博客园加密登录--jsencrypt

博客园加密登录--jsencrypt
 
问题由来   
前几天在做项目的时候,发现一般做登录的时候只是一个非常简单的`form`表单,但是这样肯定是不安全的!所以想去看看其他比较流行的网站是怎么实现的。说到安全,我第一个想到的就是去看支付宝,毕竟人家那么大的系统并且管理的是money啊! 结果,支付宝的登录确实复杂,chrome的F12竟然找不到。算了,看看我大博客园吧!
 
下面就是从博客园登录页面copy下来的js登录代码片段
博客园登录时采用的ajax发信http登录请求,就是采用jsencypt加密,以保护用户登录账号安全,一下是js片段代码
 
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var return_url = 'http://home.cnblogs.com/u/wxb0328/' ;
        var ajax_url = '/user' + '/signin' ;
        var enable_captcha = false ;
        var is_in_progress = false ;
 
        function setFocus() {
            document.getElementById( 'input1' ).focus();
        }
 
        function check_enter(event) {
            if (event.keyCode == 13) {
                var target = event.target || event.srcElement;
                if (target.id == "input1" ) {
                    if (document.getElementById( 'input1' ).value == '' ) {
                        $( '#tip_input1' ).html( "请输入登录用户名" );
                        return ;
                    }
                    else if (document.getElementById( 'input2' ).value == '' ) {
                        document.getElementById( "input2" ).focus();
                        return ;
                    }
                }
                if (target.id == "input2" ) {
                    if (document.getElementById( 'input2' ).value == '' ) {
                        $( '#tip_input2' ).html( "请输入密码" );
                        return ;
                    }
                }
                signin_go();
            }
        }
 
        function signin_go() {
            if (is_in_progress){
                return ;
            }
 
            $( '#tip_input1' ).html( '' );
            $( '#tip_input2' ).html( '' );
 
            var input1 = $.trim($( '#input1' ).val());
            if (!input1) {
                $( '#tip_input1' ).html( "请输入登录用户名" );
                $( '#input1' ).focus();
                return ;
            }
            var input2 = $.trim($( '#input2' ).val());
            if (!input2) {
                $( '#tip_input2' ).html( "请输入密码" );
                $( '#input2' ).focus();
                return ;
            }
 
            if (enable_captcha)
            {
                var captchaCode = $.trim($( '#captcha_code_input' ).val());
                if (!captchaCode)
                {
                    $( '#tip_captcha_code_input' ).html( "请输入验证码" );
                    $( '#captcha_code_input' ).focus();
                    return ;
                }
            }
 
            $( '#tip_btn' ).html( '提交中...' );
 
            var encrypt = new JSEncrypt();
            encrypt.setPublicKey( 'MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCp0wHYbg/NOPO3nzMD3dndwS0MccuMeXCHgVlGOoYyFwLdS24Im2e7YyhB0wrUsyYf0/nhzCzBK8ZC9eCWqd0aHbdgOQT6CuFQBMjbyGYvlVYU2ZP7kG9Ft6YV6oc9ambuO7nPZh+bvXH0zDKfi02prknrScAKC0XhadTHT3Al0QIDAQAB' );
            var encrypted_input1 = encrypt.encrypt($( '#input1' ).val());
            var encrypted_input2 = encrypt.encrypt($( '#input2' ).val());
            var ajax_data = {
                input1: encrypted_input1,
                input2: encrypted_input2,
                remember: $( '#remember_me' ).prop( 'checked' )
            };
 
            if (enable_captcha){
                var captchaObj = $( "#captcha_code_input" ).get(0).Captcha;
                ajax_data.captchaId = captchaObj.Id;
                ajax_data.captchaInstanceId = captchaObj.InstanceId;
                ajax_data.captchaUserInput = $( "#captcha_code_input" ).val();
            }
            is_in_progress = true ;
            $.ajax({
                url: ajax_url,
                type: 'post' ,
                data: JSON.stringify(ajax_data),
                contentType: 'application/json; charset=utf-8' ,
                dataType: 'json' ,
                headers: {
                    'VerificationToken' : 'v8o6Zbt1bkghAprMyn-NuKazyejPBAjz21CtWG81iKijaJ5u4u37q22GSdkbB9aqIc9deUoBETwjJxGFh0jLPZTSnXc1:EnF2TIFu9G2Kd0NgQuSFsXzcWtXcEj7AdxylV6Rlt7k5rcmZOu3j9bcoPO1kiBKGjg1V0WFB9dj8rWXIW34di1ONV6c1'
                },
                success: function (data) {                   
                    if (data.success) {
                        $( '#tip_btn' ).html( '登录成功,正在重定向...' );
                        location.href = return_url;
                    } else {
                        $( '#tip_btn' ).html(data.message + "

联系 [email protected]"
);
                        is_in_progress = false ;
                        if (enable_captcha)
                        {
                            captchaObj.ReloadImage();
                        }
                    }
                },
                error: function (xhr) {
                    is_in_progress = false ;
                    $( '#tip_btn' ).html( '抱歉!出错!联系 [email protected]' );
                }
            });
        }
 
        $( function () {
            $( '#signin' ).bind( 'click' , function () {
                signin_go();
            }).val( '登 录' );
 
        });
可以看到博客园使用了一个js加密类库:jsencrypt,下面就来了解一下这个类库!
 
