/*
* jQuery Cryptography Plug-in
* version: 1.0.0 (24 Sep 2008)
* http://www.opensource.org/licenses/mit-license.php
*/
(function($){
$.fn.crypt = function(options) {
var defaults = {
b64Str : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
strKey : "123",
method : "md5",
source : "",
chrsz : 8, /* md5 - bits per input character. 8 - ASCII; 16 - Unicode */
hexcase : 0 /* md5 - hex output format. 0 - lowercase; 1 - uppercase */
};
// code to enable URL and Filename Safe Alphabet (RFC4648 Sec5)
if (typeof(options.urlsafe) == 'undefined'){
defaults.b64Str += '+/=';
options.urlsafe = false;
}else if (options.urlsafe){
defaults.b64Str += '-_=';
}else{
defaults.b64Str += '+/=';
}
var opts = $.extend(defaults, options);
// support for $("#name").crypt.....
if (!opts.source) {
var $this = $(this);
// determine if it's a div or a textarea
if ($this.html()) opts.source = $this.html();
else if ($this.val()) opts.source = $this.val();
//else {alert("Please provide source text");return false;};
else {return false;};
};
if (opts.method == 'md5') {
return md5(opts);
} else if (opts.method == 'sha1') {
return sha1(opts);
} else if (opts.method == 'b64enc') {
return b64enc(opts);
} else if (opts.method == 'b64dec') {
return b64dec(opts);
} else if (opts.method == 'xteaenc') {
return xteaenc(opts);
} else if (opts.method == 'xteadec') {
return xteadec(opts);
} else if (opts.method == 'xteab64enc') {
var tmpenc = xteaenc(opts);
opts.method = "b64enc";
opts.source = tmpenc;
return b64enc(opts);
} else if (opts.method == 'xteab64dec') {
var tmpdec = b64dec(opts);
opts.method = "xteadec";
opts.source = tmpdec;
return xteadec(opts);
}
function b64enc(params) {
var output = "";
var chr1, chr2, chr3;
var enc1, enc2, enc3, enc4;
var i = 0;
do {
chr1 = params.source.charCodeAt(i++);
chr2 = params.source.charCodeAt(i++);
chr3 = params.source.charCodeAt(i++);
enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;
if (isNaN(chr2)) {
enc3 = enc4 = 64;
} else if (isNaN(chr3)) {
enc4 = 64;
};
output += params.b64Str.charAt(enc1)
+ params.b64Str.charAt(enc2)
+ params.b64Str.charAt(enc3)
+ params.b64Str.charAt(enc4);
} while (i < params.source.length);
return output;
};
function b64dec(params) {
var output = "";
var chr1, chr2, chr3;
var enc1, enc2, enc3, enc4;
var i = 0;
// remove all characters that are not A-Z, a-z, 0-9, !, -, or _
// remove all characters that are not A-Z, a-z, 0-9, !, -, or _
// params.source = params.source.replace(/[^A-Za-z0-9!_-]/g, "");
var re = new RegExp ('[^A-Za-z0-9' + params.b64Str.substr(-3) + ']', 'g');
params.source = params.source.replace(re, "");
do {
enc1 = params.b64Str.indexOf(params.source.charAt(i++));
enc2 = params.b64Str.indexOf(params.source.charAt(i++));
enc3 = params.b64Str.indexOf(params.source.charAt(i++));
enc4 = params.b64Str.indexOf(params.source.charAt(i++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
output = output + String.fromCharCode(chr1);
if (enc3 != 64) {
output = output + String.fromCharCode(chr2);
}
if (enc4 != 64) {
output = output + String.fromCharCode(chr3);
}
} while (i < params.source.length);
return output;
};
function md5(params) {
/* This is a trimmed version of Paul Johnsons JavaScript
*
* A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
* Digest Algorithm, as defined in RFC 1321.
* Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
* Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
* Distributed under the BSD License
* See http://pajhome.org.uk/crypt/md5 for more info.
