1 /* bmw_small-tinyasm.S */
3 This file is part of the AVR-Crypto-Lib.
4 Copyright (C) 2009 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/>.
21 * File: bmw_small-tinyasm.S
24 * License: GPLv3 or later
25 * Description: implementation of BlueMidnightWish
29 #include "avr-asm-macros.S"
38 /******************************************************************************/
40 param a: r22:r23:r24:r25
59 /******************************************************************************/
61 param a: r22:r23:r24:r25
84 /******************************************************************************/
86 param a: r22:r23:r24:r25
116 /******************************************************************************/
144 param x: r22:r23:r24:25
153 ldi r30, lo8(s_table)
154 ldi r31, hi8(s_table)
182 /******************************************************************************/
184 param dest: r26:r27 (X)
185 param src: r30:r31 (Z)
202 /******************************************************************************/
211 /******************************************************************************/
256 /******************************************************************************/
264 ; .byte 0x2B, 0x64, 0x66, 0x03, 0x51, 0x55, 0x87, 0x55
265 ; .byte 0x55, 0x87, 0x55, 0x51, 0x03, 0x66, 0x64, 0x2B
266 .byte 5, -5, -7, 8, -5, 5, -1, 5, -3, 0, 6, -6, -4, 6, -11, 2
268 ; .byte (2<<1), (7<<1), (4<<1), (3<<1), (4<<1)+1, (6<<1)+1, (6<<1)
269 .byte 8, -6, 6, 4, -3, -4, -7, -2
271 .byte 3,7,13,16,19,23,27
274 .byte 0x03, 0x11, 5*4
275 .byte 0xDD, 0xB3, 7*4
276 .byte 0x2A, 0x79, 10*4
277 .byte 0x07, 0xAA, 13*4
278 .byte 0x51, 0xC2, 14*4
281 /*******************************************************************************
282 * uint32_t addelment(uint8_t j, const uint32_t* m, const uint32_t* h){
284 * r = pgm_read_dword(k_lut+j);
285 * r += rotl_addel(((uint32_t*)m)[j&0xf], j+0);
286 * r += rotl_addel(((uint32_t*)m)[(j+3)&0xf], j+3);
287 * r -= rotl_addel(((uint32_t*)m)[(j+10)&0xf], j+10);
288 * r ^= ((uint32_t*)h)[(j+7)&0xf];
351 /******************************************************************************/
377 rcall load_acc_from_X
384 rcall store_acc_to_dec_X
387 rcall load_rotate_add_M
389 rcall load_rotate_add_M
392 rcall load_rotate_add_M
423 /******************************************************************************/
435 ldi r30, lo8(expand2_rot_table)
436 ldi r31, hi8(expand2_rot_table)
443 12: rcall add32_to_acc
459 /******************************************************************************/
465 /* for calling expand1/2
472 /******************************************************************************/
479 /******************************************************************************/
515 bmw_small_nextBlock_early:
518 .global bmw_small_nextBlock
519 .global bmw224_nextBlock
520 .global bmw256_nextBlock
527 stack_alloc_large 32*4, r28, r29
536 ; push_range 28, 29 /* push Q */
537 ; push_range 22, 25 /* push M & H */
538 /* increment counter */
543 rcall load_acc_from_X
549 rcall store_acc_to_dec_X
569 /* calculate W and store it in Q */
573 /* load initial index */
575 /* load values from hacktable */
576 ldi r30, lo8(f0_hacktable-3)
577 ldi r31, hi8(f0_hacktable-3)
601 rcall load_acc_from_X
712 rcall load_acc_from_X
714 10: rcall load32_from_X
735 /* copy m(Y) into h */
743 ;--- /* calc first half of h0..h15 */
746 ldi r30, lo8(f2_1_shift_table)
747 ldi r31, hi8(f2_1_shift_table)
766 rcall store_acc_to_dec_X
772 sbiw r28, 4*8 /* Y points to q[24] */
775 sbiw r28, 33 /* Y points to q[0] */
778 /* xor q[24..31] into q[0..7] */
780 /* xor q[23] into q[8] */
784 /* xor q[16..22] into q[9..15] */
791 ldi r30, lo8(f2_2_shift_table-8)
792 ldi r31, hi8(f2_2_shift_table-8)
805 sbiw r26, 8*4 /* X points to h8 */
807 sbiw r28, 4*4 /* Y points to h4 */
830 stack_free_large3 32*4+4
842 /******************************************************************************/
861 /******************************************************************************/
868 .global bmw_small_lastBlock
869 .global bmw224_lastBlock
870 .global bmw256_lastBlock
874 /* while(length_b >= BMW_SMALL_BLOCKSIZE){
875 bmw_small_nextBlock(ctx, block);
876 length_b -= BMW_SMALL_BLOCKSIZE;
