https://www.daetool.com/static/index/common/js/md5.js

1/*
2 * JavaScript MD5
3 * https://github.com/blueimp/JavaScript-MD5
4 *
5 * Copyright 2011, Sebastian Tschan
6 * https://blueimp.net
7 *
8 * Licensed under the MIT license:
9 * https://opensource.org/licenses/MIT
10 *
11 * Based on
12 * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
13 * Digest Algorithm, as defined in RFC 1321.
14 * Version 2.2 Copyright (C) Paul Johnston 1999 - 2009
15 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
16 * Distributed under the BSD License
17 * See http://pajhome.org.uk/crypt/md5 for more info.
18 */
19
20/* global define */
21
22/* eslint-disable strict */
23
24(function ($) {
25  "use strict";
26
27  /**
28   * Add integers, wrapping at 2^32.
29   * This uses 16-bit operations internally to work around bugs in interpreters.
30   *
31   * @param {number} x First integer
32   * @param {number} y Second integer
33   * @returns {number} Sum
34   */
35  function safeAdd(x, y) {
36    var lsw = (x & 0xffff) + (y & 0xffff);
37    var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
38    return (msw << 16) | (lsw & 0xffff);
39  }
40
41  /**
42   * Bitwise rotate a 32-bit number to the left.
43   *
44   * @param {number} num 32-bit number
45   * @param {number} cnt Rotation count
46   * @returns {number} Rotated number
47   */
48  function bitRotateLeft(num, cnt) {
49    return (num << cnt) | (num >>> (32 - cnt));
50  }
51
52  /**
53   * Basic operation the algorithm uses.
54   *
55   * @param {number} q q
56   * @param {number} a a
57   * @param {number} b b
58   * @param {number} x x
59   * @param {number} s s
60   * @param {number} t t
61   * @returns {number} Result
62   */
63  function md5cmn(q, a, b, x, s, t) {
64    return safeAdd(bitRotateLeft(safeAdd(safeAdd(a, q), safeAdd(x, t)), s), b);
65  }
66  /**
67   * Basic operation the algorithm uses.
68   *
69   * @param {number} a a
70   * @param {number} b b
71   * @param {number} c c
72   * @param {number} d d
73   * @param {number} x x
74   * @param {number} s s
75   * @param {number} t t
76   * @returns {number} Result
77   */
78  function md5ff(a, b, c, d, x, s, t) {
79    return md5cmn((b & c) | (~b & d), a, b, x, s, t);
80  }
81  /**
82   * Basic operation the algorithm uses.
83   *
84   * @param {number} a a
85   * @param {number} b b
86   * @param {number} c c
87   * @param {number} d d
88   * @param {number} x x
89   * @param {number} s s
90   * @param {number} t t
91   * @returns {number} Result
92   */
93  function md5gg(a, b, c, d, x, s, t) {
94    return md5cmn((b & d) | (c & ~d), a, b, x, s, t);
95  }
96  /**
97   * Basic operation the algorithm uses.
98   *
99   * @param {number} a a
100   * @param {number} b b
101   * @param {number} c c
102   * @param {number} d d
103   * @param {number} x x
104   * @param {number} s s
105   * @param {number} t t
106   * @returns {number} Result
107   */
108  function md5hh(a, b, c, d, x, s, t) {
109    return md5cmn(b ^ c ^ d, a, b, x, s, t);
110  }
111  /**
112   * Basic operation the algorithm uses.
113   *
114   * @param {number} a a
115   * @param {number} b b
116   * @param {number} c c
117   * @param {number} d d
118   * @param {number} x x
119   * @param {number} s s
120   * @param {number} t t
121   * @returns {number} Result
122   */
123  function md5ii(a, b, c, d, x, s, t) {
124    return md5cmn(c ^ (b | ~d), a, b, x, s, t);
125  }
126
127  /**
128   * Calculate the MD5 of an array of little-endian words, and a bit length.
