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DouyinWebSign

DouyinWebSign Utils

สคริปต์นี้ไม่ควรถูกติดตั้งโดยตรง มันเป็นคลังสำหรับสคริปต์อื่น ๆ เพื่อบรรจุด้วยคำสั่งเมทา // @require https://update.greasyfork.org/scripts/513451/1468972/DouyinWebSign.js 

// ==UserScript==
// @name         DouyinWebSign
// @namespace    douyin-web-sign
// @version      1.0.0
// @description  DouyinWebSign Utils
// @author       Dong <[email protected]>
// @match        https://*.douyin.com/*
// @include      *
// @license      MIT
// ==/UserScript==

var DouyinWebSign = (function (exports) {
    // All the content in this article is only for learning and communication use, not for any other purpose, strictly prohibited for commercial use and illegal use, otherwise all the consequences are irrelevant to the author!
    function rc4_encrypt(plaintext, key) {
        var s = [];
        for (var i = 0; i < 256; i++) {
            s[i] = i;
        }
        var j = 0;
        for (var i = 0; i < 256; i++) {
            j = (j + s[i] + key.charCodeAt(i % key.length)) % 256;
            var temp = s[i];
            s[i] = s[j];
            s[j] = temp;
        }

        var i = 0;
        var j = 0;
        var cipher = [];
        for (var k = 0; k < plaintext.length; k++) {
            i = (i + 1) % 256;
            j = (j + s[i]) % 256;
            var temp = s[i];
            s[i] = s[j];
            s[j] = temp;
            var t = (s[i] + s[j]) % 256;
            cipher.push(String.fromCharCode(s[t] ^ plaintext.charCodeAt(k)));
        }
        return cipher.join('');
    }

    function le(e, r) {
        return (e << (r %= 32) | e >>> 32 - r) >>> 0
    }

    function de(e) {
        return 0 <= e && e < 16 ? 2043430169 : 16 <= e && e < 64 ? 2055708042 : void console['error']("invalid j for constant Tj")
    }

    function pe(e, r, t, n) {
        return 0 <= e && e < 16 ? (r ^ t ^ n) >>> 0 : 16 <= e && e < 64 ? (r & t | r & n | t & n) >>> 0 : (console['error']('invalid j for bool function FF'),
            0)
    }

    function he(e, r, t, n) {
        return 0 <= e && e < 16 ? (r ^ t ^ n) >>> 0 : 16 <= e && e < 64 ? (r & t | ~r & n) >>> 0 : (console['error']('invalid j for bool function GG'),
            0)
    }

    function reset() {
        this.reg[0] = 1937774191,
            this.reg[1] = 1226093241,
            this.reg[2] = 388252375,
            this.reg[3] = 3666478592,
            this.reg[4] = 2842636476,
            this.reg[5] = 372324522,
            this.reg[6] = 3817729613,
            this.reg[7] = 2969243214,
            this["chunk"] = [],
            this["size"] = 0
    }

    function write(e) {
        var a = "string" == typeof e ? function (e) {
            n = encodeURIComponent(e)['replace'](/%([0-9A-F]{2})/g, (function (e, r) {
                    return String['fromCharCode']("0x" + r)
                }
            ))
                , a = new Array(n['length']);
            return Array['prototype']['forEach']['call'](n, (function (e, r) {
                    a[r] = e.charCodeAt(0)
                }
            )),
                a
        }(e) : e;
        this.size += a.length;
        var f = 64 - this['chunk']['length'];
        if (a['length'] < f)
            this['chunk'] = this['chunk'].concat(a);
        else
            for (this['chunk'] = this['chunk'].concat(a.slice(0, f)); this['chunk'].length >= 64;)
                this['_compress'](this['chunk']),
                    f < a['length'] ? this['chunk'] = a['slice'](f, Math['min'](f + 64, a['length'])) : this['chunk'] = [],
                    f += 64
    }

