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<?php |
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declare(strict_types=1); |
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/* |
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* The MIT License (MIT) |
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* |
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* Copyright (c) 2014-2017 Spomky-Labs |
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* |
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* This software may be modified and distributed under the terms |
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* of the MIT license. See the LICENSE file for details. |
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*/ |
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namespace Jose\Component\Encryption; |
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use Jose\Component\Checker\HeaderCheckerManager; |
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use Jose\Component\Core\JWK; |
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use Jose\Component\Core\JWKSet; |
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use Jose\Component\Encryption\Serializer\JWESerializerManager; |
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final class JWELoader |
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{ |
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/** |
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* @var JWEDecrypter |
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*/ |
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private $jweDecrypter; |
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/** |
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* @var HeaderCheckerManager |
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*/ |
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private $headerCheckerManager; |
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/** |
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* @var JWESerializerManager |
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*/ |
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private $serializerManager; |
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/** |
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* JWELoader constructor. |
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* |
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* @param JWESerializerManager $serializerManager |
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* @param JWEDecrypter $jweDecrypter |
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* @param HeaderCheckerManager $headerCheckerManager |
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*/ |
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public function __construct(JWESerializerManager $serializerManager, JWEDecrypter $jweDecrypter, HeaderCheckerManager $headerCheckerManager) |
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{ |
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$this->serializerManager = $serializerManager; |
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$this->jweDecrypter = $jweDecrypter; |
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$this->headerCheckerManager = $headerCheckerManager; |
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} |
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/** |
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* @param string $token |
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* @param JWK $key |
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* @param int $recipient |
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* |
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* @return JWE |
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*/ |
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public function loadAndDecryptWithKey(string $token, JWK $key, int &$recipient): JWE |
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{ |
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$keyset = JWKSet::createFromKeys([$key]); |
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return $this->loadAndDecryptWithKeySet($token, $keyset, $recipient); |
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} |
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/** |
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* @param string $token |
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* @param JWKSet $keyset |
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* @param int $recipient |
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* @return JWE |
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* |
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* @throws \Exception |
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*/ |
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public function loadAndDecryptWithKeySet(string $token, JWKSet $keyset, int &$recipient): JWE |
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{ |
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try { |
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$jwe = $this->serializerManager->unserialize($token); |
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$nbRecipients = $jwe->countRecipients(); |
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for ($i = 0; $i < $nbRecipients; $i++) { |
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if ($this->processRecipient($jwe, $keyset, $i)) { |
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$recipient = $i; |
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return $jwe; |
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} |
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} |
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} catch (\Exception $e) { |
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// Nothing to do. Exception thrown just after |
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} |
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throw new \Exception('Unable to load the token.'); |
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} |
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/** |
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* @param JWE $jwe |
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* @param JWKSet $keyset |
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* @param int $recipient |
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* |
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* @return bool |
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*/ |
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private function processRecipient(JWE &$jwe, JWKSet $keyset, int $recipient): bool |
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{ |
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try { |
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$this->headerCheckerManager->check($jwe, $recipient); |
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return $this->jweDecrypter->decryptUsingKeySet($jwe, $keyset, $recipient); |
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} catch (\Exception $e) { |
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return false; |
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} |
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} |
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} |
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web-token /
jwt-framework
