反爬机制_反爬虫机制 - CSDN
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  • 常见的反爬机制

    2020-04-28 15:17:15
    常见的基础反爬 1、Headers反爬虫 :Cookie、Referer、User-Agent 解决方案: 通过F12获取headers,传给requests.get()方法 2、IP限制 :网站根据IP地址访问频率进行反爬,短时间内进制IP访问 解决方案: 1、构造...

    常见的基础反爬

    1、Headers反爬虫 :Cookie、Referer、User-Agent   
    解决方案: 通过F12获取headers,传给requests.get()方法        
    
    2、IP限制 :网站根据IP地址访问频率进行反爬,短时间内进制IP访问   
    解决方案:         
    	1、构造自己IP代理池,每次访问随机选择代理,经常更新代理池        
    	2、购买开放代理或私密代理IP        
    	3、降低爬取的速度        
    
    3、User-Agent限制 :类似于IP限制   
    解决方案: 构造自己的User-Agent池,每次访问随机选择(或者使用python库生成User—Agent)        
    
    4、Ajax动态加载 :从url加载网页的源代码后,会在浏览器执行JavaScript程序,这些程序会加载更多内容   
    解决方案: F12或抓包工具抓包处理
     
    5、对查询参数加密   
    解决方案: 找到JS文件,分析加密算法,用Python实现加密执行JS文件中的代码,返回加密数据        
    
    6、对响应内容做处理   
    解决方案: 打印并查看响应内容,用xpath或正则做处理
    
    7、js加密 时间戳 加密算法等等
    解决方案:查看源代码做相应操作
    
    展开全文
  • 反爬机制

    2019-09-29 19:49:59
    目前了解到的反爬机制:1、robots 2、US伪装 3、代理 4、Cookie 5、动态变化的请求参数 6、验证码 7、图片懒加载 8、页面动态加载的数据 9、js混淆 10、js加密 案例:气象站动态js数据爬取 import ...

    总结篇~~~

    目前了解到的反爬机制:
    1、robots

    2、US伪装

    3、代理

    4、Cookie

    5、动态变化的请求参数

    6、验证码

    7、图片懒加载

    8、页面动态加载的数据

    9、js混淆

    10、js加密

     

    案例:气象站动态js数据爬取

    import requests
    import execjs
    import json
    
    """
    - https://www.aqistudy.cn/html/city_detail.html
    - 分析1:通过抓包发现页面中的数据是动态(ajax)加载出来的,可以捕获到ajax数据包对应的请求(post),请求的url可以捕获到,但是请求参数d对应的数据是动态变化且加密的数据。然后响应回来的数据也是经过加密。
    
    - 可以通过火狐浏览器找出查询/搜索按钮绑定的事件(click),通过事件可以定位到一个getData的js函数。查询/搜索按钮点击之后getData函数被调用了。
    - getData函数实现的分析:
        - 在函数实现内部没有直接的ajax请求相关的操作,但是发现了另外两个函数的调用 getWeatherData(); getAQIData();这两个函数实现中会存有ajax请求相关操作。
    
    - 分析:getWeatherData()和getAQIData()内部的实现也没有直观的看到ajax请求的操作,但是这两个函数都调用了getServerData这个函数。并且给该函数传递的参数有:
        - method:'GETDETAIL'  or 'GETCITYWEATHER'。
        - param字典(object):
            - city
            - type = ‘HOUR’
            - startTime
            - endTime
    
    - 分析getServerData函数的实现:
        - 我们在抓包工具中做全局搜索,搜到了该函数的实现,不过该函数的实现是经过了JS混淆(js源码的加密),我们必须经过反混淆后才可以看到js源码。
        - 在该函数中终于找到了ajax请求对应的代码。
    
        - ajax发起的是post请求,请求参数d是由getParam(method, object);进行的返回。
        - decodeData(data)函数就是将加密后的响应数据进行解密,将原文进行返回。
    
    - 上述分析出的重要的相关函数都是js函数,python是无法直接运行js代码的,但是可以使用相关的模块模拟执行js代码。
        - PyExecJS介绍:PyExecJS 是一个可以使用 Python 来模拟运行 JavaScript 的库。我们需要pip install PyExecJS对其进行环境安装。
        
        - execjs在使用的前提是需要安装好nodeJS环境  !!!!!
    """
    
    node = execjs.get()
    
    # Params
    method = 'GETCITYWEATHER'  # GETDETAIL or GETCITYWEATHER
    city = '西安'
    type = 'HOUR'
    start_time = '2019-08-08 00:00:00'
    end_time = '2019-08-08 23:00:00'
    
    # Compile javascript
    file = 'jsCode.js'
    ctx = node.compile(open(file, encoding='utf-8').read())
    
    # Get params
    js = 'getPostParamCode("{0}", "{1}", "{2}", "{3}", "{4}")'.format(method, city, type, start_time, end_time)
    params = ctx.eval(js)
    
    url = 'https://www.aqistudy.cn/apinew/aqistudyapi.php'
    
    data = {'d': params}
    
    page_text = requests.post(url=url, data=data).text
    
    js = 'decodeData("{0}")'.format(page_text)
    decrypted_data = ctx.eval(js)
    print(json.loads(decrypted_data))
    function Base64() {
        _2 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=", this.encode = function(a) {
            var c, d, e, f, g, h, i, b = "",
                j = 0;
            for (a = _29(a); j < a.length;) c = a.charCodeAt(j++), d = a.charCodeAt(j++), e = a.charCodeAt(j++), f = c >> 2, g = (3 & c) << 4 | d >> 4, h = (15 & d) << 2 | e >> 6, i = 63 & e, isNaN(d) ? h = i = 64 : isNaN(e) && (i = 64), b = b + _2.charAt(f) + _2.charAt(g) + _2.charAt(h) + _2.charAt(i);
            return b
        }, this.decode = function(a) {
            var c, d, e, f, g, h, i, b = "",
                j = 0;
            for (a = a.replace(/[^A-Za-z0-9\+\/\=]/g, ""); j < a.length;) f = _2.indexOf(a.charAt(j++)), g = _2.indexOf(a.charAt(j++)), h = _2.indexOf(a.charAt(j++)), i = _2.indexOf(a.charAt(j++)), c = f << 2 | g >> 4, d = (15 & g) << 4 | h >> 2, e = (3 & h) << 6 | i, b += String.fromCharCode(c), 64 != h && (b += String.fromCharCode(d)), 64 != i && (b += String.fromCharCode(e));
            return b = _27(b)
        }, _29 = function(a) {
            var b, c, d;
            for (a = a.replace(/\r\n/g, "\n"), b = "", c = 0; c < a.length; c++) d = a.charCodeAt(c), 128 > d ? b += String.fromCharCode(d) : d > 127 && 2048 > d ? (b += String.fromCharCode(192 | d >> 6), b += String.fromCharCode(128 | 63 & d)) : (b += String.fromCharCode(224 | d >> 12), b += String.fromCharCode(128 | 63 & d >> 6), b += String.fromCharCode(128 | 63 & d));
            return b
        }, _27 = function(a) {
            for (var b = "", c = 0, d = c1 = c2 = 0; c < a.length;) d = a.charCodeAt(c), 128 > d ? (b += String.fromCharCode(d), c++) : d > 191 && 224 > d ? (c2 = a.charCodeAt(c + 1), b += String.fromCharCode((31 & d) << 6 | 63 & c2), c += 2) : (c2 = a.charCodeAt(c + 1), c3 = a.charCodeAt(c + 2), b += String.fromCharCode((15 & d) << 12 | (63 & c2) << 6 | 63 & c3), c += 3);
            return b
        }
    }
    
    function hex_md5(a) {
        return binl2hex(core_md5(str2binl(a), a.length * chrsz))
    }
    
    function b64_md5(a) {
        return binl2b64(core_md5(str2binl(a), a.length * chrsz))
    }
    
    function str_md5(a) {
        return binl2str(core_md5(str2binl(a), a.length * chrsz))
    }
    
    function hex_hmac_md5(a, b) {
        return binl2hex(core_hmac_md5(a, b))
    }
    
    function b64_hmac_md5(a, b) {
        return binl2b64(core_hmac_md5(a, b))
    }
    
    function str_hmac_md5(a, b) {
        return binl2str(core_hmac_md5(a, b))
    }
    
    function md5_vm_test() {
        return "900150983cd24fb0d6963f7d28e17f72" == hex_md5("abc")
    }
    
