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
jQuery JSON的解析方式分享
Apr 05 Javascript
JS模拟实现Select效果代码
Sep 24 Javascript
全国省市二级联动下拉菜单 js版
May 10 Javascript
Bootstrap+jfinal退出系统弹出确认框的实现方法
May 30 Javascript
JS构造函数与原型prototype的区别介绍
Jul 04 Javascript
瀑布流的实现方式(原生js+jquery+css3)
Jun 28 Javascript
js表单元素checked、radio被选中的几种方法(详解)
Aug 22 Javascript
纯js实现画一棵树的示例
Sep 05 Javascript
React 使用browserHistory项目访问404问题解决
Jun 01 Javascript
详解使用VueJS开发项目中的兼容问题
Aug 02 Javascript
vue最简单的前后端交互示例详解
Oct 11 Javascript
JavaScript代理模式原理与用法实例详解
Mar 10 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
zf框架的校验器InArray使用示例
2014/03/13 PHP
php对称加密算法示例
2014/05/07 PHP
php制作文本式留言板
2015/03/18 PHP
Yii2实现增删改查后留在当前页的方法详解
2017/01/13 PHP
jQuery库与其他JS库冲突的解决办法
2010/02/07 Javascript
图片在浏览器中底部对齐 解决方法之一
2011/11/30 Javascript
javascript代码运行不出来执行错误的可能情况整理
2013/10/18 Javascript
如何用JavaScript定义一个类
2014/09/12 Javascript
js中split和replace的用法实例
2015/02/28 Javascript
JavaScript通过join函数连接数组里所有元素的方法
2015/03/20 Javascript
JavaScript实现页面跳转的方式汇总
2016/05/16 Javascript
详解webpack es6 to es5支持配置
2017/05/04 Javascript
实现微信小程序的wxml文件和wxss文件在webstrom的支持
2017/06/12 Javascript
微信小程序实现多宫格抽奖活动
2020/04/15 Javascript
使用classList来实现两个按钮样式的切换方法
2018/01/24 Javascript
详解使用VUE搭建后台管理系统(vue-cli更新至3.0)
2018/08/22 Javascript
如何测量vue应用运行时的性能
2019/06/21 Javascript
angular6开发steps步骤条组件
2019/07/04 Javascript
mpvue网易云短信接口实现小程序短信登录的示例代码
2020/04/03 Javascript
JavaScript实现答题评分功能页面
2020/06/24 Javascript
在Python中将函数作为另一个函数的参数传入并调用的方法
2019/01/22 Python
Python面向对象思想与应用入门教程【类与对象】
2019/04/12 Python
Tensorflow加载Vgg预训练模型操作
2020/05/26 Python
如何使用python记录室友的抖音在线时间
2020/06/29 Python
Python基于traceback模块获取异常信息
2020/07/23 Python
希尔顿酒店中国网站:Hilton中国
2017/03/11 全球购物
Otticanet意大利:最顶尖的世界名牌眼镜, 能得到打折季的价格
2019/03/10 全球购物
澳大利亚在线划船、露营和钓鱼商店:BCF Australia
2020/03/22 全球购物
实习自我鉴定模板
2013/09/28 职场文书
财务担保书范文
2014/04/02 职场文书
合作协议书
2014/04/23 职场文书
关于奉献的演讲稿
2014/05/21 职场文书
竞聘演讲稿怎么写
2014/08/28 职场文书
县委常委班子对照检查材料思想汇报
2014/09/28 职场文书
幼儿园欢迎词范文
2015/01/26 职场文书
MongoDB orm框架的注意事项及简单使用
2021/06/20 MongoDB