--- /dev/null
+/* camellia128-stub.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 <avr/io.h>
+#include <avr/pgmspace.h>
+#include "camellia.h"
+#if 0
+ #include "cli.h"
+ #include "debug.h"
+ #include <util/delay.h>
+#endif
+/*****************************************************************************/
+uint64_t camellia_f(uint64_t x, uint64_t k);
+/*****************************************************************************/
+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 PROGMEM camellia_sigma[6]={ / * 64 byte table * /
+ 0xA09E667F3BCC908BLL,
+ 0xB67AE8584CAA73B2LL,
+ 0xC6EF372FE94F82BELL,
+ 0x54FF53A5F1D36F1CLL,
+ 0x10E527FADE682D1DLL,
+ 0xB05688C2B3E6C1FDLL
+};
+*/
+uint32_t PROGMEM camellia_sigma[12]={ /* 48 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){
+ cli_putstr_P(PSTR("\r\n==State Dump=="));
+ cli_putstr_P(PSTR("\n\rKAl: ")); cli_hexdump(&(s->kal), 8);
+ cli_putstr_P(PSTR("\n\rKAr: ")); cli_hexdump(&(s->kar), 8);
+ cli_putstr_P(PSTR("\n\rKLl: ")); cli_hexdump(&(s->kll), 8);
+ cli_putstr_P(PSTR("\n\rKLr: ")); cli_hexdump(&(s->klr), 8);
+ return;
+}
+*/
+/*****************************************************************************/
+/* extern prog_uint64_t camellia_sigma[6]; */
+
+void camellia128_init(const void* key, camellia128_ctx_t* s){
+ uint8_t i;
+ s->kll = 0; /* ((uint64_t*)key)[0]; */
+
+ /* load the key, endian-adjusted, to kll,klr */
+ for(i=0; i<8; ++i){
+ s->kll <<= 8;
+ s->kll |= *((uint8_t*)key);
+ key = (uint8_t*)key+1;
+ }
+ for(i=0; i<8; ++i){
+ s->klr <<= 8;
+ s->klr |= *((uint8_t*)key);
+ key = (uint8_t*)key+1;
+ }
+
+ s->kal = s->kll;
+ s->kar = s->klr;
+
+ 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, SIGMA(2));
+ s->kal ^= camellia_f(s->kar, SIGMA(3));
+}
+
+/*****************************************************************************/
+void camellia128_keyop(camellia128_ctx_t* s, int8_t q);
+/*****************************************************************************/
+void camellia128_keyop_inv(camellia128_ctx_t* s, int8_t q);
+/*****************************************************************************/
+
+#define SEL_KA 1
+#define SEL_KL 0
+
+#define KEY_POSTC1 0x00
+#define KEY_POSTC2 0x01
+#define KEY_INC2 0x02
+
+#define KEY_DIR 0x04
+#define KEY_DIR_NORM 0x00
+#define KEY_DIR_INV 0x04
+
+#define KEY_AMMOUNT 0x08
+#define KEY_ROL17 0x08
+#define KEY_ROL15 0x00
+
+void camellia_6rounds(const camellia128_ctx_t* s, uint64_t* bl, uint64_t* br,
+ uint8_t roundop, uint8_t keychoice);
+/*****************************************************************************/
+
+
+void camellia128_enc(void* block, const camellia128_ctx_t* s){
+
+ #define BL (((uint64_t*)block)[0])
+ #define BR (((uint64_t*)block)[1])
+ /* endian adjustment */
+ /*BL*/
+ /* 1 2 3 4 5 6 7 8
+ * 8 7 6 5 4 3 2 1
+ */
+
+ uint64_t temp64;
+
+ change_endian(&BL, 64/8);
+ change_endian(&BR, 64/8);
+
+ /* Prewhitening */
+ BL ^= s->kll;
+ BR ^= s->klr;
+
+ /* the first 6 */
+ camellia_6rounds(s, &BL, &BR, KEY_ROL15 | KEY_DIR_NORM | KEY_POSTC1 , 0x33);
+ /* FL injection */
+ camellia128_keyop((camellia128_ctx_t*)s, -1);
+ BL = camellia_fl(BL, s->kal);
+ BR = camellia_fl_inv(BR, s->kar);
+ camellia128_keyop((camellia128_ctx_t*)s, -1);
+ /* middle 6 */
+ camellia_6rounds(s, &BL, &BR, KEY_ROL15 | KEY_DIR_NORM | KEY_INC2 , 0x34);
+ /* FL injection */
+ camellia128_keyop((camellia128_ctx_t*)s, 1);
+ BL = camellia_fl(BL, s->kll);
+ BR = camellia_fl_inv(BR, s->klr);
+ camellia128_keyop((camellia128_ctx_t*)s, 1);
+ /* last 6 */
+ camellia_6rounds(s, &BL, &BR, KEY_ROL17 | KEY_DIR_NORM | KEY_POSTC2 , 0x0C);
+ /* Postwhitening */
+ BR ^= s->kal;
+ BL ^= s->kar;
+
+ temp64 = BR;
+ BR = BL;
+ BL = temp64;
+
+ camellia128_keyop((camellia128_ctx_t*)s,1);
+
+ change_endian(&BL, 64/8);
+ change_endian(&BR, 64/8);
+
+ #undef BL
+ #undef BR
+}
+
+/*****************************************************************************/
+
+void camellia128_dec(void* block, const camellia128_ctx_t* s){
+
+ #define BL (((uint64_t*)block)[1])
+ #define BR (((uint64_t*)block)[0])
+ /* endian adjustment */
+ /*BL*/
+ /* 1 2 3 4 5 6 7 8
+ * 8 7 6 5 4 3 2 1
+ */
+
+ uint64_t temp64;
+
+ change_endian(&BL, 64/8);
+ change_endian(&BR, 64/8);
+
+ camellia128_keyop_inv((camellia128_ctx_t*)s, 1);
+ /* Prewhitening */
+ BR ^= s->kal; /* kw3 */
+ BL ^= s->kar; /* kw4 */
+ /* the first 6 */
+ camellia_6rounds(s, &BR, &BL, KEY_ROL17 | KEY_DIR_INV | KEY_POSTC1 , 0x0C);
+ /* FL injection */
+ camellia128_keyop_inv((camellia128_ctx_t*)s, 1);
+ BR = camellia_fl(BR, s->klr);
+ BL = camellia_fl_inv(BL, s->kll);
+ camellia128_keyop_inv((camellia128_ctx_t*)s, 1);
+ /* middle 6 */
+ camellia_6rounds(s, &BR, &BL, KEY_ROL15 | KEY_DIR_INV | KEY_INC2 , 0x0B);
+ /* FL injection */
+ camellia128_keyop_inv((camellia128_ctx_t*)s, -1);
+ BR = camellia_fl(BR, s->kar);
+ BL = camellia_fl_inv(BL, s->kal);
+ camellia128_keyop_inv((camellia128_ctx_t*)s, -1);
+ /* last 6 */
+ camellia_6rounds(s, &BR, &BL, KEY_ROL15 | KEY_DIR_INV | KEY_POSTC2 , 0x33);
+
+ /* Postwhitening */
+ BL ^= s->kll; /* kw1 */
+ BR ^= s->klr; /* kw2 */
+
+ temp64 = BR;
+ BR = BL;
+ BL = temp64;
+
+ change_endian(&BL, 64/8);
+ change_endian(&BR, 64/8);
+
+}
+
+/*****************************************************************************/
+/*****************************************************************************/
+
+
+
+/* EOF */
projects / avr-crypto-lib.git / blobdiff