/* cast5.c */
/*
- This file is part of the Crypto-avr-lib/microcrypt-lib.
+ 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
#undef DEBUG
#ifdef DEBUG
- #include "uart.h"
+ #include "cli.h"
#endif
#include "cast5-sbox.h"
#define S7(x) pgm_read_dword(&s7[(x)])
#define S8(x) pgm_read_dword(&s8[(x)])
-
+static
void cast5_init_A(uint8_t *dest, uint8_t *src, bool bmode){
uint8_t mask = bmode?0x8:0;
- *((uint32_t*)(&dest[0x0])) = *((uint32_t*)(&src[0x0^mask])) ^ S5(src[0xD^mask]) ^ S6(src[0xF^mask]) ^ S7(src[0xC^mask]) ^ S8(src[0xE^mask]) ^ S7(src[0x8^mask]);
- *((uint32_t*)(&dest[0x4])) = *((uint32_t*)(&src[0x8^mask])) ^ S5(dest[0x0]) ^ S6(dest[0x2]) ^ S7(dest[0x1]) ^ S8(dest[0x3]) ^ S8(src[0xA^mask]);
- *((uint32_t*)(&dest[0x8])) = *((uint32_t*)(&src[0xC^mask])) ^ S5(dest[0x7]) ^ S6(dest[0x6]) ^ S7(dest[0x5]) ^ S8(dest[0x4]) ^ S5(src[0x9^mask]);
- *((uint32_t*)(&dest[0xC])) = *((uint32_t*)(&src[0x4^mask])) ^ S5(dest[0xA]) ^ S6(dest[0x9]) ^ S7(dest[0xB]) ^ S8(dest[0x8]) ^ S6(src[0xB^mask]);
+ *((uint32_t*)(&dest[0x0])) = *((uint32_t*)(&src[0x0^mask]))
+ ^ S5(src[0xD^mask]) ^ S6(src[0xF^mask])
+ ^ S7(src[0xC^mask]) ^ S8(src[0xE^mask])
+ ^ S7(src[0x8^mask]);
+ *((uint32_t*)(&dest[0x4])) = *((uint32_t*)(&src[0x8^mask]))
+ ^ S5(dest[0x0]) ^ S6(dest[0x2])
+ ^ S7(dest[0x1]) ^ S8(dest[0x3])
+ ^ S8(src[0xA^mask]);
+ *((uint32_t*)(&dest[0x8])) = *((uint32_t*)(&src[0xC^mask]))
+ ^ S5(dest[0x7]) ^ S6(dest[0x6])
+ ^ S7(dest[0x5]) ^ S8(dest[0x4])
+ ^ S5(src[0x9^mask]);
+ *((uint32_t*)(&dest[0xC])) = *((uint32_t*)(&src[0x4^mask]))
+ ^ S5(dest[0xA])
+ ^ S6(dest[0x9])
+ ^ S7(dest[0xB])
+ ^ S8(dest[0x8])
+ ^ S6(src[0xB^mask]);
}
+static
void cast5_init_M(uint8_t *dest, uint8_t *src, bool nmode, bool xmode){
- uint8_t nmt[] = {0xB, 0xA, 0x9, 0x8, 0xF, 0xE, 0xD, 0xC, 0x3, 0x2, 0x1, 0x0, 0x7, 0x6, 0x5, 0x4}; /* nmode table */
- uint8_t xmt[4][4] = {{0x2, 0x6, 0x9, 0xC}, {0x8, 0xD, 0x3, 0x7}, {0x3, 0x7, 0x8, 0xD}, {0x9, 0xC, 0x2, 0x6}};
+ uint8_t nmt[] = {0xB, 0xA, 0x9, 0x8,
+ 0xF, 0xE, 0xD, 0xC,
+ 0x3, 0x2, 0x1, 0x0,
+ 0x7, 0x6, 0x5, 0x4}; /* nmode table */
+ uint8_t xmt[4][4] = {{0x2, 0x6, 0x9, 0xC},
+ {0x8, 0xD, 0x3, 0x7},
+ {0x3, 0x7, 0x8, 0xD},
+ {0x9, 0xC, 0x2, 0x6}};
#define NMT(x) (src[nmode?nmt[(x)]:(x)])
#define XMT(x) (src[xmt[(xmode<<1) + nmode][(x)]])
*((uint32_t*)(&dest[0x0])) = S5(NMT(0x8)) ^ S6(NMT(0x9)) ^ S7(NMT(0x7)) ^ S8(NMT(0x6)) ^ S5(XMT(0));
