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/>.
31 #include <util/delay.h>
33 /*****************************************************************************/
36 uint8_t rol(uint8_t a, uint8_t n){
37 return ((a<<n) | (a>>(8-n)));
40 /*****************************************************************************/
43 uint8_t ror(uint8_t a, uint8_t n){
44 return ((a<<(8-n)) | (a>>n));
47 /*****************************************************************************/
50 uint32_t rol32(uint32_t a, uint8_t n){
51 return ((a<<n)|(a>>(32-n)));
54 /*****************************************************************************/
57 uint64_t rol64(uint64_t a, uint8_t n){
58 return ((a<<n)|(a>>(64-n)));
61 /*****************************************************************************/
64 const uint8_t camellia_s1_table[256] = {
65 112, 130, 44, 236, 179, 39, 192, 229, 228, 133, 87, 53, 234, 12, 174, 65,
66 35, 239, 107, 147, 69, 25, 165, 33, 237, 14, 79, 78, 29, 101, 146, 189,
67 134, 184, 175, 143, 124, 235, 31, 206, 62, 48, 220, 95, 94, 197, 11, 26,
68 166, 225, 57, 202, 213, 71, 93, 61, 217, 1, 90, 214, 81, 86, 108, 77,
69 139, 13, 154, 102, 251, 204, 176, 45, 116, 18, 43, 32, 240, 177, 132, 153,
70 223, 76, 203, 194, 52, 126, 118, 5, 109, 183, 169, 49, 209, 23, 4, 215,
71 20, 88, 58, 97, 222, 27, 17, 28, 50, 15, 156, 22, 83, 24, 242, 34,
72 254, 68, 207, 178, 195, 181, 122, 145, 36, 8, 232, 168, 96, 252, 105, 80,
73 170, 208, 160, 125, 161, 137, 98, 151, 84, 91, 30, 149, 224, 255, 100, 210,
74 16, 196, 0, 72, 163, 247, 117, 219, 138, 3, 230, 218, 9, 63, 221, 148,
75 135, 92, 131, 2, 205, 74, 144, 51, 115, 103, 246, 243, 157, 127, 191, 226,
76 82, 155, 216, 38, 200, 55, 198, 59, 129, 150, 111, 75, 19, 190, 99, 46,
77 233, 121, 167, 140, 159, 110, 188, 142, 41, 245, 249, 182, 47, 253, 180, 89,
78 120, 152, 6, 106, 231, 70, 113, 186, 212, 37, 171, 66, 136, 162, 141, 250,
79 114, 7, 185, 85, 248, 238, 172, 10, 54, 73, 42, 104, 60, 56, 241, 164,
80 64, 40, 211, 123, 187, 201, 67, 193, 21, 227, 173, 244, 119, 199, 128, 158
83 /*****************************************************************************/
86 uint8_t camellia_s1(uint8_t b){
87 return camellia_s1_table[b];
90 /*****************************************************************************/
93 uint8_t camellia_s2(uint8_t b){
94 return rol(camellia_s1_table[b], 1);
97 /*****************************************************************************/
100 uint8_t camellia_s3(uint8_t b){
101 return ror(camellia_s1_table[b], 1);
104 /*****************************************************************************/
107 uint8_t camellia_s4(uint8_t b){
108 return camellia_s1_table[rol(b, 1)];
111 /*****************************************************************************/
114 uint64_t camellia_s(uint64_t d){
115 // cli_putstr("\n\r S von "); cli_hexdump(&(d), 8);
116 #define D ((uint8_t*)(&d))
117 D[7] = camellia_s1(D[7]);
