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trivium broken :-(

This commit is contained in:
bg 2011-01-22 09:26:26 +00:00
parent 66c915087d
commit 12b222bf43
8 changed files with 142 additions and 44 deletions
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4
mkfiles/trivium.mk
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@ -6,8 +6,8 @@ STREAM_CIPHERS += $(ALGO_NAME)
$(ALGO_NAME)_DIR := trivium/
$(ALGO_NAME)_OBJ := trivium.o
$(ALGO_NAME)_TEST_BIN := main-trivium-test.o $(CLI_STD) \
nessie_stream_test.o nessie_common.o performance_test.o
$(ALGO_NAME)_INCDIR := memxor/ scal/
$(ALGO_NAME)_TEST_BIN := main-trivium-test.o $(CLI_STD) $(SCAL_STD) scal_trivium.o
$(ALGO_NAME)_NESSIE_TEST := "nessie"
$(ALGO_NAME)_PERFORMANCE_TEST := "performance"

4
scal/scal-basic.c
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@ -24,6 +24,8 @@
#include "streamcipher_descriptor.h"
#include "keysize_descriptor.h"
#include "cli.h"
uint8_t scal_cipher_init(const scdesc_t* cipher_descriptor,
const void* key, uint16_t keysize_b,
const void* iv, uint16_t ivsize_b, scgen_ctx_t* ctx){
@ -112,6 +114,8 @@ uint8_t scal_cipher_gen_byte(scgen_ctx_t* ctx){
r |= ((((sc_gen1_fpt)gen_fpt)(ctx->ctx))&(0xff<<(8-blocksize_b)))>>fill;
fill += blocksize_b;
}while(fill<8);
// cli_putstr_P(PSTR("\r\nDBG: "));
// cli_hexdump_byte(r);
return r;
}else{
uint8_t r;

2
scal/scal_arcfour.c
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@ -36,7 +36,7 @@ const uint8_t arcfour_ivsize_desc[] PROGMEM = {
KS_TYPE_TERMINATOR };
const scdesc_t arcfour_desc PROGMEM = {
SCDESC_TYPE_BLOCKCIPHER, /* abstraction layer type designator */
SCDESC_TYPE_STREAMCIPHER, /* abstraction layer type designator */
SC_INIT_TYPE_3|SC_GEN_TYPE_1, /* flags*/
arcfour_str, /* name string pointer */
sizeof(arcfour_ctx_t), /* size of context */

56
scal/scal_trivium.c Normal file
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@ -0,0 +1,56 @@
/* scal_trivium.c */
/*
This file is part of the AVR-Crypto-Lib.
Copyright (C) 2011 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 <stdlib.h>
#include <avr/pgmspace.h>
#include <stdint.h>
#include "streamcipher_descriptor.h"
#include "keysize_descriptor.h"
#include "trivium.h"
const char trivium_str[] PROGMEM = "Trivium";
const uint8_t trivium_keysize_desc[] PROGMEM = {
KS_TYPE_LIST, 1, KS_INT(80),
KS_TYPE_TERMINATOR };
const uint8_t trivium_ivsize_desc[] PROGMEM = {
KS_TYPE_LIST, 2, KS_INT(32), KS_INT(80),
KS_TYPE_TERMINATOR };
const scdesc_t trivium_desc PROGMEM = {
SCDESC_TYPE_STREAMCIPHER, /* abstraction layer type designator */
SC_INIT_TYPE_5|SC_GEN_TYPE_1, /* flags*/
trivium_str, /* name string pointer */
sizeof(trivium_ctx_t), /* size of context */
1, /* blocksize */
{(void_fpt)trivium_init}, /* init function pointer */
{(void_fpt)trivium_enc}, /* key stream generator function pointer */
{(void_fpt)NULL}, /* key stream generator for random access function pointer */
(sc_free_fpt)NULL, /* free function pointer */
trivium_keysize_desc, /* key size descriptor pointer */
trivium_ivsize_desc /* iv size descriptor pointer */
};

27
scal/scal_trivium.h Normal file
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@ -0,0 +1,27 @@
/* scal_trivium.h */
/*
This file is part of the AVR-Crypto-Lib.
Copyright (C) 2011 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/>.
*/
#ifndef SCAL_ARCFOUR_H_
#define SCAL_ARCFOUR_H_
#include "streamcipher_descriptor.h"
extern const scdesc_t trivium_desc;
#endif /* SCAL_ARCFOUR_H_ */

