1
2 /**
3 * jQuery MD5 hash algorithm function
4 *
5 * <code>
6 * Calculate the md5 hash of a String
7 * String $.md5 ( String str )
8 * </code>
9 *
10 * Calculates the MD5 hash of str using the » RSA Data Security, Inc. MD5 Message-Digest Algorithm, and returns that hash.
11 * 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.
12 * 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.
13 * 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).
14 * This function orginally get from the WebToolkit and rewrite for using as the jQuery plugin.
15 *
16 * Example
17 * Code
18 * <code>
19 * $.md5("I'm Persian.");
20 * </code>
21 * Result
22 * <code>
23 * "b8c901d0f02223f9761016cfff9d68df"
24 * </code>
25 *
26 * @alias Muhammad Hussein Fattahizadeh < muhammad [AT] semnanweb [DOT] com >
27 * @link http://www.semnanweb.com/jquery-plugin/md5.html
28 * @see http://www.webtoolkit.info/
29 * @license http://www.gnu.org/licenses/gpl.html [GNU General Public License]
30 * @param {jQuery} {md5:function(string))
31 * @return string
32 */
33
34 (function($){
35
36 var rotateLeft = function(lValue, iShiftBits) {
37 return (lValue << iShiftBits) | (lValue >>> (32 - iShiftBits));
38 }
39
40 var addUnsigned = function(lX, lY) {
41 var lX4, lY4, lX8, lY8, lResult;
42 lX8 = (lX & 0x80000000);
43 lY8 = (lY & 0x80000000);
44 lX4 = (lX & 0x40000000);
45 lY4 = (lY & 0x40000000);
46 lResult = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF);
47 if (lX4 & lY4) return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
48 if (lX4 | lY4) {
49 if (lResult & 0x40000000) return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
50 else return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
51 } else {
52 return (lResult ^ lX8 ^ lY8);
53 }
54 }
55
56 var F = function(x, y, z) {
57 return (x & y) | ((~ x) & z);
58 }
59
60 var G = function(x, y, z) {
61 return (x & z) | (y & (~ z));
62 }
63
64 var H = function(x, y, z) {
65 return (x ^ y ^ z);
66 }
67
68 var I = function(x, y, z) {
69 return (y ^ (x | (~ z)));
70 }
71
72 var FF = function(a, b, c, d, x, s, ac) {
73 a = addUnsigned(a, addUnsigned(addUnsigned(F(b, c, d), x), ac));
74 return addUnsigned(rotateLeft(a, s), b);
75 };
76
77 var GG = function(a, b, c, d, x, s, ac) {
78 a = addUnsigned(a, addUnsigned(addUnsigned(G(b, c, d), x), ac));
79 return addUnsigned(rotateLeft(a, s), b);
80 };
81
82 var HH = function(a, b, c, d, x, s, ac) {
83 a = addUnsigned(a, addUnsigned(addUnsigned(H(b, c, d), x), ac));
84 return addUnsigned(rotateLeft(a, s), b);
85 };
86
87 var II = function(a, b, c, d, x, s, ac) {
88 a = addUnsigned(a, addUnsigned(addUnsigned(I(b, c, d), x), ac));
89 return addUnsigned(rotateLeft(a, s), b);
90 };
91
92 var convertToWordArray = function(string) {
93 var lWordCount;
94 var lMessageLength = string.length;
95 var lNumberOfWordsTempOne = lMessageLength + 8;
