<?php

/**
 * @author    Jim Wigginton <terrafrost@php.net>
 * @copyright 2014 Jim Wigginton
 * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
 */

namespace phpseclib3\Tests\Unit\Crypt;

use phpseclib3\Crypt\TripleDES;
use phpseclib3\Tests\PhpseclibTestCase;

class TripleDESTest extends PhpseclibTestCase
{
    public static $engines = [
        'PHP',
        'Eval',
        'mcrypt',
        'OpenSSL',
    ];

    public static function engineVectors()
    {
        // tests from http://csrc.nist.gov/publications/nistpubs/800-20/800-20.pdf#page=273
        $tests = [
            // Table A.1
            // key, plaintext, ciphertext
            [str_repeat("\x01", 24), pack('H*', '8000000000000000'), pack('H*', '95F8A5E5DD31D900')],
            [str_repeat("\x01", 24), pack('H*', '4000000000000000'), pack('H*', 'DD7F121CA5015619')],
            [str_repeat("\x01", 24), pack('H*', '2000000000000000'), pack('H*', '2E8653104F3834EA')],
            [str_repeat("\x01", 24), pack('H*', '1000000000000000'), pack('H*', '4BD388FF6CD81D4F')],
            [str_repeat("\x01", 24), pack('H*', '0800000000000000'), pack('H*', '20B9E767B2FB1456')],
            [str_repeat("\x01", 24), pack('H*', '0400000000000000'), pack('H*', '55579380D77138EF')],
            [str_repeat("\x01", 24), pack('H*', '0200000000000000'), pack('H*', '6CC5DEFAAF04512F')],
            [str_repeat("\x01", 24), pack('H*', '0100000000000000'), pack('H*', '0D9F279BA5D87260')],
            [str_repeat("\x01", 24), pack('H*', '0080000000000000'), pack('H*', 'D9031B0271BD5A0A')],
            [str_repeat("\x01", 24), pack('H*', '0040000000000000'), pack('H*', '424250B37C3DD951')],
            [str_repeat("\x01", 24), pack('H*', '0020000000000000'), pack('H*', 'B8061B7ECD9A21E5')],
            [str_repeat("\x01", 24), pack('H*', '0010000000000000'), pack('H*', 'F15D0F286B65BD28')],
            [str_repeat("\x01", 24), pack('H*', '0008000000000000'), pack('H*', 'ADD0CC8D6E5DEBA1')],
            [str_repeat("\x01", 24), pack('H*', '0004000000000000'), pack('H*', 'E6D5F82752AD63D1')],
            [str_repeat("\x01", 24), pack('H*', '0002000000000000'), pack('H*', 'ECBFE3BD3F591A5E')],
            [str_repeat("\x01", 24), pack('H*', '0001000000000000'), pack('H*', 'F356834379D165CD')],
            [str_repeat("\x01", 24), pack('H*', '0000800000000000'), pack('H*', '2B9F982F20037FA9')],
            [str_repeat("\x01", 24), pack('H*', '0000400000000000'), pack('H*', '889DE068A16F0BE6')],
            [str_repeat("\x01", 24), pack('H*', '0000200000000000'), pack('H*', 'E19E275D846A1298')],
            [str_repeat("\x01", 24), pack('H*', '0000100000000000'), pack('H*', '329A8ED523D71AEC')],
            [str_repeat("\x01", 24), pack('H*', '0000080000000000'), pack('H*', 'E7FCE22557D23C97')],
            [str_repeat("\x01", 24), pack('H*', '0000040000000000'), pack('H*', '12A9F5817FF2D65D')],
            [str_repeat("\x01", 24), pack('H*', '0000020000000000'), pack('H*', 'A484C3AD38DC9C19')],
            [str_repeat("\x01", 24), pack('H*', '0000010000000000'), pack('H*', 'FBE00A8A1EF8AD72')],
            [str_repeat("\x01", 24), pack('H*', '0000008000000000'), pack('H*', '750D079407521363')],
            [str_repeat("\x01", 24), pack('H*', '0000004000000000'), pack('H*', '64FEED9C724C2FAF')],
            [str_repeat("\x01", 24), pack('H*', '0000002000000000'), pack('H*', 'F02B263B328E2B60')],
            [str_repeat("\x01", 24), pack('H*', '0000001000000000'), pack('H*', '9D64555A9A10B852')],
            [str_repeat("\x01", 24), pack('H*', '0000000800000000'), pack('H*', 'D106FF0BED5255D7')],
