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1;(function (root, factory, undef) {
2 if (typeof exports === "object") {
3 // CommonJS
4 module.exports = exports = factory(require("./core"), require("./enc-base64"), require("./md5"), require("./evpkdf"), require("./cipher-core"));
5 }
6 else if (typeof define === "function" && define.amd) {
7 // AMD
8 define(["./core", "./enc-base64", "./md5", "./evpkdf", "./cipher-core"], factory);
9 }
10 else {
11 // Global (browser)
12 factory(root.CryptoJS);
13 }
14}(this, function (CryptoJS) {
15
16 (function () {
17 // Shortcuts
18 var C = CryptoJS;
19 var C_lib = C.lib;
20 var WordArray = C_lib.WordArray;
21 var BlockCipher = C_lib.BlockCipher;
22 var C_algo = C.algo;
23
24 // Permuted Choice 1 constants
25 var PC1 = [
26 57, 49, 41, 33, 25, 17, 9, 1,
27 58, 50, 42, 34, 26, 18, 10, 2,
28 59, 51, 43, 35, 27, 19, 11, 3,
29 60, 52, 44, 36, 63, 55, 47, 39,
30 31, 23, 15, 7, 62, 54, 46, 38,
31 30, 22, 14, 6, 61, 53, 45, 37,
32 29, 21, 13, 5, 28, 20, 12, 4
33 ];
34
35 // Permuted Choice 2 constants
36 var PC2 = [
37 14, 17, 11, 24, 1, 5,
38 3, 28, 15, 6, 21, 10,
39 23, 19, 12, 4, 26, 8,
40 16, 7, 27, 20, 13, 2,
41 41, 52, 31, 37, 47, 55,
42 30, 40, 51, 45, 33, 48,
43 44, 49, 39, 56, 34, 53,
44 46, 42, 50, 36, 29, 32
45 ];
46
47 // Cumulative bit shift constants
48 var BIT_SHIFTS = [1, 2, 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23, 25, 27, 28];
49
50 // SBOXes and round permutation constants
51 var SBOX_P = [
52 {
53 0x0: 0x808200,
54 0x10000000: 0x8000,
55 0x20000000: 0x808002,
56 0x30000000: 0x2,
57 0x40000000: 0x200,
58 0x50000000: 0x808202,
59 0x60000000: 0x800202,
60 0x70000000: 0x800000,
61 0x80000000: 0x202,
62 0x90000000: 0x800200,
63 0xa0000000: 0x8200,
64 0xb0000000: 0x808000,
65 0xc0000000: 0x8002,
66 0xd0000000: 0x800002,
67 0xe0000000: 0x0,
68 0xf0000000: 0x8202,
69 0x8000000: 0x0,
70 0x18000000: 0x808202,
71 0x28000000: 0x8202,
72 0x38000000: 0x8000,
73 0x48000000: 0x808200,
74 0x58000000: 0x200,
75 0x68000000: 0x808002,
76 0x78000000: 0x2,
77 0x88000000: 0x800200,
78 0x98000000: 0x8200,
79 0xa8000000: 0x808000,
80 0xb8000000: 0x800202,
81 0xc8000000: 0x800002,
82 0xd8000000: 0x8002,
83 0xe8000000: 0x202,
84 0xf8000000: 0x800000,
85 0x1: 0x8000,
86 0x10000001: 0x2,
87 0x20000001: 0x808200,
88 0x30000001: 0x800000,
89 0x40000001: 0x808002,
90 0x50000001: 0x8200,
91 0x60000001: 0x200,
92 0x70000001: 0x800202,
93 0x80000001: 0x808202,
94 0x90000001: 0x808000,
95 0xa0000001: 0x800002,
96 0xb0000001: 0x8202,
97 0xc0000001: 0x202,
98 0xd0000001: 0x800200,
99 0xe0000001: 0x8002,
100 0xf0000001: 0x0,
101 0x8000001: 0x808202,
102 0x18000001: 0x808000,
