corrade-nucleus-nucleons – Blame information for rev 20

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20 office 1 /**
2 * Definition of Data Encryption Standard (DES) taken from:
3 * http://www.itl.nist.gov/fipspubs/fip46-2.htm
4 */
5  
6 (function() {
7  
8 var C = (typeof window === 'undefined') ? require('./Crypto').Crypto : window.Crypto;
9  
10 // Shortcuts
11 var util = C.util, charenc = C.charenc, UTF8 = charenc.UTF8;
12  
13 /***************************************************************************
14 *
15 * DES Key Schedule.
16 *
17 * The Key consists of 16 sub-keys of 48 bits each. As each sub-key is
18 * applied to an expanded 32-bit value where each 4 bits of input is
19 * expanded into 6 bits of output the sub-key can be broken down into 8
20 * 32-bit values which allows the key to be used without expansion.
21 *
22 * To create the 16 sub-keys, 56 bits are selected from the input 64 bit key
23 * according to <i>PC1</i>. Each sub-key is generated by left rotating the
24 * bits a different amount and then selecting 48 bits according to <i>PC2</i>.
25 *
26 **************************************************************************/
27  
28 var KeySchedule;
29  
30 /**
31 * Representation of a DES key schedule.
32 *
33 * @param {Array
34 * of 8 bytes} key The cipher key
35 *
36 * @constructor
37 */
38 KeySchedule = function(key) {
39 /**
40 * The schedule of 16 keys
41 */
42 this.keys = new Array(16);
43 this._initialiseKeys(key);
44 };
45  
46 /**
47 * Permuted Choice 1 (PC1) byte offsets into the key. Each of the 56 entries
48 * selects one bit of DES's 56 bit key.
49 * <p>
50 *
51 * <pre>
52 * The PC1 is defined as:
53 *
54 * 57, 49, 41, 33, 25, 17, 9,
55 * 1, 58, 50, 42, 34, 26, 18,
56 * 10, 2, 59, 51, 43, 35, 27,
57 * 19, 11, 3, 60, 52, 44, 36,
58 * 63, 55, 47, 39, 31, 23, 15,
59 * 7, 62, 54, 46, 38, 30, 22,
60 * 14, 6, 61, 53, 45, 37, 29,
61 * 21, 13, 5, 28, 20, 12, 4
62 * </pre>
63 *
64 * We represent this as an offset into an 8-byte array and a bit mask upon
65 * that byte. For example 57=(7*8)+1 so is the first (MSB) of the 7th byte.
66 *
67 * @constant
68 */
69 KeySchedule.PC1_offsets = [ 7, 6, 5, 4, 3, 2, 1, 0, 7, 6, 5, 4, 3, 2, 1, 0,
70 7, 6, 5, 4, 3, 2, 1, 0, 7, 6, 5, 4, 7, 6, 5, 4, 3, 2, 1, 0, 7, 6,
71 5, 4, 3, 2, 1, 0, 7, 6, 5, 4, 3, 2, 1, 0, 3, 2, 1, 0 ];
72  
73 /**
74 * Permuted Choice 1 (PC1) bit masks. Each of the 56 entries selects one bit
75 * of DES's 56 bit key.
76 *
77 * @constant
78 */
79 KeySchedule.PC1_masks = [ 128, 128, 128, 128, 128, 128, 128, 128, 64, 64,
80 64, 64, 64, 64, 64, 64, 32, 32, 32, 32, 32, 32, 32, 32, 16, 16, 16,
81 16, 2, 2, 2, 2, 2, 2, 2, 2, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8,
82 8, 8, 8, 16, 16, 16, 16 ];
83  
84 /**
85 * Permuted Choice 2 (PC2) selects the active 48 bits from the 56 bits of
86 * the key.
87 * <p>
88 *
89 * <pre>
90 * The PC2 is defined as:
91 *
92 * 14, 17, 11, 24, 1, 5,
93 * 3, 28, 15, 6, 21, 10,
94 * 23, 19, 12, 4, 26, 8,
95 * 16, 7, 27, 20, 13, 2,
96 * 41, 52, 31, 37, 47, 55,
97 * 30, 40, 51, 45, 33, 48,
98 * 44, 49, 39, 56, 34, 53,
99 * 46, 42, 50, 36, 29, 32
100 * </pre>
101 *
102 * We invert the choice to specify what each bit adds to each 6-bit value of
103 * the key. For example, bit 1 is the 5th bit selected so this add 2 to the
104 * first 6-bit value.
105 *
106 * @constant
107 */
108 KeySchedule.PC2_offsets1 = [ 0, 3, 1, 2, 0, 1, 3, 2, 0, 1, 0, 2, 3, 0, 1,
109 3, 0, 0, 2, 3, 1, 0, 2, 0, 0, 2, 3, 1 ];
110  
111 /**
112 * PC2 offsets for 2nd block.
113 *
114 * @constant
115 */
116 KeySchedule.PC2_offsets2 = [ 7, 5, 4, 7, 5, 6, 0, 7, 4, 0, 6, 5, 4, 7, 0,
117 6, 5, 7, 4, 5, 6, 7, 5, 4, 6, 0, 4, 6 ];
118  
119 /**
120 * Permuted Choice 2 (PC2) masks for 1st block.
121 *
122 * @constant
123 */
124 KeySchedule.PC2_masks1 = [ 2, 1, 32, 4, 1, 4, 16, 1, 0, 1, 8, 8, 2, 32, 8,
125 32, 16, 0, 16, 4, 2, 0, 32, 4, 0, 2, 8, 16 ];
126  
127 /**
128 * PC2 masks for 2nd block.
129 *
130 * @constant
131 */
132 KeySchedule.PC2_masks2 = [ 2, 32, 8, 1, 2, 2, 0, 4, 4, 0, 8, 16, 32, 16, 0,
133 32, 4, 32, 2, 1, 16, 8, 8, 16, 1, 0, 1, 4 ];
134  
135 /**
136 * Cumulative key shifts.
137 *
138 * @constant
139 */
140 KeySchedule.keyShifts = [ 1, 2, 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23,
141 25, 27, 28 ];
142  
143 KeySchedule.prototype._initialiseKeys = function(key) {
144 var i;
145  
146 // extract 56 key bits in order determined by PC1
147 var bits = new Array(56);
148 for (i = 0; i < 56; i++) {
149 bits[i] = (key[KeySchedule.PC1_offsets[i]] & KeySchedule.PC1_masks[i]) != 0;
150 }
151  
152 // split 56 bits into two 28-bit chunks
153 var bits1 = bits.slice(0, 28);
154 var bits2 = bits.slice(28, 56);
155  
156 // duplicate each half to allow for easy bit shifts
157 bits1 = bits1.concat(bits1);
158 bits2 = bits2.concat(bits2);
159  
160 // assemble the 16 keys
161 for (i = 0; i < 16; i++) {
162 var k = [ 0, 0, 0, 0, 0, 0, 0, 0 ];
163  
164 // select the bits of the key according to PC2
165 var s = KeySchedule.keyShifts[i];
166 for ( var j = 0; j < 28; j++) {
167 if (bits1[j + s]) {
168 k[KeySchedule.PC2_offsets1[j]] += KeySchedule.PC2_masks1[j];
169 }
170 if (bits2[j + s]) {
171 k[KeySchedule.PC2_offsets2[j]] += KeySchedule.PC2_masks2[j];
172 }
173 }
174  
175 // Scale each of the 8 blocks to a 32-bit mask.
