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本文實例講述了jQuery md5加密插件jQuery.md5.js用法。分享給大家供大家參考，具體如下：
使用方法：
$.(md5("你想要加密的字符串"));
jquery.md5.js插件代碼：
/**
* 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);
或者點擊此處本站下載jquer.md5.js源碼。
簡單測試示例：
<!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>
帶入jquery.md5.js到上述示例中，使用在線HTML/CSS/JavaScript代碼運行工具：http://tools.jb51.net/code/HtmlJsRun，運行代碼可得到如下結果：
PS：關于加密解密感興趣的朋友還可以參考本站在線工具：
MD5在線加密工具:
http://tools.jb51.net/password/CreateMD5Password
在線散列/哈希算法加密工具:
http://tools.jb51.net/password/hash_encrypt
在線MD5/hash/SHA-1/SHA-2/SHA-256/SHA-512/SHA-3/RIPEMD-160加密工具：
http://tools.jb51.net/password/hash_md5_sha
在線sha1/sha224/sha256/sha384/sha512加密工具：
http://tools.jb51.net/password/sha_encode
更多關于jQuery相關內容感興趣的讀者可查看本站專題：《jQuery常用插件及用法總結》、《jQuery擴展技巧總結》、《jQuery切換特效與技巧總結》、《jQuery遍歷算法與技巧總結》、《jQuery常見經典特效匯總》、《jQuery動畫與特效用法總結》及《jquery選擇器用法總結》
希望本文所述對大家jQuery程序設計有所幫助。
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