*/
//var chrsz = 8; /* bits per input character. 8 - ASCII; 16 - Unicode */
//var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */
return binl2hex(core_md5(str2binl(params.source), params.source.length * params.chrsz));
/*
* Convert an array of little-endian words to a hex string.
*/
function binl2hex(binarray)
{
var hex_tab = params.hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
var str = "";
for(var i = 0; i < binarray.length * 4; i++)
{
str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
hex_tab.charAt((binarray[i>>2] >> ((i%4)*8 )) & 0xF);
};
return str;
};
/*
* Calculate the HMAC-MD5, of a key and some data
*/
function core_hmac_md5(key, data)
{
var bkey = str2binl(key);
if(bkey.length > 16) bkey = core_md5(bkey, key.length * params.chrsz);
var ipad = Array(16), opad = Array(16);
for(var i = 0; i < 16; i++)
{
ipad[i] = bkey[i] ^ 0x36363636;
opad[i] = bkey[i] ^ 0x5C5C5C5C;
};
var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * params.chrsz);
return core_md5(opad.concat(hash), 512 + 128);
};
/*
* Convert a string to an array of little-endian words
* If chrsz is ASCII, characters >255 have their hi-byte silently ignored.
*/
function str2binl(str)
{
var bin = Array();
var mask = (1 << params.chrsz) - 1;
for(var i = 0; i < str.length * params.chrsz; i += params.chrsz)
bin[i>>5] |= (str.charCodeAt(i / params.chrsz) & mask) << (i%32);
return bin;
}
/*
* Bitwise rotate a 32-bit number to the left.
*/
function bit_rol(num, cnt)
{
return (num << cnt) | (num >>> (32 - cnt));
}
/*
* These functions implement the four basic operations the algorithm uses.
*/
function md5_cmn(q, a, b, x, s, t)
{
return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
}
function md5_ff(a, b, c, d, x, s, t)
{
return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md5_gg(a, b, c, d, x, s, t)
{
return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md5_hh(a, b, c, d, x, s, t)
{
return md5_cmn(b ^ c ^ d, a, b, x, s, t);
}
function md5_ii(a, b, c, d, x, s, t)
{
return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}
/*
* Calculate the MD5 of an array of little-endian words, and a bit length
*/
function core_md5(x, len)
{
/* append padding */
x[len >> 5] |= 0x80 << ((len) % 32);
x[(((len + 64) >>> 9) << 4) + 14] = len;
var a = 1732584193;
var b = -271733879;
var c = -1732584194;
var d = 271733878;
for(var i = 0; i < x.length; i += 16)
{
var olda = a;
var oldb = b;
var oldc = c;
var oldd = d;
a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
c = md5_ff(c, d, a, b, x[i+ 2], 17, 606105819);
b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
d = md5_ff(d, a, b, c, x[i+ 5], 12, 1200080426);
c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
a = md5_ff(a, b, c, d, x[i+ 8], 7 , 1770035416);
d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
a = md5_ff(a, b, c, d, x[i+12], 7 , 1804603682);
d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
b = md5_ff(b, c, d, a, x[i+15], 22, 1236535329);
a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
c = md5_gg(c, d, a, b, x[i+11], 14, 643717713);
b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
d = md5_gg(d, a, b, c, x[i+10], 9 , 38016083);
c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
a = md5_gg(a, b, c, d, x[i+ 9], 5 , 568446438);
d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
b = md5_gg(b, c, d, a, x[i+ 8], 20, 1163531501);
a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
c = md5_gg(c, d, a, b, x[i+ 7], 14, 1735328473);
b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);
a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