103 0x28000001: 0x800000,
104 0x38000001: 0x200,
105 0x48000001: 0x8000,
106 0x58000001: 0x800002,
107 0x68000001: 0x2,
108 0x78000001: 0x8202,
109 0x88000001: 0x8002,
110 0x98000001: 0x800202,
111 0xa8000001: 0x202,
112 0xb8000001: 0x808200,
113 0xc8000001: 0x800200,
114 0xd8000001: 0x0,
115 0xe8000001: 0x8200,
116 0xf8000001: 0x808002
117 },
118 {
119 0x0: 0x40084010,
120 0x1000000: 0x4000,
121 0x2000000: 0x80000,
122 0x3000000: 0x40080010,
123 0x4000000: 0x40000010,
124 0x5000000: 0x40084000,
125 0x6000000: 0x40004000,
126 0x7000000: 0x10,
127 0x8000000: 0x84000,
128 0x9000000: 0x40004010,
129 0xa000000: 0x40000000,
130 0xb000000: 0x84010,
131 0xc000000: 0x80010,
132 0xd000000: 0x0,
133 0xe000000: 0x4010,
134 0xf000000: 0x40080000,
135 0x800000: 0x40004000,
136 0x1800000: 0x84010,
137 0x2800000: 0x10,
138 0x3800000: 0x40004010,
139 0x4800000: 0x40084010,
140 0x5800000: 0x40000000,
141 0x6800000: 0x80000,
142 0x7800000: 0x40080010,
143 0x8800000: 0x80010,
144 0x9800000: 0x0,
145 0xa800000: 0x4000,
146 0xb800000: 0x40080000,
147 0xc800000: 0x40000010,
148 0xd800000: 0x84000,
149 0xe800000: 0x40084000,
150 0xf800000: 0x4010,
151 0x10000000: 0x0,
152 0x11000000: 0x40080010,
153 0x12000000: 0x40004010,
154 0x13000000: 0x40084000,
155 0x14000000: 0x40080000,
156 0x15000000: 0x10,
157 0x16000000: 0x84010,
158 0x17000000: 0x4000,
159 0x18000000: 0x4010,
160 0x19000000: 0x80000,
161 0x1a000000: 0x80010,
162 0x1b000000: 0x40000010,
163 0x1c000000: 0x84000,
164 0x1d000000: 0x40004000,
165 0x1e000000: 0x40000000,
166 0x1f000000: 0x40084010,
167 0x10800000: 0x84010,
168 0x11800000: 0x80000,
169 0x12800000: 0x40080000,
170 0x13800000: 0x4000,
171 0x14800000: 0x40004000,
172 0x15800000: 0x40084010,
173 0x16800000: 0x10,
174 0x17800000: 0x40000000,
175 0x18800000: 0x40084000,
176 0x19800000: 0x40000010,
177 0x1a800000: 0x40004010,
178 0x1b800000: 0x80010,
179 0x1c800000: 0x0,
180 0x1d800000: 0x4010,
181 0x1e800000: 0x40080010,
182 0x1f800000: 0x84000
183 },
184 {
185 0x0: 0x104,
186 0x100000: 0x0,
187 0x200000: 0x4000100,
188 0x300000: 0x10104,
189 0x400000: 0x10004,
190 0x500000: 0x4000004,
191 0x600000: 0x4010104,
192 0x700000: 0x4010000,
193 0x800000: 0x4000000,
194 0x900000: 0x4010100,
195 0xa00000: 0x10100,
196 0xb00000: 0x4010004,
197 0xc00000: 0x4000104,
198 0xd00000: 0x10000,
199 0xe00000: 0x4,
200 0xf00000: 0x100,
201 0x80000: 0x4010100,
202 0x180000: 0x4010004,
203 0x280000: 0x0,
204 0x380000: 0x4000100,
205 0x480000: 0x4000004,
206 0x580000: 0x10000,
207 0x680000: 0x10004,
208 0x780000: 0x104,
209 0x880000: 0x4,
210 0x980000: 0x100,
211 0xa80000: 0x4010000,
212 0xb80000: 0x10104,
213 0xc80000: 0x10100,
