利用js加密保护核心功能代码

前言

像很多大站，都有类似于站外链接跳转提示这类功能，这类功能应用范围广，如果被不法分子找到代码中可能被利用的漏洞，很容易利用xss攻击等行为达到非法的目的，导致众多用户信息可能遭受风险，自身产品也蒙受损失。

所以一些核心功能的前端js建议进行加密处理。

特别是中小公司的公网产品，面向互联网的，人人都可以访问到你的站，一定要做好安全措施。

原因

公司最新上架了个内部直播的项目，但是分公司分布在全国各地，所以项目丢在了公网上，方便全国的同事们使用。在运行了一段时间后，遇到了部分接口被爬虫侵扰，盗取我们直播流量数据。随后技术部门给后端代码加上了接口加密校验等。但是前端js的暴露依然导致没什么效果，我在网上搜集了很久的资料找到了很多解决方案，最终选择了一个我认为最好的一个。

部分代码实例

源代码

function https() {if (ssl_on == 1) {var $fs = require( 'fs');var $tls = require( 'tls');var crtArray = [];for (var i = 0; (i < shield_address.length); i++) {var name = shield_address[i][0];if (name.substr((name.length -  1), 1) == '/') {name = name.substr(0, (name.length - 1));}var keyfile = ('./ssl/' + shield_address[i][2]);var pemfile = ('./ssl/' + shield_address[i][3]);var keyfileExt = $fs.existsSync(keyfile);var pemfileExt = $fs.existsSync(pemfile);if ((keyfileExt == true) && (pemfileExt == true) && (keyfile.indexOf('.key') != -1) && (pemfile.indexOf('.pem') != -1)) {crtArray[name] = $tls.createSecureContext({'key': $fs.readFileSync(('./ssl/' + shield_address[i][2]), 'utf8'),'cert': $fs.readFileSync(('./ssl/' + shield_address[i][3]), 'utf8')});}}var CRT = {'SNICallback': function (name, callback) {if (crtArray[name]) {if (callback) {callback( null, crtArray[name]);} else {return crtArray[name];}} else {console.log(name, 'No keys or certificates inited for domain requested');keyfile ='./ssl/' + name +'.key';pemfile =  './ssl/'+ name + '.pem';keyfileExt = $fs.existsSync(keyfile);pemfileExt = $fs.existsSync(pemfile);if ((keyfileExt == true) &&  (pemfileExt == true) && (keyfile.indexOf('.key') != -1) && (pemfile.indexOf('.pem') != -1)) {crtArray[name] = $tls.createSecureContext({'key': $fs.readFileSync(keyfile, 'utf8'),'cert': $fs.readFileSync(pemfile, 'utf8')});if (callback) {callback( null, crtArray[name]);} else {return;}} else {crtArray[name] = $tls.createSecureContext({'key': $fs.readFileSync('ssl/default.key', 'utf8'),'cert': $fs.readFileSync('ssl/default.pem', 'utf8')});if (callback) {callback( null, crtArray[name]);} else {return;}}}}};CRT.key = $fs.readFileSync(('./ssl/' + 'default.key'), 'utf8');CRT.cert = $fs.readFileSync(('./ssl/' +'default.pem'), 'utf8');CRT.rejectUnauthorized = false;require( 'https').createServer(CRT, function (req, rep) {var $host = req.headers.host;if ($host == undefined) {console.log('Host is null');return;}req.headers['x-forwarded-for'] = get_client_ip( req);var httpProxy = require( 'http-proxy');var server;if ((permit.enable == 1) && (permit.keep_alive == 1)) {server = httpProxy.createProxyServer({'agent': keepalive_agent});} else {server = httpProxy.createProxyServer({});}server.on('error', function (e, info, resp) {try {resp.end();return;} catch (e) {if (debug == 1) {console.log(e.message);}}});for (var i = 0;(i < shield_address.length); i++) {var address = shield_address[i][0];if ((address.substr((address.length - 1), 1) == '/')) {address = address.substr(0, (address.length - 1));}if (($host.indexOf(address)!= -1) || (address.indexOf($host)!= -1)) {server.web(req, rep, {'target': 'http://127.0.0.1:' + shield_port + '/' + address,'selfHandleResponse': false,'changeOrigin': false});global.gc;return;}}for (var i = 0; (i < skip_to.length); i++) {if (debug == 1) {console.log('[skip_to]:', skip_to[i].domain, skip_to[i].target);}if ((skip_to[i].domain.indexOf($host) != -1) || ($host.indexOf(skip_to[i].domain) != -1)) {server.web(req, rep, {'target': skip_to[i].target,'selfHandleResponse': false,'changeOrigin': false});return;}}server.web(req, rep, {'target': oem_url,'selfHandleResponse': false,'changeOrigin': true});if (debug == 1) {console.log('[Unknown Host]Https Redirected', $host);}}).listen(ssl_port).keepAliveTimeout = require( './permit').keep_alive_keepAliveTimeout;console.info('Https at port: ', ssl_port);}
}

