3 This file is part of the AVR-Crypto-Lib.
4 Copyright (C) 2008 Daniel Otte (daniel.otte@rub.de)
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
28 #include <avr/pgmspace.h>
33 #include <util/delay.h>
35 /*****************************************************************************/
37 uint8_t rol(uint8_t a, uint8_t n){return ((a<<n) | (a>>(8-n)));}
39 /*****************************************************************************/
41 uint8_t ror(uint8_t a, uint8_t n){return ((a<<(8-n)) | (a>>n));}
43 /*****************************************************************************/
45 uint32_t rol32(uint32_t a, uint8_t n){
46 return ((a<<n)|(a>>(32-n)));
49 /*****************************************************************************/
51 uint64_t rol64(uint64_t a, uint8_t n){
52 return ((a<<n)|(a>>(64-n)));
55 /*****************************************************************************/
57 uint8_t camellia_s1_table[256] PROGMEM = {
58 112, 130, 44, 236, 179, 39, 192, 229, 228, 133, 87, 53, 234, 12, 174, 65,
59 35, 239, 107, 147, 69, 25, 165, 33, 237, 14, 79, 78, 29, 101, 146, 189,
60 134, 184, 175, 143, 124, 235, 31, 206, 62, 48, 220, 95, 94, 197, 11, 26,
61 166, 225, 57, 202, 213, 71, 93, 61, 217, 1, 90, 214, 81, 86, 108, 77,
62 139, 13, 154, 102, 251, 204, 176, 45, 116, 18, 43, 32, 240, 177, 132, 153,
63 223, 76, 203, 194, 52, 126, 118, 5, 109, 183, 169, 49, 209, 23, 4, 215,
64 20, 88, 58, 97, 222, 27, 17, 28, 50, 15, 156, 22, 83, 24, 242, 34,
65 254, 68, 207, 178, 195, 181, 122, 145, 36, 8, 232, 168, 96, 252, 105, 80,
66 170, 208, 160, 125, 161, 137, 98, 151, 84, 91, 30, 149, 224, 255, 100, 210,
67 16, 196, 0, 72, 163, 247, 117, 219, 138, 3, 230, 218, 9, 63, 221, 148,
68 135, 92, 131, 2, 205, 74, 144, 51, 115, 103, 246, 243, 157, 127, 191, 226,
69 82, 155, 216, 38, 200, 55, 198, 59, 129, 150, 111, 75, 19, 190, 99, 46,
70 233, 121, 167, 140, 159, 110, 188, 142, 41, 245, 249, 182, 47, 253, 180, 89,
71 120, 152, 6, 106, 231, 70, 113, 186, 212, 37, 171, 66, 136, 162, 141, 250,
72 114, 7, 185, 85, 248, 238, 172, 10, 54, 73, 42, 104, 60, 56, 241, 164,
73 64, 40, 211, 123, 187, 201, 67, 193, 21, 227, 173, 244, 119, 199, 128, 158
76 /*****************************************************************************/
78 uint8_t camellia_s1(uint8_t b){
79 return pgm_read_byte_near(&(camellia_s1_table[b]));
82 /*****************************************************************************/
84 uint8_t camellia_s2(uint8_t b){
85 return rol(pgm_read_byte_near(&(camellia_s1_table[b])),1);
88 /*****************************************************************************/
90 uint8_t camellia_s3(uint8_t b){
91 return ror(pgm_read_byte_near(&(camellia_s1_table[b])),1);
94 /*****************************************************************************/
96 uint8_t camellia_s4(uint8_t b){
97 return pgm_read_byte_near(&(camellia_s1_table[rol(b,1)]));
100 /*****************************************************************************/