118 D[6] = camellia_s2(D[6]);
119 D[5] = camellia_s3(D[5]);
120 D[4] = camellia_s4(D[4]);
122 D[3] = camellia_s2(D[3]);
123 D[2] = camellia_s3(D[2]);
124 D[1] = camellia_s4(D[1]);
125 D[0] = camellia_s1(D[0]);
127 // cli_putstr(" ist "); cli_hexdump(&(d), 8);
131 /*****************************************************************************/
134 uint64_t camellia_p(uint64_t d){
136 #define D ((uint8_t*)(&d))
137 #define Z ((uint8_t*)(&z))
139 Z[0] = D[4] ^ D[3] ^ D[1];
140 Z[1] = D[5] ^ D[0] ^ D[2];
141 Z[2] = D[6] ^ D[1] ^ D[3];
142 Z[3] = D[7] ^ D[2] ^ D[0];
143 Z[4] = D[0] ^ D[6] ^ D[5];
144 Z[5] = D[1] ^ D[7] ^ D[6];
145 Z[6] = D[2] ^ D[4] ^ D[7];
146 Z[7] = D[3] ^ D[5] ^ D[4];
148 // Z[7] = z1 z3 z4 z6 z7 z8
149 // cli_putstr("\n\r P von "); cli_hexdump(&(d), 8);
151 Z[7] = D[7] ^ D[5] ^ D[4] ^ D[2] ^ D[1] ^ D[0];
152 Z[6] = D[7] ^ D[6] ^ D[4] ^ D[3] ^ D[1] ^ D[0];
153 Z[5] = D[7] ^ D[6] ^ D[5] ^ D[3] ^ D[2] ^ D[0];
154 Z[4] = D[6] ^ D[5] ^ D[4] ^ D[3] ^ D[2] ^ D[1] ;
155 Z[3] = D[7] ^ D[6] ^ D[2] ^ D[1] ^ D[0];
156 Z[2] = D[6] ^ D[5] ^ D[3] ^ D[1] ^ D[0];
157 Z[1] = D[5] ^ D[4] ^ D[3] ^ D[2] ^ D[0];
158 Z[0] = D[7] ^ D[4] ^ D[3] ^ D[2] ^ D[1] ;
160 // cli_putstr(" ist "); cli_hexdump(&(z), 8);
167 /*****************************************************************************/
170 uint64_t camellia_f(uint64_t x, uint64_t k){
172 y = camellia_p(camellia_s(x ^ k));
176 /*****************************************************************************/
179 uint64_t camellia_fl(uint64_t x, uint64_t k){
180 // uint64_t lx, lk, y;
181 uint32_t lx[2], lk[2], yr, yl;
183 lx[1]=(uint32_t)(x>>32);
185 lk[1]=(uint32_t)(k>>32);
186 #define Y ((uint32_t*)y)
187 #define X ((uint32_t*)lx)
188 #define K ((uint32_t*)lk)
190 yr = rol32((X[1]) & (K[1]) ,1) ^ (X[0]); /* Yr */
191 yl = (yr | K[0]) ^ (X[1]); /* Yl */
194 cli_putstr("\r\nFL(");
195 cli_hexdump(&(x), 8);
197 cli_hexdump(&(k), 8);
204 return (((uint64_t)yl)<<32 | yr);
207 /*****************************************************************************/
210 uint64_t camellia_fl_inv(uint64_t y, uint64_t k){
211 //volatile uint32_t xl, xr;
212 uint32_t ly[2], lk[2], x[2];
214 ly[1]=(uint32_t)(y>>32);
216 lk[1]=(uint32_t)(k>>32);
217 #define Y ((uint32_t*)ly)
218 #define X ((uint32_t*)x)
219 #define K ((uint32_t*)lk)
221 X[1]=(Y[0] | K[0]) ^ Y[1];
222 X[0]=rol32((X[1] & K[1]),1) ^ Y[0];
225 cli_putstr("\r\nFL_inv(");
226 cli_hexdump(&(y), 8);
228 cli_hexdump(&(k), 8);
234 return ((uint64_t)(x[1]))<<32 | x[0];
237 /*****************************************************************************/
240 const uint64_t camellia_sigma_table[6] = {
241 0xA09E667F3BCC908BLL,
242 0xB67AE8584CAA73B2LL,
243 0xC6EF372FE94F82BELL,
244 0x54FF53A5F1D36F1CLL,
245 0x10E527FADE682D1DLL,
249 /*****************************************************************************/
251 void camellia128_ctx_dump(camellia128_ctx_t *s){
252 cli_putstr("\r\n==State Dump==");
