jQuery md5加密插件jQuery.md5.js用法示例

$.(md5("你想要加密的字符串"));

/
  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 monly 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 patible with UTF-8 encoding. It is very useful when u want to transfer encrypted passwords over the inter. If you plan using UTF-8 encoding in your project don't fet to set the page encoding to UTF-8 (Content-Type meta tag). 
  This function inally 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]  >
  @link http://.semnanweb./jquery-plugin/md5.html
  @see http://.webtoolkit.info/
  @license http://.gnu./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);

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<html xmlns="http://.w3./1999/xhtml">
<head>
<title>.jb51. jQuery md5加密</title>
<script src="http://libs.baidu./jquery/2.0.0/jquery.min.js"></script>
<script type="text/javascript" src="jquery.md5.js"></script>
<script type="text/javascript">
alert($.md5(".jb51."));
</script>
</head>
<body>
</body>
</html>