    function core_md5(a, b) {
        var c, d, e, f, g, h, i, j, k;
        for (a[b >> 5] |= 128 << b % 32, a[(b + 64 >>> 9 << 4) + 14] = b, c = 1732584193, d = -271733879, e = -1732584194, f = 271733878, g = 0; g < a.length; g += 16) h = c, i = d, j = e, k = f, c = md5_ff(c, d, e, f, a[g + 0], 7, -680876936), f = md5_ff(f, c, d, e, a[g + 1], 12, -389564586), e = md5_ff(e, f, c, d, a[g + 2], 17, 606105819), d = md5_ff(d, e, f, c, a[g + 3], 22, -1044525330), c = md5_ff(c, d, e, f, a[g + 4], 7, -176418897), f = md5_ff(f, c, d, e, a[g + 5], 12, 1200080426), e = md5_ff(e, f, c, d, a[g + 6], 17, -1473231341), d = md5_ff(d, e, f, c, a[g + 7], 22, -45705983), c = md5_ff(c, d, e, f, a[g + 8], 7, 1770035416), f = md5_ff(f, c, d, e, a[g + 9], 12, -1958414417), e = md5_ff(e, f, c, d, a[g + 10], 17, -42063), d = md5_ff(d, e, f, c, a[g + 11], 22, -1990404162), c = md5_ff(c, d, e, f, a[g + 12], 7, 1804603682), f = md5_ff(f, c, d, e, a[g + 13], 12, -40341101), e = md5_ff(e, f, c, d, a[g + 14], 17, -1502002290), d = md5_ff(d, e, f, c, a[g + 15], 22, 1236535329), c = md5_gg(c, d, e, f, a[g + 1], 5, -165796510), f = md5_gg(f, c, d, e, a[g + 6], 9, -1069501632), e = md5_gg(e, f, c, d, a[g + 11], 14, 643717713), d = md5_gg(d, e, f, c, a[g + 0], 20, -373897302), c = md5_gg(c, d, e, f, a[g + 5], 5, -701558691), f = md5_gg(f, c, d, e, a[g + 10], 9, 38016083), e = md5_gg(e, f, c, d, a[g + 15], 14, -660478335), d = md5_gg(d, e, f, c, a[g + 4], 20, -405537848), c = md5_gg(c, d, e, f, a[g + 9], 5, 568446438), f = md5_gg(f, c, d, e, a[g + 14], 9, -1019803690), e = md5_gg(e, f, c, d, a[g + 3], 14, -187363961), d = md5_gg(d, e, f, c, a[g + 8], 20, 1163531501), c = md5_gg(c, d, e, f, a[g + 13], 5, -1444681467), f = md5_gg(f, c, d, e, a[g + 2], 9, -51403784), e = md5_gg(e, f, c, d, a[g + 7], 14, 1735328473), d = md5_gg(d, e, f, c, a[g + 12], 20, -1926607734), c = md5_hh(c, d, e, f, a[g + 5], 4, -378558), f = md5_hh(f, c, d, e, a[g + 8], 11, -2022574463), e = md5_hh(e, f, c, d, a[g + 11], 16, 1839030562), d = md5_hh(d, e, f, c, a[g + 14], 23, -35309556), c = md5_hh(c, d, e, f, a[g + 1], 4, -1530992060), f = md5_hh(f, c, d, e, a[g + 4], 11, 1272893353), e = md5_hh(e, f, c, d, a[g + 7], 16, -155497632), d = md5_hh(d, e, f, c, a[g + 10], 23, -1094730640), c = md5_hh(c, d, e, f, a[g + 13], 4, 681279174), f = md5_hh(f, c, d, e, a[g + 0], 11, -358537222), e = md5_hh(e, f, c, d, a[g + 3], 16, -722521979), d = md5_hh(d, e, f, c, a[g + 6], 23, 76029189), c = md5_hh(c, d, e, f, a[g + 9], 4, -640364487), f = md5_hh(f, c, d, e, a[g + 12], 11, -421815835), e = md5_hh(e, f, c, d, a[g + 15], 16, 530742520), d = md5_hh(d, e, f, c, a[g + 2], 23, -995338651), c = md5_ii(c, d, e, f, a[g + 0], 6, -198630844), f = md5_ii(f, c, d, e, a[g + 7], 10, 1126891415), e = md5_ii(e, f, c, d, a[g + 14], 15, -1416354905), d = md5_ii(d, e, f, c, a[g + 5], 21, -57434055), c = md5_ii(c, d, e, f, a[g + 12], 6, 1700485571), f = md5_ii(f, c, d, e, a[g + 3], 10, -1894986606), e = md5_ii(e, f, c, d, a[g + 10], 15, -1051523), d = md5_ii(d, e, f, c, a[g + 1], 21, -2054922799), c = md5_ii(c, d, e, f, a[g + 8], 6, 1873313359), f = md5_ii(f, c, d, e, a[g + 15], 10, -30611744), e = md5_ii(e, f, c, d, a[g + 6], 15, -1560198380), d = md5_ii(d, e, f, c, a[g + 13], 21, 1309151649), c = md5_ii(c, d, e, f, a[g + 4], 6, -145523070), f = md5_ii(f, c, d, e, a[g + 11], 10, -1120210379), e = md5_ii(e, f, c, d, a[g + 2], 15, 718787259), d = md5_ii(d, e, f, c, a[g + 9], 21, -343485551), c = safe_add(c, h), d = safe_add(d, i), e = safe_add(e, j), f = safe_add(f, k);
        return Array(c, d, e, f)
    }
    
    function md5_cmn(a, b, c, d, e, f) {
        return safe_add(bit_rol(safe_add(safe_add(b, a), safe_add(d, f)), e), c)
    }
    
    function md5_ff(a, b, c, d, e, f, g) {
        return md5_cmn(b & c | ~b & d, a, b, e, f, g)
    }
    
    function md5_gg(a, b, c, d, e, f, g) {
        return md5_cmn(b & d | c & ~d, a, b, e, f, g)
    }
    
    function md5_hh(a, b, c, d, e, f, g) {
        return md5_cmn(b ^ c ^ d, a, b, e, f, g)
    }
    
    function md5_ii(a, b, c, d, e, f, g) {
        return md5_cmn(c ^ (b | ~d), a, b, e, f, g)
    }
    
    function core_hmac_md5(a, b) {
        var d, e, f, g, c = str2binl(a);
        for (c.length > 16 && (c = core_md5(c, a.length * chrsz)), d = Array(16), e = Array(16), f = 0; 16 > f; f++) d[f] = 909522486 ^ c[f], e[f] = 1549556828 ^ c[f];
        return g = core_md5(d.concat(str2binl(b)), 512 + b.length * chrsz), core_md5(e.concat(g), 640)
    }
    
    function safe_add(a, b) {
        var c = (65535 & a) + (65535 & b),
            d = (a >> 16) + (b >> 16) + (c >> 16);
        return d << 16 | 65535 & c
    }
    
    function bit_rol(a, b) {
        return a << b | a >>> 32 - b
    }
    
    function str2binl(a) {
        var d, b = Array(),
            c = (1 << chrsz) - 1;
        for (d = 0; d < a.length * chrsz; d += chrsz) b[d >> 5] |= (a.charCodeAt(d / chrsz) & c) << d % 32;
        return b
    }
    
    function binl2str(a) {
        var d, b = "",
            c = (1 << chrsz) - 1;
        for (d = 0; d < 32 * a.length; d += chrsz) b += String.fromCharCode(a[d >> 5] >>> d % 32 & c);
        return b
    }
    
    function binl2hex(a) {
        var d, b = hexcase ? "0123456789ABCDEF" : "0123456789abcdef",
            c = "";
        for (d = 0; d < 4 * a.length; d++) c += b.charAt(15 & a[d >> 2] >> 8 * (d % 4) + 4) + b.charAt(15 & a[d >> 2] >> 8 * (d % 4));
        return c
    }
    
    function binl2b64(a) {
        var d, e, f, b = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",
            c = "";
        for (d = 0; d < 4 * a.length; d += 3)
            for (e = (255 & a[d >> 2] >> 8 * (d % 4)) << 16 | (255 & a[d + 1 >> 2] >> 8 * ((d + 1) % 4)) << 8 | 255 & a[d + 2 >> 2] >> 8 * ((d + 2) % 4), f = 0; 4 > f; f++) c += 8 * d + 6 * f > 32 * a.length ? b64pad : b.charAt(63 & e >> 6 * (3 - f));
        return c
    }
    
    function encode_param(a) {
        var b = new Base64;
        return b.encode(a)
    }
    
    function encode_secret() {
        var b, a = appId;
        for (b = 0; b < arguments.length; b++) a += arguments[b];
        return a = a.replace(/\s/g, ""), hex_md5(a)
    }
    
    function decode_result(a) {
        var b = new Base64;
        return b.decode(b.decode(b.decode(a)))
    }
    var hexcase = 0,
        b64pad = "",
        chrsz = 8,
        appId = "a01901d3caba1f362d69474674ce477f";
    var hexcase = 0;
    var b64pad = "";
    
    function hex_md5(s) {
        return rstr2hex(rstr_md5(str2rstr_utf8(s)))
    }
    
    function b64_md5(s) {
        return rstr2b64(rstr_md5(str2rstr_utf8(s)))
    }
    
    function any_md5(s, e) {
        return rstr2any(rstr_md5(str2rstr_utf8(s)), e)
    }
    
    function hex_hmac_md5(k, d) {
        return rstr2hex(rstr_hmac_md5(str2rstr_utf8(k), str2rstr_utf8(d)))
    }
    
    function b64_hmac_md5(k, d) {
        return rstr2b64(rstr_hmac_md5(str2rstr_utf8(k), str2rstr_utf8(d)))
    }
    
    function any_hmac_md5(k, d, e) {
        return rstr2any(rstr_hmac_md5(str2rstr_utf8(k), str2rstr_utf8(d)), e)
    }
    
    function md5_vm_test() {
        return hex_md5("abc").toLowerCase() == "900150983cd24fb0d6963f7d28e17f72"
    }
    
    function rstr_md5(s) {
        return binl2rstr(binl_md5(rstr2binl(s), s.length * 8))
    }
    
    function rstr_hmac_md5(key, data) {
        var bkey = rstr2binl(key);
        if (bkey.length > 16) bkey = binl_md5(bkey, key.length * 8);
        var ipad = Array(16),
            opad = Array(16);
        for (var i = 0; i < 16; i++) {
            ipad[i] = bkey[i] ^ 0x36363636;
            opad[i] = bkey[i] ^ 0x5C5C5C5C
        }
        var hash = binl_md5(ipad.concat(rstr2binl(data)), 512 + data.length * 8);
        return binl2rstr(binl_md5(opad.concat(hash), 512 + 128))
    }
    
    function rstr2hex(input) {
        try {
            hexcase
        } catch (e) {
            hexcase = 0
        }
        var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
        var output = "";
        var x;
        for (var i = 0; i < input.length; i++) {
            x = input.charCodeAt(i);
            output += hex_tab.charAt((x >>> 4) & 0x0F) + hex_tab.charAt(x & 0x0F)
        }
        return output
    }
    
    function rstr2b64(input) {
        try {
            b64pad
        } catch (e) {
            b64pad = ''
        }
        var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
        var output = "";
        var len = input.length;
        for (var i = 0; i < len; i += 3) {
            var triplet = (input.charCodeAt(i) << 16) | (i + 1 < len ? input.charCodeAt(i + 1) << 8 : 0) | (i + 2 < len ? input.charCodeAt(i + 2) : 0);
            for (var j = 0; j < 4; j++) {
                if (i * 8 + j * 6 > input.length * 8) output += b64pad;
                else output += tab.charAt((triplet >>> 6 * (3 - j)) & 0x3F)
            }
        }
        return output
    }
    
    function rstr2any(input, encoding) {
        var divisor = encoding.length;
        var i, j, q, x, quotient;
        var dividend = Array(Math.ceil(input.length / 2));
        for (i = 0; i < dividend.length; i++) {
            dividend[i] = (input.charCodeAt(i * 2) << 8) | input.charCodeAt(i * 2 + 1)
        }
        var full_length = Math.ceil(input.length * 8 / (Math.log(encoding.length) / Math.log(2)));
        var remainders = Array(full_length);
        for (j = 0; j < full_length; j++) {
            quotient = Array();
            x = 0;
            for (i = 0; i < dividend.length; i++) {
                x = (x << 16) + dividend[i];
                q = Math.floor(x / divisor);
                x -= q * divisor;
                if (quotient.length > 0 || q > 0) quotient[quotient.length] = q
            }
            remainders[j] = x;
            dividend = quotient
        }
        var output = "";
        for (i = remainders.length - 1; i >= 0; i--) output += encoding.charAt(remainders[i]);
        return output
    }
    