#define S7B(x) pgm_read_byte(3+(uint8_t*)(&s7[(x)]))
#define S8B(x) pgm_read_byte(3+(uint8_t*)(&s8[(x)]))
+static
void cast5_init_rM(uint8_t *klo, uint8_t *khi, uint8_t offset, uint8_t *src, bool nmode, bool xmode){
uint8_t nmt[] = {0xB, 0xA, 0x9, 0x8, 0xF, 0xE, 0xD, 0xC, 0x3, 0x2, 0x1, 0x0, 0x7, 0x6, 0x5, 0x4}; /* nmode table */
uint8_t xmt[4][4] = {{0x2, 0x6, 0x9, 0xC}, {0x8, 0xD, 0x3, 0x7}, {0x3, 0x7, 0x8, 0xD}, {0x9, 0xC, 0x2, 0x6}};
klo[offset*2+1] |= t<<4;
h |= t&0x10; h >>=1;
#ifdef DEBUG
- uart_putstr("\r\n\t h="); uart_hexdump(&h,1);
+ cli_putstr("\r\n\t h="); cli_hexdump(&h,1);
#endif
khi[offset>>1] |= h<<((offset&0x1)?4:0);
}
-/**
- * \brief sets up round keys (context) for cast5 en/decryption.
- * @param s Pointer to cast5 context.
- * @param key Pointer to binary key.
- * @param keylength length of keydata in bits.
- */
-void cast5_init(cast5_ctx_t* s, uint8_t* key, uint8_t keylength){
- /* we migth return if the key is valid and if setup was sucessfull */
+
+void cast5_init(const void* key, uint16_t keylength_b, cast5_ctx_t* s){
+ /* we migth return if the key is valid and if setup was successful */
uint32_t x[4], z[4];
#define BPX ((uint8_t*)&(x[0]))
#define BPZ ((uint8_t*)&(z[0]))
- s->shortkey = (keylength<=80);
+ s->shortkey = (keylength_b<=80);
/* littel endian only! */
memset(&(x[0]), 0 ,16); /* set x to zero */
- if(keylength > 128)
- keylength=128;
- memcpy(&(x[0]), key, (keylength+7)/8);
+ if(keylength_b > 128)
+ keylength_b=128;
+ memcpy(&(x[0]), key, (keylength_b+7)/8);
/* todo: merge a and b and compress the whole stuff */
#define IC 1
#define ID 0
-
+static
uint32_t cast5_f1(uint32_t d, uint32_t m, uint8_t r){
uint32_t t;
t = ROTL32((d + m),r);
#ifdef DEBUG
uint32_t ia,ib,ic,id;
- uart_putstr("\r\n f1("); uart_hexdump(&d, 4); uart_putc(',');
- uart_hexdump(&m , 4); uart_putc(','); uart_hexdump(&r, 1);uart_putstr("): I=");
- uart_hexdump(&t, 4);
+ cli_putstr("\r\n f1("); cli_hexdump(&d, 4); cli_putc(',');
+ cli_hexdump(&m , 4); cli_putc(','); cli_hexdump(&r, 1);cli_putstr("): I=");
+ cli_hexdump(&t, 4);
ia = pgm_read_dword(&s1[((uint8_t*)&t)[IA]] );
ib = pgm_read_dword(&s2[((uint8_t*)&t)[IB]] );
ic = pgm_read_dword(&s3[((uint8_t*)&t)[IC]] );
id = pgm_read_dword(&s4[((uint8_t*)&t)[ID]] );
- uart_putstr("\r\n\tIA="); uart_hexdump(&ia, 4);
