153 lines
4.7 KiB
PHP
153 lines
4.7 KiB
PHP
<?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) 2014-2020 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 function count;
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use InvalidArgumentException;
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use function is_string;
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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->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(), $this->mandatoryClaims);
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return $jwt;
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}
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protected function getAlgorithmMap(): array
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{
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return [
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KeyEncryption\A128GCMKW::class,
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KeyEncryption\A192GCMKW::class,
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KeyEncryption\A256GCMKW::class,
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KeyEncryption\A128KW::class,
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KeyEncryption\A192KW::class,
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KeyEncryption\A256KW::class,
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KeyEncryption\Dir::class,
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KeyEncryption\ECDHES::class,
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KeyEncryption\ECDHESA128KW::class,
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KeyEncryption\ECDHESA192KW::class,
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KeyEncryption\ECDHESA256KW::class,
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KeyEncryption\PBES2HS256A128KW::class,
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KeyEncryption\PBES2HS384A192KW::class,
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KeyEncryption\PBES2HS512A256KW::class,
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KeyEncryption\RSA15::class,
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KeyEncryption\RSAOAEP::class,
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KeyEncryption\RSAOAEP256::class,
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ContentEncryption\A128GCM::class,
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ContentEncryption\A192GCM::class,
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ContentEncryption\A256GCM::class,
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ContentEncryption\A128CBCHS256::class,
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ContentEncryption\A192CBCHS384::class,
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ContentEncryption\A256CBCHS512::class,
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];
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}
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}
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