    function str2rstr_utf8(input) {
        var output = "";
        var i = -1;
        var x, y;
        while (++i < input.length) {
            x = input.charCodeAt(i);
            y = i + 1 < input.length ? input.charCodeAt(i + 1) : 0;
            if (0xD800 <= x && x <= 0xDBFF && 0xDC00 <= y && y <= 0xDFFF) {
                x = 0x10000 + ((x & 0x03FF) << 10) + (y & 0x03FF);
                i++
            }
            if (x <= 0x7F) output += String.fromCharCode(x);
            else if (x <= 0x7FF) output += String.fromCharCode(0xC0 | ((x >>> 6) & 0x1F), 0x80 | (x & 0x3F));
            else if (x <= 0xFFFF) output += String.fromCharCode(0xE0 | ((x >>> 12) & 0x0F), 0x80 | ((x >>> 6) & 0x3F), 0x80 | (x & 0x3F));
            else if (x <= 0x1FFFFF) output += String.fromCharCode(0xF0 | ((x >>> 18) & 0x07), 0x80 | ((x >>> 12) & 0x3F), 0x80 | ((x >>> 6) & 0x3F), 0x80 | (x & 0x3F))
        }
        return output
    }
    
    function str2rstr_utf16le(input) {
        var output = "";
        for (var i = 0; i < input.length; i++) output += String.fromCharCode(input.charCodeAt(i) & 0xFF, (input.charCodeAt(i) >>> 8) & 0xFF);
        return output
    }
    
    function str2rstr_utf16be(input) {
        var output = "";
        for (var i = 0; i < input.length; i++) output += String.fromCharCode((input.charCodeAt(i) >>> 8) & 0xFF, input.charCodeAt(i) & 0xFF);
        return output
    }
    
    function rstr2binl(input) {
        var output = Array(input.length >> 2);
        for (var i = 0; i < output.length; i++) output[i] = 0;
        for (var i = 0; i < input.length * 8; i += 8) output[i >> 5] |= (input.charCodeAt(i / 8) & 0xFF) << (i % 32);
        return output
    }
    
    function binl2rstr(input) {
        var output = "";
        for (var i = 0; i < input.length * 32; i += 8) output += String.fromCharCode((input[i >> 5] >>> (i % 32)) & 0xFF);
        return output
    }
    
    function binl_md5(x, len) {
        x[len >> 5] |= 0x80 << ((len) % 32);
        x[(((len + 64) >>> 9) << 4) + 14] = len;
        var a = 1732584193;
        var b = -271733879;
        var c = -1732584194;
        var d = 271733878;
        for (var i = 0; i < x.length; i += 16) {
            var olda = a;
            var oldb = b;
            var oldc = c;
            var oldd = d;
            a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936);
            d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586);
            c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819);
            b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330);
            a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897);
            d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426);
            c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341);
            b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983);
            a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416);
            d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417);
            c = md5_ff(c, d, a, b, x[i + 10], 17, -42063);
            b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162);
            a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682);
            d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101);
            c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290);
            b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329);
            a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510);
            d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632);
            c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713);
            b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302);
            a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691);
            d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083);
            c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335);
            b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848);
            a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438);
            d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690);
            c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961);
            b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501);
            a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467);
            d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784);
            c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473);
            b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734);
            a = md5_hh(a, b, c, d, x[i + 5], 4, -378558);
            d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463);
            c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562);
            b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556);
            a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060);
            d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353);
            c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632);
            b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640);
            a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174);
            d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222);
            c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979);
            b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189);
            a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487);
            d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835);
            c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520);
            b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651);
            a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844);
            d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415);
            c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905);
            b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055);
            a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571);
            d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606);
            c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523);
            b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799);
            a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359);
            d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744);
            c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380);
            b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649);
            a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070);
            d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379);
            c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259);
            b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551);
            a = safe_add(a, olda);
            b = safe_add(b, oldb);
            c = safe_add(c, oldc);
            d = safe_add(d, oldd)
        }
        return Array(a, b, c, d)
    }
    
    function md5_cmn(q, a, b, x, s, t) {
        return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b)
    }
    
    function md5_ff(a, b, c, d, x, s, t) {
        return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t)
    }
    
    function md5_gg(a, b, c, d, x, s, t) {
        return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t)
    }
    
    function md5_hh(a, b, c, d, x, s, t) {
        return md5_cmn(b ^ c ^ d, a, b, x, s, t)
    }
    
    function md5_ii(a, b, c, d, x, s, t) {
        return md5_cmn(c ^ (b | (~d)), a, b, x, s, t)
    }
    
    function safe_add(x, y) {
        var lsw = (x & 0xFFFF) + (y & 0xFFFF);
        var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
        return (msw << 16) | (lsw & 0xFFFF)
    }
    