102 uint64_t camellia_s(uint64_t d){
103 // cli_putstr("\n\r S von "); cli_hexdump(&(d), 8);
104 #define D ((uint8_t*)(&d))
105 D[7] = camellia_s1(D[7]);
106 D[6] = camellia_s2(D[6]);
107 D[5] = camellia_s3(D[5]);
108 D[4] = camellia_s4(D[4]);
110 D[3] = camellia_s2(D[3]);
111 D[2] = camellia_s3(D[2]);
112 D[1] = camellia_s4(D[1]);
113 D[0] = camellia_s1(D[0]);
115 // cli_putstr(" ist "); cli_hexdump(&(d), 8);
119 /*****************************************************************************/
121 uint64_t camellia_p(uint64_t d){
123 #define D ((uint8_t*)(&d))
124 #define Z ((uint8_t*)(&z))
126 Z[0] = D[4] ^ D[3] ^ D[1];
127 Z[1] = D[5] ^ D[0] ^ D[2];
128 Z[2] = D[6] ^ D[1] ^ D[3];
129 Z[3] = D[7] ^ D[2] ^ D[0];
130 Z[4] = D[0] ^ D[6] ^ D[5];
131 Z[5] = D[1] ^ D[7] ^ D[6];
132 Z[6] = D[2] ^ D[4] ^ D[7];
133 Z[7] = D[3] ^ D[5] ^ D[4];
135 // Z[7] = z1 z3 z4 z6 z7 z8
136 // cli_putstr("\n\r P von "); cli_hexdump(&(d), 8);
138 Z[7] = D[7] ^ D[5] ^ D[4] ^ D[2] ^ D[1] ^ D[0];
139 Z[6] = D[7] ^ D[6] ^ D[4] ^ D[3] ^ D[1] ^ D[0];
140 Z[5] = D[7] ^ D[6] ^ D[5] ^ D[3] ^ D[2] ^ D[0];
141 Z[4] = D[6] ^ D[5] ^ D[4] ^ D[3] ^ D[2] ^ D[1] ;
142 Z[3] = D[7] ^ D[6] ^ D[2] ^ D[1] ^ D[0];
143 Z[2] = D[6] ^ D[5] ^ D[3] ^ D[1] ^ D[0];
144 Z[1] = D[5] ^ D[4] ^ D[3] ^ D[2] ^ D[0];
145 Z[0] = D[7] ^ D[4] ^ D[3] ^ D[2] ^ D[1] ;
147 // cli_putstr(" ist "); cli_hexdump(&(z), 8);
154 /*****************************************************************************/
156 uint64_t camellia_f(uint64_t x, uint64_t k){
158 y = camellia_p(camellia_s(x ^ k));
162 /*****************************************************************************/
164 uint64_t camellia_fl(uint64_t x, uint64_t k){
165 // uint64_t lx, lk, y;
166 uint32_t lx[2], lk[2], yr, yl;
168 lx[1]=(uint32_t)(x>>32);
170 lk[1]=(uint32_t)(k>>32);
171 #define Y ((uint32_t*)y)
172 #define X ((uint32_t*)lx)
173 #define K ((uint32_t*)lk)
175 yr = rol32((X[1]) & (K[1]) ,1) ^ (X[0]); /* Yr */
176 yl = (yr | K[0]) ^ (X[1]); /* Yl */
179 cli_putstr("\r\nFL(");
180 cli_hexdump(&(x), 8);
182 cli_hexdump(&(k), 8);
189 return (((uint64_t)yl)<<32 | yr);
192 /*****************************************************************************/
194 uint64_t camellia_fl_inv(uint64_t y, uint64_t k){
195 //volatile uint32_t xl, xr;
196 uint32_t ly[2], lk[2], x[2];
198 ly[1]=(uint32_t)(y>>32);
200 lk[1]=(uint32_t)(k>>32);
201 #define Y ((uint32_t*)ly)
202 #define X ((uint32_t*)x)
203 #define K ((uint32_t*)lk)
205 X[1]=(Y[0] | K[0]) ^ Y[1];
206 X[0]=rol32((X[1] & K[1]),1) ^ Y[0];
209 cli_putstr("\r\nFL_inv(");
210 cli_hexdump(&(y), 8);
212 cli_hexdump(&(k), 8);
218 return ((uint64_t)(x[1]))<<32 | x[0];
221 /*****************************************************************************/
223 uint64_t camellia_sigma[6]={
224 0xA09E667F3BCC908BLL,
225 0xB67AE8584CAA73B2LL,
226 0xC6EF372FE94F82BELL,
227 0x54FF53A5F1D36F1CLL,
228 0x10E527FADE682D1DLL,
232 /*****************************************************************************/