129   *
130   * @param {Array} x Array of little-endian words
131   * @param {number} len Bit length
132   * @returns {Array<number>} MD5 Array
133   */
134  function binlMD5(x, len) {
135    /* append padding */
136    x[len >> 5] |= 0x80 << len % 32;
137    x[(((len + 64) >>> 9) << 4) + 14] = len;
138
139    var i;
140    var olda;
141    var oldb;
142    var oldc;
143    var oldd;
144    var a = 1732584193;
145    var b = -271733879;
146    var c = -1732584194;
147    var d = 271733878;
148
149    for (i = 0; i < x.length; i += 16) {
150      olda = a;
151      oldb = b;
152      oldc = c;
153      oldd = d;
154
155      a = md5ff(a, b, c, d, x[i], 7, -680876936);
156      d = md5ff(d, a, b, c, x[i + 1], 12, -389564586);
157      c = md5ff(c, d, a, b, x[i + 2], 17, 606105819);
158      b = md5ff(b, c, d, a, x[i + 3], 22, -1044525330);
159      a = md5ff(a, b, c, d, x[i + 4], 7, -176418897);
160      d = md5ff(d, a, b, c, x[i + 5], 12, 1200080426);
161      c = md5ff(c, d, a, b, x[i + 6], 17, -1473231341);
162      b = md5ff(b, c, d, a, x[i + 7], 22, -45705983);
163      a = md5ff(a, b, c, d, x[i + 8], 7, 1770035416);
164      d = md5ff(d, a, b, c, x[i + 9], 12, -1958414417);
165      c = md5ff(c, d, a, b, x[i + 10], 17, -42063);
166      b = md5ff(b, c, d, a, x[i + 11], 22, -1990404162);
167      a = md5ff(a, b, c, d, x[i + 12], 7, 1804603682);
168      d = md5ff(d, a, b, c, x[i + 13], 12, -40341101);
169      c = md5ff(c, d, a, b, x[i + 14], 17, -1502002290);
170      b = md5ff(b, c, d, a, x[i + 15], 22, 1236535329);
171
172      a = md5gg(a, b, c, d, x[i + 1], 5, -165796510);
173      d = md5gg(d, a, b, c, x[i + 6], 9, -1069501632);
174      c = md5gg(c, d, a, b, x[i + 11], 14, 643717713);
175      b = md5gg(b, c, d, a, x[i], 20, -373897302);
176      a = md5gg(a, b, c, d, x[i + 5], 5, -701558691);
177      d = md5gg(d, a, b, c, x[i + 10], 9, 38016083);
178      c = md5gg(c, d, a, b, x[i + 15], 14, -660478335);
179      b = md5gg(b, c, d, a, x[i + 4], 20, -405537848);
180      a = md5gg(a, b, c, d, x[i + 9], 5, 568446438);
181      d = md5gg(d, a, b, c, x[i + 14], 9, -1019803690);
182      c = md5gg(c, d, a, b, x[i + 3], 14, -187363961);
183      b = md5gg(b, c, d, a, x[i + 8], 20, 1163531501);
184      a = md5gg(a, b, c, d, x[i + 13], 5, -1444681467);
185      d = md5gg(d, a, b, c, x[i + 2], 9, -51403784);
186      c = md5gg(c, d, a, b, x[i + 7], 14, 1735328473);
187      b = md5gg(b, c, d, a, x[i + 12], 20, -1926607734);
188
189      a = md5hh(a, b, c, d, x[i + 5], 4, -378558);
190      d = md5hh(d, a, b, c, x[i + 8], 11, -2022574463);
191      c = md5hh(c, d, a, b, x[i + 11], 16, 1839030562);
192      b = md5hh(b, c, d, a, x[i + 14], 23, -35309556);
193      a = md5hh(a, b, c, d, x[i + 1], 4, -1530992060);
194      d = md5hh(d, a, b, c, x[i + 4], 11, 1272893353);
195      c = md5hh(c, d, a, b, x[i + 7], 16, -155497632);
196      b = md5hh(b, c, d, a, x[i + 10], 23, -1094730640);
197      a = md5hh(a, b, c, d, x[i + 13], 4, 681279174);
198      d = md5hh(d, a, b, c, x[i], 11, -358537222);
199      c = md5hh(c, d, a, b, x[i + 3], 16, -722521979);
200      b = md5hh(b, c, d, a, x[i + 6], 23, 76029189);
201      a = md5hh(a, b, c, d, x[i + 9], 4, -640364487);
202      d = md5hh(d, a, b, c, x[i + 12], 11, -421815835);
203      c = md5hh(c, d, a, b, x[i + 15], 16, 530742520);
204      b = md5hh(b, c, d, a, x[i + 2], 23, -995338651);
205
206      a = md5ii(a, b, c, d, x[i], 6, -198630844);
207      d = md5ii(d, a, b, c, x[i + 7], 10, 1126891415);
208      c = md5ii(c, d, a, b, x[i + 14], 15, -1416354905);
209      b = md5ii(b, c, d, a, x[i + 5], 21, -57434055);
210      a = md5ii(a, b, c, d, x[i + 12], 6, 1700485571);
211      d = md5ii(d, a, b, c, x[i + 3], 10, -1894986606);
212      c = md5ii(c, d, a, b, x[i + 10], 15, -1051523);
213      b = md5ii(b, c, d, a, x[i + 1], 21, -2054922799);
214      a = md5ii(a, b, c, d, x[i + 8], 6, 1873313359);
215      d = md5ii(d, a, b, c, x[i + 15], 10, -30611744);
216      c = md5ii(c, d, a, b, x[i + 6], 15, -1560198380);
217      b = md5ii(b, c, d, a, x[i + 13], 21, 1309151649);
218      a = md5ii(a, b, c, d, x[i + 4], 6, -145523070);
219      d = md5ii(d, a, b, c, x[i + 11], 10, -1120210379);
220      c = md5ii(c, d, a, b, x[i + 2], 15, 718787259);
221      b = md5ii(b, c, d, a, x[i + 9], 21, -343485551);
222
223      a = safeAdd(a, olda);
224      b = safeAdd(b, oldb);
225      c = safeAdd(c, oldc);
226      d = safeAdd(d, oldd);
227    }
228    return [a, b, c, d];
229  }
230
231  /**
232   * Convert an array of little-endian words to a string
233   *
234   * @param {Array<number>} input MD5 Array
235   * @returns {string} MD5 string
236   */
237  function binl2rstr(input) {
238    var i;
239    var output = "";
240    var length32 = input.length * 32;
241    for (i = 0; i < length32; i += 8) {
242      output += String.fromCharCode((input[i >> 5] >>> i % 32) & 0xff);
243    }
244    return output;
245  }
246
247  /**
248   * Convert a raw string to an array of little-endian words
249   * Characters >255 have their high-byte silently ignored.
