+/* noekeon.c */
+/*
+ This file is part of the Crypto-avr-lib/microcrypt-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/>.
+*/
/*
* author: Daniel Otte
* email: daniel.otte@rub.de
- * license: GPLv3
+ * license: GPLv3 or later
*
*
*
#include <string.h>
#include <avr/pgmspace.h>
#include "noekeon.h"
+// #include "uart.h"
#define ROUND_NR 16
static
void theta(uint32_t* k, uint32_t* a){
uint32_t temp;
+
temp = a[0] ^ a[2]; temp ^= ROTR32(temp, 8) ^ ROTL32(temp, 8);
a[1] ^= temp;
a[3] ^= temp;
temp = a[1] ^ a[3]; temp ^= ROTR32(temp, 8) ^ ROTL32(temp, 8);
a[0] ^= temp;
a[2] ^= temp;
+
}
static
memcpy(dkey, key, 16);
theta((uint32_t*)nullv, (uint32_t*)dkey);
+// uart_putstr_P(PSTR("\r\nTheta: "));
+// uart_hexdump(dkey, 16);
+
for(i=ROUND_NR-1; i>=0; --i){
rc = pgm_read_byte(rc_tab+i);
noekeon_round((uint32_t*)dkey, (uint32_t*)buffer, 0, rc);