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：
* Calculate the md5 hash of a String
* String $.md5 ( String str )
*
*
* 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
*
* $.md5("I'm Persian.");
*
* Result
*
* "b8c901d0f02223f9761016cfff9d68df"
*
*
* @alias Muhammad Hussein Fattahizadeh < muhammad [AT] semnanweb [DOT] com >
* @link http://www.semnanweb.com/jquery-plugin/md5.html
* @see http://www.webtoolkit.info/
* @license http://www.gnu.org/licenses/gpl.html [GNU General Public License]
* @param {jQuery} {md5:function(string))
* @return string
*/
(function($){
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,z) {
return (x & z) | (y & (~ z));
}
var H = function(x,z) {
return (x ^ y ^ z);
}
var I = function(x,z) {
return (y ^ (x | (~ z)));
}
var FF = function(a,b,c,d,x,s,ac) {
a = addUnsigned(a,addUnsigned(addUnsigned(F(b,d),x),ac));
return addUnsigned(rotateLeft(a,s),b);
};
var GG = function(a,addUnsigned(addUnsigned(G(b,b);
};
var HH = function(a,addUnsigned(addUnsigned(H(b,b);
};
var II = function(a,addUnsigned(addUnsigned(I(b,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,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,x[k+0],S11,0xD76AA478);
d = FF(d,x[k+1],S12,0xE8C7B756);
c = FF(c,x[k+2],S13,0x242070DB);
b = FF(b,x[k+3],S14,0xC1BDCEEE);
a = FF(a,x[k+4],0xF57C0FAF);
d = FF(d,x[k+5],0x4787C62A);
c = FF(c,x[k+6],0xA8304613);
b = FF(b,x[k+7],0xFD469501);
a = FF(a,x[k+8],0x698098D8);
d = FF(d,x[k+9],0x8B44F7AF);
c = FF(c,x[k+10],0xFFFF5BB1);
b = FF(b,x[k+11],0x895CD7BE);
a = FF(a,x[k+12],0x6B901122);
d = FF(d,x[k+13],0xFD987193);
c = FF(c,x[k+14],0xA679438E);
b = FF(b,x[k+15],0x49B40821);
a = GG(a,S21,0xF61E2562);
d = GG(d,S22,0xC040B340);
c = GG(c,S23,0x265E5A51);
b = GG(b,S24,0xE9B6C7AA);
a = GG(a,0xD62F105D);
d = GG(d,0x2441453);
c = GG(c,0xD8A1E681);
b = GG(b,0xE7D3FBC8);
a = GG(a,0x21E1CDE6);
d = GG(d,0xC33707D6);
c = GG(c,0xF4D50D87);
b = GG(b,0x455A14ED);
a = GG(a,0xA9E3E905);
d = GG(d,0xFCEFA3F8);
c = GG(c,0x676F02D9);
b = GG(b,0x8D2A4C8A);
a = HH(a,S31,0xFFFA3942);
d = HH(d,S32,0x8771F681);
c = HH(c,S33,0x6D9D6122);
b = HH(b,S34,0xFDE5380C);
a = HH(a,0xA4BEEA44);
d = HH(d,0x4BDECFA9);
c = HH(c,0xF6BB4B60);
b = HH(b,0xBEBFBC70);
a = HH(a,0x289B7EC6);
d = HH(d,0xEAA127FA);
c = HH(c,0xD4EF3085);
b = HH(b,0x4881D05);
a = HH(a,0xD9D4D039);
d = HH(d,0xE6DB99E5);
c = HH(c,0x1FA27CF8);
b = HH(b,0xC4AC5665);
a = II(a,S41,0xF4292244);
d = II(d,S42,0x432AFF97);
c = II(c,S43,0xAB9423A7);
b = II(b,S44,0xFC93A039);
a = II(a,0x655B59C3);
d = II(d,0x8F0CCC92);
c = II(c,0xFFEFF47D);
b = II(b,0x85845DD1);
a = II(a,0x6FA87E4F);
d = II(d,0xFE2CE6E0);
c = II(c,0xA3014314);
b = II(b,0x4E0811A1);
a = II(a,0xF7537E82);
d = II(d,0xBD3AF235);
c = II(c,0x2AD7D2BB);
b = II(b,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：