js的一个使用OpenSSL加密,解密,秘钥生成类库      
A Javascript library to perform OpenSSL RSA Encryption, Decryption, and Key Generation
这里不对jsencrypt这个js类库做详细的介绍了,大家有兴趣可以去它的github主页学习,其实这个类库还是相对比较简单的,只要稍微看看就应该可以掌握。
 
[github主页]( https://github.com/travist/jsencrypt  )    
[官方网站]( http://travistidwell.com/jsencrypt/  )    
 
PHP关于OpenSSL相关资料
 
[PHP手册OpenSSL]( http://php.net/manual/zh/book.openssl.php  )  
 
关于后台PHP解密  
 
1. 学习PHP手册:[PHP手册OpenSSL]( http://php.net/manual/zh/book.openssl.php  )  
2. 参考博客:[php rsa加密解密实例]( http://blog.csdn.net/clh604/article/details/20224735  )   
 
下面贴出我自己写的测试demo
test.html
 
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< html >
   < head >
     < title >JavaScript RSA Encryption title >
     < script src = "http://code.jquery.com/jquery-1.8.3.min.js" > script >
     < script src = "./jsencrypt.min.js" > script >
     < script type = "text/javascript" >
// 使用jsencrypt类库加密js方法,
function encryptRequest(reqUrl, data, publicKey){
     var encrypt = new JSEncrypt();
     encrypt.setPublicKey(publicKey);
     // ajax请求发送的数据对象
     var sendData = new Object();
     // 将data数组赋给ajax对象
     for(var key in data){
         sendData[key] = encrypt.encrypt(data[key]);
     }
 
       $.ajax({
             url: reqUrl,
             type: 'post',
             data: sendData,
             dataType: 'json',
             success: function (data) {                   
                 console.info(data);
             },
             error: function (xhr) {
                 console.error('出错了');
             }
         });
 
}
 
       // Call this code when the page is done loading.
       $(function() {
 
         $('#testme').click(function() {
             
             var data = [];
             data['username']= $('#username').val();
             data['passwd']= $('#passwd').val();
 
             var pkey = $('#pubkey').val();
             encryptRequest('./test.php', data, pkey);
         });
       });
     script >
   head >
   < body >
     < label for = "pubkey" >Public Key label >< br />
     < textarea id = "pubkey" rows = "15" cols = "65" >-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCBWNoG5LJ3u44Gs8PWs1MaNUQQ
+mOmh+9zWdzSt3ORbmfCDvU+ssW/6QTTgXvWWx7+Wzq/a4fCCQp72zSqXeVhWkTV
ct9Hyp/iMo5K6qOEK76z9z+tP/u99X6qazeXGVMWKkPiyZT4mKAGd/U8Mph9Z1Z5
kOluA7g7heq8PPlE9wIDAQAB
-----END PUBLIC KEY----- textarea >< br />
     < label for = "input" >Text to encrypt: label >< br />
     name:< input id = "username" name = "username" type = "text" > input >< br />
     password:< input id = "passwd" name = "passwd" type = "password" > input >< br />
     < input id = "testme" type = "button" value = "submit" />< br />
   body >
html >
 
test.php
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// 接收客户端发送过来的经过加密的登录信息
$input = $_POST ;
// 私钥是放在服务器端的,用以验证和解密客户端经过公钥加密后的信息
$private_key = '-----BEGIN RSA PRIVATE KEY-----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----- END RSA PRIVATE KEY-----';
 
// 公钥一般存放在登录页面中的一个隐藏域中,但是请注意:公钥和私钥一定要配对,且必须保证私钥的安全
$public_key = '-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCBWNoG5LJ3u44Gs8PWs1MaNUQQ
+mOmh+9zWdzSt3ORbmfCDvU+ssW/6QTTgXvWWx7+Wzq/a4fCCQp72zSqXeVhWkTV
ct9Hyp/iMo5K6qOEK76z9z+tP/u99X6qazeXGVMWKkPiyZT4mKAGd/U8Mph9Z1Z5
kOluA7g7heq8PPlE9wIDAQAB
----- END PUBLIC KEY-----';
 
/**
  * 使用PHP OpenSSL时,最好先看看手册,了解如何开启OpenSSL 和 其中的一些方法的使用
  *  具体如何使用这里不做赘述,大家去看看PHP手册,什么都就解决了
  */
$pi_key =  openssl_pkey_get_private( $private_key ); //这个函数可用来判断私钥是否是可用的,可用返回资源id Resource id 
$pu_key = openssl_pkey_get_public( $public_key ); //这个函数可用来判断公钥是否是可用的 
 
$decrypted = ""
openssl_private_decrypt( base64_decode ( $input [ 'username' ]), $decrypted , $pi_key ); //私钥解密 
// 这里的这个 $decrypted就是解密客户端发送过来的用户名,至于后续连接数据库验证登录信息的代码,这里也就省略了
echo json_encode( $decrypted );

效果

博客园加密登录--jsencrypt_第1张图片

 
 
总结
 
使用OpenSSL的方式加密可以达到比较安全的级别,在平时项目中非常有用!在以后工作中可以多多学习、使用、积累经验。
 



来自为知笔记(Wiz)



转载于:https://www.cnblogs.com/wxb0328/p/4641820.html

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