214 0xd80000: 0x4000104,
215 0xe80000: 0x4010104,
216 0xf80000: 0x4000000,
217 0x1000000: 0x4010100,
218 0x1100000: 0x10004,
219 0x1200000: 0x10000,
220 0x1300000: 0x4000100,
221 0x1400000: 0x100,
222 0x1500000: 0x4010104,
223 0x1600000: 0x4000004,
224 0x1700000: 0x0,
225 0x1800000: 0x4000104,
226 0x1900000: 0x4000000,
227 0x1a00000: 0x4,
228 0x1b00000: 0x10100,
229 0x1c00000: 0x4010000,
230 0x1d00000: 0x104,
231 0x1e00000: 0x10104,
232 0x1f00000: 0x4010004,
233 0x1080000: 0x4000000,
234 0x1180000: 0x104,
235 0x1280000: 0x4010100,
236 0x1380000: 0x0,
237 0x1480000: 0x10004,
238 0x1580000: 0x4000100,
239 0x1680000: 0x100,
240 0x1780000: 0x4010004,
241 0x1880000: 0x10000,
242 0x1980000: 0x4010104,
243 0x1a80000: 0x10104,
244 0x1b80000: 0x4000004,
245 0x1c80000: 0x4000104,
246 0x1d80000: 0x4010000,
247 0x1e80000: 0x4,
248 0x1f80000: 0x10100
249 },
250 {
251 0x0: 0x80401000,
252 0x10000: 0x80001040,
253 0x20000: 0x401040,
254 0x30000: 0x80400000,
255 0x40000: 0x0,
256 0x50000: 0x401000,
257 0x60000: 0x80000040,
258 0x70000: 0x400040,
259 0x80000: 0x80000000,
260 0x90000: 0x400000,
261 0xa0000: 0x40,
262 0xb0000: 0x80001000,
263 0xc0000: 0x80400040,
264 0xd0000: 0x1040,
265 0xe0000: 0x1000,
266 0xf0000: 0x80401040,
267 0x8000: 0x80001040,
268 0x18000: 0x40,
269 0x28000: 0x80400040,
270 0x38000: 0x80001000,
271 0x48000: 0x401000,
272 0x58000: 0x80401040,
273 0x68000: 0x0,
274 0x78000: 0x80400000,
275 0x88000: 0x1000,
276 0x98000: 0x80401000,
277 0xa8000: 0x400000,
278 0xb8000: 0x1040,
279 0xc8000: 0x80000000,
280 0xd8000: 0x400040,
281 0xe8000: 0x401040,
282 0xf8000: 0x80000040,
283 0x100000: 0x400040,
284 0x110000: 0x401000,
285 0x120000: 0x80000040,
286 0x130000: 0x0,
287 0x140000: 0x1040,
288 0x150000: 0x80400040,
289 0x160000: 0x80401000,
290 0x170000: 0x80001040,
291 0x180000: 0x80401040,
292 0x190000: 0x80000000,
293 0x1a0000: 0x80400000,
294 0x1b0000: 0x401040,
295 0x1c0000: 0x80001000,
296 0x1d0000: 0x400000,
297 0x1e0000: 0x40,
298 0x1f0000: 0x1000,
299 0x108000: 0x80400000,
300 0x118000: 0x80401040,
301 0x128000: 0x0,
302 0x138000: 0x401000,
303 0x148000: 0x400040,
304 0x158000: 0x80000000,
305 0x168000: 0x80001040,
306 0x178000: 0x40,
307 0x188000: 0x80000040,
308 0x198000: 0x1000,
309 0x1a8000: 0x80001000,
310 0x1b8000: 0x80400040,
311 0x1c8000: 0x1040,
312 0x1d8000: 0x80401000,
313 0x1e8000: 0x400000,
314 0x1f8000: 0x401040
315 },
316 {
317 0x0: 0x80,
318 0x1000: 0x1040000,
319 0x2000: 0x40000,
320 0x3000: 0x20000000,
321 0x4000: 0x20040080,
322 0x5000: 0x1000080,
323 0x6000: 0x21000080,
324 0x7000: 0x40080,
325 0x8000: 0x1000000,
326 0x9000: 0x20040000,
327 0xa000: 0x20000080,