176 k[0] = ((k[0] & 0x1f) << 27) + ((k[0] & 0x20) >> 5);
177 for ( var j = 1; j <= 6; j++) {
178 k[j] = k[j] << (27 - 4 * j);
179 }
180 k[7] = ((k[7] & 0x3e) >> 1) + ((k[7] & 0x1) << 31);
181 this.keys[i] = k;
182 }
183 };
184  
185 /**
186 * Retrieve the key for a specified round
187 *
188 * @param i
189 * the round
190 * @returns the key
191 */
192 KeySchedule.prototype.getKey = function(i) {
193 return this.keys[i];
194 };
195  
196 /***************************************************************************
197 *
198 * DES Engine State
199 *
200 **************************************************************************/
201  
202 var State;
203  
204 /**
205 * The algorithm's state. DES operates on two sets of 32-bits, with each
206 * block of 32-bits treated as a single number.
207 *
208 * @class
209 */
210 State = function() {
211 /** The LHS of the Feistel scheme */
212 this.lhs = 0;
213 /** The RHS of the Feistel scheme */
214 this.rhs = 0;
215 };
216  
217 /**
218 * The masks that select the SBOX input. Each SBOX accepts 6 bits from the
219 * input.
220 *
221 * @constant
222 */
223 State.SBOX_MASK = [ 0xf8000001, 0x1f800000, 0x01f80000, 0x001f8000,
224 0x0001f800, 0x00001f80, 0x000001f8, 0x8000001f ];
225  
226 /**
227 * The SBOXes. The 8 SBOXes each map 6 bit masked bit of the input to 4 bits
228 * of output. These SBOXes include the post SBOX permutation and benefit
229 * from JavaScript's sparse arrays to make specifying the input match
230 * simple.
231 *
232 * @constant
233 */
234 State.SBOX = new Array(8);
235  
236 var SBOX = State.SBOX;
237  
238 SBOX[0] = new Array();
239 SBOX[0][0] = 0x808200; // 0 (0, 0) = 14
240 SBOX[0][268435456] = 0x8000; // 10000000 (0, 1) = 4
241 SBOX[0][536870912] = 0x808002; // 20000000 (0, 2) = 13
242 SBOX[0][805306368] = 0x2; // 30000000 (0, 3) = 1
243 SBOX[0][1073741824] = 0x200; // 40000000 (0, 4) = 2
244 SBOX[0][1342177280] = 0x808202; // 50000000 (0, 5) = 15
245 SBOX[0][1610612736] = 0x800202; // 60000000 (0, 6) = 11
246 SBOX[0][1879048192] = 0x800000; // 70000000 (0, 7) = 8
247 SBOX[0][-2147483648] = 0x202; // 80000000 (0, 8) = 3
248 SBOX[0][-1879048192] = 0x800200; // 90000000 (0, 9) = 10
249 SBOX[0][-1610612736] = 0x8200; // a0000000 (0, 10) = 6
250 SBOX[0][-1342177280] = 0x808000; // b0000000 (0, 11) = 12
251 SBOX[0][-1073741824] = 0x8002; // c0000000 (0, 12) = 5
252 SBOX[0][-805306368] = 0x800002; // d0000000 (0, 13) = 9
253 SBOX[0][-536870912] = 0x0; // e0000000 (0, 14) = 0
254 SBOX[0][-268435456] = 0x8202; // f0000000 (0, 15) = 7
255 SBOX[0][134217728] = 0x0; // 8000000 (1, 0) = 0
256 SBOX[0][402653184] = 0x808202; // 18000000 (1, 1) = 15
257 SBOX[0][671088640] = 0x8202; // 28000000 (1, 2) = 7
258 SBOX[0][939524096] = 0x8000; // 38000000 (1, 3) = 4
259 SBOX[0][1207959552] = 0x808200; // 48000000 (1, 4) = 14
260 SBOX[0][1476395008] = 0x200; // 58000000 (1, 5) = 2
261 SBOX[0][1744830464] = 0x808002; // 68000000 (1, 6) = 13
262 SBOX[0][2013265920] = 0x2; // 78000000 (1, 7) = 1
263 SBOX[0][-2013265920] = 0x800200; // 88000000 (1, 8) = 10
264 SBOX[0][-1744830464] = 0x8200; // 98000000 (1, 9) = 6
265 SBOX[0][-1476395008] = 0x808000; // a8000000 (1, 10) = 12
266 SBOX[0][-1207959552] = 0x800202; // b8000000 (1, 11) = 11
267 SBOX[0][-939524096] = 0x800002; // c8000000 (1, 12) = 9
268 SBOX[0][-671088640] = 0x8002; // d8000000 (1, 13) = 5
269 SBOX[0][-402653184] = 0x202; // e8000000 (1, 14) = 3
270 SBOX[0][-134217728] = 0x800000; // f8000000 (1, 15) = 8
271 SBOX[0][1] = 0x8000; // 1 (2, 0) = 4
272 SBOX[0][268435457] = 0x2; // 10000001 (2, 1) = 1
273 SBOX[0][536870913] = 0x808200; // 20000001 (2, 2) = 14
274 SBOX[0][805306369] = 0x800000; // 30000001 (2, 3) = 8
275 SBOX[0][1073741825] = 0x808002; // 40000001 (2, 4) = 13
276 SBOX[0][1342177281] = 0x8200; // 50000001 (2, 5) = 6
277 SBOX[0][1610612737] = 0x200; // 60000001 (2, 6) = 2
278 SBOX[0][1879048193] = 0x800202; // 70000001 (2, 7) = 11
279 SBOX[0][-2147483647] = 0x808202; // 80000001 (2, 8) = 15
280 SBOX[0][-1879048191] = 0x808000; // 90000001 (2, 9) = 12
281 SBOX[0][-1610612735] = 0x800002; // a0000001 (2, 10) = 9
282 SBOX[0][-1342177279] = 0x8202; // b0000001 (2, 11) = 7
283 SBOX[0][-1073741823] = 0x202; // c0000001 (2, 12) = 3
284 SBOX[0][-805306367] = 0x800200; // d0000001 (2, 13) = 10
285 SBOX[0][-536870911] = 0x8002; // e0000001 (2, 14) = 5
286 SBOX[0][-268435455] = 0x0; // f0000001 (2, 15) = 0
287 SBOX[0][134217729] = 0x808202; // 8000001 (3, 0) = 15
288 SBOX[0][402653185] = 0x808000; // 18000001 (3, 1) = 12
289 SBOX[0][671088641] = 0x800000; // 28000001 (3, 2) = 8
290 SBOX[0][939524097] = 0x200; // 38000001 (3, 3) = 2
291 SBOX[0][1207959553] = 0x8000; // 48000001 (3, 4) = 4
292 SBOX[0][1476395009] = 0x800002; // 58000001 (3, 5) = 9
293 SBOX[0][1744830465] = 0x2; // 68000001 (3, 6) = 1
294 SBOX[0][2013265921] = 0x8202; // 78000001 (3, 7) = 7
295 SBOX[0][-2013265919] = 0x8002; // 88000001 (3, 8) = 5
