$.(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 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);

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