- uart_putstr("\r\n\tIB="); uart_hexdump(&ib, 4);
- uart_putstr("\r\n\tIC="); uart_hexdump(&ic, 4);
- uart_putstr("\r\n\tID="); uart_hexdump(&id, 4);
+ cli_putstr("\r\n\tIA="); cli_hexdump(&ia, 4);
+ cli_putstr("\r\n\tIB="); cli_hexdump(&ib, 4);
+ cli_putstr("\r\n\tIC="); cli_hexdump(&ic, 4);
+ cli_putstr("\r\n\tID="); cli_hexdump(&id, 4);
return (((ia ^ ib) - ic) + id);
#else
- return (((pgm_read_dword(&s1[((uint8_t*)&t)[IA]] ) ^ pgm_read_dword(&s2[((uint8_t*)&t)[IB]] ))
- - pgm_read_dword(&s3[((uint8_t*)&t)[IC]] )) + pgm_read_dword(&s4[((uint8_t*)&t)[ID]]));
+ return ((( pgm_read_dword(&s1[((uint8_t*)&t)[IA]])
+ ^ pgm_read_dword(&s2[((uint8_t*)&t)[IB]]) )
+ - pgm_read_dword(&s3[((uint8_t*)&t)[IC]]) )
+ + pgm_read_dword(&s4[((uint8_t*)&t)[ID]]) );
#endif
}
-
+static
uint32_t cast5_f2(uint32_t d, uint32_t m, uint8_t r){
uint32_t t;
t = ROTL32((d ^ m),r);
#ifdef DEBUG
uint32_t ia,ib,ic,id;
- uart_putstr("\r\n f2("); uart_hexdump(&d, 4); uart_putc(',');
- uart_hexdump(&m , 4); uart_putc(','); uart_hexdump(&r, 1);uart_putstr("): I=");
- uart_hexdump(&t, 4);
+ cli_putstr("\r\n f2("); cli_hexdump(&d, 4); cli_putc(',');
+ cli_hexdump(&m , 4); cli_putc(','); cli_hexdump(&r, 1);cli_putstr("): I=");
+ cli_hexdump(&t, 4);
ia = pgm_read_dword(&s1[((uint8_t*)&t)[IA]] );
ib = pgm_read_dword(&s2[((uint8_t*)&t)[IB]] );
ic = pgm_read_dword(&s3[((uint8_t*)&t)[IC]] );
id = pgm_read_dword(&s4[((uint8_t*)&t)[ID]] );
- uart_putstr("\r\n\tIA="); uart_hexdump(&ia, 4);
- uart_putstr("\r\n\tIB="); uart_hexdump(&ib, 4);
- uart_putstr("\r\n\tIC="); uart_hexdump(&ic, 4);
- uart_putstr("\r\n\tID="); uart_hexdump(&id, 4);
+ cli_putstr("\r\n\tIA="); cli_hexdump(&ia, 4);
+ cli_putstr("\r\n\tIB="); cli_hexdump(&ib, 4);
+ cli_putstr("\r\n\tIC="); cli_hexdump(&ic, 4);
+ cli_putstr("\r\n\tID="); cli_hexdump(&id, 4);
return (((ia - ib) + ic) ^ id);
#else
- return (((pgm_read_dword(&s1[((uint8_t*)&t)[IA]])
- - pgm_read_dword(&s2[((uint8_t*)&t)[IB]]) )
+ return ((( pgm_read_dword(&s1[((uint8_t*)&t)[IA]])
+ - pgm_read_dword(&s2[((uint8_t*)&t)[IB]]) )
+ pgm_read_dword(&s3[((uint8_t*)&t)[IC]]) )
^ pgm_read_dword(&s4[((uint8_t*)&t)[ID]]) );
#endif
}
+static
uint32_t cast5_f3(uint32_t d, uint32_t m, uint8_t r){
uint32_t t;
t = ROTL32((m - d),r);
#ifdef DEBUG
uint32_t ia,ib,ic,id;
- uart_putstr("\r\n f3("); uart_hexdump(&d, 4); uart_putc(',');