253 cli_putstr("\n\rKAl: "); cli_hexdump(&(s->kal), 8);
254 cli_putstr("\n\rKAr: "); cli_hexdump(&(s->kar), 8);
255 cli_putstr("\n\rKLl: "); cli_hexdump(&(s->kll), 8);
256 cli_putstr("\n\rKLr: "); cli_hexdump(&(s->klr), 8);
260 /*****************************************************************************/
262 void camellia128_init(const void* key, camellia128_ctx_t* s){
264 s->kll = 0; //((uint64_t*)key)[0];
266 /* load the key, endian-adjusted, to kll,klr */
269 s->kll |= *((uint8_t*)key);
270 key = (uint8_t*)key+1;
274 s->klr |= *((uint8_t*)key);
275 key = (uint8_t*)key+1;
281 s->kar ^= camellia_f(s->kal, camellia_sigma_table[0]);
282 s->kal ^= camellia_f(s->kar, camellia_sigma_table[1]);
287 s->kar ^= camellia_f(s->kal, camellia_sigma_table[2]);
288 s->kal ^= camellia_f(s->kar, camellia_sigma_table[3]);
290 // cli_putstr("\n\r----------------init finished--------------------");
293 /*****************************************************************************/
296 void camellia128_keyop(camellia128_ctx_t* s, int8_t q){
297 /* first we do 16 bit left-rols for kl and ka (128bit each) */
300 temp = (s->kal)>>(64-16-q);
301 s->kal = s->kal<<(16+q) | s->kar>>(64-16-q);
302 s->kar = s->kar<<(16+q) | temp;
304 temp = (s->kll)>>(64-16-q);
305 s->kll = s->kll<<(16+q) | s->klr>>(64-16-q);
306 s->klr = s->klr<<(16+q) | temp;
307 /* after doing the 16-bit rol we have to rol 1 bit left or rigth depending on q */
310 /*****************************************************************************/
313 void camellia128_keyop_inv(camellia128_ctx_t* s, int8_t q){
314 /* first we do 16 bit right-rols for kl and ka (128bit each) */
317 temp = (s->kar)&(0xffffff>>(24-16-q));
318 s->kar = s->kar>>(16+q) | s->kal<<(64-16-q);
319 s->kal = s->kal>>(16+q) | ((uint64_t)temp)<<(64-16-q);
321 temp = (s->klr)&(0xffffff>>(24-16-q));
322 s->klr = s->klr>>(16+q) | s->kll<<(64-16-q);
323 s->kll = s->kll>>(16+q) | ((uint64_t)temp)<<(64-16-q);
324 /* after doing the 16-bit rol we have to rol 1 bit left or rigth depending on q */
327 /*****************************************************************************/
332 #define KEY_POSTC1 0x00
333 #define KEY_POSTC2 0x01
334 #define KEY_INC2 0x02
337 #define KEY_DIR_NORM 0x00
338 #define KEY_DIR_INV 0x04
340 #define KEY_AMMOUNT 0x08
341 #define KEY_ROL17 0x08
342 #define KEY_ROL15 0x00
345 void camellia_6rounds(const camellia128_ctx_t* s, uint64_t* bl, uint64_t* br, uint8_t roundop, uint8_t keychoice){
348 k[0] = &(((camellia128_ctx_t*)s)->kll);
349 k[1] = &(((camellia128_ctx_t*)s)->klr);
350 k[2] = &(((camellia128_ctx_t*)s)->kal);
351 k[3] = &(((camellia128_ctx_t*)s)->kar);
352 for(i=0; i<3; ++i){ /* each cycle */
353 br[0] ^= camellia_f(bl[0],*(k[(keychoice&1)*2+((roundop&KEY_DIR)?1:0)]));
356 if((i == 1) && (roundop&KEY_INC2)){
357 ((roundop&KEY_DIR)?camellia128_keyop_inv:camellia128_keyop)(((camellia128_ctx_t*)s),(roundop&KEY_AMMOUNT)?1:-1);