            [str_repeat("\x01", 24), pack('H*', '0000000400000000'), pack('H*', 'E1652C6B138C64A5')],
            [str_repeat("\x01", 24), pack('H*', '0000000200000000'), pack('H*', 'E428581186EC8F46')],
            [str_repeat("\x01", 24), pack('H*', '0000000100000000'), pack('H*', 'AEB5F5EDE22D1A36')],
            [str_repeat("\x01", 24), pack('H*', '0000000080000000'), pack('H*', 'E943D7568AEC0C5C')],
            [str_repeat("\x01", 24), pack('H*', '0000000040000000'), pack('H*', 'DF98C8276F54B04B')],
            [str_repeat("\x01", 24), pack('H*', '0000000020000000'), pack('H*', 'B160E4680F6C696F')],
            [str_repeat("\x01", 24), pack('H*', '0000000010000000'), pack('H*', 'FA0752B07D9C4AB8')],
            [str_repeat("\x01", 24), pack('H*', '0000000008000000'), pack('H*', 'CA3A2B036DBC8502')],
            [str_repeat("\x01", 24), pack('H*', '0000000004000000'), pack('H*', '5E0905517BB59BCF')],
            [str_repeat("\x01", 24), pack('H*', '0000000002000000'), pack('H*', '814EEB3B91D90726')],
            [str_repeat("\x01", 24), pack('H*', '0000000001000000'), pack('H*', '4D49DB1532919C9F')],
            [str_repeat("\x01", 24), pack('H*', '0000000000800000'), pack('H*', '25EB5FC3F8CF0621')],
            [str_repeat("\x01", 24), pack('H*', '0000000000400000'), pack('H*', 'AB6A20C0620D1C6F')],
            [str_repeat("\x01", 24), pack('H*', '0000000000200000'), pack('H*', '79E90DBC98F92CCA')],
            [str_repeat("\x01", 24), pack('H*', '0000000000100000'), pack('H*', '866ECEDD8072BB0E')],
            [str_repeat("\x01", 24), pack('H*', '0000000000080000'), pack('H*', '8B54536F2F3E64A8')],
            [str_repeat("\x01", 24), pack('H*', '0000000000040000'), pack('H*', 'EA51D3975595B86B')],
            [str_repeat("\x01", 24), pack('H*', '0000000000020000'), pack('H*', 'CAFFC6AC4542DE31')],
            [str_repeat("\x01", 24), pack('H*', '0000000000010000'), pack('H*', '8DD45A2DDF90796C')],
            [str_repeat("\x01", 24), pack('H*', '0000000000008000'), pack('H*', '1029D55E880EC2D0')],
            [str_repeat("\x01", 24), pack('H*', '0000000000004000'), pack('H*', '5D86CB23639DBEA9')],
            [str_repeat("\x01", 24), pack('H*', '0000000000002000'), pack('H*', '1D1CA853AE7C0C5F')],
            [str_repeat("\x01", 24), pack('H*', '0000000000001000'), pack('H*', 'CE332329248F3228')],
            [str_repeat("\x01", 24), pack('H*', '0000000000000800'), pack('H*', '8405D1ABE24FB942')],
            [str_repeat("\x01", 24), pack('H*', '0000000000000400'), pack('H*', 'E643D78090CA4207')],
            [str_repeat("\x01", 24), pack('H*', '0000000000000200'), pack('H*', '48221B9937748A23')],
            [str_repeat("\x01", 24), pack('H*', '0000000000000100'), pack('H*', 'DD7C0BBD61FAFD54')],
            [str_repeat("\x01", 24), pack('H*', '0000000000000080'), pack('H*', '2FBC291A570DB5C4')],
            [str_repeat("\x01", 24), pack('H*', '0000000000000040'), pack('H*', 'E07C30D7E4E26E12')],
            [str_repeat("\x01", 24), pack('H*', '0000000000000020'), pack('H*', '0953E2258E8E90A1')],
            [str_repeat("\x01", 24), pack('H*', '0000000000000010'), pack('H*', '5B711BC4CEEBF2EE')],
            [str_repeat("\x01", 24), pack('H*', '0000000000000008'), pack('H*', 'CC083F1E6D9E85F6')],
            [str_repeat("\x01", 24), pack('H*', '0000000000000004'), pack('H*', 'D2FD8867D50D2DFE')],
            [str_repeat("\x01", 24), pack('H*', '0000000000000002'), pack('H*', '06E7EA22CE92708F')],
            [str_repeat("\x01", 24), pack('H*', '0000000000000001'), pack('H*', '166B40B44ABA4BD6')]
        ];