296 SBOX[0][-1744830463] = 0x800202; // 98000001 (3, 9) = 11
297 SBOX[0][-1476395007] = 0x202; // a8000001 (3, 10) = 3
298 SBOX[0][-1207959551] = 0x808200; // b8000001 (3, 11) = 14
299 SBOX[0][-939524095] = 0x800200; // c8000001 (3, 12) = 10
300 SBOX[0][-671088639] = 0x0; // d8000001 (3, 13) = 0
301 SBOX[0][-402653183] = 0x8200; // e8000001 (3, 14) = 6
302 SBOX[0][-134217727] = 0x808002; // f8000001 (3, 15) = 13
303  
304 SBOX[1] = new Array();
305 SBOX[1][0] = 0x40084010; // 0 (0, 0) = 15
306 SBOX[1][16777216] = 0x4000; // 1000000 (0, 1) = 1
307 SBOX[1][33554432] = 0x80000; // 2000000 (0, 2) = 8
308 SBOX[1][50331648] = 0x40080010; // 3000000 (0, 3) = 14
309 SBOX[1][67108864] = 0x40000010; // 4000000 (0, 4) = 6
310 SBOX[1][83886080] = 0x40084000; // 5000000 (0, 5) = 11
311 SBOX[1][100663296] = 0x40004000; // 6000000 (0, 6) = 3
312 SBOX[1][117440512] = 0x10; // 7000000 (0, 7) = 4
313 SBOX[1][134217728] = 0x84000; // 8000000 (0, 8) = 9
314 SBOX[1][150994944] = 0x40004010; // 9000000 (0, 9) = 7
315 SBOX[1][167772160] = 0x40000000; // a000000 (0, 10) = 2
316 SBOX[1][184549376] = 0x84010; // b000000 (0, 11) = 13
317 SBOX[1][201326592] = 0x80010; // c000000 (0, 12) = 12
318 SBOX[1][218103808] = 0x0; // d000000 (0, 13) = 0
319 SBOX[1][234881024] = 0x4010; // e000000 (0, 14) = 5
320 SBOX[1][251658240] = 0x40080000; // f000000 (0, 15) = 10
321 SBOX[1][8388608] = 0x40004000; // 800000 (1, 0) = 3
322 SBOX[1][25165824] = 0x84010; // 1800000 (1, 1) = 13
323 SBOX[1][41943040] = 0x10; // 2800000 (1, 2) = 4
324 SBOX[1][58720256] = 0x40004010; // 3800000 (1, 3) = 7
325 SBOX[1][75497472] = 0x40084010; // 4800000 (1, 4) = 15
326 SBOX[1][92274688] = 0x40000000; // 5800000 (1, 5) = 2
327 SBOX[1][109051904] = 0x80000; // 6800000 (1, 6) = 8
328 SBOX[1][125829120] = 0x40080010; // 7800000 (1, 7) = 14
329 SBOX[1][142606336] = 0x80010; // 8800000 (1, 8) = 12
330 SBOX[1][159383552] = 0x0; // 9800000 (1, 9) = 0
331 SBOX[1][176160768] = 0x4000; // a800000 (1, 10) = 1
332 SBOX[1][192937984] = 0x40080000; // b800000 (1, 11) = 10
333 SBOX[1][209715200] = 0x40000010; // c800000 (1, 12) = 6
334 SBOX[1][226492416] = 0x84000; // d800000 (1, 13) = 9
335 SBOX[1][243269632] = 0x40084000; // e800000 (1, 14) = 11
336 SBOX[1][260046848] = 0x4010; // f800000 (1, 15) = 5
337 SBOX[1][268435456] = 0x0; // 10000000 (2, 0) = 0
338 SBOX[1][285212672] = 0x40080010; // 11000000 (2, 1) = 14
339 SBOX[1][301989888] = 0x40004010; // 12000000 (2, 2) = 7
340 SBOX[1][318767104] = 0x40084000; // 13000000 (2, 3) = 11
341 SBOX[1][335544320] = 0x40080000; // 14000000 (2, 4) = 10
342 SBOX[1][352321536] = 0x10; // 15000000 (2, 5) = 4
343 SBOX[1][369098752] = 0x84010; // 16000000 (2, 6) = 13
344 SBOX[1][385875968] = 0x4000; // 17000000 (2, 7) = 1
345 SBOX[1][402653184] = 0x4010; // 18000000 (2, 8) = 5
346 SBOX[1][419430400] = 0x80000; // 19000000 (2, 9) = 8
347 SBOX[1][436207616] = 0x80010; // 1a000000 (2, 10) = 12
348 SBOX[1][452984832] = 0x40000010; // 1b000000 (2, 11) = 6
349 SBOX[1][469762048] = 0x84000; // 1c000000 (2, 12) = 9
350 SBOX[1][486539264] = 0x40004000; // 1d000000 (2, 13) = 3
351 SBOX[1][503316480] = 0x40000000; // 1e000000 (2, 14) = 2
352 SBOX[1][520093696] = 0x40084010; // 1f000000 (2, 15) = 15
353 SBOX[1][276824064] = 0x84010; // 10800000 (3, 0) = 13
354 SBOX[1][293601280] = 0x80000; // 11800000 (3, 1) = 8
355 SBOX[1][310378496] = 0x40080000; // 12800000 (3, 2) = 10
356 SBOX[1][327155712] = 0x4000; // 13800000 (3, 3) = 1
357 SBOX[1][343932928] = 0x40004000; // 14800000 (3, 4) = 3
358 SBOX[1][360710144] = 0x40084010; // 15800000 (3, 5) = 15
359 SBOX[1][377487360] = 0x10; // 16800000 (3, 6) = 4
360 SBOX[1][394264576] = 0x40000000; // 17800000 (3, 7) = 2
361 SBOX[1][411041792] = 0x40084000; // 18800000 (3, 8) = 11
362 SBOX[1][427819008] = 0x40000010; // 19800000 (3, 9) = 6
363 SBOX[1][444596224] = 0x40004010; // 1a800000 (3, 10) = 7
364 SBOX[1][461373440] = 0x80010; // 1b800000 (3, 11) = 12
365 SBOX[1][478150656] = 0x0; // 1c800000 (3, 12) = 0
366 SBOX[1][494927872] = 0x4010; // 1d800000 (3, 13) = 5
367 SBOX[1][511705088] = 0x40080010; // 1e800000 (3, 14) = 14
368 SBOX[1][528482304] = 0x84000; // 1f800000 (3, 15) = 9
369  
370 SBOX[2] = new Array();
371 SBOX[2][0] = 0x104; // 0 (0, 0) = 10
372 SBOX[2][1048576] = 0x0; // 100000 (0, 1) = 0
373 SBOX[2][2097152] = 0x4000100; // 200000 (0, 2) = 9
374 SBOX[2][3145728] = 0x10104; // 300000 (0, 3) = 14
375 SBOX[2][4194304] = 0x10004; // 400000 (0, 4) = 6
376 SBOX[2][5242880] = 0x4000004; // 500000 (0, 5) = 3
377 SBOX[2][6291456] = 0x4010104; // 600000 (0, 6) = 15
378 SBOX[2][7340032] = 0x4010000; // 700000 (0, 7) = 5
379 SBOX[2][8388608] = 0x4000000; // 800000 (0, 8) = 1
380 SBOX[2][9437184] = 0x4010100; // 900000 (0, 9) = 13
381 SBOX[2][10485760] = 0x10100; // a00000 (0, 10) = 12
382 SBOX[2][11534336] = 0x4010004; // b00000 (0, 11) = 7
383 SBOX[2][12582912] = 0x4000104; // c00000 (0, 12) = 11
384 SBOX[2][13631488] = 0x10000; // d00000 (0, 13) = 4
