/* twister-big.c */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 Daniel Otte (daniel.otte@rub.de)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
#include <stdint.h>
#include <string.h>
#include "twister.h"
#include "twister-big.h"
-#undef DEBUG
-#define DEBUG
-
-#ifdef DEBUG
-#include <avr/pgmspace.h>
-#include "uart.h"
-void print_checksum(twister_big_ctx_t* ctx, PGM_P s){
- uint8_t i;
- uart_putstr_P(PSTR("\r\n"));
- uart_putstr_P(s);
- uart_putstr_P(PSTR("\r\n checksum:\r\n"));
- for(i=0; i<8; ++i){
- uart_putstr_P(PSTR(" [ "));
- uart_hexdump(&(ctx->checksum[i][0]), 8);
- uart_putstr_P(PSTR("]\r\n"));
- }
-}
-
-void print_matrix(void* m, PGM_P s){
- uint8_t i;
- uart_putstr_P(PSTR("\r\n"));
- uart_putstr_P(s);
- uart_putstr_P(PSTR("\r\n matrix:\r\n"));
- for(i=0; i<8; ++i){
- uart_putstr_P(PSTR(" [ "));
- uart_hexdump(((uint8_t*)m)+i*8, 8);
- uart_putstr_P(PSTR("]\r\n"));
- }
-}
-
-#define DEBUG_CHKSUM(a,s) print_checksum((a),PSTR(s))
-#else
-#define DEBUG_CHKSUM(a,s)
-#endif
-
-
-#ifdef DEBUG
-# define DEBUG_PRINT(ctx, msg) debug_print((ctx), PSTR(msg))
-#else
-# define DEBUG_PRINT(ctx, msg)
-#endif
-
-#ifdef DEBUG
-
-void print_twister_state(twister_state_t* ctx){
- uint8_t i;
- uart_putstr_P(PSTR("\r\nState:\r\n matrix:\r\n"));
- for(i=0; i<8; ++i){
- uart_putstr_P(PSTR("\t[ "));
- uart_hexdump(&(ctx->s[i][0]), 8);
- uart_putstr_P(PSTR("]\r\n"));
- }
- uart_putstr_P(PSTR("counter: "));
- uart_hexdump(&(ctx->counter), 8);
-
- uart_putstr_P(PSTR("\r\nlength_counter_b: "));
- uart_hexdump(&(ctx->length_counter_b), 8);
- uart_putstr_P(PSTR("\r\n"));
-}
-
-void debug_print(twister_state_t* ctx, PGM_P msg){
- uart_putstr_P(PSTR("\r\n"));
- uart_putstr_P(msg);
- print_twister_state(ctx);
-}
-
-#endif
-
-void transp_matrix(void* dest, void* src){
- uint8_t i,j;
- for(i=0; i<8; i++){
- for(j=0; j<8; ++j){
- ((uint8_t*)dest)[i*8+j] = ((uint8_t*)src)[j*8+i];
- }
- }
-}
+/*********************************************************************/
static
void checksum_update(twister_big_ctx_t* ctx, uint8_t col){
carry = sum>>8;
}
-// DEBUG_CHKSUM(ctx, "post run");
}
+/*********************************************************************/
+
void twister_big_init(twister_big_ctx_t* ctx, uint16_t hashsize_b){
memset(ctx->state.s, 0, 64);
memset(ctx->checksum, 0, 64);
ctx->state.length_counter_b = 0;
}
-void twister_big_nextBlock(twister_big_ctx_t* ctx, void* msg){
+/*********************************************************************/
+
+void twister_big_nextBlock(twister_big_ctx_t* ctx, const void* msg){
uint8_t tmp[8][8];
/* 1st maxi round */
ctx->state.length_counter_b += 512;
}
+/*********************************************************************/
+
void twister_inject_chksum(twister_big_ctx_t* ctx, uint8_t col){
*((uint64_t*)(&ctx->state.s[7][0])) ^= *((uint64_t*)(&ctx->checksum[col][0]));
twister_blank_round(&ctx->state);
}
-void twister_big_lastBlock(twister_big_ctx_t* ctx, void* msg, uint16_t length_b){
+/*********************************************************************/
+
+void twister_big_lastBlock(twister_big_ctx_t* ctx, const void* msg, uint16_t length_b){
uint8_t tmp[64];
while(length_b>512){
twister_big_nextBlock(ctx, msg);
ctx->state.length_counter_b -= 512 - length_b;
twister_mini_round(&(ctx->state), &(ctx->state.length_counter_b));
-// DEBUG_PRINT(&(ctx->state), "pre check-round");
-
memcpy(tmp, ctx->state.s, 64);
twister_inject_chksum(ctx, 0);
twister_inject_chksum(ctx, 1);
twister_blank_round(&(ctx->state));
memxor(ctx->state.s, tmp, 64);
-
-// DEBUG_PRINT(&(ctx->state), "post check-round");
}
+/*********************************************************************/
+
void twister_big_ctx2hash(void* dest, twister_big_ctx_t* ctx, uint16_t hashsize_b){
twister_ctx2hash(dest, &(ctx->state), hashsize_b);
}
-/******************************************************************************/
-/******************************************************************************/
+/*********************************************************************/
+/*********************************************************************/
void twister384_init(twister384_ctx_t* ctx){
twister_big_init(ctx, 384);
}
-void twister384_nextBlock(twister384_ctx_t* ctx, void* msg){
+/*********************************************************************/
+
+void twister384_nextBlock(twister384_ctx_t* ctx, const void* msg){
twister_big_nextBlock(ctx, msg);
}
-void twister384_lastBlock(twister384_ctx_t* ctx, void* msg, uint16_t length_b){
+/*********************************************************************/
+
+void twister384_lastBlock(twister384_ctx_t* ctx, const void* msg, uint16_t length_b){
twister_big_lastBlock(ctx, msg, length_b);
}
+/*********************************************************************/
+
void twister384_ctx2hash(void* dest, twister384_ctx_t* ctx){
twister_big_ctx2hash(dest, ctx, 384);
}
-void twister384(void* dest, void* msg, uint32_t msg_length_b){
+/*********************************************************************/
+
+void twister384(void* dest, const void* msg, uint32_t msg_length_b){
twister_big_ctx_t ctx;
twister_big_init(&ctx, 384);
while(msg_length_b >=512){
twister_big_ctx2hash(dest, &ctx, 384);
}
-/******************************************************************************/
+/*********************************************************************/
+/*********************************************************************/
+
void twister512_init(twister512_ctx_t* ctx){
twister_big_init(ctx, 512);
}
-void twister512_nextBlock(twister512_ctx_t* ctx, void* msg){
+/*********************************************************************/
+
+void twister512_nextBlock(twister512_ctx_t* ctx, const void* msg){
twister_big_nextBlock(ctx, msg);
}
-void twister512_lastBlock(twister512_ctx_t* ctx, void* msg, uint16_t length_b){
+/*********************************************************************/
+
+void twister512_lastBlock(twister512_ctx_t* ctx, const void* msg, uint16_t length_b){
twister_big_lastBlock(ctx, msg, length_b);
}
+/*********************************************************************/
+
void twister512_ctx2hash(void* dest, twister512_ctx_t* ctx){
twister_big_ctx2hash(dest, ctx, 512);
}
-void twister512(void* dest, void* msg, uint32_t msg_length_b){
+/*********************************************************************/
+
+void twister512(void* dest, const void* msg, uint32_t msg_length_b){
twister_big_ctx_t ctx;
twister_big_init(&ctx, 512);
while(msg_length_b >=512){
projects / avr-crypto-lib.git / blobdiff