96 var lNumberOfWordsTempTwo = (lNumberOfWordsTempOne - (lNumberOfWordsTempOne % 64)) / 64;
97 var lNumberOfWords = (lNumberOfWordsTempTwo + 1) * 16;
98 var lWordArray = Array(lNumberOfWords - 1);
99 var lBytePosition = 0;
100 var lByteCount = 0;
101 while (lByteCount < lMessageLength) {
102 lWordCount = (lByteCount - (lByteCount % 4)) / 4;
103 lBytePosition = (lByteCount % 4) * 8;
104 lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount) << lBytePosition));
105 lByteCount++;
106 }
107 lWordCount = (lByteCount - (lByteCount % 4)) / 4;
108 lBytePosition = (lByteCount % 4) * 8;
109 lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80 << lBytePosition);
110 lWordArray[lNumberOfWords - 2] = lMessageLength << 3;
111 lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29;
112 return lWordArray;
113 };
114
115 var wordToHex = function(lValue) {
116 var WordToHexValue = "", WordToHexValueTemp = "", lByte, lCount;
117 for (lCount = 0; lCount <= 3; lCount++) {
118 lByte = (lValue >>> (lCount * 8)) & 255;
119 WordToHexValueTemp = "0" + lByte.toString(16);
120 WordToHexValue = WordToHexValue + WordToHexValueTemp.substr(WordToHexValueTemp.length - 2, 2);
121 }
122 return WordToHexValue;
123 };
124
125 var uTF8Encode = function(string) {
126 string = string.replace(/\x0d\x0a/g, "\x0a");
127 var output = "";
128 for (var n = 0; n < string.length; n++) {
129 var c = string.charCodeAt(n);
130 if (c < 128) {
131 output += String.fromCharCode(c);
132 } else if ((c > 127) && (c < 2048)) {
133 output += String.fromCharCode((c >> 6) | 192);
134 output += String.fromCharCode((c & 63) | 128);
135 } else {
136 output += String.fromCharCode((c >> 12) | 224);
137 output += String.fromCharCode(((c >> 6) & 63) | 128);
138 output += String.fromCharCode((c & 63) | 128);
139 }
140 }
141 return output;
142 };
143
144 $.extend({
145 md5: function(string) {
146 var x = Array();
147 var k, AA, BB, CC, DD, a, b, c, d;
148 var S11=7, S12=12, S13=17, S14=22;
149 var S21=5, S22=9 , S23=14, S24=20;
150 var S31=4, S32=11, S33=16, S34=23;
151 var S41=6, S42=10, S43=15, S44=21;
152 string = uTF8Encode(string);
153 x = convertToWordArray(string);
154 a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476;
155 for (k = 0; k < x.length; k += 16) {
156 AA = a; BB = b; CC = c; DD = d;
157 a = FF(a, b, c, d, x[k+0], S11, 0xD76AA478);
158 d = FF(d, a, b, c, x[k+1], S12, 0xE8C7B756);
159 c = FF(c, d, a, b, x[k+2], S13, 0x242070DB);
160 b = FF(b, c, d, a, x[k+3], S14, 0xC1BDCEEE);
161 a = FF(a, b, c, d, x[k+4], S11, 0xF57C0FAF);
162 d = FF(d, a, b, c, x[k+5], S12, 0x4787C62A);
163 c = FF(c, d, a, b, x[k+6], S13, 0xA8304613);
164 b = FF(b, c, d, a, x[k+7], S14, 0xFD469501);
165 a = FF(a, b, c, d, x[k+8], S11, 0x698098D8);
166 d = FF(d, a, b, c, x[k+9], S12, 0x8B44F7AF);
167 c = FF(c, d, a, b, x[k+10], S13, 0xFFFF5BB1);
