3 This file is part of the ARM-Crypto-Lib.
4 Copyright (C) 2006-2010 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/>.
20 * \file groestl_small.c
22 * \email daniel.otte@rub.de
24 * \license GPLv3 or later
28 #include "groestl_small.h"
42 void dump_m(const uint8_t* m){
48 cli_hexdump(m+8*i+j, 1);
56 static const uint8_t matrix[] = {
57 2, 2, 3, 4, 5, 3, 5, 7,
58 7, 2, 2, 3, 4, 5, 3, 5,
59 5, 7, 2, 2, 3, 4, 5, 3,
60 3, 5, 7, 2, 2, 3, 4, 5,
61 5, 3, 5, 7, 2, 2, 3, 4,
62 4, 5, 3, 5, 7, 2, 2, 3,
63 3, 4, 5, 3, 5, 7, 2, 2,
64 2, 3, 4, 5, 3, 5, 7, 2
67 void groestl_small_rounds(uint8_t *m, uint8_t q){
70 for(r=0; r<ROUNDS; ++r){
78 cli_putstr("\r\npost add-const");
83 m[i] = aes_sbox[m[i]];
89 m[i+((j-i+8)%8)*8] = tmp[j];
94 cli_putstr("\r\npost shift-bytes");
99 memcpy(tmp, m+8*i, 8);
101 m[j+i*8] = gf256mul(matrix[8*j+0],tmp[0], POLYNOM)
102 ^ gf256mul(matrix[8*j+1],tmp[1], POLYNOM)
103 ^ gf256mul(matrix[8*j+2],tmp[2], POLYNOM)
104 ^ gf256mul(matrix[8*j+3],tmp[3], POLYNOM)
105 ^ gf256mul(matrix[8*j+4],tmp[4], POLYNOM)
106 ^ gf256mul(matrix[8*j+5],tmp[5], POLYNOM)
107 ^ gf256mul(matrix[8*j+6],tmp[6], POLYNOM)
108 ^ gf256mul(matrix[8*j+7],tmp[7], POLYNOM);
113 cli_putstr("\r\npost mix-bytes");
120 void groestl224_init(groestl224_ctx_t* ctx){
121 memset(ctx->h, 0, 8*8);
126 void groestl256_init(groestl256_ctx_t* ctx){
127 memset(ctx->h, 0, 8*8);
132 void groestl_small_nextBlock(groestl_small_ctx_t* ctx, const void* block){
133 uint8_t tmp1[64], tmp2[64];
134 /* for(i=0; i<8; ++i){
136 tmp1[j*8+i] = ((uint8_t*)block)[i*8+j];
140 memcpy(tmp1, block, 64);
141 memcpy(tmp2, tmp1, 64);
142 memxor(tmp1, ctx->h, 64);
143 groestl_small_rounds(tmp1, 0);
144 groestl_small_rounds(tmp2, 1);
145 memxor(ctx->h, tmp1, 64);
146 memxor(ctx->h, tmp2, 64);
150 void groestl_small_lastBlock(groestl_small_ctx_t* ctx, const void* block, uint16_t length_b){
152 while(length_b>=GROESTL_SMALL_BLOCKSIZE){
153 groestl_small_nextBlock(ctx, block);
154 length_b -= GROESTL_SMALL_BLOCKSIZE;
155 block = (uint8_t*)block + GROESTL_SMALL_BLOCKSIZE_B;
157 memset(buffer, 0, 64);
158 memcpy(buffer, block, (length_b+7)/8);
159 buffer[length_b/8] |= 0x80>>(length_b&0x7);
161 groestl_small_nextBlock(ctx, buffer);
162 memset(buffer, 0, 64-4);
165 buffer[64-1] = (uint8_t)(ctx->counter);
166 buffer[64-2] = (uint8_t)((ctx->counter)>>8);
167 buffer[64-3] = (uint8_t)((ctx->counter)>>16);
168 buffer[64-4] = (uint8_t)((ctx->counter)>>24);
169 groestl_small_nextBlock(ctx, buffer);
172 void groestl_small_ctx2hash(void* dest, const groestl_small_ctx_t* ctx, uint16_t outlength_b){
174 memcpy(tmp, ctx->h, 64);
175 groestl_small_rounds(tmp, 0);
176 memxor(tmp, ctx->h, 64);
178 cli_putstr("\r\npost finalisation");
181 memcpy(dest, tmp+64-outlength_b/8, outlength_b/8);
184 void groestl224_ctx2hash(void* dest, const groestl224_ctx_t* ctx){
185 groestl_small_ctx2hash(dest, ctx, 224);
188 void groestl256_ctx2hash(void* dest, const groestl256_ctx_t* ctx){
189 groestl_small_ctx2hash(dest, ctx, 256);
192 void groestl224_nextBlock(groestl224_ctx_t* ctx, const void* block){
193 groestl_small_nextBlock(ctx, block);
196 void groestl256_nextBlock(groestl256_ctx_t* ctx, const void* block){
197 groestl_small_nextBlock(ctx, block);
200 void groestl224_lastBlock(groestl224_ctx_t* ctx, const void* block, uint16_t length_b){
201 groestl_small_lastBlock(ctx, block, length_b);
204 void groestl256_lastBlock(groestl256_ctx_t* ctx, const void* block, uint16_t length_b){
205 groestl_small_lastBlock(ctx, block, length_b);
208 void groestl224(void* dest, const void* msg, uint32_t length_b){
209 groestl_small_ctx_t ctx;
210 groestl224_init(&ctx);
211 while(length_b>=GROESTL_SMALL_BLOCKSIZE){
212 groestl_small_nextBlock(&ctx, msg);
213 length_b -= GROESTL_SMALL_BLOCKSIZE;
214 msg = (uint8_t*)msg + GROESTL_SMALL_BLOCKSIZE_B;
216 groestl_small_lastBlock(&ctx, msg, length_b);
217 groestl_small_ctx2hash(dest, &ctx, 224);
220 void groestl256(void* dest, const void* msg, uint32_t length_b){
221 groestl_small_ctx_t ctx;
222 groestl256_init(&ctx);
223 while(length_b>=GROESTL_SMALL_BLOCKSIZE){
224 groestl_small_nextBlock(&ctx, msg);
225 length_b -= GROESTL_SMALL_BLOCKSIZE;
226 msg = (uint8_t*)msg + GROESTL_SMALL_BLOCKSIZE_B;
228 groestl_small_lastBlock(&ctx, msg, length_b);
229 groestl_small_ctx2hash(dest, &ctx, 256);