<?php

declare(strict_types=1);

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2014-2018 Spomky-Labs
 *
 * This software may be modified and distributed under the terms
 * of the MIT license.  See the LICENSE file for details.
 */

namespace Jose\Component\Signature\Algorithm\Tests;

use Jose\Component\Core\AlgorithmManager;
use Jose\Component\Core\Converter\StandardConverter;
use Jose\Component\Core\JWK;
use Jose\Component\Signature\Algorithm\RS256;
use Jose\Component\Signature\JWSBuilder;
use Jose\Component\Signature\JWSVerifier;
use Jose\Component\Signature\Serializer;
use PHPUnit\Framework\TestCase;

/**
 * @see https://tools.ietf.org/html/rfc7520#section-4.1
 *
 * @group RFC7520
 */
class RSA15SignatureTest extends TestCase
{
    /**
     * @test
     */
    public function rS256()
    {
        /*
         * Payload,
         * RSA private key
         * @see https://tools.ietf.org/html/rfc7520#section-3.4
         * @see https://tools.ietf.org/html/rfc7520#section-4.1.1
         */
        $payload = "It\xe2\x80\x99s a dangerous business, Frodo, going out your door. You step onto the road, and if you don't keep your feet, there\xe2\x80\x99s no knowing where you might be swept off to.";
        $privateKey = JWK::create([
            'kty' => 'RSA',
            'kid' => 'bilbo.baggins@hobbiton.example',
            'use' => 'sig',
            'n' => 'n4EPtAOCc9AlkeQHPzHStgAbgs7bTZLwUBZdR8_KuKPEHLd4rHVTeT-O-XV2jRojdNhxJWTDvNd7nqQ0VEiZQHz_AJmSCpMaJMRBSFKrKb2wqVwGU_NsYOYL-QtiWN2lbzcEe6XC0dApr5ydQLrHqkHHig3RBordaZ6Aj-oBHqFEHYpPe7Tpe-OfVfHd1E6cS6M1FZcD1NNLYD5lFHpPI9bTwJlsde3uhGqC0ZCuEHg8lhzwOHrtIQbS0FVbb9k3-tVTU4fg_3L_vniUFAKwuCLqKnS2BYwdq_mzSnbLY7h_qixoR7jig3__kRhuaxwUkRz5iaiQkqgc5gHdrNP5zw',
            'e' => 'AQAB',
            'd' => 'bWUC9B-EFRIo8kpGfh0ZuyGPvMNKvYWNtB_ikiH9k20eT-O1q_I78eiZkpXxXQ0UTEs2LsNRS-8uJbvQ-A1irkwMSMkK1J3XTGgdrhCku9gRldY7sNA_AKZGh-Q661_42rINLRCe8W-nZ34ui_qOfkLnK9QWDDqpaIsA-bMwWWSDFu2MUBYwkHTMEzLYGqOe04noqeq1hExBTHBOBdkMXiuFhUq1BU6l-DqEiWxqg82sXt2h-LMnT3046AOYJoRioz75tSUQfGCshWTBnP5uDjd18kKhyv07lhfSJdrPdM5Plyl21hsFf4L_mHCuoFau7gdsPfHPxxjVOcOpBrQzwQ',
            'p' => '3Slxg_DwTXJcb6095RoXygQCAZ5RnAvZlno1yhHtnUex_fp7AZ_9nRaO7HX_-SFfGQeutao2TDjDAWU4Vupk8rw9JR0AzZ0N2fvuIAmr_WCsmGpeNqQnev1T7IyEsnh8UMt-n5CafhkikzhEsrmndH6LxOrvRJlsPp6Zv8bUq0k',
            'q' => 'uKE2dh-cTf6ERF4k4e_jy78GfPYUIaUyoSSJuBzp3Cubk3OCqs6grT8bR_cu0Dm1MZwWmtdqDyI95HrUeq3MP15vMMON8lHTeZu2lmKvwqW7anV5UzhM1iZ7z4yMkuUwFWoBvyY898EXvRD-hdqRxHlSqAZ192zB3pVFJ0s7pFc',
            'dp' => 'B8PVvXkvJrj2L-GYQ7v3y9r6Kw5g9SahXBwsWUzp19TVlgI-YV85q1NIb1rxQtD-IsXXR3-TanevuRPRt5OBOdiMGQp8pbt26gljYfKU_E9xn-RULHz0-ed9E9gXLKD4VGngpz-PfQ_q29pk5xWHoJp009Qf1HvChixRX59ehik',
            'dq' => 'CLDmDGduhylc9o7r84rEUVn7pzQ6PF83Y-iBZx5NT-TpnOZKF1pErAMVeKzFEl41DlHHqqBLSM0W1sOFbwTxYWZDm6sI6og5iTbwQGIC3gnJKbi_7k_vJgGHwHxgPaX2PnvP-zyEkDERuf-ry4c_Z11Cq9AqC2yeL6kdKT1cYF8',
            'qi' => '3PiqvXQN0zwMeE-sBvZgi289XP9XCQF3VWqPzMKnIgQp7_Tugo6-NZBKCQsMf3HaEGBjTVJs_jcK8-TRXvaKe-7ZMaQj8VfBdYkssbu0NKDDhjJ-GtiseaDVWt7dcH0cfwxgFUHpQh7FoCrjFJ6h6ZEpMF6xmujs4qMpPz8aaI4',
        ]);

