jQuery的md5加密插件及其它js md5加密代码

时间：2014-06-05 21:50:52 阅读：612 评论：0 收藏：0 [点我收藏+]
标签：c class blog code java a
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/**
 * 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);
jQuery的md5加密插件及其它js md5加密代码,布布扣,bubuko.com
jQuery的md5加密插件及其它js md5加密代码
标签：c class blog code java a
原文地址：http://www.cnblogs.com/sntetwt/p/3767740.html
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