JavaScript实现的MD5算法完整实例


Posted in Javascript onFebruary 02, 2016

本文实例讲述了JavaScript实现MD5算法的方法。分享给大家供大家参考,具体如下:

/**
*
* MD5 (Message-Digest Algorithm)
* http://www.webtoolkit.info/
*
**/
var MD5 = function (string) {
 function RotateLeft(lValue, iShiftBits) {
  return (lValue<<iShiftBits) | (lValue>>>(32-iShiftBits));
 }
 function AddUnsigned(lX,lY) {
  var lX4,lY4,lX8,lY8,lResult;
  lX8 = (lX & 0x80000000);
  lY8 = (lY & 0x80000000);
  lX4 = (lX & 0x40000000);
  lY4 = (lY & 0x40000000);
  lResult = (lX & 0x3FFFFFFF)+(lY & 0x3FFFFFFF);
  if (lX4 & lY4) {
   return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
  }
  if (lX4 | lY4) {
   if (lResult & 0x40000000) {
    return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
   } else {
    return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
   }
  } else {
   return (lResult ^ lX8 ^ lY8);
  }
  }
  function F(x,y,z) { return (x & y) | ((~x) & z); }
  function G(x,y,z) { return (x & z) | (y & (~z)); }
  function H(x,y,z) { return (x ^ y ^ z); }
 function I(x,y,z) { return (y ^ (x | (~z))); }
 function FF(a,b,c,d,x,s,ac) {
  a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac));
  return AddUnsigned(RotateLeft(a, s), b);
 };
 function GG(a,b,c,d,x,s,ac) {
  a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac));
  return AddUnsigned(RotateLeft(a, s), b);
 };
 function HH(a,b,c,d,x,s,ac) {
  a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac));
  return AddUnsigned(RotateLeft(a, s), b);
 };
 function II(a,b,c,d,x,s,ac) {
  a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac));
  return AddUnsigned(RotateLeft(a, s), b);
 };
 function ConvertToWordArray(string) {
  var lWordCount;
  var lMessageLength = string.length;
  var lNumberOfWords_temp1=lMessageLength + 8;
  var lNumberOfWords_temp2=(lNumberOfWords_temp1-(lNumberOfWords_temp1 % 64))/64;
  var lNumberOfWords = (lNumberOfWords_temp2+1)*16;
  var lWordArray=Array(lNumberOfWords-1);
  var lBytePosition = 0;
  var lByteCount = 0;
  while ( lByteCount < lMessageLength ) {
   lWordCount = (lByteCount-(lByteCount % 4))/4;
   lBytePosition = (lByteCount % 4)*8;
   lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount)<<lBytePosition));
   lByteCount++;
  }
  lWordCount = (lByteCount-(lByteCount % 4))/4;
  lBytePosition = (lByteCount % 4)*8;
  lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80<<lBytePosition);
  lWordArray[lNumberOfWords-2] = lMessageLength<<3;
  lWordArray[lNumberOfWords-1] = lMessageLength>>>29;
  return lWordArray;
 };
 function WordToHex(lValue) {
  var WordToHexValue="",WordToHexValue_temp="",lByte,lCount;
  for (lCount = 0;lCount<=3;lCount++) {
   lByte = (lValue>>>(lCount*8)) & 255;
   WordToHexValue_temp = "0" + lByte.toString(16);
   WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length-2,2);
  }
  return WordToHexValue;
 };
 function Utf8Encode(string) {
  string = string.replace(/\r\n/g,"\n");
  var utftext = "";
  for (var n = 0; n < string.length; n++) {
   var c = string.charCodeAt(n);
   if (c < 128) {
    utftext += String.fromCharCode(c);
   }
   else if((c > 127) && (c < 2048)) {
    utftext += String.fromCharCode((c >> 6) | 192);
    utftext += String.fromCharCode((c & 63) | 128);
   }
   else {
    utftext += String.fromCharCode((c >> 12) | 224);