    function bit_rol(num, cnt) {
        return (num << cnt) | (num >>> (32 - cnt))
    }
    var CryptoJS = CryptoJS || function(h, r) {
        var k = {},
            l = k.lib = {},
            n = function() {},
            f = l.Base = {
                extend: function(a) {
                    n.prototype = this;
                    var b = new n;
                    a && b.mixIn(a);
                    b.hasOwnProperty("init") || (b.init = function() {
                        b.s.init.apply(this, arguments)
                    });
                    b.init.prototype = b;
                    b.s = this;
                    return b
                },
                create: function() {
                    var a = this.extend();
                    a.init.apply(a, arguments);
                    return a
                },
                init: function() {},
                mixIn: function(a) {
                    for (var b in a) a.hasOwnProperty(b) && (this[b] = a[b]);
                    a.hasOwnProperty("toString") && (this.toString = a.toString)
                },
                clone: function() {
                    return this.init.prototype.extend(this)
                }
            },
            j = l.WordArray = f.extend({
                init: function(a, b) {
                    a = this.words = a || [];
                    this.sigBytes = b != r ? b : 4 * a.length
                },
                toString: function(a) {
                    return (a || s).stringify(this)
                },
                concat: function(a) {
                    var b = this.words,
                        d = a.words,
                        c = this.sigBytes;
                    a = a.sigBytes;
                    this.clamp();
                    if (c % 4)
                        for (var e = 0; e < a; e++) b[c + e >>> 2] |= (d[e >>> 2] >>> 24 - 8 * (e % 4) & 255) << 24 - 8 * ((c + e) % 4);
                    else if (65535 < d.length)
                        for (e = 0; e < a; e += 4) b[c + e >>> 2] = d[e >>> 2];
                    else b.push.apply(b, d);
                    this.sigBytes += a;
                    return this
                },
                clamp: function() {
                    var a = this.words,
                        b = this.sigBytes;
                    a[b >>> 2] &= 4294967295 << 32 - 8 * (b % 4);
                    a.length = h.ceil(b / 4)
                },
                clone: function() {
                    var a = f.clone.call(this);
                    a.words = this.words.slice(0);
                    return a
                },
                random: function(a) {
                    for (var b = [], d = 0; d < a; d += 4) b.push(4294967296 * h.random() | 0);
                    return new j.init(b, a)
                }
            }),
            m = k.enc = {},
            s = m.Hex = {
                stringify: function(a) {
                    var b = a.words;
                    a = a.sigBytes;
                    for (var d = [], c = 0; c < a; c++) {
                        var e = b[c >>> 2] >>> 24 - 8 * (c % 4) & 255;
                        d.push((e >>> 4).toString(16));
                        d.push((e & 15).toString(16))
                    }
                    return d.join("")
                },
                parse: function(a) {
                    for (var b = a.length, d = [], c = 0; c < b; c += 2) d[c >>> 3] |= parseInt(a.substr(c, 2), 16) << 24 - 4 * (c % 8);
                    return new j.init(d, b / 2)
                }
            },
            p = m.Latin1 = {
                stringify: function(a) {
                    var b = a.words;
                    a = a.sigBytes;
                    for (var d = [], c = 0; c < a; c++) d.push(String.fromCharCode(b[c >>> 2] >>> 24 - 8 * (c % 4) & 255));
                    return d.join("")
                },
                parse: function(a) {
                    for (var b = a.length, d = [], c = 0; c < b; c++) d[c >>> 2] |= (a.charCodeAt(c) & 255) << 24 - 8 * (c % 4);
                    return new j.init(d, b)
                }
            },
            t = m.Utf8 = {
                stringify: function(a) {
                    try {
                        return decodeURIComponent(escape(p.stringify(a)))
                    } catch (b) {
                        throw Error("Malformed UTF-8 data")
                    }
                },
                parse: function(a) {
                    return p.parse(unescape(encodeURIComponent(a)))
                }
            },
            q = l.BufferedBlockAlgorithm = f.extend({
                reset: function() {
                    this._3 = new j.init;
                    this._19 = 0
                },
                _11: function(a) {
                    "string" == typeof a && (a = t.parse(a));
                    this._3.concat(a);
                    this._19 += a.sigBytes
                },
                _4: function(a) {
                    var b = this._3,
                        d = b.words,
                        c = b.sigBytes,
                        e = this.blockSize,
                        f = c / (4 * e),
                        f = a ? h.ceil(f) : h.max((f | 0) - this._20, 0);
                    a = f * e;
                    c = h.min(4 * a, c);
                    if (a) {
                        for (var g = 0; g < a; g += e) this._23(d, g);
                        g = d.splice(0, a);
                        b.sigBytes -= c
                    }
                    return new j.init(g, c)
                },
                clone: function() {
                    var a = f.clone.call(this);
                    a._3 = this._3.clone();
                    return a
                },
                _20: 0
            });
        l.Hasher = q.extend({
            cfg: f.extend(),
            init: function(a) {
                this.cfg = this.cfg.extend(a);
                this.reset()
            },
            reset: function() {
                q.reset.call(this);
                this._7()
            },
            update: function(a) {
                this._11(a);
                this._4();
                return this
            },
            finalize: function(a) {
                a && this._11(a);
                return this._10()
            },
            blockSize: 16,
            _5: function(a) {
                return function(b, d) {
                    return (new a.init(d)).finalize(b)
                }
            },
            _30: function(a) {
                return function(b, d) {
                    return (new u.HMAC.init(a, d)).finalize(b)
                }
            }
        });
        var u = k.algo = {};
        return k
    }(Math);
    (function() {
        var h = CryptoJS,
            j = h.lib.WordArray;
        h.enc.Base64 = {
            stringify: function(b) {
                var e = b.words,
                    f = b.sigBytes,
                    c = this._17;
                b.clamp();
                b = [];
                for (var a = 0; a < f; a += 3)
                    for (var d = (e[a >>> 2] >>> 24 - 8 * (a % 4) & 255) << 16 | (e[a + 1 >>> 2] >>> 24 - 8 * ((a + 1) % 4) & 255) << 8 | e[a + 2 >>> 2] >>> 24 - 8 * ((a + 2) % 4) & 255, g = 0; 4 > g && a + 0.75 * g < f; g++) b.push(c.charAt(d >>> 6 * (3 - g) & 63));
                if (e = c.charAt(64))
                    for (; b.length % 4;) b.push(e);
                return b.join("")
            },
            parse: function(b) {
                var e = b.length,
                    f = this._17,
                    c = f.charAt(64);
                c && (c = b.indexOf(c), -1 != c && (e = c));
                for (var c = [], a = 0, d = 0; d < e; d++)
                    if (d % 4) {
                        var g = f.indexOf(b.charAt(d - 1)) << 2 * (d % 4),
                            h = f.indexOf(b.charAt(d)) >>> 6 - 2 * (d % 4);
                        c[a >>> 2] |= (g | h) << 24 - 8 * (a % 4);
                        a++
                    }
                return j.create(c, a)
            },
            _17: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="
        }
    })();
    CryptoJS.lib.Cipher || function(u) {
        var g = CryptoJS,
            f = g.lib,
            k = f.Base,
            l = f.WordArray,
            q = f.BufferedBlockAlgorithm,
            r = g.enc.Base64,
            v = g.algo.EvpKDF,
            n = f.Cipher = q.extend({
                cfg: k.extend(),
                createEncryptor: function(a, b) {
                    return this.create(this._12, a, b)
                },
                createDecryptor: function(a, b) {
                    return this.create(this._33, a, b)
                },
                init: function(a, b, c) {
                    this.cfg = this.cfg.extend(c);
                    this._16 = a;
                    this._13 = b;
                    this.reset()
                },
                reset: function() {
                    q.reset.call(this);
                    this._7()
                },
                process: function(a) {
                    this._11(a);
                    return this._4()
                },
                finalize: function(a) {
                    a && this._11(a);
                    return this._10()
                },
                keySize: 4,
                ivSize: 4,
                _12: 1,
                _33: 2,
                _5: function(a) {
                    return {
                        encrypt: function(b, c, d) {
                            return ("string" == typeof c ? s : j).encrypt(a, b, c, d)
                        },
                        decrypt: function(b, c, d) {
                            return ("string" == typeof c ? s : j).decrypt(a, b, c, d)
                        }
                    }
                }
            });
        f.StreamCipher = n.extend({
            _10: function() {
                return this._4(!0)
            },
            blockSize: 1
        });
        var m = g.mode = {},
            t = function(a, b, c) {
                var d = this._18;
                d ? this._18 = u : d = this._14;
                for (var e = 0; e < c; e++) a[b + e] ^= d[e]
            },
            h = (f.BlockCipherMode = k.extend({
                createEncryptor: function(a, b) {
                    return this.Encryptor.create(a, b)
                },
                createDecryptor: function(a, b) {
                    return this.Decryptor.create(a, b)
                },
                init: function(a, b) {
                    this._8 = a;
                    this._18 = b
                }
            })).extend();
        h.Encryptor = h.extend({
            processBlock: function(a, b) {
                var c = this._8,
                    d = c.blockSize;
                t.call(this, a, b, d);
                c.encryptBlock(a, b);
                this._14 = a.slice(b, b + d)
            }
        });
        h.Decryptor = h.extend({
            processBlock: function(a, b) {
                var c = this._8,
                    d = c.blockSize,
                    e = a.slice(b, b + d);
                c.decryptBlock(a, b);
                t.call(this, a, b, d);
                this._14 = e
            }
        });
        m = m.CBC = h;
        h = (g.pad = {}).Pkcs7 = {
            pad: function(a, b) {
                for (var c = 4 * b, c = c - a.sigBytes % c, d = c << 24 | c << 16 | c << 8 | c, e = [], f = 0; f < c; f += 4) e.push(d);
                c = l.create(e, c);
                a.concat(c)
            },
            unpad: function(a) {
                a.sigBytes -= a.words[a.sigBytes - 1 >>> 2] & 255
            }
        };
        f.BlockCipher = n.extend({
            cfg: n.cfg.extend({
                mode: m,
                padding: h
            }),
            reset: function() {
                n.reset.call(this);
                var a = this.cfg,
                    b = a.iv,
                    a = a.mode;
                if (this._16 == this._12) var c = a.createEncryptor;
                else c = a.createDecryptor, this._20 = 1;
                this._31 = c.call(a, this, b && b.words)
            },
            _23: function(a, b) {
                this._31.processBlock(a, b)
            },
            _10: function() {
                var a = this.cfg.padding;
                if (this._16 == this._12) {
                    a.pad(this._3, this.blockSize);
                    var b = this._4(!0)
                } else b = this._4(!0), a.unpad(b);
                return b
            },
            blockSize: 4
        });
        var p = f.CipherParams = k.extend({
                init: function(a) {
                    this.mixIn(a)
                },
                toString: function(a) {
                    return (a || this.formatter).stringify(this)
                }
            }),
            m = (g.format = {}).OpenSSL = {
                stringify: function(a) {
                    var b = a.ciphertext;
                    a = a.salt;
                    return (a ? l.create([1398893684, 1701076831]).concat(a).concat(b) : b).toString(r)
                },
                parse: function(a) {
                    a = r.parse(a);
                    var b = a.words;
                    if (1398893684 == b[0] && 1701076831 == b[1]) {
                        var c = l.create(b.slice(2, 4));
                        b.splice(0, 4);
                        a.sigBytes -= 16
                    }
                    return p.create({
                        ciphertext: a,
                        salt: c
                    })
                }
            },
            j = f.SerializableCipher = k.extend({
                cfg: k.extend({
                    format: m
                }),
                encrypt: function(a, b, c, d) {
                    d = this.cfg.extend(d);
                    var e = a.createEncryptor(c, d);
                    b = e.finalize(b);
                    e = e.cfg;
                    return p.create({
                        ciphertext: b,
                        key: c,
                        iv: e.iv,
                        algorithm: a,
                        mode: e.mode,
                        padding: e.padding,
                        blockSize: a.blockSize,
                        formatter: d.format
                    })
                },
                decrypt: function(a, b, c, d) {
                    d = this.cfg.extend(d);
                    b = this._15(b, d.format);
                    return a.createDecryptor(c, d).finalize(b.ciphertext)
                },
                _15: function(a, b) {
                    return "string" == typeof a ? b.parse(a, this) : a
                }
            }),
            g = (g.kdf = {}).OpenSSL = {
                execute: function(a, b, c, d) {
                    d || (d = l.random(8));
                    a = v.create({
                        keySize: b + c
                    }).compute(a, d);
                    c = l.create(a.words.slice(b), 4 * c);
                    a.sigBytes = 4 * b;
                    return p.create({
                        key: a,
                        iv: c,
                        salt: d
                    })
                }
            },
            s = f.PasswordBasedCipher = j.extend({
                cfg: j.cfg.extend({
                    kdf: g
                }),
                encrypt: function(a, b, c, d) {
                    d = this.cfg.extend(d);
                    c = d.kdf.execute(c, a.keySize, a.ivSize);
                    d.iv = c.iv;
                    a = j.encrypt.call(this, a, b, c.key, d);
                    a.mixIn(c);
                    return a
                },
                decrypt: function(a, b, c, d) {
                    d = this.cfg.extend(d);
                    b = this._15(b, d.format);
                    c = d.kdf.execute(c, a.keySize, a.ivSize, b.salt);
                    d.iv = c.iv;
                    return j.decrypt.call(this, a, b, c.key, d)
                }
            })
    }();
    CryptoJS.mode.ECB = function() {
        var a = CryptoJS.lib.BlockCipherMode.extend();
        a.Encryptor = a.extend({
            processBlock: function(a, b) {
                this._8.encryptBlock(a, b)
            }
        });
        a.Decryptor = a.extend({
            processBlock: function(a, b) {
                this._8.decryptBlock(a, b)
            }
        });
        return a
    }();
    (function(E) {
        function h(a, f, g, j, p, h, k) {
            a = a + (f & g | ~f & j) + p + k;
            return (a << h | a >>> 32 - h) + f
        }
    
        function k(a, f, g, j, p, h, k) {
            a = a + (f & j | g & ~j) + p + k;
            return (a << h | a >>> 32 - h) + f
        }
    
        function l(a, f, g, j, h, k, l) {
            a = a + (f ^ g ^ j) + h + l;
            return (a << k | a >>> 32 - k) + f
        }
    