168 b = FF(b, c, d, a, x[k+11], S14, 0x895CD7BE);
169 a = FF(a, b, c, d, x[k+12], S11, 0x6B901122);
170 d = FF(d, a, b, c, x[k+13], S12, 0xFD987193);
171 c = FF(c, d, a, b, x[k+14], S13, 0xA679438E);
172 b = FF(b, c, d, a, x[k+15], S14, 0x49B40821);
173 a = GG(a, b, c, d, x[k+1], S21, 0xF61E2562);
174 d = GG(d, a, b, c, x[k+6], S22, 0xC040B340);
175 c = GG(c, d, a, b, x[k+11], S23, 0x265E5A51);
176 b = GG(b, c, d, a, x[k+0], S24, 0xE9B6C7AA);
177 a = GG(a, b, c, d, x[k+5], S21, 0xD62F105D);
178 d = GG(d, a, b, c, x[k+10], S22, 0x2441453);
179 c = GG(c, d, a, b, x[k+15], S23, 0xD8A1E681);
180 b = GG(b, c, d, a, x[k+4], S24, 0xE7D3FBC8);
181 a = GG(a, b, c, d, x[k+9], S21, 0x21E1CDE6);
182 d = GG(d, a, b, c, x[k+14], S22, 0xC33707D6);
183 c = GG(c, d, a, b, x[k+3], S23, 0xF4D50D87);
184 b = GG(b, c, d, a, x[k+8], S24, 0x455A14ED);
185 a = GG(a, b, c, d, x[k+13], S21, 0xA9E3E905);
186 d = GG(d, a, b, c, x[k+2], S22, 0xFCEFA3F8);
187 c = GG(c, d, a, b, x[k+7], S23, 0x676F02D9);
188 b = GG(b, c, d, a, x[k+12], S24, 0x8D2A4C8A);
189 a = HH(a, b, c, d, x[k+5], S31, 0xFFFA3942);
190 d = HH(d, a, b, c, x[k+8], S32, 0x8771F681);
191 c = HH(c, d, a, b, x[k+11], S33, 0x6D9D6122);
192 b = HH(b, c, d, a, x[k+14], S34, 0xFDE5380C);
193 a = HH(a, b, c, d, x[k+1], S31, 0xA4BEEA44);
194 d = HH(d, a, b, c, x[k+4], S32, 0x4BDECFA9);
195 c = HH(c, d, a, b, x[k+7], S33, 0xF6BB4B60);
196 b = HH(b, c, d, a, x[k+10], S34, 0xBEBFBC70);
197 a = HH(a, b, c, d, x[k+13], S31, 0x289B7EC6);
198 d = HH(d, a, b, c, x[k+0], S32, 0xEAA127FA);
199 c = HH(c, d, a, b, x[k+3], S33, 0xD4EF3085);
200 b = HH(b, c, d, a, x[k+6], S34, 0x4881D05);
201 a = HH(a, b, c, d, x[k+9], S31, 0xD9D4D039);
202 d = HH(d, a, b, c, x[k+12], S32, 0xE6DB99E5);
203 c = HH(c, d, a, b, x[k+15], S33, 0x1FA27CF8);
204 b = HH(b, c, d, a, x[k+2], S34, 0xC4AC5665);
205 a = II(a, b, c, d, x[k+0], S41, 0xF4292244);
206 d = II(d, a, b, c, x[k+7], S42, 0x432AFF97);
207 c = II(c, d, a, b, x[k+14], S43, 0xAB9423A7);
208 b = II(b, c, d, a, x[k+5], S44, 0xFC93A039);
209 a = II(a, b, c, d, x[k+12], S41, 0x655B59C3);
210 d = II(d, a, b, c, x[k+3], S42, 0x8F0CCC92);
211 c = II(c, d, a, b, x[k+10], S43, 0xFFEFF47D);
212 b = II(b, c, d, a, x[k+1], S44, 0x85845DD1);
213 a = II(a, b, c, d, x[k+8], S41, 0x6FA87E4F);
214 d = II(d, a, b, c, x[k+15], S42, 0xFE2CE6E0);
215 c = II(c, d, a, b, x[k+6], S43, 0xA3014314);
216 b = II(b, c, d, a, x[k+13], S44, 0x4E0811A1);
217 a = II(a, b, c, d, x[k+4], S41, 0xF7537E82);
218 d = II(d, a, b, c, x[k+11], S42, 0xBD3AF235);
219 c = II(c, d, a, b, x[k+2], S43, 0x2AD7D2BB);
220 b = II(b, c, d, a, x[k+9], S44, 0xEB86D391);
221 a = addUnsigned(a, AA);
222 b = addUnsigned(b, BB);
223 c = addUnsigned(c, CC);
224 d = addUnsigned(d, DD);
225 }
226 var tempValue = wordToHex(a) + wordToHex(b) + wordToHex(c) + wordToHex(d);
227 return tempValue.toLowerCase();
228 }
229 });
230 })(jQuery);