    utftext += String.fromCharCode(((c >> 6) & 63) | 128);
    utftext += String.fromCharCode((c & 63) | 128);
   }
  }
  return utftext;
 };
 var x=Array();
 var k,AA,BB,CC,DD,a,b,c,d;
 var S11=7, S12=12, S13=17, S14=22;
 var S21=5, S22=9 , S23=14, S24=20;
 var S31=4, S32=11, S33=16, S34=23;
 var S41=6, S42=10, S43=15, S44=21;
 string = Utf8Encode(string);
 x = ConvertToWordArray(string);
 a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476;
 for (k=0;k<x.length;k+=16) {
  AA=a; BB=b; CC=c; DD=d;
  a=FF(a,b,c,d,x[k+0], S11,0xD76AA478);
  d=FF(d,a,b,c,x[k+1], S12,0xE8C7B756);
  c=FF(c,d,a,b,x[k+2], S13,0x242070DB);
  b=FF(b,c,d,a,x[k+3], S14,0xC1BDCEEE);
  a=FF(a,b,c,d,x[k+4], S11,0xF57C0FAF);
  d=FF(d,a,b,c,x[k+5], S12,0x4787C62A);
  c=FF(c,d,a,b,x[k+6], S13,0xA8304613);
  b=FF(b,c,d,a,x[k+7], S14,0xFD469501);
  a=FF(a,b,c,d,x[k+8], S11,0x698098D8);
  d=FF(d,a,b,c,x[k+9], S12,0x8B44F7AF);
  c=FF(c,d,a,b,x[k+10],S13,0xFFFF5BB1);
  b=FF(b,c,d,a,x[k+11],S14,0x895CD7BE);
  a=FF(a,b,c,d,x[k+12],S11,0x6B901122);
  d=FF(d,a,b,c,x[k+13],S12,0xFD987193);
  c=FF(c,d,a,b,x[k+14],S13,0xA679438E);
  b=FF(b,c,d,a,x[k+15],S14,0x49B40821);
  a=GG(a,b,c,d,x[k+1], S21,0xF61E2562);
  d=GG(d,a,b,c,x[k+6], S22,0xC040B340);
  c=GG(c,d,a,b,x[k+11],S23,0x265E5A51);
  b=GG(b,c,d,a,x[k+0], S24,0xE9B6C7AA);
  a=GG(a,b,c,d,x[k+5], S21,0xD62F105D);
  d=GG(d,a,b,c,x[k+10],S22,0x2441453);
  c=GG(c,d,a,b,x[k+15],S23,0xD8A1E681);
  b=GG(b,c,d,a,x[k+4], S24,0xE7D3FBC8);
  a=GG(a,b,c,d,x[k+9], S21,0x21E1CDE6);
  d=GG(d,a,b,c,x[k+14],S22,0xC33707D6);
  c=GG(c,d,a,b,x[k+3], S23,0xF4D50D87);
  b=GG(b,c,d,a,x[k+8], S24,0x455A14ED);
  a=GG(a,b,c,d,x[k+13],S21,0xA9E3E905);
  d=GG(d,a,b,c,x[k+2], S22,0xFCEFA3F8);
  c=GG(c,d,a,b,x[k+7], S23,0x676F02D9);
  b=GG(b,c,d,a,x[k+12],S24,0x8D2A4C8A);
  a=HH(a,b,c,d,x[k+5], S31,0xFFFA3942);
  d=HH(d,a,b,c,x[k+8], S32,0x8771F681);
  c=HH(c,d,a,b,x[k+11],S33,0x6D9D6122);
  b=HH(b,c,d,a,x[k+14],S34,0xFDE5380C);
  a=HH(a,b,c,d,x[k+1], S31,0xA4BEEA44);
  d=HH(d,a,b,c,x[k+4], S32,0x4BDECFA9);
  c=HH(c,d,a,b,x[k+7], S33,0xF6BB4B60);
  b=HH(b,c,d,a,x[k+10],S34,0xBEBFBC70);
  a=HH(a,b,c,d,x[k+13],S31,0x289B7EC6);
  d=HH(d,a,b,c,x[k+0], S32,0xEAA127FA);
  c=HH(c,d,a,b,x[k+3], S33,0xD4EF3085);
  b=HH(b,c,d,a,x[k+6], S34,0x4881D05);
  a=HH(a,b,c,d,x[k+9], S31,0xD9D4D039);
  d=HH(d,a,b,c,x[k+12],S32,0xE6DB99E5);
  c=HH(c,d,a,b,x[k+15],S33,0x1FA27CF8);
  b=HH(b,c,d,a,x[k+2], S34,0xC4AC5665);
  a=II(a,b,c,d,x[k+0], S41,0xF4292244);
  d=II(d,a,b,c,x[k+7], S42,0x432AFF97);
  c=II(c,d,a,b,x[k+14],S43,0xAB9423A7);
  b=II(b,c,d,a,x[k+5], S44,0xFC93A039);
  a=II(a,b,c,d,x[k+12],S41,0x655B59C3);
  d=II(d,a,b,c,x[k+3], S42,0x8F0CCC92);
  c=II(c,d,a,b,x[k+10],S43,0xFFEFF47D);
  b=II(b,c,d,a,x[k+1], S44,0x85845DD1);
  a=II(a,b,c,d,x[k+8], S41,0x6FA87E4F);
  d=II(d,a,b,c,x[k+15],S42,0xFE2CE6E0);
  c=II(c,d,a,b,x[k+6], S43,0xA3014314);
  b=II(b,c,d,a,x[k+13],S44,0x4E0811A1);
  a=II(a,b,c,d,x[k+4], S41,0xF7537E82);
  d=II(d,a,b,c,x[k+11],S42,0xBD3AF235);
  c=II(c,d,a,b,x[k+2], S43,0x2AD7D2BB);
  b=II(b,c,d,a,x[k+9], S44,0xEB86D391);
  a=AddUnsigned(a,AA);
  b=AddUnsigned(b,BB);
  c=AddUnsigned(c,CC);
  d=AddUnsigned(d,DD);
 }
 var temp = WordToHex(a)+WordToHex(b)+WordToHex(c)+WordToHex(d);
 return temp.toLowerCase();
}

