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"
31 /******************************************************************************/
33 param a: r22:r23:r24:r25
47 /******************************************************************************/
49 param a: r22:r23:r24:r25
72 /******************************************************************************/
74 param a: r22:r23:r24:r25
103 /******************************************************************************/
121 param x: r22:r23:r24:25
128 ldi r30, lo8(s_table)
129 ldi r31, hi8(s_table)
165 /******************************************************************************/
167 param dest: r26:r27 (X)
168 param src: r30:r31 (Z)
184 /******************************************************************************/
193 /******************************************************************************/
225 /******************************************************************************/
239 .byte 5*4,7*4,10*4,13*4,14*4
240 ; .byte 0 ; just for alignment
248 /******************************************************************************/
251 .long 0x55555550, 0x5aaaaaa5, 0x5ffffffa, 0x6555554f
252 .long 0x6aaaaaa4, 0x6ffffff9, 0x7555554e, 0x7aaaaaa3
253 .long 0x7ffffff8, 0x8555554d, 0x8aaaaaa2, 0x8ffffff7
254 .long 0x9555554c, 0x9aaaaaa1, 0x9ffffff6, 0xa555554b
256 /*******************************************************************************
257 * uint32_t addelment(uint8_t j, const uint32_t* m, const uint32_t* h){
259 * r = pgm_read_dword(k_lut+j);
260 * r += rotl_addel(((uint32_t*)m)[j&0xf], j+0);
261 * r += rotl_addel(((uint32_t*)m)[(j+3)&0xf], j+3);
262 * r -= rotl_addel(((uint32_t*)m)[(j+10)&0xf], j+10);
263 * r ^= ((uint32_t*)h)[(j+7)&0xf];
343 ldi r30, lo8(const_lut)
344 ldi r31, hi8(const_lut)
353 rcall load_rotate_add_M
356 rcall load_rotate_add_M
360 rcall load_rotate_add_M
379 /******************************************************************************/
413 /******************************************************************************/
422 .byte 0,3,0,7,0,13,0,16,0,19,0,23,0,27
427 ldi r30, lo8(expand2_rot_table)
428 ldi r31, hi8(expand2_rot_table)
452 /******************************************************************************/
458 /* for calling expand1/2
465 /******************************************************************************/
472 .byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
473 .byte 0x2B, 0x64, 0x66, 0x03, 0x51, 0x55, 0x87, 0x55
475 .byte (2<<1), (7<<1), (4<<1), (3<<1), (4<<1)+1, (6<<1)+1, (6<<1)
476 .byte 0 ; just for alignment
478 /******************************************************************************/
506 .global bmw_small_nextBlock
507 .global bmw224_nextBlock
508 .global bmw256_nextBlock
514 stack_alloc_large 32*4, r28, r29
516 ; push_range 28, 29 /* push Q */
517 ; push_range 22, 25 /* push M & H */
518 /* increment counter */
523 rcall load_acc_from_X
552 /* calculate W and store it in Q */
556 /* load initial index */
557 ldi r30, lo8(f0_indextable-1)
558 ldi r31, hi8(f0_indextable-1)
562 /* load values from hacktable */
563 ldi r30, lo8(f0_hacktable-2)
564 ldi r31, hi8(f0_hacktable-2)
611 ldi r30, lo8(f0_s_table)
612 ldi r31, hi8(f0_s_table)
706 10: rcall load32_from_X
728 ;--- /* calc first half of h0..h15 */
737 ldi r30, lo8(f2_1_shift_table-1)
738 ldi r31, hi8(f2_1_shift_table-1)
755 25: rcall shiftleft32
756 26: rcall eor32_to_acc
766 27: rcall shiftright32
767 28: rcall eor32_to_acc
779 sbiw r26, 4*8 /* X points to q[24] */
782 sbiw r28, 33 /* Y points to q[0] */
784 sbiw r30, 1 /* Z points to h0 */
795 sbiw r26, 9*4 /* X points to q[23] */
796 rcall load_acc_from_X
804 sbiw r26, 8*4 /* X points to q[16] */
808 ldi r30, lo8(f2_2_shift_table-1)
809 ldi r31, hi8(f2_2_shift_table-1)
813 rcall load_acc_from_X
820 20: rcall shiftright32
831 sbiw r30, 8*4 /* Z points to h8 */
833 sbiw r26, 4*4 /* X points to h4 */
856 stack_free_large3 32*4
861 /******************************************************************************/
880 /******************************************************************************/
887 .global bmw_small_lastBlock
888 .global bmw224_lastBlock
889 .global bmw256_lastBlock
893 /* while(length_b >= BMW_SMALL_BLOCKSIZE){