385 SBOX[2][14680064] = 0x4; // e00000 (0, 14) = 2
386 SBOX[2][15728640] = 0x100; // f00000 (0, 15) = 8
387 SBOX[2][524288] = 0x4010100; // 80000 (1, 0) = 13
388 SBOX[2][1572864] = 0x4010004; // 180000 (1, 1) = 7
389 SBOX[2][2621440] = 0x0; // 280000 (1, 2) = 0
390 SBOX[2][3670016] = 0x4000100; // 380000 (1, 3) = 9
391 SBOX[2][4718592] = 0x4000004; // 480000 (1, 4) = 3
392 SBOX[2][5767168] = 0x10000; // 580000 (1, 5) = 4
393 SBOX[2][6815744] = 0x10004; // 680000 (1, 6) = 6
394 SBOX[2][7864320] = 0x104; // 780000 (1, 7) = 10
395 SBOX[2][8912896] = 0x4; // 880000 (1, 8) = 2
396 SBOX[2][9961472] = 0x100; // 980000 (1, 9) = 8
397 SBOX[2][11010048] = 0x4010000; // a80000 (1, 10) = 5
398 SBOX[2][12058624] = 0x10104; // b80000 (1, 11) = 14
399 SBOX[2][13107200] = 0x10100; // c80000 (1, 12) = 12
400 SBOX[2][14155776] = 0x4000104; // d80000 (1, 13) = 11
401 SBOX[2][15204352] = 0x4010104; // e80000 (1, 14) = 15
402 SBOX[2][16252928] = 0x4000000; // f80000 (1, 15) = 1
403 SBOX[2][16777216] = 0x4010100; // 1000000 (2, 0) = 13
404 SBOX[2][17825792] = 0x10004; // 1100000 (2, 1) = 6
405 SBOX[2][18874368] = 0x10000; // 1200000 (2, 2) = 4
406 SBOX[2][19922944] = 0x4000100; // 1300000 (2, 3) = 9
407 SBOX[2][20971520] = 0x100; // 1400000 (2, 4) = 8
408 SBOX[2][22020096] = 0x4010104; // 1500000 (2, 5) = 15
409 SBOX[2][23068672] = 0x4000004; // 1600000 (2, 6) = 3
410 SBOX[2][24117248] = 0x0; // 1700000 (2, 7) = 0
411 SBOX[2][25165824] = 0x4000104; // 1800000 (2, 8) = 11
412 SBOX[2][26214400] = 0x4000000; // 1900000 (2, 9) = 1
413 SBOX[2][27262976] = 0x4; // 1a00000 (2, 10) = 2
414 SBOX[2][28311552] = 0x10100; // 1b00000 (2, 11) = 12
415 SBOX[2][29360128] = 0x4010000; // 1c00000 (2, 12) = 5
416 SBOX[2][30408704] = 0x104; // 1d00000 (2, 13) = 10
417 SBOX[2][31457280] = 0x10104; // 1e00000 (2, 14) = 14
418 SBOX[2][32505856] = 0x4010004; // 1f00000 (2, 15) = 7
419 SBOX[2][17301504] = 0x4000000; // 1080000 (3, 0) = 1
420 SBOX[2][18350080] = 0x104; // 1180000 (3, 1) = 10
421 SBOX[2][19398656] = 0x4010100; // 1280000 (3, 2) = 13
422 SBOX[2][20447232] = 0x0; // 1380000 (3, 3) = 0
423 SBOX[2][21495808] = 0x10004; // 1480000 (3, 4) = 6
424 SBOX[2][22544384] = 0x4000100; // 1580000 (3, 5) = 9
425 SBOX[2][23592960] = 0x100; // 1680000 (3, 6) = 8
426 SBOX[2][24641536] = 0x4010004; // 1780000 (3, 7) = 7
427 SBOX[2][25690112] = 0x10000; // 1880000 (3, 8) = 4
428 SBOX[2][26738688] = 0x4010104; // 1980000 (3, 9) = 15
429 SBOX[2][27787264] = 0x10104; // 1a80000 (3, 10) = 14
430 SBOX[2][28835840] = 0x4000004; // 1b80000 (3, 11) = 3
431 SBOX[2][29884416] = 0x4000104; // 1c80000 (3, 12) = 11
432 SBOX[2][30932992] = 0x4010000; // 1d80000 (3, 13) = 5
433 SBOX[2][31981568] = 0x4; // 1e80000 (3, 14) = 2
434 SBOX[2][33030144] = 0x10100; // 1f80000 (3, 15) = 12
435  
436 SBOX[3] = new Array();
437 SBOX[3][0] = 0x80401000; // 0 (0, 0) = 7
438 SBOX[3][65536] = 0x80001040; // 10000 (0, 1) = 13
439 SBOX[3][131072] = 0x401040; // 20000 (0, 2) = 14
440 SBOX[3][196608] = 0x80400000; // 30000 (0, 3) = 3
441 SBOX[3][262144] = 0x0; // 40000 (0, 4) = 0
442 SBOX[3][327680] = 0x401000; // 50000 (0, 5) = 6
443 SBOX[3][393216] = 0x80000040; // 60000 (0, 6) = 9
444 SBOX[3][458752] = 0x400040; // 70000 (0, 7) = 10
445 SBOX[3][524288] = 0x80000000; // 80000 (0, 8) = 1
446 SBOX[3][589824] = 0x400000; // 90000 (0, 9) = 2
447 SBOX[3][655360] = 0x40; // a0000 (0, 10) = 8
448 SBOX[3][720896] = 0x80001000; // b0000 (0, 11) = 5
449 SBOX[3][786432] = 0x80400040; // c0000 (0, 12) = 11
450 SBOX[3][851968] = 0x1040; // d0000 (0, 13) = 12
451 SBOX[3][917504] = 0x1000; // e0000 (0, 14) = 4
452 SBOX[3][983040] = 0x80401040; // f0000 (0, 15) = 15
453 SBOX[3][32768] = 0x80001040; // 8000 (1, 0) = 13
454 SBOX[3][98304] = 0x40; // 18000 (1, 1) = 8
455 SBOX[3][163840] = 0x80400040; // 28000 (1, 2) = 11
456 SBOX[3][229376] = 0x80001000; // 38000 (1, 3) = 5
457 SBOX[3][294912] = 0x401000; // 48000 (1, 4) = 6
458 SBOX[3][360448] = 0x80401040; // 58000 (1, 5) = 15
459 SBOX[3][425984] = 0x0; // 68000 (1, 6) = 0
460 SBOX[3][491520] = 0x80400000; // 78000 (1, 7) = 3
461 SBOX[3][557056] = 0x1000; // 88000 (1, 8) = 4
462 SBOX[3][622592] = 0x80401000; // 98000 (1, 9) = 7
463 SBOX[3][688128] = 0x400000; // a8000 (1, 10) = 2
464 SBOX[3][753664] = 0x1040; // b8000 (1, 11) = 12
465 SBOX[3][819200] = 0x80000000; // c8000 (1, 12) = 1
466 SBOX[3][884736] = 0x400040; // d8000 (1, 13) = 10
467 SBOX[3][950272] = 0x401040; // e8000 (1, 14) = 14
468 SBOX[3][1015808] = 0x80000040; // f8000 (1, 15) = 9
469 SBOX[3][1048576] = 0x400040; // 100000 (2, 0) = 10
470 SBOX[3][1114112] = 0x401000; // 110000 (2, 1) = 6
471 SBOX[3][1179648] = 0x80000040; // 120000 (2, 2) = 9
472 SBOX[3][1245184] = 0x0; // 130000 (2, 3) = 0
473 SBOX[3][1310720] = 0x1040; // 140000 (2, 4) = 12
474 SBOX[3][1376256] = 0x80400040; // 150000 (2, 5) = 11
475 SBOX[3][1441792] = 0x80401000; // 160000 (2, 6) = 7
476 SBOX[3][1507328] = 0x80001040; // 170000 (2, 7) = 13
