1 /**
2 * jQuery MD5 hash algorithm function
3 *
4 * <code>
5 * Calculate the md5 hash of a String
6 * String $.md5 ( String str )
7 * </code>
8 *
9 * Calculates the MD5 hash of str using the » RSA Data Security, Inc. MD5 Message-Digest Algorithm, and returns that hash.
10 * 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.
11 * 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.
12 * 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).
13 * This function orginally get from the WebToolkit and rewrite for using as the jQuery plugin.
14 *
15 * Example
16 * Code
17 * <code>
18 * $.md5("Marydon");
19 * </code>
20 * Result
21 * <code>
22 * "988218e7eefcd86d5d855a8947f37f43"
23 * </code>
24 *
25 * @alias Muhammad Hussein Fattahizadeh < muhammad [AT] semnanweb [DOT] com >
26 * @link http://www.semnanweb.com/jquery-plugin/md5.html
27 * @see http://www.webtoolkit.info/
28 * @license http://www.gnu.org/licenses/gpl.html [GNU General Public License]
29 * @param {jQuery} {md5:function(string))
30 * @return string
31 */
32
33 (function($){
34
35 var rotateLeft = function(lValue, iShiftBits) {
36 return (lValue << iShiftBits) | (lValue >>> (32 - iShiftBits));
37 }
38
39 var addUnsigned = function(lX, lY) {
40 var lX4, lY4, lX8, lY8, lResult;
41 lX8 = (lX & 0x80000000);
42 lY8 = (lY & 0x80000000);
43 lX4 = (lX & 0x40000000);
44 lY4 = (lY & 0x40000000);
45 lResult = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF);
46 if (lX4 & lY4) return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
47 if (lX4 | lY4) {
48 if (lResult & 0x40000000) return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
49 else return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
50 } else {
51 return (lResult ^ lX8 ^ lY8);
52 }
53 }
54
55 var F = function(x, y, z) {
56 return (x & y) | ((~ x) & z);
57 }
58
59 var G = function(x, y, z) {
60 return (x & z) | (y & (~ z));
61 }
62
63 var H = function(x, y, z) {
64 return (x ^ y ^ z);
65 }
66
67 var I = function(x, y, z) {
68 return (y ^ (x | (~ z)));
69 }
70
71 var FF = function(a, b, c, d, x, s, ac) {
72 a = addUnsigned(a, addUnsigned(addUnsigned(F(b, c, d), x), ac));
73 return addUnsigned(rotateLeft(a, s), b);
74 };
75
76 var GG = function(a, b, c, d, x, s, ac) {
77 a = addUnsigned(a, addUnsigned(addUnsigned(G(b, c, d), x), ac));
78 return addUnsigned(rotateLeft(a, s), b);
79 };
80
81 var HH = function(a, b, c, d, x, s, ac) {
82 a = addUnsigned(a, addUnsigned(addUnsigned(H(b, c, d), x), ac));
83 return addUnsigned(rotateLeft(a, s), b);
84 };
85
86 var II = function(a, b, c, d, x, s, ac) {
87 a = addUnsigned(a, addUnsigned(addUnsigned(I(b, c, d), x), ac));
88 return addUnsigned(rotateLeft(a, s), b);
89 };
90
91 var convertToWordArray = function(string) {
92 var lWordCount;
93 var lMessageLength = string.length;
94 var lNumberOfWordsTempOne = lMessageLength + 8;
