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avr-crypto-lib
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oops some imortant thigs were commented out

This commit is contained in:
bg 2008-12-11 00:15:23 +00:00
parent e363148c4e
commit 0896c282ff
3 changed files with 25 additions and 35 deletions
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53
seed-stub.c
View File

@ -28,10 +28,29 @@
#include <stdint.h>
#include <avr/pgmspace.h>
#include <string.h>
#include "seed_sbox.h"
#include "uart.h"
#include "debug.h"
/* key constants */
uint32_t seed_kc[16] PROGMEM ={
0xb979379e,
0x73f36e3c,
0xe6e6dd78,
0xcccdbbf1,
0x999b77e3,
0x3337efc6,
0x676ede8d,
0xcfdcbc1b,
0x9eb97937,
0x3c73f36e,
0x78e6e6dd,
0xf1cccdbb,
0xe3999b77,
0xc63337ef,
0x8d676ede,
0x1bcfdcbc
};
static uint64_t f_function(uint64_t a, uint32_t k0, uint32_t k1);
uint32_t g_function(uint32_t x);
@ -83,39 +102,7 @@ uint64_t f_function(uint64_t a, uint32_t k0, uint32_t k1){
return a;
}
/******************************************************************************/
#if 0
#define M0 0xfc
#define M1 0xf3
#define M2 0xcf
#define M3 0x3f
#define X3 (((uint8_t*)(&x))[0])
#define X2 (((uint8_t*)(&x))[1])
#define X1 (((uint8_t*)(&x))[2])
#define X0 (((uint8_t*)(&x))[3])
#define Z3 (((uint8_t*)(&z))[0])
#define Z2 (((uint8_t*)(&z))[1])
#define Z1 (((uint8_t*)(&z))[2])
#define Z0 (((uint8_t*)(&z))[3])
static
uint32_t g_function(uint32_t x){
uint32_t z;
/* sbox substitution */
X3 = pgm_read_byte(&(seed_sbox2[X3]));
X2 = pgm_read_byte(&(seed_sbox1[X2]));
X1 = pgm_read_byte(&(seed_sbox2[X1]));
X0 = pgm_read_byte(&(seed_sbox1[X0]));
/* now the permutation */
Z0 = (X0 & M0) ^ (X1 & M1) ^ (X2 & M2) ^ (X3 & M3);
Z1 = (X0 & M1) ^ (X1 & M2) ^ (X2 & M3) ^ (X3 & M0);
Z2 = (X0 & M2) ^ (X1 & M3) ^ (X2 & M0) ^ (X3 & M1);
Z3 = (X0 & M3) ^ (X1 & M0) ^ (X2 & M1) ^ (X3 & M2);
return z;
}
#endif
/******************************************************************************/
typedef struct {
uint32_t k0, k1;

3
seed_C.c
View File

@ -32,6 +32,9 @@
#include "uart.h"
#include "debug.h"
static
uint32_t g_function(uint32_t x);
/******************************************************************************/
static

4
seed_sbox.h
View File

@ -31,7 +31,7 @@
#include <stdint.h>
#include <avr/pgmspace.h>
/*
uint8_t seed_sbox1[256] PROGMEM ={
169, 133, 214, 211, 84, 29, 172, 37,
93, 67, 24, 30, 81, 252, 202, 99,
@ -101,7 +101,7 @@ uint8_t seed_sbox2[256] PROGMEM ={
55, 231, 36, 164, 203, 83, 10, 135,
217, 76, 131, 143, 206, 59, 74, 183
};
*/
/* key constants */
uint32_t seed_kc[16] PROGMEM ={
0xb979379e,