234 void camellia128_ctx_dump(camellia128_ctx_t *s){
235 cli_putstr("\r\n==State Dump==");
236 cli_putstr("\n\rKAl: "); cli_hexdump(&(s->kal), 8);
237 cli_putstr("\n\rKAr: "); cli_hexdump(&(s->kar), 8);
238 cli_putstr("\n\rKLl: "); cli_hexdump(&(s->kll), 8);
239 cli_putstr("\n\rKLr: "); cli_hexdump(&(s->klr), 8);
243 /*****************************************************************************/
245 void camellia128_init(const void* key, camellia128_ctx_t* s){
247 s->kll = 0; //((uint64_t*)key)[0];
249 /* load the key, endian-adjusted, to kll,klr */
252 s->kll |= *((uint8_t*)key);
253 key = (uint8_t*)key+1;
257 s->klr |= *((uint8_t*)key);
258 key = (uint8_t*)key+1;
264 s->kar ^= camellia_f(s->kal, camellia_sigma[0]);
265 s->kal ^= camellia_f(s->kar, camellia_sigma[1]);
270 s->kar ^= camellia_f(s->kal, camellia_sigma[2]);
271 s->kal ^= camellia_f(s->kar, camellia_sigma[3]);
273 // cli_putstr("\n\r----------------init finished--------------------");
276 /*****************************************************************************/
278 void camellia128_keyop(camellia128_ctx_t* s, int8_t q){
279 /* first we do 16 bit left-rols for kl and ka (128bit each) */
282 temp = (s->kal)>>(64-16-q);
283 s->kal = s->kal<<(16+q) | s->kar>>(64-16-q);
284 s->kar = s->kar<<(16+q) | temp;
286 temp = (s->kll)>>(64-16-q);
287 s->kll = s->kll<<(16+q) | s->klr>>(64-16-q);
288 s->klr = s->klr<<(16+q) | temp;
289 /* after doing the 16-bit rol we have to rol 1 bit left or rigth depending on q */
292 /*****************************************************************************/
294 void camellia128_keyop_inv(camellia128_ctx_t* s, int8_t q){
295 /* first we do 16 bit right-rols for kl and ka (128bit each) */
298 temp = (s->kar)&(0xffffff>>(24-16-q));
299 s->kar = s->kar>>(16+q) | s->kal<<(64-16-q);
300 s->kal = s->kal>>(16+q) | ((uint64_t)temp)<<(64-16-q);
302 temp = (s->klr)&(0xffffff>>(24-16-q));
303 s->klr = s->klr>>(16+q) | s->kll<<(64-16-q);
304 s->kll = s->kll>>(16+q) | ((uint64_t)temp)<<(64-16-q);
305 /* after doing the 16-bit rol we have to rol 1 bit left or rigth depending on q */
308 /*****************************************************************************/
313 #define KEY_POSTC1 0x00
314 #define KEY_POSTC2 0x01
315 #define KEY_INC2 0x02
318 #define KEY_DIR_NORM 0x00
319 #define KEY_DIR_INV 0x04
321 #define KEY_AMMOUNT 0x08
322 #define KEY_ROL17 0x08
323 #define KEY_ROL15 0x00
325 void camellia_6rounds(const camellia128_ctx_t* s, uint64_t* bl, uint64_t* br, uint8_t roundop, uint8_t keychoice){
328 k[0] = &(((camellia128_ctx_t*)s)->kll);
329 k[1] = &(((camellia128_ctx_t*)s)->klr);
330 k[2] = &(((camellia128_ctx_t*)s)->kal);
331 k[3] = &(((camellia128_ctx_t*)s)->kar);
332 for(i=0; i<3; ++i){ /* each cycle */
333 br[0] ^= camellia_f(bl[0],*(k[(keychoice&1)*2+((roundop&KEY_DIR)?1:0)]));
336 if((i == 1) && (roundop&KEY_INC2)){
337 ((roundop&KEY_DIR)?camellia128_keyop_inv:camellia128_keyop)(((camellia128_ctx_t*)s),(roundop&KEY_AMMOUNT)?1:-1);