477 SBOX[3][1572864] = 0x80401040; // 180000 (2, 8) = 15
478 SBOX[3][1638400] = 0x80000000; // 190000 (2, 9) = 1
479 SBOX[3][1703936] = 0x80400000; // 1a0000 (2, 10) = 3
480 SBOX[3][1769472] = 0x401040; // 1b0000 (2, 11) = 14
481 SBOX[3][1835008] = 0x80001000; // 1c0000 (2, 12) = 5
482 SBOX[3][1900544] = 0x400000; // 1d0000 (2, 13) = 2
483 SBOX[3][1966080] = 0x40; // 1e0000 (2, 14) = 8
484 SBOX[3][2031616] = 0x1000; // 1f0000 (2, 15) = 4
485 SBOX[3][1081344] = 0x80400000; // 108000 (3, 0) = 3
486 SBOX[3][1146880] = 0x80401040; // 118000 (3, 1) = 15
487 SBOX[3][1212416] = 0x0; // 128000 (3, 2) = 0
488 SBOX[3][1277952] = 0x401000; // 138000 (3, 3) = 6
489 SBOX[3][1343488] = 0x400040; // 148000 (3, 4) = 10
490 SBOX[3][1409024] = 0x80000000; // 158000 (3, 5) = 1
491 SBOX[3][1474560] = 0x80001040; // 168000 (3, 6) = 13
492 SBOX[3][1540096] = 0x40; // 178000 (3, 7) = 8
493 SBOX[3][1605632] = 0x80000040; // 188000 (3, 8) = 9
494 SBOX[3][1671168] = 0x1000; // 198000 (3, 9) = 4
495 SBOX[3][1736704] = 0x80001000; // 1a8000 (3, 10) = 5
496 SBOX[3][1802240] = 0x80400040; // 1b8000 (3, 11) = 11
497 SBOX[3][1867776] = 0x1040; // 1c8000 (3, 12) = 12
498 SBOX[3][1933312] = 0x80401000; // 1d8000 (3, 13) = 7
499 SBOX[3][1998848] = 0x400000; // 1e8000 (3, 14) = 2
500 SBOX[3][2064384] = 0x401040; // 1f8000 (3, 15) = 14
501  
502 SBOX[4] = new Array();
503 SBOX[4][0] = 0x80; // 0 (0, 0) = 2
504 SBOX[4][4096] = 0x1040000; // 1000 (0, 1) = 12
505 SBOX[4][8192] = 0x40000; // 2000 (0, 2) = 4
506 SBOX[4][12288] = 0x20000000; // 3000 (0, 3) = 1
507 SBOX[4][16384] = 0x20040080; // 4000 (0, 4) = 7
508 SBOX[4][20480] = 0x1000080; // 5000 (0, 5) = 10
509 SBOX[4][24576] = 0x21000080; // 6000 (0, 6) = 11
510 SBOX[4][28672] = 0x40080; // 7000 (0, 7) = 6
511 SBOX[4][32768] = 0x1000000; // 8000 (0, 8) = 8
512 SBOX[4][36864] = 0x20040000; // 9000 (0, 9) = 5
513 SBOX[4][40960] = 0x20000080; // a000 (0, 10) = 3
514 SBOX[4][45056] = 0x21040080; // b000 (0, 11) = 15
515 SBOX[4][49152] = 0x21040000; // c000 (0, 12) = 13
516 SBOX[4][53248] = 0x0; // d000 (0, 13) = 0
517 SBOX[4][57344] = 0x1040080; // e000 (0, 14) = 14
518 SBOX[4][61440] = 0x21000000; // f000 (0, 15) = 9
519 SBOX[4][2048] = 0x1040080; // 800 (1, 0) = 14
520 SBOX[4][6144] = 0x21000080; // 1800 (1, 1) = 11
521 SBOX[4][10240] = 0x80; // 2800 (1, 2) = 2
522 SBOX[4][14336] = 0x1040000; // 3800 (1, 3) = 12
523 SBOX[4][18432] = 0x40000; // 4800 (1, 4) = 4
524 SBOX[4][22528] = 0x20040080; // 5800 (1, 5) = 7
525 SBOX[4][26624] = 0x21040000; // 6800 (1, 6) = 13
526 SBOX[4][30720] = 0x20000000; // 7800 (1, 7) = 1
527 SBOX[4][34816] = 0x20040000; // 8800 (1, 8) = 5
528 SBOX[4][38912] = 0x0; // 9800 (1, 9) = 0
529 SBOX[4][43008] = 0x21040080; // a800 (1, 10) = 15
530 SBOX[4][47104] = 0x1000080; // b800 (1, 11) = 10
531 SBOX[4][51200] = 0x20000080; // c800 (1, 12) = 3
532 SBOX[4][55296] = 0x21000000; // d800 (1, 13) = 9
533 SBOX[4][59392] = 0x1000000; // e800 (1, 14) = 8
534 SBOX[4][63488] = 0x40080; // f800 (1, 15) = 6
535 SBOX[4][65536] = 0x40000; // 10000 (2, 0) = 4
536 SBOX[4][69632] = 0x80; // 11000 (2, 1) = 2
537 SBOX[4][73728] = 0x20000000; // 12000 (2, 2) = 1
538 SBOX[4][77824] = 0x21000080; // 13000 (2, 3) = 11
539 SBOX[4][81920] = 0x1000080; // 14000 (2, 4) = 10
540 SBOX[4][86016] = 0x21040000; // 15000 (2, 5) = 13
541 SBOX[4][90112] = 0x20040080; // 16000 (2, 6) = 7
542 SBOX[4][94208] = 0x1000000; // 17000 (2, 7) = 8
543 SBOX[4][98304] = 0x21040080; // 18000 (2, 8) = 15
544 SBOX[4][102400] = 0x21000000; // 19000 (2, 9) = 9
545 SBOX[4][106496] = 0x1040000; // 1a000 (2, 10) = 12
546 SBOX[4][110592] = 0x20040000; // 1b000 (2, 11) = 5
547 SBOX[4][114688] = 0x40080; // 1c000 (2, 12) = 6
548 SBOX[4][118784] = 0x20000080; // 1d000 (2, 13) = 3
549 SBOX[4][122880] = 0x0; // 1e000 (2, 14) = 0
550 SBOX[4][126976] = 0x1040080; // 1f000 (2, 15) = 14
551 SBOX[4][67584] = 0x21000080; // 10800 (3, 0) = 11
552 SBOX[4][71680] = 0x1000000; // 11800 (3, 1) = 8
553 SBOX[4][75776] = 0x1040000; // 12800 (3, 2) = 12
554 SBOX[4][79872] = 0x20040080; // 13800 (3, 3) = 7
555 SBOX[4][83968] = 0x20000000; // 14800 (3, 4) = 1
556 SBOX[4][88064] = 0x1040080; // 15800 (3, 5) = 14
557 SBOX[4][92160] = 0x80; // 16800 (3, 6) = 2
558 SBOX[4][96256] = 0x21040000; // 17800 (3, 7) = 13
559 SBOX[4][100352] = 0x40080; // 18800 (3, 8) = 6
560 SBOX[4][104448] = 0x21040080; // 19800 (3, 9) = 15
561 SBOX[4][108544] = 0x0; // 1a800 (3, 10) = 0
562 SBOX[4][112640] = 0x21000000; // 1b800 (3, 11) = 9
563 SBOX[4][116736] = 0x1000080; // 1c800 (3, 12) = 10
564 SBOX[4][120832] = 0x40000; // 1d800 (3, 13) = 4
565 SBOX[4][124928] = 0x20040000; // 1e800 (3, 14) = 5
566 SBOX[4][129024] = 0x20000080; // 1f800 (3, 15) = 3
567  
568 SBOX[5] = new Array();
569 SBOX[5][0] = 0x10000008; // 0 (0, 0) = 12
570 SBOX[5][256] = 0x2000; // 100 (0, 1) = 1
571 SBOX[5][512] = 0x10200000; // 200 (0, 2) = 10
572 SBOX[5][768] = 0x10202008; // 300 (0, 3) = 15
573 SBOX[5][1024] = 0x10002000; // 400 (0, 4) = 9
