81 lines
2.2 KiB
PHP
81 lines
2.2 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 defined;
|
||
|
|
use function in_array;
|
||
|
|
use InvalidArgumentException;
|
||
|
|
use Jose\Component\Core\JWK;
|
||
|
|
use Jose\Component\Core\Util\ECKey;
|
||
|
|
use Jose\Component\Core\Util\ECSignature;
|
||
|
|
use LogicException;
|
||
|
|
use Throwable;
|
||
|
|
|
||
|
|
abstract class ECDSA implements SignatureAlgorithm
|
||
|
|
{
|
||
|
|
public function __construct()
|
||
|
|
{
|
||
|
|
if (!defined('OPENSSL_KEYTYPE_EC')) {
|
||
|
|
throw new LogicException('Elliptic Curve key type not supported by your environment.');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public function allowedKeyTypes(): array
|
||
|
|
{
|
||
|
|
return ['EC'];
|
||
|
|
}
|
||
|
|
|
||
|
|
public function sign(JWK $key, string $input): string
|
||
|
|
{
|
||
|
|
$this->checkKey($key);
|
||
|
|
if (!$key->has('d')) {
|
||
|
|
throw new InvalidArgumentException('The EC key is not private');
|
||
|
|
}
|
||
|
|
$pem = ECKey::convertPrivateKeyToPEM($key);
|
||
|
|
openssl_sign($input, $signature, $pem, $this->getHashAlgorithm());
|
||
|
|
|
||
|
|
return ECSignature::fromAsn1($signature, $this->getSignaturePartLength());
|
||
|
|
}
|
||
|
|
|
||
|
|
public function verify(JWK $key, string $input, string $signature): bool
|
||
|
|
{
|
||
|
|
$this->checkKey($key);
|
||
|
|
|
||
|
|
try {
|
||
|
|
$der = ECSignature::toAsn1($signature, $this->getSignaturePartLength());
|
||
|
|
$pem = ECKey::convertPublicKeyToPEM($key);
|
||
|
|
|
||
|
|
return 1 === openssl_verify($input, $der, $pem, $this->getHashAlgorithm());
|
||
|
|
} catch (Throwable $e) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
abstract protected function getHashAlgorithm(): string;
|
||
|
|
|
||
|
|
abstract protected function getSignaturePartLength(): int;
|
||
|
|
|
||
|
|
private function checkKey(JWK $key): void
|
||
|
|
{
|
||
|
|
if (!in_array($key->get('kty'), $this->allowedKeyTypes(), true)) {
|
||
|
|
throw new InvalidArgumentException('Wrong key type.');
|
||
|
|
}
|
||
|
|
foreach (['x', 'y', 'crv'] as $k) {
|
||
|
|
if (!$key->has($k)) {
|
||
|
|
throw new InvalidArgumentException(sprintf('The key parameter "%s" is missing.', $k));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|