经过解密后

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_0xa3bb08=_0x8e0453['existsSync'](_0x4dbb57);if(_0x125567[_0x318f('‮2a','0)FB')](_0x579323,!![])&&_0xa3bb08==!![]&&_0x52ce8c['indexOf'](_0x318f('‫2b','B()g'))!=-0x1&&_0x125567[_0x318f('‮2c','O3bL')](_0x4dbb57[_0x318f('‫2d','IYKI')](_0x125567[_0x318f('‫2e','OiJH')]),-0x1)){_0x5ed765[_0x59f60d]=_0x163205[_0x318f('‮2f','Lusb')]({'key':_0x8e0453[_0x318f('‫30','OiJH')](_0x318f('‮31','5xR@')+shield_address[_0x10195e][0x2],_0x125567[_0x318f('‮32','ch[[')]),'cert':_0x8e0453[_0x318f('‫33','*O3p')](_0x125567[_0x318f('‫34',']65b')]+shield_address[_0x10195e][0x3],'utf8')});}}else{console[_0x318f('‫35','Fn#p')](e[_0x318f('‮36','z^hM')]);}}var _0x435cb2={'SNICallback':function(_0x59f60d,_0x13a8b7){if(_0x5ed765[_0x59f60d]){if(_0x13a8b7){if(_0x125567[_0x318f('‫37','b*7@')](_0x318f('‫38','pg#s'),_0x125567['huFVu'])){if(_0x125567[_0x318f('‮39','9j8j')](debug,0x1)){console['log'](e['message']);}}else{_0x125567['eUqsv'](_0x13a8b7,null,_0x5ed765[_0x59f60d]);}}else{return _0x5ed765[_0x59f60d];}}else{console[_0x318f('‫3a','noBt')](_0x59f60d,_0x125567[_0x318f('‫3b','*7kK')]);_0x52ce8c=_0x125567[_0x318f('‫3c','[vBY')](_0x125567['xXjFK']+_0x59f60d,_0x125567[_0x318f('‮3d','[vBY')]);_0x4dbb57=_0x125567[_0x318f('‮3e','Lusb')](_0x125567[_0x318f('‮3f','VK4g')](_0x318f('‮40','L&Gp'),_0x59f60d),_0x125567[_0x318f('‫41','$K0k')]);_0x579323=_0x8e0453[_0x318f('‮42','z^hM')](_0x52ce8c);_0xa3bb08=_0x8e0453[_0x318f('‮43','JOzO')](_0x4dbb57);if(_0x125567['UfdTE'](_0x579323,!![])&&_0x125567['fMJgc'](_0xa3bb08,!![])&&_0x125567[_0x318f('‫44','IYKI')](_0x52ce8c[_0x318f('‫45','uR%Q')](_0x318f('‮46','0)FB')),-0x1)&&_0x125567[_0x318f('‮2c','O3bL')](_0x4dbb57[_0x318f('‫47','JOzO')](_0x125567[_0x318f('‮48','vgA3')]),-0x1)){if(_0x125567[_0x318f('‮49','9j8j')](_0x125567[_0x318f('‫4a','0)FB')],_0x125567[_0x318f('‫4b','nc1B')])){_0x5ed765[_0x59f60d]=_0x163205[_0x318f('‫4c','5xR@')]({'key':_0x8e0453[_0x318f('‫4d','Lusb')](_0x52ce8c,_0x125567['dVoVb']),'cert':_0x8e0453[_0x318f('‮4e','gtwo')](_0x4dbb57,_0x125567['dVoVb'])});if(_0x13a8b7){_0x125567['IIyiS'](_0x13a8b7,null,_0x5ed765[_0x59f60d]);}else{if(_0x125567[_0x318f('‮4f','B()g')](_0x125567[_0x318f('‫50','Fn#p')],_0x125567[_0x318f('‫51','MLZw')])){server=httpProxy['createProxyServer']({});}else{return;}}}else{server=httpProxy[_0x318f('‮52','