95 var lNumberOfWordsTempTwo = (lNumberOfWordsTempOne - (lNumberOfWordsTempOne % 64)) / 64;
96 var lNumberOfWords = (lNumberOfWordsTempTwo + 1) * 16;
97 var lWordArray = Array(lNumberOfWords - 1);
98 var lBytePosition = 0;
99 var lByteCount = 0;
100 while (lByteCount < lMessageLength) {
101 lWordCount = (lByteCount - (lByteCount % 4)) / 4;
102 lBytePosition = (lByteCount % 4) * 8;
103 lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount) << lBytePosition));
104 lByteCount++;
105 }
106 lWordCount = (lByteCount - (lByteCount % 4)) / 4;
107 lBytePosition = (lByteCount % 4) * 8;
108 lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80 << lBytePosition);
109 lWordArray[lNumberOfWords - 2] = lMessageLength << 3;
110 lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29;
111 return lWordArray;
112 };
113
114 var wordToHex = function(lValue) {
115 var WordToHexValue = "", WordToHexValueTemp = "", lByte, lCount;
116 for (lCount = 0; lCount <= 3; lCount++) {
117 lByte = (lValue >>> (lCount * 8)) & 255;
118 WordToHexValueTemp = "0" + lByte.toString(16);
119 WordToHexValue = WordToHexValue + WordToHexValueTemp.substr(WordToHexValueTemp.length - 2, 2);
120 }
121 return WordToHexValue;
122 };
123
124 var uTF8Encode = function(string) {
125 string = string.replace(/x0dx0a/g, "x0a");
126 var output = "";
127 for (var n = 0; n < string.length; n++) {
128 var c = string.charCodeAt(n);
129 if (c < 128) {
130 output += String.fromCharCode(c);
131 } else if ((c > 127) && (c < 2048)) {
132 output += String.fromCharCode((c >> 6) | 192);
133 output += String.fromCharCode((c & 63) | 128);
134 } else {
135 output += String.fromCharCode((c >> 12) | 224);
136 output += String.fromCharCode(((c >> 6) & 63) | 128);
137 output += String.fromCharCode((c & 63) | 128);
138 }
139 }
140 return output;
141 };
142
143 $.extend({
144 md5: function(string) {
145 var x = Array();
146 var k, AA, BB, CC, DD, a, b, c, d;
147 var S11=7, S12=12, S13=17, S14=22;
148 var S21=5, S22=9 , S23=14, S24=20;
149 var S31=4, S32=11, S33=16, S34=23;
150 var S41=6, S42=10, S43=15, S44=21;
151 string = uTF8Encode(string);
152 x = convertToWordArray(string);
153 a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476;
154 for (k = 0; k < x.length; k += 16) {
155 AA = a; BB = b; CC = c; DD = d;
156 a = FF(a, b, c, d, x[k+0], S11, 0xD76AA478);
157 d = FF(d, a, b, c, x[k+1], S12, 0xE8C7B756);
158 c = FF(c, d, a, b, x[k+2], S13, 0x242070DB);
159 b = FF(b, c, d, a, x[k+3], S14, 0xC1BDCEEE);
160 a = FF(a, b, c, d, x[k+4], S11, 0xF57C0FAF);
161 d = FF(d, a, b, c, x[k+5], S12, 0x4787C62A);
162 c = FF(c, d, a, b, x[k+6], S13, 0xA8304613);
163 b = FF(b, c, d, a, x[k+7], S14, 0xFD469501);
164 a = FF(a, b, c, d, x[k+8], S11, 0x698098D8);
165 d = FF(d, a, b, c, x[k+9], S12, 0x8B44F7AF);
166 c = FF(c, d, a, b, x[k+10], S13, 0xFFFF5BB1);
167 b = FF(b, c, d, a, x[k+11], S14, 0x895CD7BE);