- uart_hexdump(&m , 4); uart_putc(','); uart_hexdump(&r, 1);uart_putstr("): I=");
- uart_hexdump(&t, 4);
+ cli_putstr("\r\n f3("); cli_hexdump(&d, 4); cli_putc(',');
+ cli_hexdump(&m , 4); cli_putc(','); cli_hexdump(&r, 1);cli_putstr("): I=");
+ cli_hexdump(&t, 4);
ia = pgm_read_dword(&s1[((uint8_t*)&t)[IA]] );
ib = pgm_read_dword(&s2[((uint8_t*)&t)[IB]] );
ic = pgm_read_dword(&s3[((uint8_t*)&t)[IC]] );
id = pgm_read_dword(&s4[((uint8_t*)&t)[ID]] );
- uart_putstr("\r\n\tIA="); uart_hexdump(&ia, 4);
- uart_putstr("\r\n\tIB="); uart_hexdump(&ib, 4);
- uart_putstr("\r\n\tIC="); uart_hexdump(&ic, 4);
- uart_putstr("\r\n\tID="); uart_hexdump(&id, 4);
+ cli_putstr("\r\n\tIA="); cli_hexdump(&ia, 4);
+ cli_putstr("\r\n\tIB="); cli_hexdump(&ib, 4);
+ cli_putstr("\r\n\tIC="); cli_hexdump(&ic, 4);
+ cli_putstr("\r\n\tID="); cli_hexdump(&id, 4);
return (((ia + ib) ^ ic) - id);
#else
- return ((pgm_read_dword(&s1[((uint8_t*)&t)[IA]] ) + pgm_read_dword(&s2[((uint8_t*)&t)[IB]] ))
- ^ pgm_read_dword(&s3[((uint8_t*)&t)[IC]] )) - pgm_read_dword(&s4[((uint8_t*)&t)[ID]] );
+ return (( pgm_read_dword(&s1[((uint8_t*)&t)[IA]] )
+ + pgm_read_dword(&s2[((uint8_t*)&t)[IB]] ))
+ ^ pgm_read_dword(&s3[((uint8_t*)&t)[IC]] ))
+ - pgm_read_dword(&s4[((uint8_t*)&t)[ID]] );
#endif
}
-/*************************************************************************/
+/******************************************************************************/
-/**
- * \brief encrypts a datablock with cast5
- * @param s Pointer to cast5 roundkeys (context)
- * @param block Pointer to datablock
- */
-void cast5_enc(cast5_ctx_t *s, void* block){
+void cast5_enc(void* block, const cast5_ctx_t *s){
uint32_t l,r, x, y;
uint8_t i;
cast5_f_t* f[]={cast5_f1,cast5_f2,cast5_f3};
l=((uint32_t*)block)[0];
r=((uint32_t*)block)[1];
-// uart_putstr("\r\n round[-1] = ");
-// uart_hexdump(&r, 4);
+// cli_putstr("\r\n round[-1] = ");
+// cli_hexdump(&r, 4);
for (i=0;i<(s->shortkey?12:16);++i){
x = r;
y = (f[i%3])(CHANGE_ENDIAN32(r), CHANGE_ENDIAN32(s->mask[i]),
(((s->roth[i>>3]) & (1<<(i&0x7)))?0x10:0x00)
+ ( ((s->rotl[i>>1])>>((i&1)?4:0)) & 0x0f) );
r = l ^ CHANGE_ENDIAN32(y);
-// uart_putstr("\r\n round["); DEBUG_B(i); uart_putstr("] = ");
-// uart_hexdump(&r, 4);
+// cli_putstr("\r\n round["); DEBUG_B(i); cli_putstr("] = ");
+// cli_hexdump(&r, 4);
l = x;
}
((uint32_t*)block)[0]=r;
((uint32_t*)block)[1]=l;
}
