jQuery md5加密插件jQuery.md5.js用法示例

程序员文章站 2023-11-17 18:11:34

本文实例讲述了jquery md5加密插件jquery.md5.js用法。分享给大家供大家参考，具体如下：使用方法： $.(md5("你想要加密的字符串"))...

本文实例讲述了jquery md5加密插件jquery.md5.js用法。分享给大家供大家参考，具体如下：

使用方法：

$.(md5("你想要加密的字符串"));

jquery.md5.js插件代码：

/**
 * jquery md5 hash algorithm function
 * 
 *   <code>
 *     calculate the md5 hash of a string 
 *     string $.md5 ( string str )
 *   </code>
 * 
 * calculates the md5 hash of str using the » rsa data security, inc. md5 message-digest algorithm, and returns that hash. 
 * md5 (message-digest algorithm 5) is a widely-used cryptographic hash function with a 128-bit hash value. md5 has been employed in a wide variety of security applications, and is also commonly used to check the integrity of data. the generated hash is also non-reversable. data cannot be retrieved from the message digest, the digest uniquely identifies the data.
 * md5 was developed by professor ronald l. rivest in 1994. its 128 bit (16 byte) message digest makes it a faster implementation than sha-1.
 * this script is used to process a variable length message into a fixed-length output of 128 bits using the md5 algorithm. it is fully compatible with utf-8 encoding. it is very useful when u want to transfer encrypted passwords over the internet. if you plan using utf-8 encoding in your project don't forget to set the page encoding to utf-8 (content-type meta tag). 
 * this function orginally get from the webtoolkit and rewrite for using as the jquery plugin.
 * 
 * example
 *   code
 *     <code>
 *       $.md5("i'm persian."); 
 *     </code>
 *   result
 *     <code>
 *       "b8c901d0f02223f9761016cfff9d68df"
 *     </code>
 * 
 * @alias muhammad hussein fattahizadeh < muhammad [at] semnanweb [dot] com >
 * @link http://www.semnanweb.com/jquery-plugin/md5.html
 * @see http://www.webtoolkit.info/
 * @license http://www.gnu.org/licenses/gpl.html [gnu general public license]
 * @param {jquery} {md5:function(string))
 * @return string
 */
(function($){
  var rotateleft = function(lvalue, ishiftbits) {
    return (lvalue << ishiftbits) | (lvalue >>> (32 - ishiftbits));
  }
  var addunsigned = function(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);
    }
  }
  var f = function(x, y, z) {
    return (x & y) | ((~ x) & z);
  }
  var g = function(x, y, z) {
    return (x & z) | (y & (~ z));
  }
  var h = function(x, y, z) {
    return (x ^ y ^ z);
  }
  var i = function(x, y, z) {
    return (y ^ (x | (~ z)));
  }
  var ff = function(a, b, c, d, x, s, ac) {
    a = addunsigned(a, addunsigned(addunsigned(f(b, c, d), x), ac));
    return addunsigned(rotateleft(a, s), b);
  };
  var gg = function(a, b, c, d, x, s, ac) {
    a = addunsigned(a, addunsigned(addunsigned(g(b, c, d), x), ac));
    return addunsigned(rotateleft(a, s), b);
  };
  var hh = function(a, b, c, d, x, s, ac) {
    a = addunsigned(a, addunsigned(addunsigned(h(b, c, d), x), ac));
    return addunsigned(rotateleft(a, s), b);
  };
  var ii = function(a, b, c, d, x, s, ac) {
    a = addunsigned(a, addunsigned(addunsigned(i(b, c, d), x), ac));
    return addunsigned(rotateleft(a, s), b);
  };
  var converttowordarray = function(string) {
    var lwordcount;
    var lmessagelength = string.length;
    var lnumberofwordstempone = lmessagelength + 8;
    var lnumberofwordstemptwo = (lnumberofwordstempone - (lnumberofwordstempone % 64)) / 64;
    var lnumberofwords = (lnumberofwordstemptwo + 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;
  };
  var wordtohex = function(lvalue) {
    var wordtohexvalue = "", wordtohexvaluetemp = "", lbyte, lcount;
    for (lcount = 0; lcount <= 3; lcount++) {
      lbyte = (lvalue >>> (lcount * 8)) & 255;
      wordtohexvaluetemp = "0" + lbyte.tostring(16);
      wordtohexvalue = wordtohexvalue + wordtohexvaluetemp.substr(wordtohexvaluetemp.length - 2, 2);
    }
    return wordtohexvalue;
  };
  var utf8encode = function(string) {
    string = string.replace(/\x0d\x0a/g, "\x0a");
    var output = "";
    for (var n = 0; n < string.length; n++) {
      var c = string.charcodeat(n);
      if (c < 128) {
        output += string.fromcharcode(c);
      } else if ((c > 127) && (c < 2048)) {
        output += string.fromcharcode((c >> 6) | 192);
        output += string.fromcharcode((c & 63) | 128);
      } else {
        output += string.fromcharcode((c >> 12) | 224);
        output += string.fromcharcode(((c >> 6) & 63) | 128);
        output += string.fromcharcode((c & 63) | 128);
      }
    }
    return output;
  };
  $.extend({
    md5: function(string) {
      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 tempvalue = wordtohex(a) + wordtohex(b) + wordtohex(c) + wordtohex(d);
      return tempvalue.tolowercase();
    }
  });
})(jquery);

或者点击此处本站下载jquer.md5.js源码。

简单测试示例：

<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>www.jb51.net jquery md5加密</title>
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script type="text/javascript" src="jquery.md5.js"></script>
<script type="text/javascript">
alert($.md5("www.jb51.net"));
</script>
</head>
<body>
</body>
</html>

带入jquery.md5.js到上述示例中，使用在线html/css/javascript代码运行工具：http://tools.jb51.net/code/htmljsrun，运行代码可得到如下结果：

jQuery md5加密插件jQuery.md5.js用法示例