360 bl[0] ^= camellia_f(br[0],*(k[(keychoice&1)*2+((roundop&KEY_DIR)?0:1)]));
363 /* check if we should do some keyop */
364 if((i == (roundop&1)) && (!(roundop&KEY_INC2)) ){
365 ((roundop&KEY_DIR)?camellia128_keyop_inv:camellia128_keyop)(((camellia128_ctx_t*)s),(roundop&KEY_AMMOUNT)?1:-1);
366 /* isn't it fuckin nice what we can do in C?! */
371 /*****************************************************************************/
374 void change_endian(void* data, uint8_t length){
376 for(i=0; i<length/2; ++i){
377 a = ((uint8_t*)data)[i];
378 ((uint8_t*)data)[i] = ((uint8_t*)data)[length-i-1];
379 ((uint8_t*)data)[length-i-1] = a;
383 /*****************************************************************************/
385 void camellia128_enc(void* block, const camellia128_ctx_t* s){
387 #define BL (((uint64_t*)block)[0])
388 #define BR (((uint64_t*)block)[1])
389 /* endian adjustment */
397 change_endian(&BL, 64/8);
398 change_endian(&BR, 64/8);
405 camellia_6rounds(s, &BL, &BR, KEY_ROL15 | KEY_DIR_NORM | KEY_POSTC1 , 0x33);
407 camellia128_keyop((camellia128_ctx_t*)s, -1);
408 BL = camellia_fl(BL, s->kal);
409 BR = camellia_fl_inv(BR, s->kar);
410 camellia128_keyop((camellia128_ctx_t*)s, -1);
412 camellia_6rounds(s, &BL, &BR, KEY_ROL15 | KEY_DIR_NORM | KEY_INC2 , 0x34);
414 camellia128_keyop((camellia128_ctx_t*)s, 1);
415 BL = camellia_fl(BL, s->kll);
416 BR = camellia_fl_inv(BR, s->klr);
417 camellia128_keyop((camellia128_ctx_t*)s, 1);
419 camellia_6rounds(s, &BL, &BR, KEY_ROL17 | KEY_DIR_NORM | KEY_POSTC2 , 0x0C);
428 camellia128_keyop((camellia128_ctx_t*)s,1);
430 change_endian(&BL, 64/8);
431 change_endian(&BR, 64/8);
437 /*****************************************************************************/
439 void camellia128_dec(void* block, const camellia128_ctx_t* s){
441 #define BL (((uint64_t*)block)[1])
442 #define BR (((uint64_t*)block)[0])
443 /* endian adjustment */
450 change_endian(&BL, 64/8);
451 change_endian(&BR, 64/8);
453 camellia128_keyop_inv((camellia128_ctx_t*)s, 1);
455 BR ^= s->kal; /* kw3 */
456 BL ^= s->kar; /* kw4 */
458 camellia_6rounds(s, &BR, &BL, KEY_ROL17 | KEY_DIR_INV | KEY_POSTC1 , 0x0C);
460 camellia128_keyop_inv((camellia128_ctx_t*)s, 1);
461 BR = camellia_fl(BR, s->klr);
462 BL = camellia_fl_inv(BL, s->kll);
463 camellia128_keyop_inv((camellia128_ctx_t*)s, 1);
465 camellia_6rounds(s, &BR, &BL, KEY_ROL15 | KEY_DIR_INV | KEY_INC2 , 0x0B);
467 camellia128_keyop_inv((camellia128_ctx_t*)s, -1);
468 BR = camellia_fl(BR, s->kar);
469 BL = camellia_fl_inv(BL, s->kal);
470 camellia128_keyop_inv((camellia128_ctx_t*)s, -1);
472 camellia_6rounds(s, &BR, &BL, KEY_ROL15 | KEY_DIR_INV | KEY_POSTC2 , 0x33);
475 BL ^= s->kll; /* kw1 */
476 BR ^= s->klr; /* kw2 */
482 change_endian(&BL, 64/8);
483 change_endian(&BR, 64/8);
489 /*****************************************************************************/
490 /*****************************************************************************/