-/*************************************************************************/
+/******************************************************************************/
-/**
- * \brief decrypts a datablock with cast5
- * @param s Pointer to cast5 roundkeys (context)
- * @param block Pointer to datablock
- */
-void cast5_dec(cast5_ctx_t *s, void* block){
+void cast5_dec(void* block, const cast5_ctx_t *s){
uint32_t l,r, x, y;
int8_t i, rounds;
cast5_f_t* f[]={cast5_f1,cast5_f2,cast5_f3};
}
-/*********************************************************************************************************/
-/*********************************************************************************************************/
-/*********************************************************************************************************/
-
-#if 0
-
-void cast5_old_init(cast5_ctx_t* s, uint8_t* key, uint8_t keylength){
- /* we migth return if the key is valid and if setup was sucessfull */
- uint32_t x[4], z[4], t;
- #define BPX ((uint8_t*)&(x[0]))
- #define BPZ ((uint8_t*)&(z[0]))
- s->shortkey = (keylength<=80);
- /* littel endian only! */
- memset(&(x[0]), 0 ,16); /* set x to zero */
- memcpy(&(x[0]), key, keylength/8);
-
-
- /* todo: merge a and b and compress the whole stuff */
- /***** A *****/
- z[0] = x[0] ^ S_5X(0xD) ^ S_6X(0xF) ^ S_7X(0xC) ^ S_8X(0xE) ^ S_7X(0x8);
- z[1] = x[2] ^ S_5Z(0x0) ^ S_6Z(0x2) ^ S_7Z(0x1) ^ S_8Z(0x3) ^ S_8X(0xA);
- z[2] = x[3] ^ S_5Z(0x7) ^ S_6Z(0x6) ^ S_7Z(0x5) ^ S_8Z(0x4) ^ S_5X(0x9);
- z[3] = x[1] ^ S_5Z(0xA) ^ S_6Z(0x9) ^ S_7Z(0xB) ^ S_8Z(0x8) ^ S_6X(0xB);
- /***** M *****/
- s->mask[0] = S_5Z(0x8) ^ S_6Z(0x9) ^ S_7Z(0x7) ^ S_8Z(0x6) ^ S_5Z(0x2);
- s->mask[1] = S_5Z(0xA) ^ S_6Z(0xB) ^ S_7Z(0x5) ^ S_8Z(0x4) ^ S_6Z(0x6);
- s->mask[2] = S_5Z(0xC) ^ S_6Z(0xD) ^ S_7Z(0x3) ^ S_8Z(0x2) ^ S_7Z(0x9);
- s->mask[3] = S_5Z(0xE) ^ S_6Z(0xF) ^ S_7Z(0x1) ^ S_8Z(0x0) ^ S_8Z(0xC);
- /***** B *****/
- x[0] = z[2] ^ S_5Z(0x5) ^ S_6Z(0x7) ^ S_7Z(0x4) ^ S_8Z(0x6) ^ S_7Z(0x0);
- x[1] = z[0] ^ S_5X(0x0) ^ S_6X(0x2) ^ S_7X(0x1) ^ S_8X(0x3) ^ S_8Z(0x2);
- x[2] = z[1] ^ S_5X(0x7) ^ S_6X(0x6) ^ S_7X(0x5) ^ S_8X(0x4) ^ S_5Z(0x1);
- x[3] = z[3] ^ S_5X(0xA) ^ S_6X(0x9) ^ S_7X(0xB) ^ S_8X(0x8) ^ S_6Z(0x3);
- /***** N *****/
- s->mask[4] = S_5X(0x3) ^ S_6X(0x2) ^ S_7X(0xC) ^ S_8X(0xD) ^ S_5X(0x8);
- s->mask[5] = S_5X(0x1) ^ S_6X(0x0) ^ S_7X(0xE) ^ S_8X(0xF) ^ S_6X(0xD);
