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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) 2014-2018 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\Core\JWKSet; |
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use Jose\Component\Signature\JWS; |
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use Jose\Component\Signature\JWSLoader; |
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class NestedTokenLoader |
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{ |
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/** |
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* @var JWSLoader |
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*/ |
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private $jwsLoader; |
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/** |
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* @var JWELoader |
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*/ |
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private $jweLoader; |
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/** |
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* NestedToken constructor. |
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* |
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* @param JWELoader $jweLoader |
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* @param JWSLoader $jwsLoader |
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*/ |
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public function __construct(JWELoader $jweLoader, JWSLoader $jwsLoader) |
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{ |
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$this->jweLoader = $jweLoader; |
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$this->jwsLoader = $jwsLoader; |
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} |
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/** |
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* @param string $token |
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* @param JWKSet $encryptionKeySet |
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* @param JWKSet $signatureKeySet |
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* @param int|null $signature |
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* |
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* @throws \Exception |
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* |
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* @return JWS |
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*/ |
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public function load(string $token, JWKSet $encryptionKeySet, JWKSet $signatureKeySet, ?int &$signature = null): JWS |
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{ |
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$recipient = null; |
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$jwe = $this->jweLoader->loadAndDecryptWithKeySet($token, $encryptionKeySet, $recipient); |
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$this->checkContentTypeHeader($jwe, $recipient); |
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if (null === $jwe->getPayload()) { |
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throw new \InvalidArgumentException('The token has no payload.'); |
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} |
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return $this->jwsLoader->loadAndVerifyWithKeySet($jwe->getPayload(), $signatureKeySet, $signature); |
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} |
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/** |
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* @param JWE $jwe |
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* @param int $recipient |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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private function checkContentTypeHeader(JWE $jwe, int $recipient) |
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{ |
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switch (true) { |
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case $jwe->hasSharedProtectedHeaderParameter('cty'): |
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$cty = $jwe->getSharedProtectedHeaderParameter('cty'); |
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break; |
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case $jwe->hasSharedHeaderParameter('cty'): |
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$cty = $jwe->getSharedHeaderParameter('cty'); |
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break; |
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case $jwe->getRecipient($recipient)->hasHeaderParameter('cty'): |
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$cty = $jwe->getRecipient($recipient)->getHeaderParameter('cty'); |
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break; |
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default: |
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throw new \InvalidArgumentException('The token is not a nested token.'); |
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} |
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if (0 !== strcasecmp($cty, 'jwt')) { |
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throw new \InvalidArgumentException('The token is not a nested token.'); |
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} |
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} |
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} |
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web-token /
jwt-framework