    function sum(e, t) {
        e && (this['reset'](),
            this['write'](e)),
            this['_fill']();
        for (var f = 0; f < this.chunk['length']; f += 64)
            this._compress(this['chunk']['slice'](f, f + 64));
        var i = null;
        if (t == 'hex') {
            i = "";
            for (f = 0; f < 8; f++)
                i += se(this['reg'][f]['toString'](16), 8, "0")
        } else
            for (i = new Array(32),
                    f = 0; f < 8; f++) {
                var c = this.reg[f];
                i[4 * f + 3] = (255 & c) >>> 0,
                    c >>>= 8,
                    i[4 * f + 2] = (255 & c) >>> 0,
                    c >>>= 8,
                    i[4 * f + 1] = (255 & c) >>> 0,
                    c >>>= 8,
                    i[4 * f] = (255 & c) >>> 0
            }
        return this['reset'](),
            i
    }

    function _compress(t) {
        if (t < 64)
            console.error("compress error: not enough data");
        else {
            for (var f = function (e) {
                for (var r = new Array(132), t = 0; t < 16; t++)
                    r[t] = e[4 * t] << 24,
                        r[t] |= e[4 * t + 1] << 16,
                        r[t] |= e[4 * t + 2] << 8,
                        r[t] |= e[4 * t + 3],
                        r[t] >>>= 0;
                for (var n = 16; n < 68; n++) {
                    var a = r[n - 16] ^ r[n - 9] ^ le(r[n - 3], 15);
                    a = a ^ le(a, 15) ^ le(a, 23),
                        r[n] = (a ^ le(r[n - 13], 7) ^ r[n - 6]) >>> 0
                }
                for (n = 0; n < 64; n++)
                    r[n + 68] = (r[n] ^ r[n + 4]) >>> 0;
                return r
            }(t), i = this['reg'].slice(0), c = 0; c < 64; c++) {
                var o = le(i[0], 12) + i[4] + le(de(c), c)
                    , s = ((o = le(o = (4294967295 & o) >>> 0, 7)) ^ le(i[0], 12)) >>> 0
                    , u = pe(c, i[0], i[1], i[2]);
                u = (4294967295 & (u = u + i[3] + s + f[c + 68])) >>> 0;
                var b = he(c, i[4], i[5], i[6]);
                b = (4294967295 & (b = b + i[7] + o + f[c])) >>> 0,
                    i[3] = i[2],
                    i[2] = le(i[1], 9),
                    i[1] = i[0],
                    i[0] = u,
                    i[7] = i[6],
                    i[6] = le(i[5], 19),
                    i[5] = i[4],
                    i[4] = (b ^ le(b, 9) ^ le(b, 17)) >>> 0
            }
            for (var l = 0; l < 8; l++)
                this['reg'][l] = (this['reg'][l] ^ i[l]) >>> 0
        }
    }

    function _fill() {
        var a = 8 * this['size']
            , f = this['chunk']['push'](128) % 64;
        for (64 - f < 8 && (f -= 64); f < 56; f++)
            this.chunk['push'](0);
        for (var i = 0; i < 4; i++) {
            var c = Math['floor'](a / 4294967296);
            this['chunk'].push(c >>> 8 * (3 - i) & 255)
        }
        for (i = 0; i < 4; i++)
            this['chunk']['push'](a >>> 8 * (3 - i) & 255)

    }

    function SM3() {
        this.reg = [];
        this.chunk = [];
        this.size = 0;
        this.reset()
    }
    SM3.prototype.reset = reset;
    SM3.prototype.write = write;
    SM3.prototype.sum = sum;
    SM3.prototype._compress = _compress;
    SM3.prototype._fill = _fill;

    function result_encrypt(long_str, num = null) {
        let s_obj = {
            "s0": "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
            "s1": "Dkdpgh4ZKsQB80/Mfvw36XI1R25+WUAlEi7NLboqYTOPuzmFjJnryx9HVGcaStCe=",
            "s2": "Dkdpgh4ZKsQB80/Mfvw36XI1R25-WUAlEi7NLboqYTOPuzmFjJnryx9HVGcaStCe=",
            "s3": "ckdp1h4ZKsUB80/Mfvw36XIgR25+WQAlEi7NLboqYTOPuzmFjJnryx9HVGDaStCe",
            "s4": "Dkdpgh2ZmsQB80/MfvV36XI1R45-WUAlEixNLwoqYTOPuzKFjJnry79HbGcaStCe"
        }
        let constant = {
            "0": 16515072,
            "1": 258048,
            "2": 4032,
            "str": s_obj[num],
        }