c = md5_hh(c, d, a, b, x[i+11], 16, 1839030562);
b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
d = md5_hh(d, a, b, c, x[i+ 4], 11, 1272893353);
c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
a = md5_hh(a, b, c, d, x[i+13], 4 , 681279174);
d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
b = md5_hh(b, c, d, a, x[i+ 6], 23, 76029189);
a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
c = md5_hh(c, d, a, b, x[i+15], 16, 530742520);
b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);
a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
d = md5_ii(d, a, b, c, x[i+ 7], 10, 1126891415);
c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
a = md5_ii(a, b, c, d, x[i+12], 6 , 1700485571);
d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
a = md5_ii(a, b, c, d, x[i+ 8], 6 , 1873313359);
d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
b = md5_ii(b, c, d, a, x[i+13], 21, 1309151649);
a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
c = md5_ii(c, d, a, b, x[i+ 2], 15, 718787259);
b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);
a = safe_add(a, olda);
b = safe_add(b, oldb);
c = safe_add(c, oldc);
d = safe_add(d, oldd);
};
return Array(a, b, c, d);
};
};
/*
* Add integers, wrapping at 2^32. This uses 16-bit operations internally
* to work around bugs in some JS interpreters. (used by md5 and sha1)
*/
function safe_add(x, y)
{
var lsw = (x & 0xFFFF) + (y & 0xFFFF);
var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return (msw << 16) | (lsw & 0xFFFF);
};
function sha1(params) {
return binb2hex(core_sha1(str2binb(params.source),params.source.length * params.chrsz));
/*
* Calculate the SHA-1 of an array of big-endian words, and a bit length
*/
function core_sha1(x, len)
{
/* append padding */
x[len >> 5] |= 0x80 << (24 - len % 32);
x[((len + 64 >> 9) << 4) + 15] = len;
var w = Array(80);
var a = 1732584193;
var b = -271733879;
var c = -1732584194;
var d = 271733878;
var e = -1009589776;
for(var i = 0; i < x.length; i += 16)
{
var olda = a;
var oldb = b;
var oldc = c;
var oldd = d;
var olde = e;
for(var j = 0; j < 80; j++)
{
if(j < 16) w[j] = x[i + j];
else w[j] = rol(w[j-3] ^ w[j-8] ^ w[j-14] ^ w[j-16], 1);
var t = safe_add(safe_add(rol(a, 5), sha1_ft(j, b, c, d)),
safe_add(safe_add(e, w[j]), sha1_kt(j)));
e = d;
d = c;
c = rol(b, 30);
b = a;
a = t;
}
a = safe_add(a, olda);
b = safe_add(b, oldb);
c = safe_add(c, oldc);
d = safe_add(d, oldd);
e = safe_add(e, olde);
}
return Array(a, b, c, d, e);
}
/*
* Bitwise rotate a 32-bit number to the left.
*/
function rol(num, cnt)
{
return (num << cnt) | (num >>> (32 - cnt));
}
/*
* Determine the appropriate additive constant for the current iteration
*/
function sha1_kt(t)
{
return (t < 20) ? 1518500249 : (t < 40) ? 1859775393 :
(t < 60) ? -1894007588 : -899497514;
}
/*
* Perform the appropriate triplet combination function for the current
* iteration
*/
function sha1_ft(t, b, c, d)
{
if(t < 20) return (b & c) | ((~b) & d);
if(t < 40) return b ^ c ^ d;
if(t < 60) return (b & c) | (b & d) | (c & d);
return b ^ c ^ d;
}
/*
* Convert an array of big-endian words to a hex string.
*/
function binb2hex(binarray)
{
var hex_tab = params.hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
var str = "";
for(var i = 0; i < binarray.length * 4; i++)
{
str += hex_tab.charAt((binarray[i>>2] >> ((3 - i%4)*8+4)) & 0xF) +
hex_tab.charAt((binarray[i>>2] >> ((3 - i%4)*8 )) & 0xF);
}
return str;
}
/*
* Convert an 8-bit or 16-bit string to an array of big-endian words
* In 8-bit function, characters >255 have their hi-byte silently ignored.
