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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) 2014-2019 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\Easy; |
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use InvalidArgumentException; |
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use Jose\Component\Checker; |
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use Jose\Component\Core\Algorithm; |
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use Jose\Component\Core\AlgorithmManager; |
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use Jose\Component\Core\Util\JsonConverter; |
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use Jose\Component\Encryption\Algorithm\ContentEncryption; |
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use Jose\Component\Encryption\Algorithm\KeyEncryption; |
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use Jose\Component\Encryption\Compression\CompressionMethod; |
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use Jose\Component\Encryption\Compression\CompressionMethodManager; |
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use Jose\Component\Encryption\Compression\Deflate; |
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use Jose\Component\Encryption\JWEDecrypter; |
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use Jose\Component\Encryption\JWETokenSupport; |
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use Jose\Component\Encryption\Serializer\CompactSerializer; |
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class Decrypt extends AbstractLoader |
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{ |
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/** |
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* @var string[] |
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*/ |
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protected $allowedContentEncryptionAlgorithms = []; |
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/** |
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* @var CompressionMethod[] |
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*/ |
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private $compressionMethods; |
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private function __construct(string $token) |
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{ |
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parent::__construct($token); |
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$this->algorithms = [ |
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new KeyEncryption\A128GCMKW(), |
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new KeyEncryption\A192GCMKW(), |
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new KeyEncryption\A256GCMKW(), |
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new KeyEncryption\A128KW(), |
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new KeyEncryption\A192KW(), |
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new KeyEncryption\A256KW(), |
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new KeyEncryption\Dir(), |
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new KeyEncryption\ECDHES(), |
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new KeyEncryption\ECDHESA128KW(), |
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new KeyEncryption\ECDHESA192KW(), |
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new KeyEncryption\ECDHESA256KW(), |
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new KeyEncryption\PBES2HS256A128KW(), |
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new KeyEncryption\PBES2HS384A192KW(), |
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new KeyEncryption\PBES2HS512A256KW(), |
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new KeyEncryption\RSA15(), |
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new KeyEncryption\RSAOAEP(), |
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new KeyEncryption\RSAOAEP256(), |
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new ContentEncryption\A128GCM(), |
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new ContentEncryption\A192GCM(), |
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new ContentEncryption\A256GCM(), |
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new ContentEncryption\A128CBCHS256(), |
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new ContentEncryption\A192CBCHS384(), |
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new ContentEncryption\A256CBCHS512(), |
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]; |
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$this->compressionMethods = [ |
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new Deflate(), |
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]; |
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} |
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public static function token(string $token): self |
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{ |
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return new self($token); |
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} |
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/** |
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* @param Algorithm|string $enc |
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* |
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* @throws InvalidArgumentException if the encryption algorithm is invalid |
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*/ |
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public function enc($enc): self |
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{ |
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$clone = clone $this; |
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switch (true) { |
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case \is_string($enc): |
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$clone->allowedContentEncryptionAlgorithms[] = $enc; |
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return $clone; |
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case $enc instanceof Algorithm: |
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$clone->algorithms[$enc->name()] = $enc; |
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$clone->allowedContentEncryptionAlgorithms[] = $enc->name(); |
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return $clone; |
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default: |
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throw new InvalidArgumentException('Invalid parameter "enc". Shall be a string or an algorithm instance.'); |
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} |
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} |
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/** |
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* @param Algorithm[]|string[] $encs |
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*/ |
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public function encs($encs): self |
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{ |
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$clone = clone $this; |
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foreach ($encs as $enc) { |
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$clone = $clone->enc($enc); |
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} |
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return $clone; |
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} |
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public function run(): JWT |
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{ |
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if (0 !== \count($this->allowedAlgorithms)) { |
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$this->headerCheckers[] = new Checker\AlgorithmChecker($this->allowedAlgorithms, true); |
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} |
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if (0 !== \count($this->allowedContentEncryptionAlgorithms)) { |
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$this->headerCheckers[] = new ContentEncryptionAlgorithmChecker($this->allowedContentEncryptionAlgorithms, true); |
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} |
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$jwe = (new CompactSerializer())->unserialize($this->token); |
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$headerChecker = new Checker\HeaderCheckerManager($this->headerCheckers, [new JWETokenSupport()]); |
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$headerChecker->check($jwe, 0); |
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$verifier = new JWEDecrypter( |
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new AlgorithmManager($this->algorithms), |
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new AlgorithmManager($this->algorithms), |
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new CompressionMethodManager($this->compressionMethods) |
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); |
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$verifier->decryptUsingKeySet($jwe, $this->jwkset, 0); |
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$jwt = new JWT(); |
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$jwt->header->replace($jwe->getSharedProtectedHeader()); |
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$jwt->claims->replace(JsonConverter::decode($jwe->getPayload())); |
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$claimChecker = new Checker\ClaimCheckerManager($this->claimCheckers); |
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$claimChecker->check($jwt->claims->all()); |
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return $jwt; |
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} |
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} |
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