        $result = [];

        foreach (self::$engines as $engine) {
            foreach ($tests as $test) {
                $result[] = [$engine, $test[0], $test[1], $test[2]];
            }
        }

        return $result;
    }

    /**
     * @dataProvider engineVectors
     */
    public function testVectors($engine, $key, $plaintext, $expected)
    {
        $des = new TripleDES('cbc');
        if (!$des->isValidEngine($engine)) {
            self::markTestSkipped("Unable to initialize $engine engine");
        }
        $des->setPreferredEngine($engine);
        $des->setKey($key);
        $des->setIV(str_repeat("\0", $des->getBlockLength() >> 3));
        $des->disablePadding();
        $result = $des->encrypt($plaintext);
        $plaintext = bin2hex($plaintext);
        $this->assertEquals($result, $expected, "Failed asserting that $plaintext yielded expected output in $engine engine");
    }

    public static function engineIVVectors()
    {
        $engines = [
            'PHP',
            'Eval',
            'mcrypt',
            'OpenSSL',
        ];

        // tests from http://csrc.nist.gov/groups/STM/cavp/documents/des/DESMMT.pdf
        $tests = [
            // key, iv, plaintext, ciphertext
            [
                pack('H*', '627f460e08104a10' . '43cd265d5840eaf1' . '313edf97df2a8a8c'),
                pack('H*', '8e29f75ea77e5475'),
                pack('H*', '326a494cd33fe756'),
                pack('H*', 'b22b8d66de970692')],
            [
                pack('H*', '37ae5ebf46dff2dc' . '0754b94f31cbb385' . '5e7fd36dc870bfae'),
                pack('H*', '3d1de3cc132e3b65'),
                pack('H*', '84401f78fe6c10876d8ea23094ea5309'),
                pack('H*', '7b1f7c7e3b1c948ebd04a75ffba7d2f5')]
        ];

        $result = [];

        foreach ($engines as $engine) {
            foreach ($tests as $test) {
                $result[] = [$engine, $test[0], $test[1], $test[2], $test[3]];
            }
        }

        return $result;
    }

    /**
     * @dataProvider engineIVVectors
     */
    public function testVectorsWithIV($engine, $key, $iv, $plaintext, $expected)
    {
        $des = new TripleDES('cbc');
        if (!$des->isValidEngine($engine)) {
            self::markTestSkipped("Unable to initialize $engine engine");
        }
        $des->setPreferredEngine($engine);
        $des->setKey($key);
        $des->setIV($iv);
        $des->disablePadding();
        $result = $des->encrypt($plaintext);
        $plaintext = bin2hex($plaintext);
        $this->assertEquals($result, $expected, "Failed asserting that $plaintext yielded expected output in $engine engine");
    }

    public function testInnerChaining()
    {
        // regular CBC returns
        //           e089b6d84708c6bc80be6c2da82bd19a79ffe11f02933ac1
        $expected = 'e089b6d84708c6bc6f04c8971121603d7be2861efae0f3f5';

        $des = new TripleDES('3cbc');
        $des->setKey('abcdefghijklmnopqrstuvwx');
        $des->setIV(str_repeat("\0", $des->getBlockLength() >> 3));

        foreach (self::$engines as $engine) {
            $des->setPreferredEngine($engine);
            if (!$des->isValidEngine($engine)) {
                self::markTestSkipped("Unable to initialize $engine engine");
            }
            $result = bin2hex($des->encrypt(str_repeat('a', 16)));
            $this->assertEquals($result, $expected, "Failed asserting inner chainin worked correctly in $engine engine");
        }
    }