*/
function str2binb(str)
{
var bin = Array();
var mask = (1 << params.chrsz) - 1;
for(var i = 0; i < str.length * params.chrsz; i += params.chrsz)
bin[i>>5] |= (str.charCodeAt(i / params.chrsz) & mask) << (32 - params.chrsz - i%32);
return bin;
}
};
function xteaenc(params) {
var v = new Array(2), k = new Array(4), s = "", i;
params.source = escape(params.source); // use escape() so only have single-byte chars to encode
// build key directly from 1st 16 chars of strKey
for (var i=0; i<4; i++) k[i] = Str4ToLong(params.strKey.slice(i*4,(i+1)*4));
for (i=0; i<params.source.length; i+=8) { // encode strSource into s in 64-bit (8 char) blocks
v[0] = Str4ToLong(params.source.slice(i,i+4)); // ... note this is 'electronic codebook' mode
v[1] = Str4ToLong(params.source.slice(i+4,i+8));
code(v, k);
s += LongToStr4(v[0]) + LongToStr4(v[1]);
}
return escCtrlCh(s);
// note: if strSource or strKey are passed as string objects, rather than strings, this
// function will throw an 'Object doesn't support this property or method' error
function code(v, k) {
// Extended TEA: this is the 1997 revised version of Needham & Wheeler's algorithm
// params: v[2] 64-bit value block; k[4] 128-bit key
var y = v[0], z = v[1];
var delta = 0x9E3779B9, limit = delta*32, sum = 0;
while (sum != limit) {
y += (z<<4 ^ z>>>5)+z ^ sum+k[sum & 3];
sum += delta;
z += (y<<4 ^ y>>>5)+y ^ sum+k[sum>>>11 & 3];
// note: unsigned right-shift '>>>' is used in place of original '>>', due to lack
// of 'unsigned' type declaration in JavaScript (thanks to Karsten Kraus for this)
}
v[0] = y;v[1] = z;
}
};
function xteadec(params) {
var v = new Array(2), k = new Array(4), s = "", i;
for (var i=0; i<4; i++) k[i] = Str4ToLong(params.strKey.slice(i*4,(i+1)*4));
ciphertext = unescCtrlCh(params.source);
for (i=0; i<ciphertext.length; i+=8) { // decode ciphertext into s in 64-bit (8 char) blocks
v[0] = Str4ToLong(ciphertext.slice(i,i+4));
v[1] = Str4ToLong(ciphertext.slice(i+4,i+8));
decode(v, k);
s += LongToStr4(v[0]) + LongToStr4(v[1]);
}
// strip trailing null chars resulting from filling 4-char blocks:
s = s.replace(/\0+$/, '');
return unescape(s);
function decode(v, k) {
var y = v[0], z = v[1];
var delta = 0x9E3779B9, sum = delta*32;
while (sum != 0) {
z -= (y<<4 ^ y>>>5)+y ^ sum+k[sum>>>11 & 3];
sum -= delta;
y -= (z<<4 ^ z>>>5)+z ^ sum+k[sum & 3];
}
v[0] = y;v[1] = z;
}
};
// xtea supporting functions
function Str4ToLong(s) { // convert 4 chars of s to a numeric long
var v = 0;
for (var i=0; i<4; i++) v |= s.charCodeAt(i) << i*8;
return isNaN(v) ? 0 : v;
};
function LongToStr4(v) { // convert a numeric long to 4 char string
var s = String.fromCharCode(v & 0xFF, v>>8 & 0xFF, v>>16 & 0xFF, v>>24 & 0xFF);
return s;
};
function escCtrlCh(str) { // escape control chars which might cause problems with encrypted texts
return str.replace(/[\0\t\n\v\f\r\xa0'"!]/g, function(c) {return '!' + c.charCodeAt(0) + '!';});
};
function unescCtrlCh(str) { // unescape potentially problematic nulls and control characters
return str.replace(/!\d\d?\d?!/g, function(c) {return String.fromCharCode(c.slice(1,-1));});
};
};
})(jQuery);