insereated GPLv3 stub

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

diff --git a/camellia.c b/camellia.c
index d838c6bf8f5faacde3055e23491e5ad269846d44..e0e21597d4433c6bb4e22682f7bf60f2c5e5c702 100644 (file)
--- a/camellia.c
+++ b/camellia.c
@@ -1,3 +1,21 @@
+/* camellia.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/>.
+*/
 /**
  * 
  * 
@@ -21,8 +39,8 @@ uint64_t camellia_fl(uint64_t x, uint64_t k);
 uint64_t camellia_fl_inv(uint64_t y, uint64_t k);
 /*****************************************************************************/
 void change_endian(void* data, uint8_t length);
-
-uint64_t camellia_sigma[6]={
+/*
+uint64_t PROGMEM camellia_sigma[6]={ / * 64 byte table * /
        0xA09E667F3BCC908BLL,
        0xB67AE8584CAA73B2LL,
        0xC6EF372FE94F82BELL,
@@ -30,27 +48,45 @@ uint64_t camellia_sigma[6]={
        0x10E527FADE682D1DLL,
        0xB05688C2B3E6C1FDLL
 };     
+*/
+uint32_t PROGMEM camellia_sigma[12]={ /* 64 byte table */
+         0x3BCC908BL, 0xA09E667FL,
+         0x4CAA73B2L, 0xB67AE858L,
+         0xE94F82BEL, 0xC6EF372FL,
+         0xF1D36F1CL, 0x54FF53A5L,
+         0xDE682D1DL, 0x10E527FAL,
+         0xB3E6C1FDL, 0xB05688C2L
+};
+
+/* an ugly macro to load an entry form the table above */
+/*
+#define SIGMA(p) (( ((uint64_t)(pgm_read_dword((prog_uint32_t*)camellia_sigma+2*(p)+1)))<<32) | \
+                    ((uint64_t)(pgm_read_dword((prog_uint32_t*)camellia_sigma+2*(p)+0))) )
+*/
+#define SIGMA(p) (( ((uint64_t)(pgm_read_dword(((prog_uint32_t*)camellia_sigma)[2*(p)+1])))<<32) | \
+                    ((uint64_t)(pgm_read_dword(((prog_uint32_t*)camellia_sigma)[2*(p)+0]))) )
+
+
 
 /*****************************************************************************/
 
 void camellia128_ctx_dump(camellia128_ctx_t *s){
-       uart_putstr("\r\n==State Dump==");
-       uart_putstr("\n\rKAl: "); uart_hexdump(&(s->kal), 8);
-       uart_putstr("\n\rKAr: "); uart_hexdump(&(s->kar), 8);
-       uart_putstr("\n\rKLl: "); uart_hexdump(&(s->kll), 8);
-       uart_putstr("\n\rKLr: "); uart_hexdump(&(s->klr), 8);   
+       uart_putstr_P(PSTR("\r\n==State Dump=="));
+       uart_putstr_P(PSTR("\n\rKAl: ")); uart_hexdump(&(s->kal), 8);
+       uart_putstr_P(PSTR("\n\rKAr: ")); uart_hexdump(&(s->kar), 8);
+       uart_putstr_P(PSTR("\n\rKLl: ")); uart_hexdump(&(s->kll), 8);
+       uart_putstr_P(PSTR("\n\rKLr: ")); uart_hexdump(&(s->klr), 8);   
        return;
 }
 
 /*****************************************************************************/
-//*
-//extern prog_uint64_t camellia_sigma[6];
+/* extern prog_uint64_t camellia_sigma[6]; */
 
 void camellia128_init(camellia128_ctx_t* s, uint8_t* key){
        uint8_t i;
-       s->kll = 0; //((uint64_t*)key)[0];
+       s->kll = 0; /* ((uint64_t*)key)[0]; */
        
-//     / * load the key, endian-adjusted, to kll,klr * /
+       /* load the key, endian-adjusted, to kll,klr */
        for(i=0; i<8; ++i){
                s->kll <<= 8;
                s->kll |= *key++;
@@ -59,22 +95,20 @@ void camellia128_init(camellia128_ctx_t* s, uint8_t* key){
                s->klr <<= 8;
                s->klr |= *key++;
        }
-       
+
        s->kal = s->kll;
        s->kar = s->klr;
        
-       s->kar ^= camellia_f(s->kal, camellia_sigma[0]);
-       s->kal ^= camellia_f(s->kar, camellia_sigma[1]);
+       s->kar ^= camellia_f(s->kal, SIGMA(0));
+       s->kal ^= camellia_f(s->kar, SIGMA(1));
        
        s->kal ^= s->kll;
        s->kar ^= s->klr;
        
-       s->kar ^= camellia_f(s->kal, camellia_sigma[2]);
-       s->kal ^= camellia_f(s->kar, camellia_sigma[3]);
-//     / ** /
-//     uart_putstr("\n\r----------------init finished--------------------");
+       s->kar ^= camellia_f(s->kal, SIGMA(2));
+       s->kal ^= camellia_f(s->kar, SIGMA(3));
 }
-//*/
+
 /*****************************************************************************/
 void camellia128_keyop(camellia128_ctx_t* s, int8_t q);
 /*****************************************************************************/
@@ -143,6 +177,7 @@ void camellia128_enc(camellia128_ctx_t* s, void* block){
        BR = BL;
        BL = temp64;
 
+       camellia128_keyop(s,1);
        
        change_endian(&BL, 64/8);       
        change_endian(&BR, 64/8);