        function n(a, f, g, j, h, k, l) {
            a = a + (g ^ (f | ~j)) + h + l;
            return (a << k | a >>> 32 - k) + f
        }
        for (var r = CryptoJS, q = r.lib, F = q.WordArray, s = q.Hasher, q = r.algo, a = [], t = 0; 64 > t; t++) a[t] = 4294967296 * E.abs(E.sin(t + 1)) | 0;
        q = q.MD5 = s.extend({
            _7: function() {
                this._9 = new F.init([1732584193, 4023233417, 2562383102, 271733878])
            },
            _23: function(m, f) {
                for (var g = 0; 16 > g; g++) {
                    var j = f + g,
                        p = m[j];
                    m[j] = (p << 8 | p >>> 24) & 16711935 | (p << 24 | p >>> 8) & 4278255360
                }
                var g = this._9.words,
                    j = m[f + 0],
                    p = m[f + 1],
                    q = m[f + 2],
                    r = m[f + 3],
                    s = m[f + 4],
                    t = m[f + 5],
                    u = m[f + 6],
                    v = m[f + 7],
                    w = m[f + 8],
                    x = m[f + 9],
                    y = m[f + 10],
                    z = m[f + 11],
                    A = m[f + 12],
                    B = m[f + 13],
                    C = m[f + 14],
                    D = m[f + 15],
                    b = g[0],
                    c = g[1],
                    d = g[2],
                    e = g[3],
                    b = h(b, c, d, e, j, 7, a[0]),
                    e = h(e, b, c, d, p, 12, a[1]),
                    d = h(d, e, b, c, q, 17, a[2]),
                    c = h(c, d, e, b, r, 22, a[3]),
                    b = h(b, c, d, e, s, 7, a[4]),
                    e = h(e, b, c, d, t, 12, a[5]),
                    d = h(d, e, b, c, u, 17, a[6]),
                    c = h(c, d, e, b, v, 22, a[7]),
                    b = h(b, c, d, e, w, 7, a[8]),
                    e = h(e, b, c, d, x, 12, a[9]),
                    d = h(d, e, b, c, y, 17, a[10]),
                    c = h(c, d, e, b, z, 22, a[11]),
                    b = h(b, c, d, e, A, 7, a[12]),
                    e = h(e, b, c, d, B, 12, a[13]),
                    d = h(d, e, b, c, C, 17, a[14]),
                    c = h(c, d, e, b, D, 22, a[15]),
                    b = k(b, c, d, e, p, 5, a[16]),
                    e = k(e, b, c, d, u, 9, a[17]),
                    d = k(d, e, b, c, z, 14, a[18]),
                    c = k(c, d, e, b, j, 20, a[19]),
                    b = k(b, c, d, e, t, 5, a[20]),
                    e = k(e, b, c, d, y, 9, a[21]),
                    d = k(d, e, b, c, D, 14, a[22]),
                    c = k(c, d, e, b, s, 20, a[23]),
                    b = k(b, c, d, e, x, 5, a[24]),
                    e = k(e, b, c, d, C, 9, a[25]),
                    d = k(d, e, b, c, r, 14, a[26]),
                    c = k(c, d, e, b, w, 20, a[27]),
                    b = k(b, c, d, e, B, 5, a[28]),
                    e = k(e, b, c, d, q, 9, a[29]),
                    d = k(d, e, b, c, v, 14, a[30]),
                    c = k(c, d, e, b, A, 20, a[31]),
                    b = l(b, c, d, e, t, 4, a[32]),
                    e = l(e, b, c, d, w, 11, a[33]),
                    d = l(d, e, b, c, z, 16, a[34]),
                    c = l(c, d, e, b, C, 23, a[35]),
                    b = l(b, c, d, e, p, 4, a[36]),
                    e = l(e, b, c, d, s, 11, a[37]),
                    d = l(d, e, b, c, v, 16, a[38]),
                    c = l(c, d, e, b, y, 23, a[39]),
                    b = l(b, c, d, e, B, 4, a[40]),
                    e = l(e, b, c, d, j, 11, a[41]),
                    d = l(d, e, b, c, r, 16, a[42]),
                    c = l(c, d, e, b, u, 23, a[43]),
                    b = l(b, c, d, e, x, 4, a[44]),
                    e = l(e, b, c, d, A, 11, a[45]),
                    d = l(d, e, b, c, D, 16, a[46]),
                    c = l(c, d, e, b, q, 23, a[47]),
                    b = n(b, c, d, e, j, 6, a[48]),
                    e = n(e, b, c, d, v, 10, a[49]),
                    d = n(d, e, b, c, C, 15, a[50]),
                    c = n(c, d, e, b, t, 21, a[51]),
                    b = n(b, c, d, e, A, 6, a[52]),
                    e = n(e, b, c, d, r, 10, a[53]),
                    d = n(d, e, b, c, y, 15, a[54]),
                    c = n(c, d, e, b, p, 21, a[55]),
                    b = n(b, c, d, e, w, 6, a[56]),
                    e = n(e, b, c, d, D, 10, a[57]),
                    d = n(d, e, b, c, u, 15, a[58]),
                    c = n(c, d, e, b, B, 21, a[59]),
                    b = n(b, c, d, e, s, 6, a[60]),
                    e = n(e, b, c, d, z, 10, a[61]),
                    d = n(d, e, b, c, q, 15, a[62]),
                    c = n(c, d, e, b, x, 21, a[63]);
                g[0] = g[0] + b | 0;
                g[1] = g[1] + c | 0;
                g[2] = g[2] + d | 0;
                g[3] = g[3] + e | 0
            },
            _10: function() {
                var a = this._3,
                    f = a.words,
                    g = 8 * this._19,
                    j = 8 * a.sigBytes;
                f[j >>> 5] |= 128 << 24 - j % 32;
                var h = E.floor(g / 4294967296);
                f[(j + 64 >>> 9 << 4) + 15] = (h << 8 | h >>> 24) & 16711935 | (h << 24 | h >>> 8) & 4278255360;
                f[(j + 64 >>> 9 << 4) + 14] = (g << 8 | g >>> 24) & 16711935 | (g << 24 | g >>> 8) & 4278255360;
                a.sigBytes = 4 * (f.length + 1);
                this._4();
                a = this._9;
                f = a.words;
                for (g = 0; 4 > g; g++) j = f[g], f[g] = (j << 8 | j >>> 24) & 16711935 | (j << 24 | j >>> 8) & 4278255360;
                return a
            },
            clone: function() {
                var a = s.clone.call(this);
                a._9 = this._9.clone();
                return a
            }
        });
        r.MD5 = s._5(q);
        r.HmacMD5 = s._30(q)
    })(Math);
    (function() {
        for (var q = CryptoJS, x = q.lib.BlockCipher, r = q.algo, j = [], y = [], z = [], A = [], B = [], C = [], s = [], u = [], v = [], w = [], g = [], k = 0; 256 > k; k++) g[k] = 128 > k ? k << 1 : k << 1 ^ 283;
        for (var n = 0, l = 0, k = 0; 256 > k; k++) {
            var f = l ^ l << 1 ^ l << 2 ^ l << 3 ^ l << 4,
                f = f >>> 8 ^ f & 255 ^ 99;
            j[n] = f;
            y[f] = n;
            var t = g[n],
                D = g[t],
                E = g[D],
                b = 257 * g[f] ^ 16843008 * f;
            z[n] = b << 24 | b >>> 8;
            A[n] = b << 16 | b >>> 16;
            B[n] = b << 8 | b >>> 24;
            C[n] = b;
            b = 16843009 * E ^ 65537 * D ^ 257 * t ^ 16843008 * n;
            s[f] = b << 24 | b >>> 8;
            u[f] = b << 16 | b >>> 16;
            v[f] = b << 8 | b >>> 24;
            w[f] = b;
            n ? (n = t ^ g[g[g[E ^ t]]], l ^= g[g[l]]) : n = l = 1
        }
        var F = [0, 1, 2, 4, 8, 16, 32, 64, 128, 27, 54],
            r = r.AES = x.extend({
                _7: function() {
                    for (var c = this._13, e = c.words, a = c.sigBytes / 4, c = 4 * ((this._26 = a + 6) + 1), b = this._32 = [], h = 0; h < c; h++)
                        if (h < a) b[h] = e[h];
                        else {
                            var d = b[h - 1];
                            h % a ? 6 < a && 4 == h % a && (d = j[d >>> 24] << 24 | j[d >>> 16 & 255] << 16 | j[d >>> 8 & 255] << 8 | j[d & 255]) : (d = d << 8 | d >>> 24, d = j[d >>> 24] << 24 | j[d >>> 16 & 255] << 16 | j[d >>> 8 & 255] << 8 | j[d & 255], d ^= F[h / a | 0] << 24);
                            b[h] = b[h - a] ^ d
                        }
                    e = this._34 = [];
                    for (a = 0; a < c; a++) h = c - a, d = a % 4 ? b[h] : b[h - 4], e[a] = 4 > a || 4 >= h ? d : s[j[d >>> 24]] ^ u[j[d >>> 16 & 255]] ^ v[j[d >>> 8 & 255]] ^ w[j[d & 255]]
                },
                encryptBlock: function(c, e) {
                    this._6(c, e, this._32, z, A, B, C, j)
                },
                decryptBlock: function(c, e) {
                    var a = c[e + 1];
                    c[e + 1] = c[e + 3];
                    c[e + 3] = a;
                    this._6(c, e, this._34, s, u, v, w, y);
                    a = c[e + 1];
                    c[e + 1] = c[e + 3];
                    c[e + 3] = a
                },
                _6: function(c, e, a, b, h, d, j, m) {
                    for (var n = this._26, f = c[e] ^ a[0], g = c[e + 1] ^ a[1], k = c[e + 2] ^ a[2], p = c[e + 3] ^ a[3], l = 4, t = 1; t < n; t++) var q = b[f >>> 24] ^ h[g >>> 16 & 255] ^ d[k >>> 8 & 255] ^ j[p & 255] ^ a[l++],
                        r = b[g >>> 24] ^ h[k >>> 16 & 255] ^ d[p >>> 8 & 255] ^ j[f & 255] ^ a[l++],
                        s = b[k >>> 24] ^ h[p >>> 16 & 255] ^ d[f >>> 8 & 255] ^ j[g & 255] ^ a[l++],
                        p = b[p >>> 24] ^ h[f >>> 16 & 255] ^ d[g >>> 8 & 255] ^ j[k & 255] ^ a[l++],
                        f = q,
                        g = r,
                        k = s;
                    q = (m[f >>> 24] << 24 | m[g >>> 16 & 255] << 16 | m[k >>> 8 & 255] << 8 | m[p & 255]) ^ a[l++];
                    r = (m[g >>> 24] << 24 | m[k >>> 16 & 255] << 16 | m[p >>> 8 & 255] << 8 | m[f & 255]) ^ a[l++];
                    s = (m[k >>> 24] << 24 | m[p >>> 16 & 255] << 16 | m[f >>> 8 & 255] << 8 | m[g & 255]) ^ a[l++];
                    p = (m[p >>> 24] << 24 | m[f >>> 16 & 255] << 16 | m[g >>> 8 & 255] << 8 | m[k & 255]) ^ a[l++];
                    c[e] = q;
                    c[e + 1] = r;
                    c[e + 2] = s;
                    c[e + 3] = p
                },
                keySize: 8
            });
        q.AES = x._5(r)
    })();
    (function() {
        function j(b, c) {
            var a = (this._0 >>> b ^ this._1) & c;
            this._1 ^= a;
            this._0 ^= a << b
        }
    