328 0xb000: 0x21040080,
329 0xc000: 0x21040000,
330 0xd000: 0x0,
331 0xe000: 0x1040080,
332 0xf000: 0x21000000,
333 0x800: 0x1040080,
334 0x1800: 0x21000080,
335 0x2800: 0x80,
336 0x3800: 0x1040000,
337 0x4800: 0x40000,
338 0x5800: 0x20040080,
339 0x6800: 0x21040000,
340 0x7800: 0x20000000,
341 0x8800: 0x20040000,
342 0x9800: 0x0,
343 0xa800: 0x21040080,
344 0xb800: 0x1000080,
345 0xc800: 0x20000080,
346 0xd800: 0x21000000,
347 0xe800: 0x1000000,
348 0xf800: 0x40080,
349 0x10000: 0x40000,
350 0x11000: 0x80,
351 0x12000: 0x20000000,
352 0x13000: 0x21000080,
353 0x14000: 0x1000080,
354 0x15000: 0x21040000,
355 0x16000: 0x20040080,
356 0x17000: 0x1000000,
357 0x18000: 0x21040080,
358 0x19000: 0x21000000,
359 0x1a000: 0x1040000,
360 0x1b000: 0x20040000,
361 0x1c000: 0x40080,
362 0x1d000: 0x20000080,
363 0x1e000: 0x0,
364 0x1f000: 0x1040080,
365 0x10800: 0x21000080,
366 0x11800: 0x1000000,
367 0x12800: 0x1040000,
368 0x13800: 0x20040080,
369 0x14800: 0x20000000,
370 0x15800: 0x1040080,
371 0x16800: 0x80,
372 0x17800: 0x21040000,
373 0x18800: 0x40080,
374 0x19800: 0x21040080,
375 0x1a800: 0x0,
376 0x1b800: 0x21000000,
377 0x1c800: 0x1000080,
378 0x1d800: 0x40000,
379 0x1e800: 0x20040000,
380 0x1f800: 0x20000080
381 },
382 {
383 0x0: 0x10000008,
384 0x100: 0x2000,
385 0x200: 0x10200000,
386 0x300: 0x10202008,
387 0x400: 0x10002000,
388 0x500: 0x200000,
389 0x600: 0x200008,
390 0x700: 0x10000000,
391 0x800: 0x0,
392 0x900: 0x10002008,
393 0xa00: 0x202000,
394 0xb00: 0x8,
395 0xc00: 0x10200008,
396 0xd00: 0x202008,
397 0xe00: 0x2008,
398 0xf00: 0x10202000,
399 0x80: 0x10200000,
400 0x180: 0x10202008,
401 0x280: 0x8,
402 0x380: 0x200000,
403 0x480: 0x202008,
404 0x580: 0x10000008,
405 0x680: 0x10002000,
406 0x780: 0x2008,
407 0x880: 0x200008,
408 0x980: 0x2000,
409 0xa80: 0x10002008,
410 0xb80: 0x10200008,
411 0xc80: 0x0,
412 0xd80: 0x10202000,
413 0xe80: 0x202000,
414 0xf80: 0x10000000,
415 0x1000: 0x10002000,
416 0x1100: 0x10200008,
417 0x1200: 0x10202008,
418 0x1300: 0x2008,
419 0x1400: 0x200000,
420 0x1500: 0x10000000,
421 0x1600: 0x10000008,
422 0x1700: 0x202000,
423 0x1800: 0x202008,
424 0x1900: 0x0,
425 0x1a00: 0x8,
426 0x1b00: 0x10200000,
427 0x1c00: 0x2000,
428 0x1d00: 0x10002008,
429 0x1e00: 0x10202000,
430 0x1f00: 0x200008,
431 0x1080: 0x8,
432 0x1180: 0x202000,
433 0x1280: 0x200000,
434 0x1380: 0x10000008,
435 0x1480: 0x10002000,
436 0x1580: 0x2008,
437 0x1680: 0x10202008,
438 0x1780: 0x10200000,
439 0x1880: 0x10202000,
440 0x1980: 0x10200008,
441 0x1a80: 0x2000,
442 0x1b80: 0x202008,
443 0x1c80: 0x200008,
444 0x1d80: 0x0,
445 0x1e80: 0x10000000,
446 0x1f80: 0x10002008
447 },
448 {
449 0x0: 0x100000,
