使用js来帮助加解密信息

//web框架
var express = require('express');
//body的解析工具
var bodyParser = require('body-parser');
var app = express();
var f = require('./decode')

//一些解析设置
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));

app.get('/', function (req, res) {
    res.send('Hello World!');
});

app.post('/', function (req, res) {
    //验证是不是合法的请求
    if (req.body.token === 'qwer') {
        data = f(req.body.param1, req.body.param2)
        res.send(data)
    } else {
        res.send('fuck you!');
    }
});

app.listen(3000, function () {
    console.log('Example app listening on port 3000!');
});

'use strict';

module.exports = function (data1, data2) {
    //补上的变量
    var len;
    var code;
    var i;
    var k;

    /** @type {string} */
    var encode_version = "sojson.v5";
    /** @type {string} */
    var lbbpm = "__0x33ad7";
    /** @type {!Array} */
    var __0x33ad7 = ["QMOTw6XDtVE=", "w5XDgsORw5LCuQ==", "wojDrWTChFU=", "dkdJACw=", "w6zDpXDDvsKVwqA=", "ZifCsh85fsKaXsOOWg==", "RcOvw47DghzDuA==", "w7siYTLCnw=="];
    (function (data, i) {
        /**
         * @param {number} isLE
         * @return {undefined}strencode
         */
        var write = function (isLE) {
            for (; --isLE;) {
                data["push"](data["shift"]());
            }
        };
        write(++i);
    })(__0x33ad7, 143);
    /**
     * @param {string} name
     * @param {string} ll
     * @return {?}
     */
    var _0x5b60 = function (name, ll) {
        /** @type {number} */
        name = name - 0;
        var result = __0x33ad7[name];
        if (_0x5b60["initialized"] === undefined) {
            (function () {
                var jid = typeof window !== "undefined" ? window : typeof process === "object" && typeof require === "function" && typeof global === "object" ? global : this;
                /** @type {string} */
                var listeners = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
                if (!jid["atob"]) {
                    /**
                     * @param {?} i
                     * @return {?}
                     */
                    jid["atob"] = function (i) {
                        var str = String(i)["replace"](/=+$/, "");
                        /** @type {number} */
                        var bc = 0;
                        var bs;
                        var buffer;
                        /** @type {number} */
                        var Y = 0;
                        /** @type {string} */
                        var pix_color = "";
                        for (; buffer = str["charAt"](Y++); ~buffer && (bs = bc % 4 ? bs * 64 + buffer : buffer, bc++ % 4) ? pix_color = pix_color + String["fromCharCode"](255 & bs >> (-2 * bc & 6)) : 0) {
                            buffer = listeners["indexOf"](buffer);
                        }
                        return pix_color;
                    };
                }
            })();
            /**
             * @param {string} data
             * @param {!Object} fn
             * @return {?}
             */
            var testcase = function (data, fn) {
                /** @type {!Array} */
                var secretKey = [];
                /** @type {number} */
                var y = 0;
                var temp;
                /** @type {string} */
                var testResult = "";
                /** @type {string} */
                var tempData = "";
                /** @type {string} */
                data = atob(data);
                /** @type {number} */
                var val = 0;
                var key = data["length"];
                for (; val < key; val++) {
                    /** @type {string} */
                    tempData = tempData + ("%" + ("00" + data["charCodeAt"](val)["toString"](16))["slice"](-2));
                }
                /** @type {string} */
                data = decodeURIComponent(tempData);
                /** @type {number} */
                var x = 0;
                for (; x < 256; x++) {
                    /** @type {number} */
                    secretKey[x] = x;
                }
                /** @type {number} */
                x = 0;
                for (; x < 256; x++) {
                    /** @type {number} */
                    y = (y + secretKey[x] + fn["charCodeAt"](x % fn["length"])) % 256;
                    temp = secretKey[x];
                    secretKey[x] = secretKey[y];
                    secretKey[y] = temp;
                }
                /** @type {number} */
                x = 0;
                /** @type {number} */
                y = 0;
                /** @type {number} */
                var i = 0;
                for (; i < data["length"]; i++) {
                    /** @type {number} */
                    x = (x + 1) % 256;
                    /** @type {number} */
                    y = (y + secretKey[x]) % 256;
                    temp = secretKey[x];
                    secretKey[x] = secretKey[y];
                    secretKey[y] = temp;
                    testResult = testResult + String["fromCharCode"](data["charCodeAt"](i) ^ secretKey[(secretKey[x] + secretKey[y]) % 256]);
                }
                return testResult;
            };
            /** @type {function(string, !Object): ?} */
            _0x5b60["rc4"] = testcase;
            _0x5b60["data"] = {};
            /** @type {boolean} */
            _0x5b60["initialized"] = !![];
        }
        var functionEntry = _0x5b60["data"][name];
        if (functionEntry === undefined) {
            if (_0x5b60["once"] === undefined) {
                /** @type {boolean} */
                _0x5b60["once"] = !![];
            }
            result = _0x5b60["rc4"](result, ll);
            _0x5b60["data"][name] = result;
        } else {
            result = functionEntry;
        }
        return result;
    };
    if (typeof encode_version !== "undefined" && encode_version === "sojson.v5") {
        /**
         * @param {?} key
         * @param {!Object} object
         * @return {?}
         */
        var strencode = function (key, object) {
            var self = {
                "MDWYS": "0|4|1|3|2",
                "uyGXL": function _cancelTransitioning(cb, TextureClass) {
                    return cb(TextureClass);
                },
                "otDTt": function handleSlide(isSlidingUp, $cont) {
                    return isSlidingUp < $cont;
                },
                "tPPtN": function handleSlide(isSlidingUp, $cont) {
                    return isSlidingUp % $cont;
                }
            };
            var callbackVals = self[_0x5b60("0x0", "cEiQ")][_0x5b60("0x1", "&]Gi")]("|");
            /** @type {number} */
            var callbackCount = 0;
            for (; !![];) {
                switch (callbackVals[callbackCount++]) {
                    case "0":
                        key = self[_0x5b60("0x2", "ofbL")](atob, key);
                        continue;
                    case "1":
                        /** @type {string} */
                        code = "";
                        continue;
                    case "2":
                        return self[_0x5b60("0x3", "mLzQ")](atob, code);
                    case "3":
                        /** @type {number} */
                        i = 0;
                        for (; self[_0x5b60("0x4", "J2rX")](i, key[_0x5b60("0x5", "Z(CX")]); i++) {
                            k = self["tPPtN"](i, len);
                            code = code + String["fromCharCode"](key[_0x5b60("0x6", "s4(u")](i) ^ object["charCodeAt"](k));
                        }
                        continue;
                    case "4":
                        len = object[_0x5b60("0x7", "!Mys")];
                        continue;
                }
                break;
            }
        };
    } else {
        alert("");
    }
    ;
    return strencode(data1, data2)
}