250   *
251   * @param {string} input Raw input string
252   * @returns {Array<number>} Array of little-endian words
253   */
254  function rstr2binl(input) {
255    var i;
256    var output = [];
257    output[(input.length >> 2) - 1] = undefined;
258    for (i = 0; i < output.length; i += 1) {
259      output[i] = 0;
260    }
261    var length8 = input.length * 8;
262    for (i = 0; i < length8; i += 8) {
263      output[i >> 5] |= (input.charCodeAt(i / 8) & 0xff) << i % 32;
264    }
265    return output;
266  }
267
268  /**
269   * Calculate the MD5 of a raw string
270   *
271   * @param {string} s Input string
272   * @returns {string} Raw MD5 string
273   */
274  function rstrMD5(s) {
275    return binl2rstr(binlMD5(rstr2binl(s), s.length * 8));
276  }
277
278  /**
279   * Calculates the HMAC-MD5 of a key and some data (raw strings)
280   *
281   * @param {string} key HMAC key
282   * @param {string} data Raw input string
283   * @returns {string} Raw MD5 string
284   */
285  function rstrHMACMD5(key, data) {
286    var i;
287    var bkey = rstr2binl(key);
288    var ipad = [];
289    var opad = [];
290    var hash;
291    ipad[15] = opad[15] = undefined;
292    if (bkey.length > 16) {
293      bkey = binlMD5(bkey, key.length * 8);
294    }
295    for (i = 0; i < 16; i += 1) {
296      ipad[i] = bkey[i] ^ 0x36363636;
297      opad[i] = bkey[i] ^ 0x5c5c5c5c;
298    }
299    hash = binlMD5(ipad.concat(rstr2binl(data)), 512 + data.length * 8);
300    return binl2rstr(binlMD5(opad.concat(hash), 512 + 128));
301  }
302
303  /**
304   * Convert a raw string to a hex string
305   *
306   * @param {string} input Raw input string
307   * @returns {string} Hex encoded string
308   */
309  function rstr2hex(input) {
310    var hexTab = "0123456789abcdef";
311    var output = "";
312    var x;
313    var i;
314    for (i = 0; i < input.length; i += 1) {
315      x = input.charCodeAt(i);
316      output += hexTab.charAt((x >>> 4) & 0x0f) + hexTab.charAt(x & 0x0f);
317    }
318    return output;
319  }
320
321  /**
322   * Encode a string as UTF-8
323   *
324   * @param {string} input Input string
325   * @returns {string} UTF8 string
326   */
327  function str2rstrUTF8(input) {
328    return unescape(encodeURIComponent(input));
329  }
330
331  /**
332   * Encodes input string as raw MD5 string
333   *
334   * @param {string} s Input string
335   * @returns {string} Raw MD5 string
336   */
337  function rawMD5(s) {
338    return rstrMD5(str2rstrUTF8(s));
339  }
340  /**
341   * Encodes input string as Hex encoded string
342   *
343   * @param {string} s Input string
344   * @returns {string} Hex encoded string
345   */
346  function hexMD5(s) {
347    return rstr2hex(rawMD5(s));
348  }
349  /**
350   * Calculates the raw HMAC-MD5 for the given key and data
351   *
352   * @param {string} k HMAC key
353   * @param {string} d Input string
354   * @returns {string} Raw MD5 string
355   */