PS:这里再为大家提供2款MD5加密工具,需要的朋友可以参考一下:

MD5在线加密工具:

在线MD5/hash/SHA-1/SHA-2/SHA-256/SHA-512/SHA-3/RIPEMD-160加密工具:

希望本文所述对大家JavaScript程序设计有所帮助。

Javascript 相关文章推荐
Javascript 学习书 推荐
Jun 13 Javascript
jquery的ajax从纯真网(cz88.net)获取IP地址对应地区名
Dec 02 Javascript
原生javaScript做得动态表格(注释写的很清楚)
Dec 29 Javascript
JavaScript中的getTimezoneOffset()方法使用详解
Jun 10 Javascript
js+canvas绘制矩形的方法
Jan 28 Javascript
jQuery滚动监听实现商城楼梯式导航效果
Mar 06 Javascript
js实现倒计时效果(小于10补零)
Mar 08 Javascript
JavaScript实现图片本地预览功能【不用上传至服务器】
Sep 20 Javascript
vue中的scope使用详解
Oct 29 Javascript
新年快乐! javascript实现超级炫酷的3D烟花特效
Jan 30 Javascript
了解javascript中变量及函数的提升
May 27 Javascript
微信小程序中使用 async/await的方法实例分析
May 06 Javascript
javascript禁止超链接跳转的方法
Feb 02 #Javascript
JS组件Bootstrap Table使用方法详解
Feb 02 #Javascript
Node.js实现JS文件合并小工具
Feb 02 #Javascript
体验jQuery和AngularJS的不同点及AngularJS的迷人之处
Feb 02 #Javascript
JavaScript通过代码调用Flash显示的方法
Feb 02 #Javascript
AngularJS中$interval的用法详解
Feb 02 #Javascript
AngularJS中处理多个promise的方式
Feb 02 #Javascript
You might like
PHP4 与 MySQL 数据库操作函数详解
2006/10/09 PHP
php在线生成ico文件的代码
2007/10/09 PHP
PHP获取不了React Native Fecth参数的解决办法
2016/08/26 PHP
PHP substr()函数参数解释及用法讲解
2017/11/23 PHP
document 和 document.all 分别什么时候用
2006/06/22 Javascript
JavaScript进阶教程(第四课第一部分)
2007/04/05 Javascript
基于jquery的内容循环滚动小模块(仿新浪微博未登录首页滚动微博显示)
2011/03/28 Javascript
动态添加删除表格行的js实现代码
2014/02/28 Javascript
给html超链接设置事件不使用href来完成跳
2014/04/20 Javascript
原生js和jQuery写的网页选项卡特效对比
2015/04/27 Javascript
js实现兼容性好的微软官网导航下拉菜单效果
2015/09/07 Javascript
js事件处理程序跨浏览器解决方案
2016/03/27 Javascript
jquery ezUI 双击行记录弹窗查看明细的实现方法
2016/06/01 Javascript
Nodejs进阶:express+session实现简易登录身份认证
2017/04/24 NodeJs
jQuery制作input提示内容(兼容IE8以上)
2017/07/05 jQuery
详解Express笔记之动态渲染HTML(新手入坑)
2018/12/13 Javascript
微信小程序HTTP接口请求封装代码实例
2019/09/05 Javascript
在Express中提供静态文件的实现方法
2019/10/17 Javascript
vue用elementui写form表单时,在label里添加空格操作
2020/08/13 Javascript
谈谈JavaScript中的函数
2020/09/08 Javascript
Python中for循环详解
2014/01/17 Python
Python跳出循环语句continue与break的区别
2014/08/25 Python
Python格式化css文件的方法
2015/03/10 Python
Python3导入CSV文件的实例(跟Python2有些许的不同)
2018/06/22 Python
python整小时 整天时间戳获取算法示例
2019/02/20 Python
Python时间差中seconds和total_seconds的区别详解
2019/12/26 Python
python encrypt 实现AES加密的实例详解
2020/02/20 Python
如何将tensorflow训练好的模型移植到Android (MNIST手写数字识别)
2020/04/22 Python
Python unittest如何生成HTMLTestRunner模块
2020/09/08 Python
css3实现平移效果(transfrom:translate)的示例
2020/11/13 HTML / CSS
英国PC组件和在线电脑商店:SCAN
2019/04/18 全球购物
库存图片、照片、矢量图、视频和音乐:Shutterstock
2021/02/12 全球购物
超市后勤自我鉴定
2014/01/17 职场文书
办公用房租赁协议书
2014/11/29 职场文书
中秋节随笔
2015/08/15 职场文书
Navicat Premium自定义 sql 标签的创建方式
2022/09/23 数据库