450 0x10: 0x2000401,
451 0x20: 0x400,
452 0x30: 0x100401,
453 0x40: 0x2100401,
454 0x50: 0x0,
455 0x60: 0x1,
456 0x70: 0x2100001,
457 0x80: 0x2000400,
458 0x90: 0x100001,
459 0xa0: 0x2000001,
460 0xb0: 0x2100400,
461 0xc0: 0x2100000,
462 0xd0: 0x401,
463 0xe0: 0x100400,
464 0xf0: 0x2000000,
465 0x8: 0x2100001,
466 0x18: 0x0,
467 0x28: 0x2000401,
468 0x38: 0x2100400,
469 0x48: 0x100000,
470 0x58: 0x2000001,
471 0x68: 0x2000000,
472 0x78: 0x401,
473 0x88: 0x100401,
474 0x98: 0x2000400,
475 0xa8: 0x2100000,
476 0xb8: 0x100001,
477 0xc8: 0x400,
478 0xd8: 0x2100401,
479 0xe8: 0x1,
480 0xf8: 0x100400,
481 0x100: 0x2000000,
482 0x110: 0x100000,
483 0x120: 0x2000401,
484 0x130: 0x2100001,
485 0x140: 0x100001,
486 0x150: 0x2000400,
487 0x160: 0x2100400,
488 0x170: 0x100401,
489 0x180: 0x401,
490 0x190: 0x2100401,
491 0x1a0: 0x100400,
492 0x1b0: 0x1,
493 0x1c0: 0x0,
494 0x1d0: 0x2100000,
495 0x1e0: 0x2000001,
496 0x1f0: 0x400,
497 0x108: 0x100400,
498 0x118: 0x2000401,
499 0x128: 0x2100001,
500 0x138: 0x1,
501 0x148: 0x2000000,
502 0x158: 0x100000,
503 0x168: 0x401,
504 0x178: 0x2100400,
505 0x188: 0x2000001,
506 0x198: 0x2100000,
507 0x1a8: 0x0,
508 0x1b8: 0x2100401,
509 0x1c8: 0x100401,
510 0x1d8: 0x400,
511 0x1e8: 0x2000400,
512 0x1f8: 0x100001
513 },
514 {
515 0x0: 0x8000820,
516 0x1: 0x20000,
517 0x2: 0x8000000,
518 0x3: 0x20,
519 0x4: 0x20020,
520 0x5: 0x8020820,
521 0x6: 0x8020800,
522 0x7: 0x800,
523 0x8: 0x8020000,
524 0x9: 0x8000800,
525 0xa: 0x20800,
526 0xb: 0x8020020,
527 0xc: 0x820,
528 0xd: 0x0,
529 0xe: 0x8000020,
530 0xf: 0x20820,
531 0x80000000: 0x800,
532 0x80000001: 0x8020820,
533 0x80000002: 0x8000820,
534 0x80000003: 0x8000000,
535 0x80000004: 0x8020000,
536 0x80000005: 0x20800,
537 0x80000006: 0x20820,
538 0x80000007: 0x20,
539 0x80000008: 0x8000020,
540 0x80000009: 0x820,
541 0x8000000a: 0x20020,
542 0x8000000b: 0x8020800,
543 0x8000000c: 0x0,
544 0x8000000d: 0x8020020,
545 0x8000000e: 0x8000800,
546 0x8000000f: 0x20000,
547 0x10: 0x20820,
548 0x11: 0x8020800,
549 0x12: 0x20,
550 0x13: 0x800,
551 0x14: 0x8000800,
552 0x15: 0x8000020,
553 0x16: 0x8020020,
554 0x17: 0x20000,
555 0x18: 0x0,
556 0x19: 0x20020,
557 0x1a: 0x8020000,
558 0x1b: 0x8000820,
559 0x1c: 0x8020820,
560 0x1d: 0x20800,
561 0x1e: 0x820,
562 0x1f: 0x8000000,
563 0x80000010: 0x20000,
564 0x80000011: 0x800,
565 0x80000012: 0x8020020,
566 0x80000013: 0x20820,
567 0x80000014: 0x20,
568 0x80000015: 0x8020000,
569 0x80000016: 0x8000000,
570 0x80000017: 0x8000820,
571 0x80000018: 0x8020820,
572 0x80000019: 0x8000020,
573 0x8000001a: 0x8000800,
574 0x8000001b: 0x0,
575 0x8000001c: 0x20800,
576 0x8000001d: 0x820,
577 0x8000001e: 0x20020,