877 block = (uint8_t*)block + BMW_SMALL_BLOCKSIZE_B;
888 rcall bmw_small_nextBlock_early
903 /* memset(pctx.buffer, 0, 64);
904 memcpy(pctx.buffer, block, (length_b+7)/8);
905 pctx.buffer[length_b>>3] |= 0x80 >> (length_b&0x07);
915 /* copy (#r24) bytes to stack buffer */
920 301: /* calculate the appended byte */
940 /* if(length_b+1>64*8-64){ ; = 64*7-1 = 447 max(length_b)=511
941 bmw_small_nextBlock(ctx, pctx.buffer);
942 memset(pctx.buffer, 0, 64-8);
951 rcall bmw_small_nextBlock_early
958 rcall load32_from_Z_stub
964 /* *((uint64_t*)&(pctx.buffer[64-8])) = (uint64_t)(ctx->counter*512LL)+(uint64_t)length_b;
965 bmw_small_nextBlock(ctx, pctx.buffer);
968 rcall load32_from_Z_stub
988 rcall bmw_small_nextBlock_early
989 /* memset(pctx.buffer, 0xaa, 64);
991 pctx.buffer[i*4] = i+0xa0;
1004 /* bmw_small_nextBlock((bmw_small_ctx_t*)&pctx, ctx->h);
1005 memcpy(ctx->h, pctx.buffer, 64);
1009 rcall bmw_small_nextBlock
1023 /*******************************************************************************
1024 * void bmw224_ctx2hash(void* dest, const bmw224_ctx_t* ctx){
1025 * memcpy(dest, &(ctx->h[9]), 224/8);
1028 * param dest: r24:r25
1029 * param ctx: r22:r23
1031 .global bmw224_ctx2hash
1038 /*******************************************************************************
1039 * void bmw256_ctx2hash(void* dest, const bmw256_ctx_t* ctx){
1040 * memcpy(dest, &(ctx->h[8]), 256/8);
1043 * param dest: r24:r25
1044 * param ctx: r22:r23
1046 .global bmw256_ctx2hash
1058 /*******************************************************************************
1059 * void bmw256(void* dest, const void* msg, uint32_t length_b){
1060 * bmw_small_ctx_t ctx;
1061 * bmw256_init(&ctx);
1062 * while(length_b>=BMW_SMALL_BLOCKSIZE){
1063 * bmw_small_nextBlock(&ctx, msg);
1064 * length_b -= BMW_SMALL_BLOCKSIZE;
1065 * msg = (uint8_t*)msg + BMW_SMALL_BLOCKSIZE_B;
1067 * bmw_small_lastBlock(&ctx, msg, length_b);
1068 * bmw256_ctx2hash(dest, &ctx);
1071 * param dest: r24:r25
1072 * param msg: r22:r23
1073 * param length_b: r18:r21
1091 /*******************************************************************************
1092 * void bmw224(void* dest, const void* msg, uint32_t length_b){
1093 * bmw_small_ctx_t ctx;
1094 * bmw224_init(&ctx);
1095 * while(length_b>=BMW_SMALL_BLOCKSIZE){
1096 * bmw_small_nextBlock(&ctx, msg);
1097 * length_b -= BMW_SMALL_BLOCKSIZE;
1098 * msg = (uint8_t*)msg + BMW_SMALL_BLOCKSIZE_B;
1100 * bmw_small_lastBlock(&ctx, msg, length_b);
1101 * bmw224_ctx2hash(dest, &ctx);
1104 * param dest: r24:r25
1105 * param msg: r22:r23
1106 * param length_b: r18:r21
1128 stack_alloc_large 64+4
1139 ldi r30, pm_lo8(init_lut)
1140 ldi r31, pm_hi8(init_lut)
1148 rcall bmw_small_nextBlock_early
1160 rcall bmw_small_lastBlock
1163 ldi r30, pm_lo8(c2h_lut)
1164 ldi r31, pm_hi8(c2h_lut)
1168 stack_free_large 64+4
1176 rjmp bmw224_ctx2hash
1177 rjmp bmw256_ctx2hash
1179 /*******************************************************************************
1180 * void bmw224_init(bmw224_ctx_t* ctx){
1182 * ctx->h[0] = 0x00010203;
1183 * for(i=1; i<16; ++i){
1184 * ctx->h[i] = ctx->h[i-1]+ 0x04040404;
1189 * param ctx: r24:r25
1220 /******************************************************************************/
1229 ldi r24, lo8(qdbg_str)
1230 ldi r25, hi8(qdbg_str)
1233 10: ldi r24, lo8(qdbg_str1)
1234 ldi r25, hi8(qdbg_str1)
1237 call cli_hexdump_byte
1238 ldi r24, lo8(qdbg_str2)
1239 ldi r25, hi8(qdbg_str2)
1244 call cli_hexdump_rev
1252 qdbg_str: .asciz "\r\nDBG Q: "
1253 qdbg_str1: .asciz "\r\n Q["
1254 qdbg_str2: .asciz "] = "
1265 ldi r24, lo8(Xdbg_str)
1266 ldi r25, hi8(Xdbg_str)
1273 10: ldi r24, lo8(Xdbg_str1)
1274 ldi r25, hi8(Xdbg_str1)
1281 call cli_hexdump_byte
1282 ldi r24, lo8(Xdbg_str2)
1283 ldi r25, hi8(Xdbg_str2)
1288 call cli_hexdump_rev
1298 Xdbg_str: .asciz "\r\nDBG "
1299 Xdbg_str1: .asciz "\r\n "
1300 Xdbg_str2: .asciz "] = "
1308 ldi r24, lo8(Xdbg_str)
1309 ldi r25, hi8(Xdbg_str)
1312 call cli_hexdump_byte
1314 call cli_hexdump_byte
1316 call cli_hexdump_byte
1318 call cli_hexdump_byte
1328 ldi r24, lo8(Xdbg_str)
1329 ldi r25, hi8(Xdbg_str)
1332 call cli_hexdump_byte
1334 call cli_hexdump_byte
1336 call cli_hexdump_byte
1338 call cli_hexdump_byte