        let result = "";
        let lound = 0;
        let long_int = get_long_int(lound, long_str);
        for (let i = 0; i < long_str.length / 3 * 4; i++) {
            if (Math.floor(i / 4) !== lound) {
                lound += 1;
                long_int = get_long_int(lound, long_str);
            }
            let key = i % 4;
            switch (key) {
                case 0:
                    temp_int = (long_int & constant["0"]) >> 18;
                    result += constant["str"].charAt(temp_int);
                    break;
                case 1:
                    temp_int = (long_int & constant["1"]) >> 12;
                    result += constant["str"].charAt(temp_int);
                    break;
                case 2:
                    temp_int = (long_int & constant["2"]) >> 6;
                    result += constant["str"].charAt(temp_int);
                    break;
                case 3:
                    temp_int = long_int & 63;
                    result += constant["str"].charAt(temp_int);
                    break;
                default:
                    break;
            }
        }
        return result;
    }

    function get_long_int(round, long_str) {
        round = round * 3;
        return (long_str.charCodeAt(round) << 16) | (long_str.charCodeAt(round + 1) << 8) | (long_str.charCodeAt(round + 2));
    }

    function gener_random(random, option) {
        return [
            (random & 255 & 170) | option[0] & 85, // 163
            (random & 255 & 85) | option[0] & 170, //87
            (random >> 8 & 255 & 170) | option[1] & 85, //37
            (random >> 8 & 255 & 85) | option[1] & 170, //41
        ]
    }

    //////////////////////////////////////////////
    function generate_rc4_bb_str(url_search_params, user_agent, window_env_str, suffix = "cus", Arguments = [0, 1, 14]) {
        let sm3 = new SM3()
        let start_time = Date.now()
        /**
         * 进行3次加密处理
         * 1: url_search_params两次sm3之的结果
         * 2: 对后缀两次sm3之的结果
         * 3: 对ua处理之后的结果
         */
            // url_search_params两次sm3之的结果
        let url_search_params_list = sm3.sum(sm3.sum(url_search_params + suffix))
        // 对后缀两次sm3之的结果
        let cus = sm3.sum(sm3.sum(suffix))
        // 对ua处理之后的结果
        let ua = sm3.sum(result_encrypt(rc4_encrypt(user_agent, String.fromCharCode.apply(null, [0.00390625, 1, 14])), "s3"))
        //
        let end_time = Date.now()
        // b
        let b = {
            8: 3, // 固定
            10: end_time, //3次加密结束时间
            15: {
                "aid": 6383,
                "pageId": 6241,
                "boe": false,
                "ddrt": 7,
                "paths": {
                    "include": [
                        {},
                        {},
                        {},
                        {},
                        {},
                        {},
                        {}
                    ],
                    "exclude": []
                },
                "track": {
                    "mode": 0,
                    "delay": 300,
                    "paths": []
                },
                "dump": true,
                "rpU": ""
            },
            16: start_time, //3次加密开始时间
            18: 44, //固定
            19: [1, 0, 1, 5],
        }

        //3次加密开始时间
        b[20] = (b[16] >> 24) & 255
        b[21] = (b[16] >> 16) & 255
        b[22] = (b[16] >> 8) & 255
        b[23] = b[16] & 255
        b[24] = (b[16] / 256 / 256 / 256 / 256) >> 0
        b[25] = (b[16] / 256 / 256 / 256 / 256 / 256) >> 0

        // 参数Arguments [0, 1, 14, ...]
        // let Arguments = [0, 1, 14]
        b[26] = (Arguments[0] >> 24) & 255
        b[27] = (Arguments[0] >> 16) & 255
        b[28] = (Arguments[0] >> 8) & 255
        b[29] = Arguments[0] & 255

        b[30] = (Arguments[1] / 256) & 255
        b[31] = (Arguments[1] % 256) & 255
        b[32] = (Arguments[1] >> 24) & 255
        b[33] = (Arguments[1] >> 16) & 255

        b[34] = (Arguments[2] >> 24) & 255
        b[35] = (Arguments[2] >> 16) & 255
        b[36] = (Arguments[2] >> 8) & 255
        b[37] = Arguments[2] & 255