168 a = FF(a, b, c, d, x[k+12], S11, 0x6B901122);
169 d = FF(d, a, b, c, x[k+13], S12, 0xFD987193);
170 c = FF(c, d, a, b, x[k+14], S13, 0xA679438E);
171 b = FF(b, c, d, a, x[k+15], S14, 0x49B40821);
172 a = GG(a, b, c, d, x[k+1], S21, 0xF61E2562);
173 d = GG(d, a, b, c, x[k+6], S22, 0xC040B340);
174 c = GG(c, d, a, b, x[k+11], S23, 0x265E5A51);
175 b = GG(b, c, d, a, x[k+0], S24, 0xE9B6C7AA);
176 a = GG(a, b, c, d, x[k+5], S21, 0xD62F105D);
177 d = GG(d, a, b, c, x[k+10], S22, 0x2441453);
178 c = GG(c, d, a, b, x[k+15], S23, 0xD8A1E681);
179 b = GG(b, c, d, a, x[k+4], S24, 0xE7D3FBC8);
180 a = GG(a, b, c, d, x[k+9], S21, 0x21E1CDE6);
181 d = GG(d, a, b, c, x[k+14], S22, 0xC33707D6);
182 c = GG(c, d, a, b, x[k+3], S23, 0xF4D50D87);
183 b = GG(b, c, d, a, x[k+8], S24, 0x455A14ED);
184 a = GG(a, b, c, d, x[k+13], S21, 0xA9E3E905);
185 d = GG(d, a, b, c, x[k+2], S22, 0xFCEFA3F8);
186 c = GG(c, d, a, b, x[k+7], S23, 0x676F02D9);
187 b = GG(b, c, d, a, x[k+12], S24, 0x8D2A4C8A);
188 a = HH(a, b, c, d, x[k+5], S31, 0xFFFA3942);
189 d = HH(d, a, b, c, x[k+8], S32, 0x8771F681);
190 c = HH(c, d, a, b, x[k+11], S33, 0x6D9D6122);
191 b = HH(b, c, d, a, x[k+14], S34, 0xFDE5380C);
192 a = HH(a, b, c, d, x[k+1], S31, 0xA4BEEA44);
193 d = HH(d, a, b, c, x[k+4], S32, 0x4BDECFA9);
194 c = HH(c, d, a, b, x[k+7], S33, 0xF6BB4B60);
195 b = HH(b, c, d, a, x[k+10], S34, 0xBEBFBC70);
196 a = HH(a, b, c, d, x[k+13], S31, 0x289B7EC6);
197 d = HH(d, a, b, c, x[k+0], S32, 0xEAA127FA);
198 c = HH(c, d, a, b, x[k+3], S33, 0xD4EF3085);
199 b = HH(b, c, d, a, x[k+6], S34, 0x4881D05);
200 a = HH(a, b, c, d, x[k+9], S31, 0xD9D4D039);
201 d = HH(d, a, b, c, x[k+12], S32, 0xE6DB99E5);
202 c = HH(c, d, a, b, x[k+15], S33, 0x1FA27CF8);
203 b = HH(b, c, d, a, x[k+2], S34, 0xC4AC5665);
204 a = II(a, b, c, d, x[k+0], S41, 0xF4292244);
205 d = II(d, a, b, c, x[k+7], S42, 0x432AFF97);
206 c = II(c, d, a, b, x[k+14], S43, 0xAB9423A7);
207 b = II(b, c, d, a, x[k+5], S44, 0xFC93A039);
208 a = II(a, b, c, d, x[k+12], S41, 0x655B59C3);
209 d = II(d, a, b, c, x[k+3], S42, 0x8F0CCC92);
210 c = II(c, d, a, b, x[k+10], S43, 0xFFEFF47D);
211 b = II(b, c, d, a, x[k+1], S44, 0x85845DD1);
212 a = II(a, b, c, d, x[k+8], S41, 0x6FA87E4F);
213 d = II(d, a, b, c, x[k+15], S42, 0xFE2CE6E0);
214 c = II(c, d, a, b, x[k+6], S43, 0xA3014314);
215 b = II(b, c, d, a, x[k+13], S44, 0x4E0811A1);
216 a = II(a, b, c, d, x[k+4], S41, 0xF7537E82);
217 d = II(d, a, b, c, x[k+11], S42, 0xBD3AF235);
218 c = II(c, d, a, b, x[k+2], S43, 0x2AD7D2BB);
219 b = II(b, c, d, a, x[k+9], S44, 0xEB86D391);
220 a = addUnsigned(a, AA);
221 b = addUnsigned(b, BB);
222 c = addUnsigned(c, CC);
223 d = addUnsigned(d, DD);
224 }
225 var tempValue = wordToHex(a) + wordToHex(b) + wordToHex(c) + wordToHex(d);
226 return tempValue.toLowerCase();
227 }
228 });
229 })(jQuery);