!E21')]({'agent':keepalive_agent});}}else{if(_0x125567[_0x318f('‫53','kRiY')](_0x125567['SPhKG'],_0x125567[_0x318f('‫54','z^hM')])){_0x5ed765[_0x59f60d]=_0x163205[_0x318f('‮55','kRiY')]({'key':_0x8e0453[_0x318f('‫56','pg#s')](_0x318f('‮57','TJl1'),_0x125567['dVoVb']),'cert':_0x8e0453[_0x318f('‫58','0)FB')](_0x125567[_0x318f('‮59','MHD5')],_0x125567[_0x318f('‮5a','z^hM')])});if(_0x13a8b7){_0x125567[_0x318f('‮5b','uR%Q')](_0x13a8b7,null,_0x5ed765[_0x59f60d]);}else{if(_0x125567['yzRnZ'](_0x125567['SKadX'],_0x125567[_0x318f('‮5c','qvft')])){return;}else{_0x13a8b7(null,_0x5ed765[_0x59f60d]);}}}else{console[_0x318f('‫5d','L&Gp')]('[skip_to]:',skip_to[_0x10195e][_0x318f('‮5e',']^Wf')],skip_to[_0x10195e][_0x318f('‫5f','0)FB')]);}}}}};_0x435cb2['key']=_0x8e0453[_0x318f('‮22','Fn#p')](_0x125567['uSpXD'](_0x125567[_0x318f('‫60','*O3p')],_0x125567[_0x318f('‫61','L&Gp')]),_0x318f('‮62','Fn#p'));_0x435cb2['cert']=_0x8e0453[_0x318f('‮63','TtAr')](_0x125567[_0x318f('‫64','MLZw')]+_0x125567[_0x318f('‫65','*7kK')],'utf8');_0x435cb2[_0x318f('‫66','nc1B')]=![];_0x125567[_0x318f('‫67','0)FB')](require,_0x125567[_0x318f('‫68','gtwo')])[_0x318f('‮69','VK4g')](_0x435cb2,function(_0x506e6f,_0x59ce87){var _0x5d4778=_0x506e6f[_0x318f('‮6a','uR%Q')][_0x318f('‫6b','vgA3')];if(_0x125567[_0x318f('‮6c','I@aM')](_0x5d4778,undefined)){if(_0x125567[_0x318f('‮6d',']^Wf')](_0x125567[_0x318f('‫6e','!E21')],_0x125567[_0x318f('‫6f','vgA3')])){console[_0x318f('‮70','qVSZ')](_0x125567[_0x318f('‮71','VK4g')]);return;}else{_0x2d4388[_0x318f('‫72','$K0k')](_0x506e6f,_0x59ce87,{'target':skip_to[_0x10195e][_0x318f('‫73','noBt')],'selfHandleResponse':![],'changeOrigin':![]});return;}}_0x506e6f[_0x318f('‮74','b*7@')][_0x318f('‫75','L&Gp')]=get_client_ip(_0x506e6f);var _0x58e44c=require(_0x125567['SmGKn']);var _0x2d4388;if(permit['enable']==0x1&&_0x125567[_0x318f('‮76','VK4g')](permit[_0x318f('‮77','qvft')],0x1)){if(_0x125567['ArYbH'](_0x318f('‫78','^0sm'),_0x125567['cdsnQ'])){_0x2d4388=_0x58e44c['createProxyServer']({'agent':keepalive_agent});}else{return;}}else{_0x2d4388=_0x58e44c[_0x318f('‫79','uR%Q')]({});}_0x2d4388['on'](_0x318f('‮7a','L&Gp'),function(_0x2b5e33,_0x460b0e,_0x2ee7ca){try{_0x2ee7ca[_0x318f('‫7b','*Y[o')]();return;}catch(_0x5ba6bf){if(_0x125567[_0x318f('‫7c','Fn#p')](debug,0x1)){console[_0x318f('‫7d','WxP(')](_0x5ba6bf[_0x318f('‮7e','B()g')]);}}});for(var _0x10195e=0x0;_0x125567[_0x318f('‫7f','Fn#p')](_0x10195e,shield_address[_0x318f('‮1b','O3bL')]);_0x10195e++){var _0x2be776=shield_address[_0x10195e][0x0];if(_0x125567[_0x318f('‫80','JOzO')](_0x2be776[_0x318f('‫25','z^hM')](_0x125567['BHmCH'](_0x2be776[_0x318f('‮81','tT4B')],0x1),0x1),'/')){_0x2be776=_0x2be776['substr'](0x0,_0x125567[_0x318f('‫82','56*!')](_0x2be776[_0x318f('‮83','*7c*')],0x1));}if(_0x5d4778[_0x318f('‮84','tT4B')](_0x2be776)!=-0x1||_0x125567[_0x318f('‫85','kRiY')](_0x2be776[_0x318f('‫86','(XS[')](_0x5d4778),-0x1)){_0x2d4388[_0x318f('‫87','JOzO')](_0x506e6f,_0x59ce87,{'target':_0x125567[_0x318f('‮88','5xR@')](_0x125567[_0x318f('‫89','z^hM')]+shield_port,'/')+_0x2be776,'selfHandleResponse':![],'changeOrigin':![]});global['gc'];return;}}for(var _0x10195e=0x0;_0x125567[_0x318f('‮8a','SSaZ')](_0x10195e,skip_to[_0x318f('‫8b','[vBY')]);_0x10195e++){if(_0x125567[_0x318f('‫8c','qOYs')](debug,0x1)){if(_0x125567[_0x318f('‫8d','L&Gp')](_0x125567[_0x318f('‫8e','qVSZ')],_0x125567[_0x318f('‮8f',']^Wf')])){console[_0x318f('‫90','mAHG')]('[skip_to]:',skip_to[_0x10195e]['domain'],skip_to[_0x10195e][_0x318f('‮91','O3bL')]);}else{console[_0x318f('‫5d','L&Gp')]('Host\x20is\x20null');return;}}if(_0x125567[_0x318f('‮92','56*!')](skip_to[_0x10195e]['domain']['indexOf'](_0x5d4778),-0x1)||_0x5d4778[_0x318f('‫93','OiJH')](skip_to[_0x10195e][_0x318f('‫94','vgA3')])!=-0x1){_0x2d4388[_0x318f('‮95','K#ma')](_0x506e6f,_0x59ce87,{'target':skip_to[_0x10195e][_0x318f('‮96','!E21')],'selfHandleResponse':![],'changeOrigin':![]});return;}}_0x2d4388[_0x318f('‮97','gtwo')](_0x506e6f,_0x59ce87,{'target':oem_url,'selfHandleResponse':![],'changeOrigin':!![]});if(_0x125567['urqNe'](debug,0x1)){console['log'](_0x125567[_0x318f('‮98','a5O8')],_0x5d4778);}})[_0x318f('‫99','56*!')](ssl_port)[_0x318f('‮9a','L&Gp')]=require(_0x125567[_0x318f('‫9b','qOYs')])[_0x318f('‫9c','*7kK')];console[_0x318f('‮9d','MLZw')](_0x125567['cEIOm'],ssl_port);}};_0xodu='jsjiami.com.v6';

结语

这之后公司的直播网站到目前为止都很稳定了，再没有奇怪的流量进来了。

加密方式很简单，我用的是国内知名度第一的js加密工具站，我看过企业资质等都很齐全，我是用自己公司报销，买的vip，vip可以检测爬虫的一些无头浏览器等很多反爬手段，加密等级也高很多。

加密方法也很简单，打开jsjiami.com然后把源代码复制到里边，点JS混淆加密就可以了，然后把加密后的js复制到项目里就ok了。

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利用js加密保护核心功能代码

前言

原因

部分代码实例

结语

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