        function l(b, c) {
            var a = (this._1 >>> b ^ this._0) & c;
            this._0 ^= a;
            this._1 ^= a << b
        }
        var h = CryptoJS,
            e = h.lib,
            n = e.WordArray,
            e = e.BlockCipher,
            g = h.algo,
            q = [57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35, 27, 19, 11, 3, 60, 52, 44, 36, 63, 55, 47, 39, 31, 23, 15, 7, 62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 28, 20, 12, 4],
            p = [14, 17, 11, 24, 1, 5, 3, 28, 15, 6, 21, 10, 23, 19, 12, 4, 26, 8, 16, 7, 27, 20, 13, 2, 41, 52, 31, 37, 47, 55, 30, 40, 51, 45, 33, 48, 44, 49, 39, 56, 34, 53, 46, 42, 50, 36, 29, 32],
            r = [1, 2, 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23, 25, 27, 28],
            s = [{
                "0": 8421888,
                268435456: 32768,
                536870912: 8421378,
                805306368: 2,
                1073741824: 512,
                1342177280: 8421890,
                1610612736: 8389122,
                1879048192: 8388608,
                2147483648: 514,
                2415919104: 8389120,
                2684354560: 33280,
                2952790016: 8421376,
                3221225472: 32770,
                3489660928: 8388610,
                3758096384: 0,
                4026531840: 33282,
                134217728: 0,
                402653184: 8421890,
                671088640: 33282,
                939524096: 32768,
                1207959552: 8421888,
                1476395008: 512,
                1744830464: 8421378,
                2013265920: 2,
                2281701376: 8389120,
                2550136832: 33280,
                2818572288: 8421376,
                3087007744: 8389122,
                3355443200: 8388610,
                3623878656: 32770,
                3892314112: 514,
                4160749568: 8388608,
                1: 32768,
                268435457: 2,
                536870913: 8421888,
                805306369: 8388608,
                1073741825: 8421378,
                1342177281: 33280,
                1610612737: 512,
                1879048193: 8389122,
                2147483649: 8421890,
                2415919105: 8421376,
                2684354561: 8388610,
                2952790017: 33282,
                3221225473: 514,
                3489660929: 8389120,
                3758096385: 32770,
                4026531841: 0,
                134217729: 8421890,
                402653185: 8421376,
                671088641: 8388608,
                939524097: 512,
                1207959553: 32768,
                1476395009: 8388610,
                1744830465: 2,
                2013265921: 33282,
                2281701377: 32770,
                2550136833: 8389122,
                2818572289: 514,
                3087007745: 8421888,
                3355443201: 8389120,
                3623878657: 0,
                3892314113: 33280,
                4160749569: 8421378
            }, {
                "0": 1074282512,
                16777216: 16384,
                33554432: 524288,
                50331648: 1074266128,
                67108864: 1073741840,
                83886080: 1074282496,
                100663296: 1073758208,
                117440512: 16,
                134217728: 540672,
                150994944: 1073758224,
                167772160: 1073741824,
                184549376: 540688,
                201326592: 524304,
                218103808: 0,
                234881024: 16400,
                251658240: 1074266112,
                8388608: 1073758208,
                25165824: 540688,
                41943040: 16,
                58720256: 1073758224,
                75497472: 1074282512,
                92274688: 1073741824,
                109051904: 524288,
                125829120: 1074266128,
                142606336: 524304,
                159383552: 0,
                176160768: 16384,
                192937984: 1074266112,
                209715200: 1073741840,
                226492416: 540672,
                243269632: 1074282496,
                260046848: 16400,
                268435456: 0,
                285212672: 1074266128,
                301989888: 1073758224,
                318767104: 1074282496,
                335544320: 1074266112,
                352321536: 16,
                369098752: 540688,
                385875968: 16384,
                402653184: 16400,
                419430400: 524288,
                436207616: 524304,
                452984832: 1073741840,
                469762048: 540672,
                486539264: 1073758208,
                503316480: 1073741824,
                520093696: 1074282512,
                276824064: 540688,
                293601280: 524288,
                310378496: 1074266112,
                327155712: 16384,
                343932928: 1073758208,
                360710144: 1074282512,
                377487360: 16,
                394264576: 1073741824,
                411041792: 1074282496,
                427819008: 1073741840,
                444596224: 1073758224,
                461373440: 524304,
                478150656: 0,
                494927872: 16400,
                511705088: 1074266128,
                528482304: 540672
            }, {
                "0": 260,
                1048576: 0,
                2097152: 67109120,
                3145728: 65796,
                4194304: 65540,
                5242880: 67108868,
                6291456: 67174660,
                7340032: 67174400,
                8388608: 67108864,
                9437184: 67174656,
                10485760: 65792,
                11534336: 67174404,
                12582912: 67109124,
                13631488: 65536,
                14680064: 4,
                15728640: 256,
                524288: 67174656,
                1572864: 67174404,
                2621440: 0,
                3670016: 67109120,
                4718592: 67108868,
                5767168: 65536,
                6815744: 65540,
                7864320: 260,
                8912896: 4,
                9961472: 256,
                11010048: 67174400,
                12058624: 65796,
                13107200: 65792,
                14155776: 67109124,
                15204352: 67174660,
                16252928: 67108864,
                16777216: 67174656,
                17825792: 65540,
                18874368: 65536,
                19922944: 67109120,
                20971520: 256,
                22020096: 67174660,
                23068672: 67108868,
                24117248: 0,
                25165824: 67109124,
                26214400: 67108864,
                27262976: 4,
                28311552: 65792,
                29360128: 67174400,
                30408704: 260,
                31457280: 65796,
                32505856: 67174404,
                17301504: 67108864,
                18350080: 260,
                19398656: 67174656,
                20447232: 0,
                21495808: 65540,
                22544384: 67109120,
                23592960: 256,
                24641536: 67174404,
                25690112: 65536,
                26738688: 67174660,
                27787264: 65796,
                28835840: 67108868,
                29884416: 67109124,
                30932992: 67174400,
                31981568: 4,
                33030144: 65792
            }, {
                "0": 2151682048,
                65536: 2147487808,
                131072: 4198464,
                196608: 2151677952,
                262144: 0,
                327680: 4198400,
                393216: 2147483712,
                458752: 4194368,
                524288: 2147483648,
                589824: 4194304,
                655360: 64,
                720896: 2147487744,
                786432: 2151678016,
                851968: 4160,
                917504: 4096,
                983040: 2151682112,
                32768: 2147487808,
                98304: 64,
                163840: 2151678016,
                229376: 2147487744,
                294912: 4198400,
                360448: 2151682112,
                425984: 0,
                491520: 2151677952,
                557056: 4096,
                622592: 2151682048,
                688128: 4194304,
                753664: 4160,
                819200: 2147483648,
                884736: 4194368,
                950272: 4198464,
                1015808: 2147483712,
                1048576: 4194368,
                1114112: 4198400,
                1179648: 2147483712,
                1245184: 0,
                1310720: 4160,
                1376256: 2151678016,
                1441792: 2151682048,
                1507328: 2147487808,
                1572864: 2151682112,
                1638400: 2147483648,
                1703936: 2151677952,
                1769472: 4198464,
                1835008: 2147487744,
                1900544: 4194304,
                1966080: 64,
                2031616: 4096,
                1081344: 2151677952,
                1146880: 2151682112,
                1212416: 0,
                1277952: 4198400,
                1343488: 4194368,
                1409024: 2147483648,
                1474560: 2147487808,
                1540096: 64,
                1605632: 2147483712,
                1671168: 4096,
                1736704: 2147487744,
                1802240: 2151678016,
                1867776: 4160,
                1933312: 2151682048,
                1998848: 4194304,
                2064384: 4198464
            }, {
                "0": 128,
                4096: 17039360,
                8192: 262144,
                12288: 536870912,
                16384: 537133184,
                20480: 16777344,
                24576: 553648256,
                28672: 262272,
                32768: 16777216,
                36864: 537133056,
                40960: 536871040,
                45056: 553910400,
                49152: 553910272,
                53248: 0,
                57344: 17039488,
                61440: 553648128,
                2048: 17039488,
                6144: 553648256,
                10240: 128,
                14336: 17039360,
                18432: 262144,
                22528: 537133184,
                26624: 553910272,
                30720: 536870912,
                34816: 537133056,
                38912: 0,
                43008: 553910400,
                47104: 16777344,
                51200: 536871040,
                55296: 553648128,
                59392: 16777216,
                63488: 262272,
                65536: 262144,
                69632: 128,
                73728: 536870912,
                77824: 553648256,
                81920: 16777344,
                86016: 553910272,
                90112: 537133184,
                94208: 16777216,
                98304: 553910400,
                102400: 553648128,
                106496: 17039360,
                110592: 537133056,
                114688: 262272,
                118784: 536871040,
                122880: 0,
                126976: 17039488,
                67584: 553648256,
                71680: 16777216,
                75776: 17039360,
                79872: 537133184,
                83968: 536870912,
                88064: 17039488,
                92160: 128,
                96256: 553910272,
                100352: 262272,
                104448: 553910400,
                108544: 0,
                112640: 553648128,
                116736: 16777344,
                120832: 262144,
                124928: 537133056,
                129024: 536871040
            }, {
                "0": 268435464,
                256: 8192,
                512: 270532608,
                768: 270540808,
                1024: 268443648,
                1280: 2097152,
                1536: 2097160,
                1792: 268435456,
                2048: 0,
                2304: 268443656,
                2560: 2105344,
                2816: 8,
                3072: 270532616,
                3328: 2105352,
                3584: 8200,
                3840: 270540800,
                128: 270532608,
                384: 270540808,
                640: 8,
                896: 2097152,
                1152: 2105352,
                1408: 268435464,
                1664: 268443648,