340 bl[0] ^= camellia_f(br[0],*(k[(keychoice&1)*2+((roundop&KEY_DIR)?0:1)]));
343 /* check if we should do some keyop */
344 if((i == (roundop&1)) && (!(roundop&KEY_INC2)) ){
345 ((roundop&KEY_DIR)?camellia128_keyop_inv:camellia128_keyop)(((camellia128_ctx_t*)s),(roundop&KEY_AMMOUNT)?1:-1);
346 /* isn't it fuckin nice what we can do in C?! */
351 /*****************************************************************************/
353 void change_endian(void* data, uint8_t length){
355 for(i=0; i<length/2; ++i){
356 a = ((uint8_t*)data)[i];
357 ((uint8_t*)data)[i] = ((uint8_t*)data)[length-i-1];
358 ((uint8_t*)data)[length-i-1] = a;
362 /*****************************************************************************/
364 void camellia128_enc(void* block, const camellia128_ctx_t* s){
366 #define BL (((uint64_t*)block)[0])
367 #define BR (((uint64_t*)block)[1])
368 /* endian adjustment */
376 change_endian(&BL, 64/8);
377 change_endian(&BR, 64/8);
384 camellia_6rounds(s, &BL, &BR, KEY_ROL15 | KEY_DIR_NORM | KEY_POSTC1 , 0x33);
386 camellia128_keyop((camellia128_ctx_t*)s, -1);
387 BL = camellia_fl(BL, s->kal);
388 BR = camellia_fl_inv(BR, s->kar);
389 camellia128_keyop((camellia128_ctx_t*)s, -1);
391 camellia_6rounds(s, &BL, &BR, KEY_ROL15 | KEY_DIR_NORM | KEY_INC2 , 0x34);
393 camellia128_keyop((camellia128_ctx_t*)s, 1);
394 BL = camellia_fl(BL, s->kll);
395 BR = camellia_fl_inv(BR, s->klr);
396 camellia128_keyop((camellia128_ctx_t*)s, 1);
398 camellia_6rounds(s, &BL, &BR, KEY_ROL17 | KEY_DIR_NORM | KEY_POSTC2 , 0x0C);
407 camellia128_keyop((camellia128_ctx_t*)s,1);
409 change_endian(&BL, 64/8);
410 change_endian(&BR, 64/8);
416 /*****************************************************************************/
418 void camellia128_dec(void* block, const camellia128_ctx_t* s){
420 #define BL (((uint64_t*)block)[1])
421 #define BR (((uint64_t*)block)[0])
422 /* endian adjustment */
429 change_endian(&BL, 64/8);
430 change_endian(&BR, 64/8);
432 camellia128_keyop_inv((camellia128_ctx_t*)s, 1);
434 BR ^= s->kal; /* kw3 */
435 BL ^= s->kar; /* kw4 */
437 camellia_6rounds(s, &BR, &BL, KEY_ROL17 | KEY_DIR_INV | KEY_POSTC1 , 0x0C);
439 camellia128_keyop_inv((camellia128_ctx_t*)s, 1);
440 BR = camellia_fl(BR, s->klr);
441 BL = camellia_fl_inv(BL, s->kll);
442 camellia128_keyop_inv((camellia128_ctx_t*)s, 1);
444 camellia_6rounds(s, &BR, &BL, KEY_ROL15 | KEY_DIR_INV | KEY_INC2 , 0x0B);
446 camellia128_keyop_inv((camellia128_ctx_t*)s, -1);
447 BR = camellia_fl(BR, s->kar);
448 BL = camellia_fl_inv(BL, s->kal);
449 camellia128_keyop_inv((camellia128_ctx_t*)s, -1);
451 camellia_6rounds(s, &BR, &BL, KEY_ROL15 | KEY_DIR_INV | KEY_POSTC2 , 0x33);
454 BL ^= s->kll; /* kw1 */
455 BR ^= s->klr; /* kw2 */
461 change_endian(&BL, 64/8);
462 change_endian(&BR, 64/8);
468 /*****************************************************************************/
469 /*****************************************************************************/