|
|
use RuntimeException;
|
|
|
|
abstract class RSAPKCS1 implements SignatureAlgorithm
|
|
{
|
|
public function allowedKeyTypes(): array
|
|
{
|
|
return ['RSA'];
|
|
}
|
|
|
|
public function verify(JWK $key, string $input, string $signature): bool
|
|
{
|
|
$this->checkKey($key);
|
|
$pub = RSAKey::createFromJWK($key->toPublic());
|
|
|
|
return 1 === openssl_verify($input, $signature, $pub->toPEM(), $this->getAlgorithm());
|
|
}
|
|
|
|
/**
|
|
* @throws InvalidArgumentException if the key is not private
|
|
* @throws InvalidArgumentException if the data cannot be signed
|
|
*/
|
|
public function sign(JWK $key, string $input): string
|
|
{
|
|
$this->checkKey($key);
|
|
if (!$key->has('d')) {
|
|
throw new InvalidArgumentException('The key is not a private key.');
|
|
}
|
|
|
|
$priv = RSAKey::createFromJWK($key);
|
|
|
|
$result = openssl_sign($input, $signature, $priv->toPEM(), $this->getAlgorithm());
|
|
if (true !== $result) {
|
|
throw new RuntimeException('Unable to sign');
|
|
}
|
|
|
|
return $signature;
|
|
}
|
|
|
|
abstract protected function getAlgorithm(): string;
|
|
|
|
/**
|
|
* @throws InvalidArgumentException if the key type is not allowed
|
|
* @throws InvalidArgumentException if the key is not valid
|
|
*/
|
|
private function checkKey(JWK $key): void
|
|
{
|
|
if (!in_array($key->get('kty'), $this->allowedKeyTypes(), true)) {
|
|
throw new InvalidArgumentException('Wrong key type.');
|
|
}
|
|
foreach (['n', 'e'] as $k) {
|
|
if (!$key->has($k)) {
|
|
throw new InvalidArgumentException(sprintf('The key parameter "%s" is missing.', $k));
|
|
}
|
|
}
|
|
}
|
|
}
|