laipower/wp-content/plugins/wp-webauthn/vendor/web-token/jwt-signature-algorithm-rsa/RSAPKCS1.php

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<?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));
}
}
}
}