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 bmw224_nextBlock
525 stack_alloc_large 32*4, r28, r29
534 ; push_range 28, 29 /* push Q */
535 ; push_range 22, 25 /* push M & H */
536 /* increment counter */
541 rcall load_acc_from_X
547 rcall store_acc_to_dec_X
567 /* calculate W and store it in Q */
571 /* load initial index */
573 /* load values from hacktable */
574 ldi r30, lo8(f0_hacktable-3)
575 ldi r31, hi8(f0_hacktable-3)
599 rcall load_acc_from_X
710 rcall load_acc_from_X
712 10: rcall load32_from_X
733 /* copy m(Y) into h */
741 ;--- /* calc first half of h0..h15 */
744 ldi r30, lo8(f2_1_shift_table)
745 ldi r31, hi8(f2_1_shift_table)
764 rcall store_acc_to_dec_X
770 sbiw r28, 4*8 /* Y points to q[24] */
773 sbiw r28, 33 /* Y points to q[0] */
776 /* xor q[24..31] into q[0..7] */
778 /* xor q[23] into q[8] */
782 /* xor q[16..22] into q[9..15] */
789 ldi r30, lo8(f2_2_shift_table-8)
790 ldi r31, hi8(f2_2_shift_table-8)
803 sbiw r26, 8*4 /* X points to h8 */
805 sbiw r28, 4*4 /* Y points to h4 */
828 stack_free_large3 32*4+4
840 /******************************************************************************/
859 /******************************************************************************/
866 .global bmw224_lastBlock
870 /* while(length_b >= BMW_SMALL_BLOCKSIZE){
871 bmw_small_nextBlock(ctx, block);
872 length_b -= BMW_SMALL_BLOCKSIZE;
873 block = (uint8_t*)block + BMW_SMALL_BLOCKSIZE_B;
884 rcall bmw_small_nextBlock_early
899 /* memset(pctx.buffer, 0, 64);
900 memcpy(pctx.buffer, block, (length_b+7)/8);
901 pctx.buffer[length_b>>3] |= 0x80 >> (length_b&0x07);
911 /* copy (#r24) bytes to stack buffer */
916 301: /* calculate the appended byte */
936 /* if(length_b+1>64*8-64){ ; = 64*7-1 = 447 max(length_b)=511
937 bmw_small_nextBlock(ctx, pctx.buffer);
938 memset(pctx.buffer, 0, 64-8);
947 rcall bmw_small_nextBlock_early
954 rcall load32_from_Z_stub
960 /* *((uint64_t*)&(pctx.buffer[64-8])) = (uint64_t)(ctx->counter*512LL)+(uint64_t)length_b;
961 bmw_small_nextBlock(ctx, pctx.buffer);
964 rcall load32_from_Z_stub
984 rcall bmw_small_nextBlock_early
985 /* memset(pctx.buffer, 0xaa, 64);
987 pctx.buffer[i*4] = i+0xa0;
1000 /* bmw_small_nextBlock((bmw_small_ctx_t*)&pctx, ctx->h);
1001 memcpy(ctx->h, pctx.buffer, 64);
1005 rcall bmw_small_nextBlock
1019 /*******************************************************************************
1020 * void bmw224_ctx2hash(void* dest, const bmw224_ctx_t* ctx){
1021 * memcpy(dest, &(ctx->h[9]), 224/8);
1024 * param dest: r24:r25
1025 * param ctx: r22:r23
1027 .global bmw224_ctx2hash
1040 /*******************************************************************************
1041 * void bmw224(void* dest, const void* msg, uint32_t length_b){
1042 * bmw_small_ctx_t ctx;
1043 * bmw224_init(&ctx);
1044 * while(length_b>=BMW_SMALL_BLOCKSIZE){
1045 * bmw_small_nextBlock(&ctx, msg);
1046 * length_b -= BMW_SMALL_BLOCKSIZE;
1047 * msg = (uint8_t*)msg + BMW_SMALL_BLOCKSIZE_B;
1049 * bmw_small_lastBlock(&ctx, msg, length_b);
1050 * bmw224_ctx2hash(dest, &ctx);
1053 * param dest: r24:r25
1054 * param msg: r22:r23
1055 * param length_b: r18:r21
1072 stack_alloc_large 64+4
1085 rcall bmw_small_nextBlock_early
1097 rcall bmw_small_lastBlock
1100 rcall bmw224_ctx2hash
1101 stack_free_large 64+4
1104 /*******************************************************************************
1105 * void bmw224_init(bmw224_ctx_t* ctx){
1107 * ctx->h[0] = 0x00010203;
1108 * for(i=1; i<16; ++i){
1109 * ctx->h[i] = ctx->h[i-1]+ 0x04040404;
1114 * param ctx: r24:r25
1138 /******************************************************************************/
1147 ldi r24, lo8(qdbg_str)
1148 ldi r25, hi8(qdbg_str)
1151 10: ldi r24, lo8(qdbg_str1)
1152 ldi r25, hi8(qdbg_str1)
1155 call cli_hexdump_byte
1156 ldi r24, lo8(qdbg_str2)
1157 ldi r25, hi8(qdbg_str2)
1162 call cli_hexdump_rev
1170 qdbg_str: .asciz "\r\nDBG Q: "
1171 qdbg_str1: .asciz "\r\n Q["
1172 qdbg_str2: .asciz "] = "
1183 ldi r24, lo8(Xdbg_str)
1184 ldi r25, hi8(Xdbg_str)
1191 10: ldi r24, lo8(Xdbg_str1)
1192 ldi r25, hi8(Xdbg_str1)
1199 call cli_hexdump_byte
1200 ldi r24, lo8(Xdbg_str2)
1201 ldi r25, hi8(Xdbg_str2)
1206 call cli_hexdump_rev
1216 Xdbg_str: .asciz "\r\nDBG "
1217 Xdbg_str1: .asciz "\r\n "
1218 Xdbg_str2: .asciz "] = "
1226 ldi r24, lo8(Xdbg_str)
1227 ldi r25, hi8(Xdbg_str)
1230 call cli_hexdump_byte
1232 call cli_hexdump_byte
1234 call cli_hexdump_byte
1236 call cli_hexdump_byte
1246 ldi r24, lo8(Xdbg_str)
1247 ldi r25, hi8(Xdbg_str)
1250 call cli_hexdump_byte
1252 call cli_hexdump_byte
1254 call cli_hexdump_byte
1256 call cli_hexdump_byte