578 0x8000001f: 0x8020800
579 }
580 ];
581
582 // Masks that select the SBOX input
583 var SBOX_MASK = [
584 0xf8000001, 0x1f800000, 0x01f80000, 0x001f8000,
585 0x0001f800, 0x00001f80, 0x000001f8, 0x8000001f
586 ];
587
588 /**
589 * DES block cipher algorithm.
590 */
591 var DES = C_algo.DES = BlockCipher.extend({
592 _doReset: function () {
593 // Shortcuts
594 var key = this._key;
595 var keyWords = key.words;
596
597 // Select 56 bits according to PC1
598 var keyBits = [];
599 for (var i = 0; i < 56; i++) {
600 var keyBitPos = PC1[i] - 1;
601 keyBits[i] = (keyWords[keyBitPos >>> 5] >>> (31 - keyBitPos % 32)) & 1;
602 }
603
604 // Assemble 16 subkeys
605 var subKeys = this._subKeys = [];
606 for (var nSubKey = 0; nSubKey < 16; nSubKey++) {
607 // Create subkey
608 var subKey = subKeys[nSubKey] = [];
609
610 // Shortcut
611 var bitShift = BIT_SHIFTS[nSubKey];
612
613 // Select 48 bits according to PC2
614 for (var i = 0; i < 24; i++) {
615 // Select from the left 28 key bits
616 subKey[(i / 6) | 0] |= keyBits[((PC2[i] - 1) + bitShift) % 28] << (31 - i % 6);
617
618 // Select from the right 28 key bits
619 subKey[4 + ((i / 6) | 0)] |= keyBits[28 + (((PC2[i + 24] - 1) + bitShift) % 28)] << (31 - i % 6);
620 }
621
622 // Since each subkey is applied to an expanded 32-bit input,
623 // the subkey can be broken into 8 values scaled to 32-bits,
624 // which allows the key to be used without expansion
625 subKey[0] = (subKey[0] << 1) | (subKey[0] >>> 31);
626 for (var i = 1; i < 7; i++) {
627 subKey[i] = subKey[i] >>> ((i - 1) * 4 + 3);
628 }
629 subKey[7] = (subKey[7] << 5) | (subKey[7] >>> 27);
630 }
631
632 // Compute inverse subkeys
633 var invSubKeys = this._invSubKeys = [];
634 for (var i = 0; i < 16; i++) {
635 invSubKeys[i] = subKeys[15 - i];
636 }
637 },
638
639 encryptBlock: function (M, offset) {
640 this._doCryptBlock(M, offset, this._subKeys);
641 },
642
643 decryptBlock: function (M, offset) {
644 this._doCryptBlock(M, offset, this._invSubKeys);
645 },
646
647 _doCryptBlock: function (M, offset, subKeys) {
648 // Get input
649 this._lBlock = M[offset];
650 this._rBlock = M[offset + 1];
651
652 // Initial permutation
653 exchangeLR.call(this, 4, 0x0f0f0f0f);
654 exchangeLR.call(this, 16, 0x0000ffff);
655 exchangeRL.call(this, 2, 0x33333333);
656 exchangeRL.call(this, 8, 0x00ff00ff);
657 exchangeLR.call(this, 1, 0x55555555);
658
659 // Rounds
660 for (var round = 0; round < 16; round++) {
661 // Shortcuts
662 var subKey = subKeys[round];
663 var lBlock = this._lBlock;
664 var rBlock = this._rBlock;
665
666 // Feistel function
667 var f = 0;
668 for (var i = 0; i < 8; i++) {