                1920: 8200,
                2176: 2097160,
                2432: 8192,
                2688: 268443656,
                2944: 270532616,
                3200: 0,
                3456: 270540800,
                3712: 2105344,
                3968: 268435456,
                4096: 268443648,
                4352: 270532616,
                4608: 270540808,
                4864: 8200,
                5120: 2097152,
                5376: 268435456,
                5632: 268435464,
                5888: 2105344,
                6144: 2105352,
                6400: 0,
                6656: 8,
                6912: 270532608,
                7168: 8192,
                7424: 268443656,
                7680: 270540800,
                7936: 2097160,
                4224: 8,
                4480: 2105344,
                4736: 2097152,
                4992: 268435464,
                5248: 268443648,
                5504: 8200,
                5760: 270540808,
                6016: 270532608,
                6272: 270540800,
                6528: 270532616,
                6784: 8192,
                7040: 2105352,
                7296: 2097160,
                7552: 0,
                7808: 268435456,
                8064: 268443656
            }, {
                "0": 1048576,
                16: 33555457,
                32: 1024,
                48: 1049601,
                64: 34604033,
                80: 0,
                96: 1,
                112: 34603009,
                128: 33555456,
                144: 1048577,
                160: 33554433,
                176: 34604032,
                192: 34603008,
                208: 1025,
                224: 1049600,
                240: 33554432,
                8: 34603009,
                24: 0,
                40: 33555457,
                56: 34604032,
                72: 1048576,
                88: 33554433,
                104: 33554432,
                120: 1025,
                136: 1049601,
                152: 33555456,
                168: 34603008,
                184: 1048577,
                200: 1024,
                216: 34604033,
                232: 1,
                248: 1049600,
                256: 33554432,
                272: 1048576,
                288: 33555457,
                304: 34603009,
                320: 1048577,
                336: 33555456,
                352: 34604032,
                368: 1049601,
                384: 1025,
                400: 34604033,
                416: 1049600,
                432: 1,
                448: 0,
                464: 34603008,
                480: 33554433,
                496: 1024,
                264: 1049600,
                280: 33555457,
                296: 34603009,
                312: 1,
                328: 33554432,
                344: 1048576,
                360: 1025,
                376: 34604032,
                392: 33554433,
                408: 34603008,
                424: 0,
                440: 34604033,
                456: 1049601,
                472: 1024,
                488: 33555456,
                504: 1048577
            }, {
                "0": 134219808,
                1: 131072,
                2: 134217728,
                3: 32,
                4: 131104,
                5: 134350880,
                6: 134350848,
                7: 2048,
                8: 134348800,
                9: 134219776,
                10: 133120,
                11: 134348832,
                12: 2080,
                13: 0,
                14: 134217760,
                15: 133152,
                2147483648: 2048,
                2147483649: 134350880,
                2147483650: 134219808,
                2147483651: 134217728,
                2147483652: 134348800,
                2147483653: 133120,
                2147483654: 133152,
                2147483655: 32,
                2147483656: 134217760,
                2147483657: 2080,
                2147483658: 131104,
                2147483659: 134350848,
                2147483660: 0,
                2147483661: 134348832,
                2147483662: 134219776,
                2147483663: 131072,
                16: 133152,
                17: 134350848,
                18: 32,
                19: 2048,
                20: 134219776,
                21: 134217760,
                22: 134348832,
                23: 131072,
                24: 0,
                25: 131104,
                26: 134348800,
                27: 134219808,
                28: 134350880,
                29: 133120,
                30: 2080,
                31: 134217728,
                2147483664: 131072,
                2147483665: 2048,
                2147483666: 134348832,
                2147483667: 133152,
                2147483668: 32,
                2147483669: 134348800,
                2147483670: 134217728,
                2147483671: 134219808,
                2147483672: 134350880,
                2147483673: 134217760,
                2147483674: 134219776,
                2147483675: 0,
                2147483676: 133120,
                2147483677: 2080,
                2147483678: 131104,
                2147483679: 134350848
            }],
            t = [4160749569, 528482304, 33030144, 2064384, 129024, 8064, 504, 2147483679],
            m = g.DES = e.extend({
                _7: function() {
                    for (var b = this._13.words, c = [], a = 0; 56 > a; a++) {
                        var f = q[a] - 1;
                        c[a] = b[f >>> 5] >>> 31 - f % 32 & 1
                    }
                    b = this._25 = [];
                    for (f = 0; 16 > f; f++) {
                        for (var d = b[f] = [], e = r[f], a = 0; 24 > a; a++) d[a / 6 | 0] |= c[(p[a] - 1 + e) % 28] << 31 - a % 6, d[4 + (a / 6 | 0)] |= c[28 + (p[a + 24] - 1 + e) % 28] << 31 - a % 6;
                        d[0] = d[0] << 1 | d[0] >>> 31;
                        for (a = 1; 7 > a; a++) d[a] >>>= 4 * (a - 1) + 3;
                        d[7] = d[7] << 5 | d[7] >>> 27
                    }
                    c = this._28 = [];
                    for (a = 0; 16 > a; a++) c[a] = b[15 - a]
                },
                encryptBlock: function(b, c) {
                    this._6(b, c, this._25)
                },
                decryptBlock: function(b, c) {
                    this._6(b, c, this._28)
                },
                _6: function(b, c, a) {
                    this._0 = b[c];
                    this._1 = b[c + 1];
                    j.call(this, 4, 252645135);
                    j.call(this, 16, 65535);
                    l.call(this, 2, 858993459);
                    l.call(this, 8, 16711935);
                    j.call(this, 1, 1431655765);
                    for (var f = 0; 16 > f; f++) {
                        for (var d = a[f], e = this._0, h = this._1, g = 0, k = 0; 8 > k; k++) g |= s[k][((h ^ d[k]) & t[k]) >>> 0];
                        this._0 = h;
                        this._1 = e ^ g
                    }
                    a = this._0;
                    this._0 = this._1;
                    this._1 = a;
                    j.call(this, 1, 1431655765);
                    l.call(this, 8, 16711935);
                    l.call(this, 2, 858993459);
                    j.call(this, 16, 65535);
                    j.call(this, 4, 252645135);
                    b[c] = this._0;
                    b[c + 1] = this._1
                },
                keySize: 2,
                ivSize: 2,
                blockSize: 2
            });
        h.DES = e._5(m);
        g = g.TripleDES = e.extend({
            _7: function() {
                var b = this._13.words;
                this._24 = m.createEncryptor(n.create(b.slice(0, 2)));
                this._21 = m.createEncryptor(n.create(b.slice(2, 4)));
                this._22 = m.createEncryptor(n.create(b.slice(4, 6)))
            },
            encryptBlock: function(b, c) {
                this._24.encryptBlock(b, c);
                this._21.decryptBlock(b, c);
                this._22.encryptBlock(b, c)
            },
            decryptBlock: function(b, c) {
                this._22.decryptBlock(b, c);
                this._21.encryptBlock(b, c);
                this._24.decryptBlock(b, c)
            },
            keySize: 6,
            ivSize: 2,
            blockSize: 2
        });
        h.TripleDES = e._5(g)
    })();
    const aes_server_key = "tGFsbXNwewZlcg==";
    const aes_server_iv = "w9VydmVswewexbQ==";
    const aes_client_key = "WksdsdflFweFZ==";
    const aes_client_iv = "klsfw9nsp=";
    const des_key = "ssfefwksdjskdsj==";
    const des_iv = "skzlkpoi=";
    const aes_local_key = 'emhlbnFpcGFsbWtleQ==';
    const aes_local_iv = 'emhlbnFpcGFsbWl2';
    var BASE64 = {
        encrypt: function(text) {
            var b = new Base64();
            return b.encode(text)
        },
        decrypt: function(text) {
            var b = new Base64();
            return b.decode(text)
        }
    };
    var DES = {
        encrypt: function(text, key, iv) {
            var secretkey = (CryptoJS.MD5(key).toString()).substr(0, 16);
            var secretiv = (CryptoJS.MD5(iv).toString()).substr(24, 8);
            secretkey = CryptoJS.enc.Utf8.parse(secretkey);
            secretiv = CryptoJS.enc.Utf8.parse(secretiv);
            var result = CryptoJS.DES.encrypt(text, secretkey, {
                iv: secretiv,
                mode: CryptoJS.mode.CBC,
                padding: CryptoJS.pad.Pkcs7
            });
            return result.toString()
        },
        decrypt: function(text, key, iv) {
            var secretkey = (CryptoJS.MD5(key).toString()).substr(0, 16);
            var secretiv = (CryptoJS.MD5(iv).toString()).substr(24, 8);
            secretkey = CryptoJS.enc.Utf8.parse(secretkey);
            secretiv = CryptoJS.enc.Utf8.parse(secretiv);
            var result = CryptoJS.DES.decrypt(text, secretkey, {
                iv: secretiv,
                mode: CryptoJS.mode.CBC,
                padding: CryptoJS.pad.Pkcs7
            });
            return result.toString(CryptoJS.enc.Utf8)
        }
    };
    var AES = {
        encrypt: function(text, key, iv) {
            var secretkey = (CryptoJS.MD5(key).toString()).substr(16, 16);
            var secretiv = (CryptoJS.MD5(iv).toString()).substr(0, 16);
            secretkey = CryptoJS.enc.Utf8.parse(secretkey);
            secretiv = CryptoJS.enc.Utf8.parse(secretiv);
            var result = CryptoJS.AES.encrypt(text, secretkey, {
                iv: secretiv,
                mode: CryptoJS.mode.CBC,
                padding: CryptoJS.pad.Pkcs7
            });
            return result.toString()
        },
        decrypt: function(text, key, iv) {
            var secretkey = (CryptoJS.MD5(key).toString()).substr(16, 16);
            var secretiv = (CryptoJS.MD5(iv).toString()).substr(0, 16);
            secretkey = CryptoJS.enc.Utf8.parse(secretkey);
            secretiv = CryptoJS.enc.Utf8.parse(secretiv);
            var result = CryptoJS.AES.decrypt(text, secretkey, {
                iv: secretiv,
                mode: CryptoJS.mode.CBC,
                padding: CryptoJS.pad.Pkcs7
            });
            return result.toString(CryptoJS.enc.Utf8)
        }
    };
    var localStorageUtil = {
        save: function(name, value) {
            var text = JSON.stringify(value);
            text = BASE64.encrypt(text);
            text = AES.encrypt(text, aes_local_key, aes_local_iv);
            try {
                localStorage.setItem(name, text)
            } catch (oException) {
                if (oException.name === 'QuotaExceededError') {
                    console.log('超出本地存储限额!');
                    localStorage.clear();
                    localStorage.setItem(name, text)
                }
            }
        },
        check: function(name) {
            return localStorage.getItem(name)
        },
        getValue: function(name) {
            var text = localStorage.getItem(name);
            var result = null;
            if (text) {
                text = AES.decrypt(text, aes_local_key, aes_local_iv);
                text = BASE64.decrypt(text);
                result = JSON.parse(text)
            }
            return result
        },
        remove: function(name) {
            localStorage.removeItem(name)
        }
    };
    