        // (url_search_params + "cus") 两次sm3之的结果
        /**let url_search_params_list = [
         91, 186,  35,  86, 143, 253,   6,  76,
        34,  21, 167, 148,   7,  42, 192, 219,
        188,  20, 182,  85, 213,  74, 213, 147,
        37, 155,  93, 139,  85, 118, 228, 213
        ]*/
        b[38] = url_search_params_list[21]
        b[39] = url_search_params_list[22]

        // ("cus") 对后缀两次sm3之的结果
        /**
         * let cus = [
         136, 101, 114, 147,  58,  77, 207, 201,
        215, 162, 154,  93, 248,  13, 142, 160,
        105,  73, 215, 241,  83,  58,  51,  43,
        255,  38, 168, 141, 216, 194,  35, 236
        ]*/
        b[40] = cus[21]
        b[41] = cus[22]

        // 对ua处理之后的结果
        /**
         * let ua = [
         129, 190,  70, 186,  86, 196, 199,  53,
        99,  38,  29, 209, 243,  17, 157,  69,
        147, 104,  53,  23, 114, 126,  66, 228,
        135,  30, 168, 185, 109, 156, 251,  88
        ]*/
        b[42] = ua[23]
        b[43] = ua[24]

        //3次加密结束时间
        b[44] = (b[10] >> 24) & 255
        b[45] = (b[10] >> 16) & 255
        b[46] = (b[10] >> 8) & 255
        b[47] = b[10] & 255
        b[48] = b[8]
        b[49] = (b[10] / 256 / 256 / 256 / 256) >> 0
        b[50] = (b[10] / 256 / 256 / 256 / 256 / 256) >> 0


        // object配置项
        b[51] = b[15]['pageId']
        b[52] = (b[15]['pageId'] >> 24) & 255
        b[53] = (b[15]['pageId'] >> 16) & 255
        b[54] = (b[15]['pageId'] >> 8) & 255
        b[55] = b[15]['pageId'] & 255

        b[56] = b[15]['aid']
        b[57] = b[15]['aid'] & 255
        b[58] = (b[15]['aid'] >> 8) & 255
        b[59] = (b[15]['aid'] >> 16) & 255
        b[60] = (b[15]['aid'] >> 24) & 255

        // 中间进行了环境检测
        // 代码索引:  2496 索引值:  17 （索引64关键条件）
        // '1536|747|1536|834|0|30|0|0|1536|834|1536|864|1525|747|24|24|Win32'.charCodeAt()得到65位数组
        /**
         * let window_env_list = [49, 53, 51, 54, 124, 55, 52, 55, 124, 49, 53, 51, 54, 124, 56, 51, 52, 124, 48, 124, 51,
         * 48, 124, 48, 124, 48, 124, 49, 53, 51, 54, 124, 56, 51, 52, 124, 49, 53, 51, 54, 124, 56,
         * 54, 52, 124, 49, 53, 50, 53, 124, 55, 52, 55, 124, 50, 52, 124, 50, 52, 124, 87, 105, 110,
         * 51, 50]
         */
        let window_env_list = [];
        for (let index = 0; index < window_env_str.length; index++) {
            window_env_list.push(window_env_str.charCodeAt(index))
        }
        b[64] = window_env_list.length
        b[65] = b[64] & 255
        b[66] = (b[64] >> 8) & 255