58
test_src/main-trivium-test.c
View File

@ -28,7 +28,8 @@
#include "cli.h"
#include "trivium.h"
#include "nessie_stream_test.h"
#include "scal_trivium.h"
#include "scal-nessie.h"
#include "performance_test.h"
#include <stdlib.h>
@ -40,30 +41,39 @@ char* algo_name = "Trivium";
/*****************************************************************************
* additional validation-functions *
*****************************************************************************/
void trivium_genctx_dummy(uint8_t* key, uint16_t keysize_b, void* ctx){
uint32_t iv=0;
trivium_init(key, 80, &iv, 32, ctx);
}
uint8_t trivium_getbyte_dummy(trivium_ctx_t* ctx){
uint8_t i,ret=0;
for(i=0; i<8; ++i){
ret<<=1;
ret |= trivium_enc(ctx);
}
return ret;
}
void testrun_nessie_trivium(void){
nessie_stream_ctx.outsize_b = 8; /* actually unused */
nessie_stream_ctx.keysize_b = 80; /* this is the one we have refrence vectors for */
nessie_stream_ctx.ivsize_b = 32;
nessie_stream_ctx.name = algo_name;
nessie_stream_ctx.ctx_size_B = sizeof(trivium_ctx_t);
nessie_stream_ctx.cipher_genctx = (nessie_stream_genctx_fpt)trivium_genctx_dummy;
nessie_stream_ctx.cipher_enc = (nessie_stream_genenc_fpt)trivium_getbyte_dummy;
nessie_stream_run();
scal_nessie_run(&trivium_desc);
}
void testrun_trivium(void){
uint8_t key[10];
uint8_t iv[4];
uint8_t buffer[64];
scgen_ctx_t ctx;
memset(key, 0, 10);
memset(iv, 0, 4);
key[0] = 0x80;
scal_cipher_init(&trivium_desc, key, 80, iv, 32, &ctx);
scal_cipher_gen_fillblock(buffer, 64, &ctx);
cli_putstr_P(PSTR("\r\nTest:\r\n Key = "));
cli_hexdump(key, 10);
cli_putstr_P(PSTR("\r\n IV = "));
cli_hexdump(iv, 4);
cli_putstr_P(PSTR("\r\n Cipher = "));
cli_hexdump_block(buffer, 64, 4, 8);
scal_cipher_free(&ctx);
key[0] = 0x00;
key[9] = 0x80;
scal_cipher_init(&trivium_desc, key, 80, iv, 32, &ctx);
scal_cipher_gen_fillblock(buffer, 64, &ctx);
cli_putstr_P(PSTR("\r\nTest:\r\n Key = "));
cli_hexdump(key, 10);
cli_putstr_P(PSTR("\r\n IV = "));
cli_hexdump(iv, 4);
cli_putstr_P(PSTR("\r\n Cipher = "));
cli_hexdump_block(buffer, 64, 4, 8);
scal_cipher_free(&ctx);
}
void testrun_performance_trivium(void){
@ -106,7 +116,7 @@ const char echo_str[] PROGMEM = "echo";
cmdlist_entry_t cmdlist[] PROGMEM = {
{ nessie_str, NULL, testrun_nessie_trivium},
{ test_str, NULL, testrun_nessie_trivium},
{ test_str, NULL, testrun_trivium},
{ performance_str, NULL, testrun_performance_trivium},
{ echo_str, (void*)1, (void_fpt)echo_ctrl},
{ NULL, NULL, NULL}

31
trivium/trivium.c
View File

@ -29,17 +29,18 @@
#include <string.h>
#include "trivium.h"
#define S(i) ((((*ctx)[(i)/8])>>((i)%8))&1)
#define G(i) ((((*ctx)[(i)/8])>>(((i)%8)))&1)
#define S(i,v) ((*ctx)[(i)/8] = ((*ctx)[(i)/8] & ~(1<<((i)%8))) | ((v)<<((i)%8)))
uint8_t trivium_enc(trivium_ctx_t* ctx){
uint8_t t1,t2,t3,z;
t1 = S(65) ^ S(92);
t2 = S(161) ^ S(176);
t3 = S(242) ^ S(287);
t1 = G(65) ^ G(92);
t2 = G(161) ^ G(176);
t3 = G(242) ^ G(287);
z = t1^t2^t3;
t1 ^= (S(90) & S(91)) ^ S(170);
t2 ^= (S(174) & S(175)) ^ S(263);
t3 ^= (S(285) & S(286)) ^ S(68);
t1 ^= (G(90) & G(91)) ^ G(170);
t2 ^= (G(174) & G(175)) ^ G(263);
t3 ^= (G(285) & G(286)) ^ G(68);
/* shift whole state and insert ts later */
uint8_t i,c1=0,c2;
@ -49,18 +50,18 @@ uint8_t trivium_enc(trivium_ctx_t* ctx){
c1=c2;
}
/* insert ts */
(*ctx)[0] = (((*ctx)[0])&0xFE)| t3; /* s0*/
(*ctx)[93/8] = (((*ctx)[93/8])& (~(1<<(93%8)))) | (t1<<(93%8)); /* s93 */
(*ctx)[177/8] = (((*ctx)[177/8])& (~(1<<(177%8)))) | (t2<<(177%8));/* s177 */
S(0, t3);
S(93, t1);
S(177, t2);
return z;
return z?0x080:0x00;
}
#define KEYSIZE_B ((keysize_b+7)/8)
#define IVSIZE_B ((ivsize_b +7)/8)
void trivium_init(const void* key, uint8_t keysize_b,
const void* iv, uint8_t ivsize_b,
void trivium_init(const void* key, uint16_t keysize_b,
const void* iv, uint16_t ivsize_b,
trivium_ctx_t* ctx){
uint16_t i;
uint8_t c1=0,c2;
@ -68,13 +69,13 @@ void trivium_init(const void* key, uint8_t keysize_b,
memset((*ctx)+KEYSIZE_B, 0, 35-KEYSIZE_B);
memcpy((*ctx), key, KEYSIZE_B);
memcpy((*ctx)+12, iv, IVSIZE_B); /* iv0 is at s96, must shift to s93 */
for(i=12+IVSIZE_B; i>10; --i){
c2=(((*ctx)[i])<<5);
(*ctx)[i] = (((*ctx)[i])>>3)|c1;
c1=c2;
}
(*ctx)[35]=0xE0;
(*ctx)[35] |= 0xE0;
for(i=0; i<4*288; ++i){
trivium_enc(ctx);

4
trivium/trivium.h
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@ -22,8 +22,8 @@
typedef uint8_t trivium_ctx_t[36]; /* 288bit */
uint8_t trivium_enc(trivium_ctx_t* ctx);
void trivium_init(const void* key, uint8_t keysize_b,
const void* iv, uint8_t ivsize_b,
void trivium_init(const void* key, uint16_t keysize_b,
const void* iv, uint16_t ivsize_b,
trivium_ctx_t* ctx);
#endif /*TRIVIUM_H_*/