574 SBOX[5][1280] = 0x200000; // 500 (0, 5) = 2
575 SBOX[5][1536] = 0x200008; // 600 (0, 6) = 6
576 SBOX[5][1792] = 0x10000000; // 700 (0, 7) = 8
577 SBOX[5][2048] = 0x0; // 800 (0, 8) = 0
578 SBOX[5][2304] = 0x10002008; // 900 (0, 9) = 13
579 SBOX[5][2560] = 0x202000; // a00 (0, 10) = 3
580 SBOX[5][2816] = 0x8; // b00 (0, 11) = 4
581 SBOX[5][3072] = 0x10200008; // c00 (0, 12) = 14
582 SBOX[5][3328] = 0x202008; // d00 (0, 13) = 7
583 SBOX[5][3584] = 0x2008; // e00 (0, 14) = 5
584 SBOX[5][3840] = 0x10202000; // f00 (0, 15) = 11
585 SBOX[5][128] = 0x10200000; // 80 (1, 0) = 10
586 SBOX[5][384] = 0x10202008; // 180 (1, 1) = 15
587 SBOX[5][640] = 0x8; // 280 (1, 2) = 4
588 SBOX[5][896] = 0x200000; // 380 (1, 3) = 2
589 SBOX[5][1152] = 0x202008; // 480 (1, 4) = 7
590 SBOX[5][1408] = 0x10000008; // 580 (1, 5) = 12
591 SBOX[5][1664] = 0x10002000; // 680 (1, 6) = 9
592 SBOX[5][1920] = 0x2008; // 780 (1, 7) = 5
593 SBOX[5][2176] = 0x200008; // 880 (1, 8) = 6
594 SBOX[5][2432] = 0x2000; // 980 (1, 9) = 1
595 SBOX[5][2688] = 0x10002008; // a80 (1, 10) = 13
596 SBOX[5][2944] = 0x10200008; // b80 (1, 11) = 14
597 SBOX[5][3200] = 0x0; // c80 (1, 12) = 0
598 SBOX[5][3456] = 0x10202000; // d80 (1, 13) = 11
599 SBOX[5][3712] = 0x202000; // e80 (1, 14) = 3
600 SBOX[5][3968] = 0x10000000; // f80 (1, 15) = 8
601 SBOX[5][4096] = 0x10002000; // 1000 (2, 0) = 9
602 SBOX[5][4352] = 0x10200008; // 1100 (2, 1) = 14
603 SBOX[5][4608] = 0x10202008; // 1200 (2, 2) = 15
604 SBOX[5][4864] = 0x2008; // 1300 (2, 3) = 5
605 SBOX[5][5120] = 0x200000; // 1400 (2, 4) = 2
606 SBOX[5][5376] = 0x10000000; // 1500 (2, 5) = 8
607 SBOX[5][5632] = 0x10000008; // 1600 (2, 6) = 12
608 SBOX[5][5888] = 0x202000; // 1700 (2, 7) = 3
609 SBOX[5][6144] = 0x202008; // 1800 (2, 8) = 7
610 SBOX[5][6400] = 0x0; // 1900 (2, 9) = 0
611 SBOX[5][6656] = 0x8; // 1a00 (2, 10) = 4
612 SBOX[5][6912] = 0x10200000; // 1b00 (2, 11) = 10
613 SBOX[5][7168] = 0x2000; // 1c00 (2, 12) = 1
614 SBOX[5][7424] = 0x10002008; // 1d00 (2, 13) = 13
615 SBOX[5][7680] = 0x10202000; // 1e00 (2, 14) = 11
616 SBOX[5][7936] = 0x200008; // 1f00 (2, 15) = 6
617 SBOX[5][4224] = 0x8; // 1080 (3, 0) = 4
618 SBOX[5][4480] = 0x202000; // 1180 (3, 1) = 3
619 SBOX[5][4736] = 0x200000; // 1280 (3, 2) = 2
620 SBOX[5][4992] = 0x10000008; // 1380 (3, 3) = 12
621 SBOX[5][5248] = 0x10002000; // 1480 (3, 4) = 9
622 SBOX[5][5504] = 0x2008; // 1580 (3, 5) = 5
623 SBOX[5][5760] = 0x10202008; // 1680 (3, 6) = 15
624 SBOX[5][6016] = 0x10200000; // 1780 (3, 7) = 10
625 SBOX[5][6272] = 0x10202000; // 1880 (3, 8) = 11
626 SBOX[5][6528] = 0x10200008; // 1980 (3, 9) = 14
627 SBOX[5][6784] = 0x2000; // 1a80 (3, 10) = 1
628 SBOX[5][7040] = 0x202008; // 1b80 (3, 11) = 7
629 SBOX[5][7296] = 0x200008; // 1c80 (3, 12) = 6
630 SBOX[5][7552] = 0x0; // 1d80 (3, 13) = 0
631 SBOX[5][7808] = 0x10000000; // 1e80 (3, 14) = 8
632 SBOX[5][8064] = 0x10002008; // 1f80 (3, 15) = 13
633  
634 SBOX[6] = new Array();
635 SBOX[6][0] = 0x100000; // 0 (0, 0) = 4
636 SBOX[6][16] = 0x2000401; // 10 (0, 1) = 11
637 SBOX[6][32] = 0x400; // 20 (0, 2) = 2
638 SBOX[6][48] = 0x100401; // 30 (0, 3) = 14
639 SBOX[6][64] = 0x2100401; // 40 (0, 4) = 15
640 SBOX[6][80] = 0x0; // 50 (0, 5) = 0
641 SBOX[6][96] = 0x1; // 60 (0, 6) = 8
642 SBOX[6][112] = 0x2100001; // 70 (0, 7) = 13
643 SBOX[6][128] = 0x2000400; // 80 (0, 8) = 3
644 SBOX[6][144] = 0x100001; // 90 (0, 9) = 12
645 SBOX[6][160] = 0x2000001; // a0 (0, 10) = 9
646 SBOX[6][176] = 0x2100400; // b0 (0, 11) = 7
647 SBOX[6][192] = 0x2100000; // c0 (0, 12) = 5
648 SBOX[6][208] = 0x401; // d0 (0, 13) = 10
649 SBOX[6][224] = 0x100400; // e0 (0, 14) = 6
650 SBOX[6][240] = 0x2000000; // f0 (0, 15) = 1
651 SBOX[6][8] = 0x2100001; // 8 (1, 0) = 13
652 SBOX[6][24] = 0x0; // 18 (1, 1) = 0
653 SBOX[6][40] = 0x2000401; // 28 (1, 2) = 11
654 SBOX[6][56] = 0x2100400; // 38 (1, 3) = 7
655 SBOX[6][72] = 0x100000; // 48 (1, 4) = 4
656 SBOX[6][88] = 0x2000001; // 58 (1, 5) = 9
657 SBOX[6][104] = 0x2000000; // 68 (1, 6) = 1
658 SBOX[6][120] = 0x401; // 78 (1, 7) = 10
659 SBOX[6][136] = 0x100401; // 88 (1, 8) = 14
660 SBOX[6][152] = 0x2000400; // 98 (1, 9) = 3
661 SBOX[6][168] = 0x2100000; // a8 (1, 10) = 5
662 SBOX[6][184] = 0x100001; // b8 (1, 11) = 12
663 SBOX[6][200] = 0x400; // c8 (1, 12) = 2
664 SBOX[6][216] = 0x2100401; // d8 (1, 13) = 15
665 SBOX[6][232] = 0x1; // e8 (1, 14) = 8
666 SBOX[6][248] = 0x100400; // f8 (1, 15) = 6
667 SBOX[6][256] = 0x2000000; // 100 (2, 0) = 1
668 SBOX[6][272] = 0x100000; // 110 (2, 1) = 4
669 SBOX[6][288] = 0x2000401; // 120 (2, 2) = 11
670 SBOX[6][304] = 0x2100001; // 130 (2, 3) = 13
671 SBOX[6][320] = 0x100001; // 140 (2, 4) = 12
672 SBOX[6][336] = 0x2000400; // 150 (2, 5) = 3
673 SBOX[6][352] = 0x2100400; // 160 (2, 6) = 7
674 SBOX[6][368] = 0x100401; // 170 (2, 7) = 14
675 SBOX[6][384] = 0x401; // 180 (2, 8) = 10
676 SBOX[6][400] = 0x2100401; // 190 (2, 9) = 15