669 f |= SBOX_P[i][((rBlock ^ subKey[i]) & SBOX_MASK[i]) >>> 0];
670 }
671 this._lBlock = rBlock;
672 this._rBlock = lBlock ^ f;
673 }
674
675 // Undo swap from last round
676 var t = this._lBlock;
677 this._lBlock = this._rBlock;
678 this._rBlock = t;
679
680 // Final permutation
681 exchangeLR.call(this, 1, 0x55555555);
682 exchangeRL.call(this, 8, 0x00ff00ff);
683 exchangeRL.call(this, 2, 0x33333333);
684 exchangeLR.call(this, 16, 0x0000ffff);
685 exchangeLR.call(this, 4, 0x0f0f0f0f);
686
687 // Set output
688 M[offset] = this._lBlock;
689 M[offset + 1] = this._rBlock;
690 },
691
692 keySize: 64/32,
693
694 ivSize: 64/32,
695
696 blockSize: 64/32
697 });
698
699 // Swap bits across the left and right words
700 function exchangeLR(offset, mask) {
701 var t = ((this._lBlock >>> offset) ^ this._rBlock) & mask;
702 this._rBlock ^= t;
703 this._lBlock ^= t << offset;
704 }
705
706 function exchangeRL(offset, mask) {
707 var t = ((this._rBlock >>> offset) ^ this._lBlock) & mask;
708 this._lBlock ^= t;
709 this._rBlock ^= t << offset;
710 }
711
712 /**
713 * Shortcut functions to the cipher's object interface.
714 *
715 * @example
716 *
717 * var ciphertext = CryptoJS.DES.encrypt(message, key, cfg);
718 * var plaintext = CryptoJS.DES.decrypt(ciphertext, key, cfg);
719 */
720 C.DES = BlockCipher._createHelper(DES);
721
722 /**
723 * Triple-DES block cipher algorithm.
724 */
725 var TripleDES = C_algo.TripleDES = BlockCipher.extend({
726 _doReset: function () {
727 // Shortcuts
728 var key = this._key;
729 var keyWords = key.words;
730
731 // Create DES instances
732 this._des1 = DES.createEncryptor(WordArray.create(keyWords.slice(0, 2)));
733 this._des2 = DES.createEncryptor(WordArray.create(keyWords.slice(2, 4)));
734 this._des3 = DES.createEncryptor(WordArray.create(keyWords.slice(4, 6)));
735 },
736
737 encryptBlock: function (M, offset) {
738 this._des1.encryptBlock(M, offset);
739 this._des2.decryptBlock(M, offset);
740 this._des3.encryptBlock(M, offset);
741 },
742
743 decryptBlock: function (M, offset) {
744 this._des3.decryptBlock(M, offset);
745 this._des2.encryptBlock(M, offset);
746 this._des1.decryptBlock(M, offset);
747 },
748
749 keySize: 192/32,
750
751 ivSize: 64/32,
752
753 blockSize: 64/32
754 });
755
756 /**
757 * Shortcut functions to the cipher's object interface.
758 *
759 * @example
760 *
761 * var ciphertext = CryptoJS.TripleDES.encrypt(message, key, cfg);
762 * var plaintext = CryptoJS.TripleDES.decrypt(ciphertext, key, cfg);
763 */
764 C.TripleDES = BlockCipher._createHelper(TripleDES);
765 }());
766
767
768 return CryptoJS.TripleDES;
769
770}));
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