renaming to AVR-Crypto-Lib

[avr-crypto-lib.git] / twister.c

diff --git a/twister.c b/twister.c
index af82c139fd2ba9517e13e564df71eafb60ae7552..5dd3808396eb9bb992c46bb880f573bee962311e 100644 (file)
--- a/twister.c
+++ b/twister.c
@@ -1,6 +1,6 @@
 /* twister.c */
 /*
-    This file is part of the Crypto-avr-lib/microcrypt-lib.
+    This file is part of the 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
@@ -29,77 +29,29 @@
 # include "gf256mul.h"
 #endif
 
-#undef DEBUG
-
-#ifdef DEBUG
-# include "uart.h"
-#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
-
-static
-void shiftrow(void* row, uint8_t shift){
-       *((uint64_t*)row) = *((uint64_t*)row)>>(8*shift) | *((uint64_t*)row)<<(64-8*shift);
-}
-
 #define MDS(a,b)  pgm_read_byte(&(twister_mds[(a)][(b)]))
 
 #ifdef TWISTER_MUL_TABLE
-# define MULT(a,b) pgm_read_byte(&(twister_multab[a][b]))
+# define MULT(a,b) pgm_read_byte(&(twister_multab[(a)][(b)]))
 #else
 # define MULT(a,b) gf256mul((a),(b), 0x4D)
 #endif
+
 void twister_blank_round(twister_state_t* ctx){
-       uint8_t i,j,k=0;
+       uint8_t i,j,k;
        uint8_t tmp[8][8];
-       DEBUG_PRINT(ctx, "blank init");
        /* add twist counter */
        for(i=0; i<8; ++i){
                ctx->s[i][1] ^= ((uint8_t*)&(ctx->counter))[7-i];
        }
        ctx->counter--;
-//     DEBUG_PRINT(ctx, "counter added");
        /* sub bytes */
        for(i=0; i<8; ++i){
                for(j=0;j<8;++j){
                        tmp[i][j] = pgm_read_byte(twister_sbox+ctx->s[i][j]);
                }
        }
-       /* shift rows */
-//     for(i=1;i<8; ++i){
-//             shiftrow(&(tmp[i][0]), i);
-//     }
-       /* mix columns */
+       /* mix columns with integrates shift rows */
        for( i=0; i<8; i++ ){
                // multiply with mds matrix
                for( j=0; j<8; j++ ){
@@ -116,10 +68,9 @@ void twister_blank_round(twister_state_t* ctx){
                                
                }       
        }
-       DEBUG_PRINT(ctx, "post MDS");
 }
 
-void twister_mini_round(twister_state_t* ctx, void* msg){
+void twister_mini_round(twister_state_t* ctx, const void* msg){
        /* inject message */
        uint8_t i;
        for(i=0; i<8; ++i){