    /**
     * @dataProvider provideForCorrectSelfUseInLambda
     * @param string $key
     * @param string $expectedCiphertext
     * @return void
     */
    public function testCorrectSelfUseInLambda($key, $expectedCiphertext)
    {
        $td = new TripleDES('ecb');
        $td->setPreferredEngine('Eval');
        $td->setKey(base64_decode($key));
        $ciphertext = $td->encrypt(str_repeat('a', 32));
        self::assertSame($expectedCiphertext, base64_encode($ciphertext));
    }

    /**
     * @return list<array{string, string}>
     */
    public static function provideForCorrectSelfUseInLambda()
    {
        return [
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWG9l9gm', 'fDSmC5bbLdx8NKYLltst3Hw0pguW2y3cfDSmC5bbLdxmhqEOIeS2ig=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWFhiyIR', 'pRE2q3y7s6ylETarfLuzrKURNqt8u7OspRE2q3y7s6wn4E6gffbNJw=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWFKOPlL', 'lnarcjmMu+OWdqtyOYy745Z2q3I5jLvjlnarcjmMu+NYSjvKzL2Osw=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWEfGesQ', 'VxvHOxYoHAJXG8c7FigcAlcbxzsWKBwCVxvHOxYoHAKu2gQBvhV4Qw=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWGeCuBh', 'dQZuvUeEemp1Bm69R4R6anUGbr1HhHpqdQZuvUeEempfXEWLEcWTYQ=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWHrg28q', 'vWcEQuwfYZC9ZwRC7B9hkL1nBELsH2GQvWcEQuwfYZChcIWy7Jx4AQ=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWE7VTFW', '5HfiS1TkD4Lkd+JLVOQPguR34ktU5A+C5HfiS1TkD4J7OjziCG84YA=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWHu6jQV', '0XOLOVBh3HXRc4s5UGHcddFzizlQYdx10XOLOVBh3HWAfZzoan7UNA=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWHBQqVh', '5sXLCUFzKCTmxcsJQXMoJObFywlBcygk5sXLCUFzKCQx78hr/rq4ww=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWElZYAM', 'i7hwXD3f/ziLuHBcPd//OIu4cFw93/84i7hwXD3f/zjYM/eL8sCkVQ=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWGiFRwF', '2ybIPpjRyufbJsg+mNHK59smyD6Y0crn2ybIPpjRyueUX5HLPHATqQ=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWFHDjMw', 'uhLr0mWFI4i6EuvSZYUjiLoS69JlhSOIuhLr0mWFI4hrCZ9vaOlmbg=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWGqlkgm', '9gjxyj6xL6z2CPHKPrEvrPYI8co+sS+s9gjxyj6xL6z1Swr5acgeOw=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWGFxv4E', 'wr+yhvXSmo7Cv7KG9dKajsK/sob10pqOwr+yhvXSmo5fTYtM7AM0Tg=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWHIuKFR', 'Ug35w2rztYhSDfnDavO1iFIN+cNq87WIUg35w2rztYgU5XzjwaRlbw=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWEvbSIB', '7lo0S11Kp6PuWjRLXUqno+5aNEtdSqej7lo0S11Kp6OX1cTbb6FyyA=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWEgD5wO', 'QF1VxM0jlm5AXVXEzSOWbkBdVcTNI5ZuQF1VxM0jlm6qoYnfJo67NQ=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWGBNnsp', 'ZFtpJzprc+9kW2knOmtz72RbaSc6a3PvZFtpJzprc++DKOgJXprsFQ=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWGbz7Zy', '6m3d0xNg5t/qbd3TE2Dm3+pt3dMTYObf6m3d0xNg5t+ddL6I8jfWYA=='],
            ['YWFhYWFhYWFhYWFhYWFhYWFhYWEijusc', 'R8guMW5IH1pHyC4xbkgfWkfILjFuSB9aR8guMW5IH1pDXTJwKiDKbA=='],
        ];
    }
}