677 SBOX[6][416] = 0x100400; // 1a0 (2, 10) = 6
678 SBOX[6][432] = 0x1; // 1b0 (2, 11) = 8
679 SBOX[6][448] = 0x0; // 1c0 (2, 12) = 0
680 SBOX[6][464] = 0x2100000; // 1d0 (2, 13) = 5
681 SBOX[6][480] = 0x2000001; // 1e0 (2, 14) = 9
682 SBOX[6][496] = 0x400; // 1f0 (2, 15) = 2
683 SBOX[6][264] = 0x100400; // 108 (3, 0) = 6
684 SBOX[6][280] = 0x2000401; // 118 (3, 1) = 11
685 SBOX[6][296] = 0x2100001; // 128 (3, 2) = 13
686 SBOX[6][312] = 0x1; // 138 (3, 3) = 8
687 SBOX[6][328] = 0x2000000; // 148 (3, 4) = 1
688 SBOX[6][344] = 0x100000; // 158 (3, 5) = 4
689 SBOX[6][360] = 0x401; // 168 (3, 6) = 10
690 SBOX[6][376] = 0x2100400; // 178 (3, 7) = 7
691 SBOX[6][392] = 0x2000001; // 188 (3, 8) = 9
692 SBOX[6][408] = 0x2100000; // 198 (3, 9) = 5
693 SBOX[6][424] = 0x0; // 1a8 (3, 10) = 0
694 SBOX[6][440] = 0x2100401; // 1b8 (3, 11) = 15
695 SBOX[6][456] = 0x100401; // 1c8 (3, 12) = 14
696 SBOX[6][472] = 0x400; // 1d8 (3, 13) = 2
697 SBOX[6][488] = 0x2000400; // 1e8 (3, 14) = 3
698 SBOX[6][504] = 0x100001; // 1f8 (3, 15) = 12
699  
700 SBOX[7] = new Array();
701 SBOX[7][0] = 0x8000820; // 0 (0, 0) = 13
702 SBOX[7][1] = 0x20000; // 1 (0, 1) = 2
703 SBOX[7][2] = 0x8000000; // 2 (0, 2) = 8
704 SBOX[7][3] = 0x20; // 3 (0, 3) = 4
705 SBOX[7][4] = 0x20020; // 4 (0, 4) = 6
706 SBOX[7][5] = 0x8020820; // 5 (0, 5) = 15
707 SBOX[7][6] = 0x8020800; // 6 (0, 6) = 11
708 SBOX[7][7] = 0x800; // 7 (0, 7) = 1
709 SBOX[7][8] = 0x8020000; // 8 (0, 8) = 10
710 SBOX[7][9] = 0x8000800; // 9 (0, 9) = 9
711 SBOX[7][10] = 0x20800; // a (0, 10) = 3
712 SBOX[7][11] = 0x8020020; // b (0, 11) = 14
713 SBOX[7][12] = 0x820; // c (0, 12) = 5
714 SBOX[7][13] = 0x0; // d (0, 13) = 0
715 SBOX[7][14] = 0x8000020; // e (0, 14) = 12
716 SBOX[7][15] = 0x20820; // f (0, 15) = 7
717 SBOX[7][-2147483648] = 0x800; // 80000000 (1, 0) = 1
718 SBOX[7][-2147483647] = 0x8020820; // 80000001 (1, 1) = 15
719 SBOX[7][-2147483646] = 0x8000820; // 80000002 (1, 2) = 13
720 SBOX[7][-2147483645] = 0x8000000; // 80000003 (1, 3) = 8
721 SBOX[7][-2147483644] = 0x8020000; // 80000004 (1, 4) = 10
722 SBOX[7][-2147483643] = 0x20800; // 80000005 (1, 5) = 3
723 SBOX[7][-2147483642] = 0x20820; // 80000006 (1, 6) = 7
724 SBOX[7][-2147483641] = 0x20; // 80000007 (1, 7) = 4
725 SBOX[7][-2147483640] = 0x8000020; // 80000008 (1, 8) = 12
726 SBOX[7][-2147483639] = 0x820; // 80000009 (1, 9) = 5
727 SBOX[7][-2147483638] = 0x20020; // 8000000a (1, 10) = 6
728 SBOX[7][-2147483637] = 0x8020800; // 8000000b (1, 11) = 11
729 SBOX[7][-2147483636] = 0x0; // 8000000c (1, 12) = 0
730 SBOX[7][-2147483635] = 0x8020020; // 8000000d (1, 13) = 14
731 SBOX[7][-2147483634] = 0x8000800; // 8000000e (1, 14) = 9
732 SBOX[7][-2147483633] = 0x20000; // 8000000f (1, 15) = 2
733 SBOX[7][16] = 0x20820; // 10 (2, 0) = 7
734 SBOX[7][17] = 0x8020800; // 11 (2, 1) = 11
735 SBOX[7][18] = 0x20; // 12 (2, 2) = 4
736 SBOX[7][19] = 0x800; // 13 (2, 3) = 1
737 SBOX[7][20] = 0x8000800; // 14 (2, 4) = 9
738 SBOX[7][21] = 0x8000020; // 15 (2, 5) = 12
739 SBOX[7][22] = 0x8020020; // 16 (2, 6) = 14
740 SBOX[7][23] = 0x20000; // 17 (2, 7) = 2
741 SBOX[7][24] = 0x0; // 18 (2, 8) = 0
742 SBOX[7][25] = 0x20020; // 19 (2, 9) = 6
743 SBOX[7][26] = 0x8020000; // 1a (2, 10) = 10
744 SBOX[7][27] = 0x8000820; // 1b (2, 11) = 13
745 SBOX[7][28] = 0x8020820; // 1c (2, 12) = 15
746 SBOX[7][29] = 0x20800; // 1d (2, 13) = 3
747 SBOX[7][30] = 0x820; // 1e (2, 14) = 5
748 SBOX[7][31] = 0x8000000; // 1f (2, 15) = 8
749 SBOX[7][-2147483632] = 0x20000; // 80000010 (3, 0) = 2
750 SBOX[7][-2147483631] = 0x800; // 80000011 (3, 1) = 1
751 SBOX[7][-2147483630] = 0x8020020; // 80000012 (3, 2) = 14
752 SBOX[7][-2147483629] = 0x20820; // 80000013 (3, 3) = 7
753 SBOX[7][-2147483628] = 0x20; // 80000014 (3, 4) = 4
754 SBOX[7][-2147483627] = 0x8020000; // 80000015 (3, 5) = 10
755 SBOX[7][-2147483626] = 0x8000000; // 80000016 (3, 6) = 8
756 SBOX[7][-2147483625] = 0x8000820; // 80000017 (3, 7) = 13
757 SBOX[7][-2147483624] = 0x8020820; // 80000018 (3, 8) = 15
758 SBOX[7][-2147483623] = 0x8000020; // 80000019 (3, 9) = 12
759 SBOX[7][-2147483622] = 0x8000800; // 8000001a (3, 10) = 9
760 SBOX[7][-2147483621] = 0x0; // 8000001b (3, 11) = 0
761 SBOX[7][-2147483620] = 0x20800; // 8000001c (3, 12) = 3
762 SBOX[7][-2147483619] = 0x820; // 8000001d (3, 13) = 5
763 SBOX[7][-2147483618] = 0x20020; // 8000001e (3, 14) = 6
764 SBOX[7][-2147483617] = 0x8020800; // 8000001f (3, 15) = 11
765  
766 State.prototype._exchangeLR = function(v, m) {
767 var t = ((this.lhs >> v) ^ this.rhs) & m;
768 this.rhs ^= t;
769 this.lhs ^= (t << v);
770 };
771  
772 State.prototype._exchangeRL = function(v, m) {
773 var t = ((this.rhs >> v) ^ this.lhs) & m;
774 this.lhs ^= t;
775 this.rhs ^= (t << v);
776 };
777  
778 /**
779 * Perform the initial permutation of the input to create the starting state
780 * of the algorithm. The initial permutation maps each consecutive bit of
781 * the input into a different byte of the state.
