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/* * 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);