        b[69] = [].length
        b[70] = b[69] & 255
        b[71] = (b[69] >> 8) & 255

        b[72] = b[18] ^ b[20] ^ b[26] ^ b[30] ^ b[38] ^ b[40] ^ b[42] ^ b[21] ^ b[27] ^ b[31] ^ b[35] ^ b[39] ^ b[41] ^ b[43] ^ b[22] ^
            b[28] ^ b[32] ^ b[36] ^ b[23] ^ b[29] ^ b[33] ^ b[37] ^ b[44] ^ b[45] ^ b[46] ^ b[47] ^ b[48] ^ b[49] ^ b[50] ^ b[24] ^
            b[25] ^ b[52] ^ b[53] ^ b[54] ^ b[55] ^ b[57] ^ b[58] ^ b[59] ^ b[60] ^ b[65] ^ b[66] ^ b[70] ^ b[71]
        let bb = [
            b[18], b[20], b[52], b[26], b[30], b[34], b[58], b[38], b[40], b[53], b[42], b[21], b[27], b[54], b[55], b[31],
            b[35], b[57], b[39], b[41], b[43], b[22], b[28], b[32], b[60], b[36], b[23], b[29], b[33], b[37], b[44], b[45],
            b[59], b[46], b[47], b[48], b[49], b[50], b[24], b[25], b[65], b[66], b[70], b[71]
        ]
        bb = bb.concat(window_env_list).concat(b[72])
        return rc4_encrypt(String.fromCharCode.apply(null, bb), String.fromCharCode.apply(null, [121]));
    }

    function generate_random_str() {
        let random_str_list = []
        random_str_list = random_str_list.concat(gener_random(Math.random() * 10000, [3, 45]))
        random_str_list = random_str_list.concat(gener_random(Math.random() * 10000, [1, 0]))
        random_str_list = random_str_list.concat(gener_random(Math.random() * 10000, [1, 5]))
        return String.fromCharCode.apply(null, random_str_list)
    }

    function generate_a_bogus(url_search_params, user_agent) {
        /**
         * url_search_params："device_platform=webapp&aid=6383&channel=channel_pc_web&update_version_code=170400&pc_client_type=1&version_code=170400&version_name=17.4.0&cookie_enabled=true&screen_width=1536&screen_height=864&browser_language=zh-CN&browser_platform=Win32&browser_name=Chrome&browser_version=123.0.0.0&browser_online=true&engine_name=Blink&engine_version=123.0.0.0&os_name=Windows&os_version=10&cpu_core_num=16&device_memory=8&platform=PC&downlink=10&effective_type=4g&round_trip_time=50&webid=7362810250930783783&msToken=VkDUvz1y24CppXSl80iFPr6ez-3FiizcwD7fI1OqBt6IICq9RWG7nCvxKb8IVi55mFd-wnqoNkXGnxHrikQb4PuKob5Q-YhDp5Um215JzlBszkUyiEvR"
         * user_agent："Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36"
         */
        let result_str = generate_random_str() + generate_rc4_bb_str(
            url_search_params,
            user_agent,
            "1536|747|1536|834|0|30|0|0|1536|834|1536|864|1525|747|24|24|Win32"
        );
        return result_encrypt(result_str, "s4") + "=";
    }

    function getABogus(url, user_agent) {
        if (url.includes('https://')) {
            url = new URLSearchParams(new URL(url).search).toString()
        }
        !user_agent ? user_agent = navigator.userAgent : user_agent
        return generate_a_bogus(url, user_agent)
    }

    function getVerifyFp() {
        var e = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".split("")
        , t = e.length
        , r = new Date().getTime().toString(36)
        , n = [];
        n[8] = n[13] = n[18] = n[23] = "_",
        n[14] = "4";
        for (var o = 0, i = void 0; o < 36; o++)
            n[o] || (i = 0 | Math.random() * t,
            n[o] = e[19 == o ? 3 & i | 8 : i]);
        return "verify_" + r + "_" + n.join("")
    }

    function getRandomString(len) {
        let _charStr = 'abacdefghjklmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUVWXYZ0123456789',
            min = 0,
            max = _charStr.length - 1,
            _str = '';                    //定义随机字符串 变量
        //判断是否指定长度，否则默认长度为15
        len = len || 15;
        //循环生成字符串
        for (var i = 0, index; i < len; i++) {
            index = (function (randomIndexFunc, i) {
                return randomIndexFunc(min, max, i, randomIndexFunc);
            })(function (min, max, i, _self) {
                let indexTemp = Math.floor(Math.random() * (max - min + 1) + min),
                    numStart = _charStr.length - 10;
                if (i == 0 && indexTemp >= numStart) {
                    indexTemp = _self(min, max, i, _self);
                }
                return indexTemp;
            }, i);
            _str += _charStr[index];
        }
        return _str;
    }

    exports.getABogus = getABogus;
    exports.getVerifyFp = getVerifyFp;
    exports.getRandomString = getRandomString;
    return exports;
})({});