894 bmw_small_nextBlock(ctx, block);
895 length_b -= BMW_SMALL_BLOCKSIZE;
896 block = (uint8_t*)block + BMW_SMALL_BLOCKSIZE_B;
909 rcall bmw_small_nextBlock
924 /* memset(pctx.buffer, 0, 64);
925 memcpy(pctx.buffer, block, (length_b+7)/8);
926 pctx.buffer[length_b>>3] |= 0x80 >> (length_b&0x07);
937 /* copy (#r24) bytes to stack buffer */
942 301: /* calculate the appended byte */
962 /* if(length_b+1>64*8-64){ ; = 64*7-1 = 447 max(length_b)=511
963 bmw_small_nextBlock(ctx, pctx.buffer);
964 memset(pctx.buffer, 0, 64-8);
974 rcall bmw_small_nextBlock
981 rcall load32_from_Z_stub
987 /* *((uint64_t*)&(pctx.buffer[64-8])) = (uint64_t)(ctx->counter*512LL)+(uint64_t)length_b;
988 bmw_small_nextBlock(ctx, pctx.buffer);
991 rcall load32_from_Z_stub
1017 rcall bmw_small_nextBlock
1018 /* memset(pctx.buffer, 0xaa, 64);
1020 pctx.buffer[i*4] = i+0xa0;
1034 /* bmw_small_nextBlock((bmw_small_ctx_t*)&pctx, ctx->h);
1035 memcpy(ctx->h, pctx.buffer, 64);
1039 rcall bmw_small_nextBlock
1055 /*******************************************************************************
1056 * void bmw224_ctx2hash(void* dest, const bmw224_ctx_t* ctx){
1057 * memcpy(dest, &(ctx->h[9]), 224/8);
1060 * param dest: r24:r25
1061 * param ctx: r22:r23
1063 .global bmw224_ctx2hash
1071 /*******************************************************************************
1072 * void bmw256_ctx2hash(void* dest, const bmw256_ctx_t* ctx){
1073 * memcpy(dest, &(ctx->h[8]), 256/8);
1076 * param dest: r24:r25
1077 * param ctx: r22:r23
1079 .global bmw256_ctx2hash
1092 /*******************************************************************************
1093 * void bmw256(void* dest, const void* msg, uint32_t length_b){
1094 * bmw_small_ctx_t ctx;
1095 * bmw256_init(&ctx);
1096 * while(length_b>=BMW_SMALL_BLOCKSIZE){
1097 * bmw_small_nextBlock(&ctx, msg);
1098 * length_b -= BMW_SMALL_BLOCKSIZE;
1099 * msg = (uint8_t*)msg + BMW_SMALL_BLOCKSIZE_B;
1101 * bmw_small_lastBlock(&ctx, msg, length_b);
1102 * bmw256_ctx2hash(dest, &ctx);
1105 * param dest: r24:r25
1106 * param msg: r22:r23
1107 * param length_b: r18:r21
1125 /*******************************************************************************
1126 * void bmw224(void* dest, const void* msg, uint32_t length_b){
1127 * bmw_small_ctx_t ctx;
1128 * bmw224_init(&ctx);
1129 * while(length_b>=BMW_SMALL_BLOCKSIZE){
1130 * bmw_small_nextBlock(&ctx, msg);
1131 * length_b -= BMW_SMALL_BLOCKSIZE;
1132 * msg = (uint8_t*)msg + BMW_SMALL_BLOCKSIZE_B;
1134 * bmw_small_lastBlock(&ctx, msg, length_b);
1135 * bmw224_ctx2hash(dest, &ctx);
1138 * param dest: r24:r25
1139 * param msg: r22:r23
1140 * param length_b: r18:r21
1160 stack_alloc_large 64+4
1168 ldi r30, pm_lo8(init_lut)
1169 ldi r31, pm_hi8(init_lut)
1179 rcall bmw_small_nextBlock
1191 rcall bmw_small_lastBlock
1194 ldi r30, pm_lo8(c2h_lut)
1195 ldi r31, pm_hi8(c2h_lut)
1199 stack_free_large 64+4
1209 rjmp bmw224_ctx2hash
1210 rjmp bmw256_ctx2hash
1212 /*******************************************************************************
1213 * void bmw224_init(bmw224_ctx_t* ctx){
1215 * ctx->h[0] = 0x00010203;
1216 * for(i=1; i<16; ++i){
1217 * ctx->h[i] = ctx->h[i-1]+ 0x04040404;
1222 * param ctx: r24:r25
1265 /******************************************************************************/
1274 ldi r24, lo8(qdbg_str)
1275 ldi r25, hi8(qdbg_str)
1278 10: ldi r24, lo8(qdbg_str1)
1279 ldi r25, hi8(qdbg_str1)
1282 call cli_hexdump_byte
1283 ldi r24, lo8(qdbg_str2)
1284 ldi r25, hi8(qdbg_str2)
1289 call cli_hexdump_rev
1297 qdbg_str: .asciz "\r\nDBG Q: "
1298 qdbg_str1: .asciz "\r\n Q["
1299 qdbg_str2: .asciz "] = "
1310 ldi r24, lo8(Xdbg_str)
1311 ldi r25, hi8(Xdbg_str)
1318 10: ldi r24, lo8(Xdbg_str1)
1319 ldi r25, hi8(Xdbg_str1)
1326 call cli_hexdump_byte
1327 ldi r24, lo8(Xdbg_str2)
1328 ldi r25, hi8(Xdbg_str2)
1333 call cli_hexdump_rev
1343 Xdbg_str: .asciz "\r\nDBG "
1344 Xdbg_str1: .asciz "\r\n "
1345 Xdbg_str2: .asciz "] = "
1353 ldi r24, lo8(Xdbg_str)
1354 ldi r25, hi8(Xdbg_str)
1357 call cli_hexdump_byte
1359 call cli_hexdump_byte
1361 call cli_hexdump_byte
1363 call cli_hexdump_byte
1373 ldi r24, lo8(Xdbg_str)
1374 ldi r25, hi8(Xdbg_str)
1377 call cli_hexdump_byte
1379 call cli_hexdump_byte
1381 call cli_hexdump_byte
1383 call cli_hexdump_byte