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<?php
/*
* The MIT License (MIT)
*
* Copyright (c) 2014-2016 Spomky-Labs
* This software may be modified and distributed under the terms
* of the MIT license. See the LICENSE file for details.
*/
namespace Jose\Algorithm\KeyEncryption;
use Assert\Assertion;
use Base64Url\Base64Url;
use Jose\Object\JWKInterface;
final class Dir implements DirectEncryptionInterface
{
/**
* {@inheritdoc}
public function getCEK(JWKInterface $key)
Assertion::eq($key->get('kty'), 'oct', 'Wrong key type.');
Assertion::true($key->has('k'), 'The key parameter "k" is missing.');
return Base64Url::decode($key->get('k'));
}
public function getAlgorithmName()
return 'dir';
public function getKeyManagementMode()
return self::MODE_DIRECT;