782 *
783 * <pre>
784 * The initial permutation is defined to be:
785 *
786 * 58 50 42 34 26 18 10 2
787 * 60 52 44 36 28 20 12 4
788 * 62 54 46 38 30 22 14 6
789 * 64 56 48 40 32 24 16 8
790 * 57 49 41 33 25 17 9 1
791 * 59 51 43 35 27 19 11 3
792 * 61 53 45 37 29 21 13 5
793 * 63 55 47 39 31 23 15 7
794 * </pre>
795 *
796 *
797 * @param message
798 * The message as an array of unsigned bytes.
799 * @param offset
800 * The offset into the message that the current 64-bit block
801 * begins.
802 * @returns the initial engine state
803 */
804 State.prototype.initialPerm = function(message, offset) {
805 var input = message.slice(offset, offset + 8);
806  
807 this.lhs = (input[0] << 24) + (input[1] << 16) + (input[2] << 8)
808 + input[3];
809 this.rhs = (input[4] << 24) + (input[5] << 16) + (input[6] << 8)
810 + input[7];
811  
812 this._exchangeLR(4, 0x0f0f0f0f);
813 this._exchangeLR(16, 0x0000ffff);
814 this._exchangeRL(2, 0x33333333);
815 this._exchangeRL(8, 0x00ff00ff);
816 this._exchangeLR(1, 0x55555555);
817 };
818  
819 /**
820 * Perform one round of the DES algorithm using the given key. A round is
821 * defined as:
822 *
823 * <pre>
824 * L&amp;rsquo = R
825 * R&amp;rsquo = L &circ; f(R, k)
826 * </pre>
827 *
828 * where f consists of expanding, XORing with the key and contracting back
829 * with the SBOXes.
830 *
831 * Note that the final round is defined slightly differently as:
832 *
833 * <pre>
834 * L&amp;rsquo = L &circ; f(R, k)
835 * R&amp;rsquo = R
836 * </pre>
837 *
838 * Therefore in the final round this function produces LHS and RHS the wrong
839 * way around.
840 *
841 * @param k
842 * the key
843 */
844 State.prototype.round = function(k) {
845 var r = this.rhs, l = this.lhs;
846 var f = 0;
847 for ( var i = 0; i < 8; i++) {
848 var v = (r ^ k[i]) & State.SBOX_MASK[i];
849 f += State.SBOX[i][v];
850 }
851  
852 this.lhs = r;
853 this.rhs = l ^ f;
854 };
855  
856 /**
857 * Apply the inverse of the initial permutation.
858 *
859 * <pre>
860 * The inverse is defined to be:
861 *
862 * 40 8 48 16 56 24 64 32
863 * 39 7 47 15 55 23 63 31
864 * 38 6 46 14 54 22 62 30
865 * 37 5 45 13 53 21 61 29
866 * 36 4 44 12 52 20 60 28
867 * 35 3 43 11 51 19 59 27
868 * 34 2 42 10 50 18 58 26
869 * 33 1 41 9 49 17 57 25
870 * </pre>
871 *
872 * @param cipherText
873 * @param offset
874 */
875 State.prototype.finalPerm = function(cipherText, offset) {
876 var t = this.lhs;
877 this.lhs = this.rhs;
878 this.rhs = t;
879  
880 this._exchangeLR(1, 0x55555555);
881 this._exchangeRL(8, 0x00ff00ff);
882 this._exchangeRL(2, 0x33333333);
883 this._exchangeLR(16, 0x0000ffff);
884 this._exchangeLR(4, 0x0f0f0f0f);
885  
886 cipherText[offset] = (this.lhs >> 24) & 0xff;
887 cipherText[offset + 1] = (this.lhs >> 16) & 0xff;
888 cipherText[offset + 2] = (this.lhs >> 8) & 0xff;
889 cipherText[offset + 3] = (this.lhs) & 0xff;
890 cipherText[offset + 4] = (this.rhs >> 24) & 0xff;
891 cipherText[offset + 5] = (this.rhs >> 16) & 0xff;
892 cipherText[offset + 6] = (this.rhs >> 8) & 0xff;
893 cipherText[offset + 7] = (this.rhs) & 0xff;
894 };
895  
896 /**
897 * DES cipher
898 */
899 var DES = C.DES = {
900 _blocksize : 2,
901  
902 _keyschedule : null,
903  
904 _state : new State(),
905  
906 _init : function(k) {
907 this._keyschedule = new KeySchedule(k);
908 },
909  
910 encrypt : function(message, password, options) {
911  
912 options = options || {};
913  
914 // Determine mode
915 var mode = options.mode || new C.mode.OFB;
916  
917 // Allow mode to override options
918 if (mode.fixOptions)
919 mode.fixOptions(options);
920  
921 var
922 // Convert to bytes if message is a string
923 m = (message.constructor == String ? UTF8.stringToBytes(message)
924 : message),
925  
926 // Generate random IV
927 iv = options.iv || util.randomBytes(8),
928  
929 // Generate key
930 k = (password.constructor == String ?
931 // Derive key from passphrase
932 C.PBKDF2(password, iv, 8, {
933 asBytes : true
934 }) :
935 // else, assume byte array representing cryptographic key
936 password);
937  
938 // Create key schedule
939 this._keyschedule = new KeySchedule(k);
940  
941 // Encrypt
942 mode.encrypt(DES, m, iv);
943  
944 // Return ciphertext
945 m = options.iv ? m : iv.concat(m);
946 return (options && options.asBytes) ? m : util.bytesToBase64(m);
947 },
948  
949 _encryptblock : function(message, offset) {
950 this._state.initialPerm(message, offset);
951 for ( var i = 0; i <= 15; i++) {
952 this._state.round(this._keyschedule.getKey(i));
953 }
954 this._state.finalPerm(message, offset);
955 },
956  
957 decrypt : function(ciphertext, password, options) {
958 options = options || {};
959  
960 // Determine mode
961 var mode = options.mode || new C.mode.OFB;
962  
963 // Allow mode to override options
964 if (mode.fixOptions)
965 mode.fixOptions(options);
966  
967 var
968  
969 // Convert to bytes if ciphertext is a string
970 c = (ciphertext.constructor == String ? util
971 .base64ToBytes(ciphertext) : ciphertext),
972  
973 // Separate IV and message
974 iv = options.iv || c.splice(0, 8),
975  
976 // Generate key
977 k = (password.constructor == String ?
978 // Derive key from passphrase
979 C.PBKDF2(password, iv, 32, {
980 asBytes : true
981 }) :
982 // else, assume byte array representing cryptographic key
983 password);
984  
985 // Create key schedule
986 this._keyschedule = new KeySchedule(k);
987  
988 mode.decrypt(DES, c, iv);
989  
990 // Return plaintext
991 return (options && options.asBytes) ? c : UTF8.bytesToString(c);
992 },
993  
994 _decryptblock : function(message, offset) {
995 this._state.initialPerm(message, offset);
996 for ( var i = 15; i >= 0; i--) {
997 this._state.round(this._keyschedule.getKey(i));
998 }
999 this._state.finalPerm(message, offset);
1000 }
1001  
1002 };
1003 })();