    function getDataFromLocalStorage(key, period) {
        if (typeof period === 'undefined') {
            period = 0
        }
        var d = DES.encrypt(key);
        d = BASE64.encrypt(key);
        var data = localStorageUtil.getValue(key);
        if (data) {
            const time = data.time;
            const current = new Date().getTime();
            if (new Date().getHours() >= 0 && new Date().getHours() < 5 && period > 1) {
                period = 1
            }
            if (current - (period * 60 * 60 * 1000) > time) {
                data = null
            }
            if (new Date().getHours() >= 5 && new Date(time).getDate() !== new Date().getDate() && period === 24) {
                data = null
            }
        }
        return data
    }
    
    function ObjectSort(obj) {
        var newObject = {};
        Object.keys(obj).sort().map(function(key) {
            newObject[key] = obj[key]
        });
        return newObject
    }
    
    function decodeData(data) {
        data = AES.decrypt(data, aes_server_key, aes_server_iv);
        data = DES.decrypt(data, des_key, des_iv);
        data = BASE64.decrypt(data);
        return data
    }
    var getParam = (function() {
        function ObjectSort(obj) {
            var newObject = {};
            Object.keys(obj).sort().map(function(key) {
                newObject[key] = obj[key]
            });
            return newObject
        }
        return function(method, obj) {
            var appId = '1a45f75b824b2dc628d5955356b5ef18';
            var clienttype = 'WEB';
            var timestamp = new Date().getTime();
            var param = {
                appId: appId,
                method: method,
                timestamp: timestamp,
                clienttype: clienttype,
                object: obj,
                secret: hex_md5(appId + method + timestamp + clienttype + JSON.stringify(ObjectSort(obj)))
            };
            param = BASE64.encrypt(JSON.stringify(param));
            return AES.encrypt(param, aes_client_key, aes_client_iv)
        }
    })();
    
    function getServerData(method, object, callback, period) {
        const key = hex_md5(method + JSON.stringify(object));
        const data = getDataFromLocalStorage(key, period);
        if (!data) {
            var param = getParam(method, object);
            $.ajax({
                url: '../apinew/aqistudyapi.php',
                data: {
                    d: param
                },
                type: "post",
                success: function(data) {
                    data = decodeData(data);
                    obj = JSON.parse(data);
                    if (obj.success) {
                        if (period > 0) {
                            obj.result.time = new Date().getTime();
                            localStorageUtil.save(key, obj.result)
                        }
                        callback(obj.result)
                    } else {
                        console.log(obj.errcode, obj.errmsg)
                    }
                }
            })
        } else {
            callback(data)
        }
    }
    
    function getPostParamCode(method, city, type, startTime, endTime){
        var param = {};
        param.city = city;
        param.type = type;
        param.startTime = startTime;
        param.endTime = endTime;
        return getParam(method, param);
    }
    jsCode.js

     

    转载于:https://www.cnblogs.com/biao-wu/articles/11342882.html

    展开全文
  • 从用户的headers进行反爬是最常见的反爬策略,Headers是一种最常见的反爬机制Headers是一种区分浏览器行为和机器行为中最简单的方法,还有一些网站会对Referer (上级链接)进行检测 从而实现爬虫。 相应的解决措施...

    1. Headers:

    从用户的headers进行反爬是最常见的反爬策略,Headers是一种最常见的反爬机制Headers是一种区分浏览器行为和机器行为中最简单的方法,还有一些网站会对Referer (上级链接)进行检测 从而实现爬虫。

    相应的解决措施:通过审查元素或者开发者工具获取相应的headers 然后把相应的headers 传输
    给python 的requests,这样就能很好地绕过。

    2. IP 限制

    一些网站会根据你的IP 地址访问的频率,次数进行反爬。也就是说如果你用单一的IP 地址访问频
    率过高,那么服务器会在短时间内禁止这个IP 访问。
      解决措施:构造自己的IP 代理池,然后每次访问时随机选择代理(但一些IP 地址不是非常稳定,
    需要经常检查更新)。

    3. UA 限制

    UA 是用户访问网站时候的浏览器标识,其反爬机制与ip 限制类似。

    解决措施:构造自己的UA 池,每次python 做requests 访问时随机挂上UA 标识,更好地模拟浏
    览器行为。当然如果反爬对时间还有限制的话,可以在requests 设置timeout(最好是随机休眠,这
    样会更安全稳定,time.sleep())。

    4. 验证码反爬虫或者模拟登陆

    验证码:这个办法也是相当古老并且相当的有效果,如果一个爬虫要解释一个验证码中的内容,这在以前通过简单的图像识别是可以完成的,但是就现在来讲,验证码的干扰线,噪点都很多,甚至还出现了人类都难以认识的验证码

    解决措施:验证码识别的基本方法:截图,二值化、中值滤波去噪、分割、紧缩重排(让高

    矮统一)、字库特征匹配识别。(python 的PIL 库或者其他)模拟登陆(例如知乎等):用好python requests 中的session

    5. Ajax 动态加载

    网页的不希望被爬虫拿到的数据使用Ajax 动态加载,这样就为爬虫造成了绝大的麻烦,如果一个爬虫不具备js 引擎,或者具备js 引擎,但是没有处理js 返回的方案,或者是具备了js 引擎,但是没办法让站点显示启用脚本设置。基于这些情况,ajax 动态加载反制爬虫还是相当有效的。

    Ajax 动态加载的工作原理是:从网页的url 加载网页的源代码之后,会在浏览器里执行JavaScript程序。这些程序会加载出更多的内容,并把这些内容传输到网页中。这就是为什么有些网页直接爬它的

    URL 时却没有数据的原因.

    解决策略:若使用审查元素分析”请求“对应的链接(方法:右键→审查元素→Network→清空,点

    击”加载更多“,出现对应的GET 链接寻找Type 为text/html 的,点击,查看get 参数或者复制Request
    URL),循环过程。如果“请求”之前有页面,依据上一步的网址进行分析推导第1 页。以此类推,抓取
    抓Ajax 地址的数据。对返回的json 使用requests 中的json 进行解析,使用eval()转成字典处理fiddler 可以格式化输出json 数据。

    6. cookie 限制

    一次打开网页会生成一个随机cookie,如果再次打开网页这个cookie 不存在,那么再次设置,第

    三次打开仍然不存在,这就非常有可能是爬虫在工作了。

    解决措施:在headers 挂上相应的cookie 或者根据其方法进行构造(例如从中选取几个字母进行

    构造)。如果过于复杂,可以考虑使用selenium 模块(可以完全模拟浏览器行为)。

    展开全文
  • 爬虫是一种模拟浏览器对网站发起请求,获取数据的方法。简单的爬虫在抓取网站数据的时候,因为对网站访问过于频繁,给服务器造成过大的压力,容易使网站崩溃,因此网站维护者会通过一些手段避免爬虫的访问,以下是...

    参考:https://www.cnblogs.com/LLBFWH/articles/10902533.html

    爬虫是一种模拟浏览器对网站发起请求,获取数据的方法。简单的爬虫在抓取网站数据的时候,因为对网站访问过于频繁,给服务器造成过大的压力,容易使网站崩溃,因此网站维护者会通过一些手段避免爬虫的访问,以下是几种常见的反爬虫和反反爬虫策略:
    在这里插入图片描述

    关于网站动态加载的方法,还能一种反反爬虫的方法:找到其api的接口,这里有一个爬取B站视频信息的实例就是使用的这种方法,地址:https://github.com/iszoop/BilibiliSpider

    爬虫进阶:反爬策略的应对机制

    爬虫与反爬虫,这相爱相杀的一对,简直可以写出一部壮观的斗争史。而在大数据时代,数据就是金钱,很多企业都为自己的网站运用了反爬虫机制,防止网页上的数据被爬虫爬走。然而,如果反爬机制过于严格,可能会误伤到真正的用户请求;如果既要和爬虫死磕,又要保证很低的误伤率,那么又会加大研发的成本。

    简单低级的爬虫速度快,伪装度低,如果没有反爬机制,它们可以很快的抓取大量数据,甚至因为请求过多,造成服务器不能正常工作。而伪装度高的爬虫爬取速度慢,对服务器造成的负担也相对较小。所以,网站反爬的重点也是那种简单粗暴的爬虫,反爬机制也会允许伪装度高的爬虫,获得数据。毕竟伪装度很高的爬虫与真实用户也就没有太大差别了。

    这篇文章主要讨论使用 Scrapy 框架时,如何应对普通的反爬机制。

    header校验

    最简单的反爬机制,就是检查 HTTP 请求的 Headers 信息,包括 User-Agent, Referer、Cookies 等。

    User-Agent

    在每次请求中,随机选取一个真实浏览器的 User-Agent。

    Referer

    Referer 是检查此请求由哪里来,通常可以做图片的盗链判断。在 Scrapy 中,如果某个页面 url 是通过之前爬取的页面提取到,Scrapy 会自动把之前爬取的页面 url 作为 Referfer。也可以通过上面的方式自己定义 Referfer 字段。

    Cookies

    网站可能会检测 Cookie 中 session_id 的使用次数,如果超过限制,就触发反爬策略。所以可以在 Scrapy 中设置 COOKIES_ENABLED = False让请求不带 Cookies。

    也有网站强制开启 Cookis,这时就要麻烦一点了。可以另写一个简单的爬虫,定时向目标网站发送不带 Cookies 的请求,提取响应中 Set-cookie 字段信息并保存。爬取网页时,把存储起来的 Cookies 带入 Headers 中。

    X-Forwarded-For

    在请求头中添加 X-Forwarded-For 字段,将自己申明为一个透明的代理服务器,一些网站对代理服务器会手软一些。
    X-Forwarded-For 头一般格式如下X-Forwarded-For: client1, proxy1, proxy2
    这里将 client1,proxy1 设置为随机 IP 地址,把自己的请求伪装成代理的随机 IP 产生的请求。然而由于 X-Forwarded-For 可以随意篡改,很多网站并不会信任这个值。

    限制 IP 的请求数量

    如果某一 IP 的请求速度过快,就触发反爬机制。当然可以通过放慢爬取速度绕过,这要以爬取时间大大增长为代价。另一种方法就是添加代理。
    request.meta['proxy'] = 'http://proxy_host:proxy_port

    然后再每次请求时使用不同的代理 IP。然而问题是如何获取大量的代理 IP?

    可以自己写一个 IP 代理获取和维护系统,定时从各种披露免费代理 IP 的网站爬取免费 IP 代理,然后定时扫描这些 IP 和端口是否可用,将不可用的代理 IP 及时清理。这样就有一个动态的代理库,每次请求再从库中随机选择一个代理。然而这个方案的缺点也很明显,开发代理获取和维护系统本身就很费时费力,并且这种免费代理的数量并不多,而且稳定性都比较差。如果必须要用到代理,也可以去买一些稳定的代理服务。这些服务大多会用到带认证的代理。

    动态代理

    现在越来越多的网站使用 ajax 动态加载内容,这时候可以先截取 ajax 请求分析一下,有可能根据 ajax 请求构造出相应的 API 请求的 URL 就可以直接获取想要的内容,通常是 json 格式,反而还不用去解析 HTML。

    然而,很多时候 ajax 请求都会经过后端鉴权,不能直接构造 URL 获取。这时就可以通过 PhantomJS+Selenium 模拟浏览器行为,抓取经过 js 渲染后的页面。具体可以参考:

    需要注意的是,使用 Selenium 后,请求不再由 Scrapy 的 Downloader 执行,所以之前添加的请求头等信息都会失效,需要在 Selenium 中重新添加

    展开全文
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