        /*
         * Header
         * @see https://tools.ietf.org/html/rfc7520#section-4.1.2
         */
        $header = [
            'alg' => 'RS256',
            'kid' => 'bilbo.baggins@hobbiton.example',
        ];

        $jwsBuilder = new JWSBuilder(
            new StandardConverter(),
            AlgorithmManager::create([new RS256()])
        );
        $jwsVerifier = new JWSVerifier(
            AlgorithmManager::create([new RS256()])
        );
        $compactSerializer = new Serializer\CompactSerializer(
            new StandardConverter()
        );
        $jsonFlattenedSerializer = new Serializer\JSONFlattenedSerializer(
            new StandardConverter()
        );
        $jsonGeneralSerializer = new Serializer\JSONGeneralSerializer(
            new StandardConverter()
        );
        $jws = $jwsBuilder
            ->create()->withPayload($payload)
            ->addSignature($privateKey, $header)
            ->build();

        /*
         * Header
         * @see https://tools.ietf.org/html/rfc7520#section-4.1.3
         */
        $expected_compact_json = 'eyJhbGciOiJSUzI1NiIsImtpZCI6ImJpbGJvLmJhZ2dpbnNAaG9iYml0b24uZXhhbXBsZSJ9.SXTigJlzIGEgZGFuZ2Vyb3VzIGJ1c2luZXNzLCBGcm9kbywgZ29pbmcgb3V0IHlvdXIgZG9vci4gWW91IHN0ZXAgb250byB0aGUgcm9hZCwgYW5kIGlmIHlvdSBkb24ndCBrZWVwIHlvdXIgZmVldCwgdGhlcmXigJlzIG5vIGtub3dpbmcgd2hlcmUgeW91IG1pZ2h0IGJlIHN3ZXB0IG9mZiB0by4.MRjdkly7_-oTPTS3AXP41iQIGKa80A0ZmTuV5MEaHoxnW2e5CZ5NlKtainoFmKZopdHM1O2U4mwzJdQx996ivp83xuglII7PNDi84wnB-BDkoBwA78185hX-Es4JIwmDLJK3lfWRa-XtL0RnltuYv746iYTh_qHRD68BNt1uSNCrUCTJDt5aAE6x8wW1Kt9eRo4QPocSadnHXFxnt8Is9UzpERV0ePPQdLuW3IS_de3xyIrDaLGdjluPxUAhb6L2aXic1U12podGU0KLUQSE_oI-ZnmKJ3F4uOZDnd6QZWJushZ41Axf_fcIe8u9ipH84ogoree7vjbU5y18kDquDg';
        $expected_flattened_json = '{"payload":"SXTigJlzIGEgZGFuZ2Vyb3VzIGJ1c2luZXNzLCBGcm9kbywgZ29pbmcgb3V0IHlvdXIgZG9vci4gWW91IHN0ZXAgb250byB0aGUgcm9hZCwgYW5kIGlmIHlvdSBkb24ndCBrZWVwIHlvdXIgZmVldCwgdGhlcmXigJlzIG5vIGtub3dpbmcgd2hlcmUgeW91IG1pZ2h0IGJlIHN3ZXB0IG9mZiB0by4","protected":"eyJhbGciOiJSUzI1NiIsImtpZCI6ImJpbGJvLmJhZ2dpbnNAaG9iYml0b24uZXhhbXBsZSJ9","signature":"MRjdkly7_-oTPTS3AXP41iQIGKa80A0ZmTuV5MEaHoxnW2e5CZ5NlKtainoFmKZopdHM1O2U4mwzJdQx996ivp83xuglII7PNDi84wnB-BDkoBwA78185hX-Es4JIwmDLJK3lfWRa-XtL0RnltuYv746iYTh_qHRD68BNt1uSNCrUCTJDt5aAE6x8wW1Kt9eRo4QPocSadnHXFxnt8Is9UzpERV0ePPQdLuW3IS_de3xyIrDaLGdjluPxUAhb6L2aXic1U12podGU0KLUQSE_oI-ZnmKJ3F4uOZDnd6QZWJushZ41Axf_fcIe8u9ipH84ogoree7vjbU5y18kDquDg"}';
        $expected_json = '{"payload":"SXTigJlzIGEgZGFuZ2Vyb3VzIGJ1c2luZXNzLCBGcm9kbywgZ29pbmcgb3V0IHlvdXIgZG9vci4gWW91IHN0ZXAgb250byB0aGUgcm9hZCwgYW5kIGlmIHlvdSBkb24ndCBrZWVwIHlvdXIgZmVldCwgdGhlcmXigJlzIG5vIGtub3dpbmcgd2hlcmUgeW91IG1pZ2h0IGJlIHN3ZXB0IG9mZiB0by4","signatures":[{"protected":"eyJhbGciOiJSUzI1NiIsImtpZCI6ImJpbGJvLmJhZ2dpbnNAaG9iYml0b24uZXhhbXBsZSJ9","signature":"MRjdkly7_-oTPTS3AXP41iQIGKa80A0ZmTuV5MEaHoxnW2e5CZ5NlKtainoFmKZopdHM1O2U4mwzJdQx996ivp83xuglII7PNDi84wnB-BDkoBwA78185hX-Es4JIwmDLJK3lfWRa-XtL0RnltuYv746iYTh_qHRD68BNt1uSNCrUCTJDt5aAE6x8wW1Kt9eRo4QPocSadnHXFxnt8Is9UzpERV0ePPQdLuW3IS_de3xyIrDaLGdjluPxUAhb6L2aXic1U12podGU0KLUQSE_oI-ZnmKJ3F4uOZDnd6QZWJushZ41Axf_fcIe8u9ipH84ogoree7vjbU5y18kDquDg"}]}';

        static::assertEquals($expected_compact_json, $compactSerializer->serialize($jws, 0));

        // We decode the json to compare the 2 arrays otherwise the test may fail as the order may be different
        static::assertEquals(\json_decode($expected_flattened_json, true), \json_decode($jsonFlattenedSerializer->serialize($jws, 0), true));
        static::assertEquals(\json_decode($expected_json, true), \json_decode($jsonGeneralSerializer->serialize($jws, 0), true));

        $loaded_compact_json = $compactSerializer->unserialize($expected_compact_json);
        $jwsVerifier->verifyWithKey($loaded_compact_json, $privateKey, 0);

        $loaded_flattened_json = $jsonFlattenedSerializer->unserialize($expected_flattened_json);
        $jwsVerifier->verifyWithKey($loaded_flattened_json, $privateKey, 0);

        $loaded_json = $jsonGeneralSerializer->unserialize($expected_json);
        $jwsVerifier->verifyWithKey($loaded_json, $privateKey, 0);
    }
}