- s->mask[6] = S_5X(0x7) ^ S_6X(0x6) ^ S_7X(0x8) ^ S_8X(0x9) ^ S_7X(0x3);
- s->mask[7] = S_5X(0x5) ^ S_6X(0x4) ^ S_7X(0xA) ^ S_8X(0xB) ^ S_8X(0x7);
- /***** A *****/
- z[0] = x[0] ^ S_5X(0xD) ^ S_6X(0xF) ^ S_7X(0xC) ^ S_8X(0xE) ^ S_7X(0x8);
- z[1] = x[2] ^ S_5Z(0x0) ^ S_6Z(0x2) ^ S_7Z(0x1) ^ S_8Z(0x3) ^ S_8X(0xA);
- z[2] = x[3] ^ S_5Z(0x7) ^ S_6Z(0x6) ^ S_7Z(0x5) ^ S_8Z(0x4) ^ S_5X(0x9);
- z[3] = x[1] ^ S_5Z(0xA) ^ S_6Z(0x9) ^ S_7Z(0xB) ^ S_8Z(0x8) ^ S_6X(0xB);
- /***** N' *****/
- s->mask[8] = S_5Z(0x3) ^ S_6Z(0x2) ^ S_7Z(0xC) ^ S_8Z(0xD) ^ S_5Z(0x9);
- s->mask[9] = S_5Z(0x1) ^ S_6Z(0x0) ^ S_7Z(0xE) ^ S_8Z(0xF) ^ S_6Z(0xC);
- s->mask[10] = S_5Z(0x7) ^ S_6Z(0x6) ^ S_7Z(0x8) ^ S_8Z(0x9) ^ S_7Z(0x2);
- s->mask[11] = S_5Z(0x5) ^ S_6Z(0x4) ^ S_7Z(0xA) ^ S_8Z(0xB) ^ S_8Z(0x6);
- /***** B *****/
- x[0] = z[2] ^ S_5Z(0x5) ^ S_6Z(0x7) ^ S_7Z(0x4) ^ S_8Z(0x6) ^ S_7Z(0x0);
- x[1] = z[0] ^ S_5X(0x0) ^ S_6X(0x2) ^ S_7X(0x1) ^ S_8X(0x3) ^ S_8Z(0x2);
- x[2] = z[1] ^ S_5X(0x7) ^ S_6X(0x6) ^ S_7X(0x5) ^ S_8X(0x4) ^ S_5Z(0x1);
- x[3] = z[3] ^ S_5X(0xA) ^ S_6X(0x9) ^ S_7X(0xB) ^ S_8X(0x8) ^ S_6Z(0x3);
- /***** M' *****/
- s->mask[12] = S_5X(0x8) ^ S_6X(0x9) ^ S_7X(0x7) ^ S_8X(0x6) ^ S_5X(0x3);
- s->mask[13] = S_5X(0xA) ^ S_6X(0xB) ^ S_7X(0x5) ^ S_8X(0x4) ^ S_6X(0x7);
- s->mask[14] = S_5X(0xC) ^ S_6X(0xD) ^ S_7X(0x3) ^ S_8X(0x2) ^ S_7X(0x8);
- s->mask[15] = S_5X(0xE) ^ S_6X(0xF) ^ S_7X(0x1) ^ S_8X(0x0) ^ S_8X(0xD);
-
- /* that were the masking keys, now the rotation keys */
- /* set the keys to zero */
- memset(&(s->rotl[0]),0,8);
- s->roth[0]=s->roth[1]=0;
- /***** A *****/
- z[0] = x[0] ^ S_5X(0xD) ^ S_6X(0xF) ^ S_7X(0xC) ^ S_8X(0xE) ^ S_7X(0x8);
- z[1] = x[2] ^ S_5Z(0x0) ^ S_6Z(0x2) ^ S_7Z(0x1) ^ S_8Z(0x3) ^ S_8X(0xA);
- z[2] = x[3] ^ S_5Z(0x7) ^ S_6Z(0x6) ^ S_7Z(0x5) ^ S_8Z(0x4) ^ S_5X(0x9);
- z[3] = x[1] ^ S_5Z(0xA) ^ S_6Z(0x9) ^ S_7Z(0xB) ^ S_8Z(0x8) ^ S_6X(0xB);
- /***** M *****/
- t = S_5Z(0x8) ^ S_6Z(0x9) ^ S_7Z(0x7) ^ S_8Z(0x6) ^ S_5Z(0x2);
- t >>= 24;
- s->rotl[0] |= t & 0x0f;
- s->roth[0] |= (t >> 4) & (1<<0);
- t = S_5Z(0xA) ^ S_6Z(0xB) ^ S_7Z(0x5) ^ S_8Z(0x4) ^ S_6Z(0x6);
- t >>= 24;
- s->rotl[0] |= (t<<4) & 0xf0;
- s->roth[0] |= (t >> 3) & (1<<1);
- t = S_5Z(0xC) ^ S_6Z(0xD) ^ S_7Z(0x3) ^ S_8Z(0x2) ^ S_7Z(0x9);
- t >>= 24;
- s->rotl[1] |= t & 0x0f;
- s->roth[0] |= (t >> 2) & (1<<2);
- t = S_5Z(0xE) ^ S_6Z(0xF) ^ S_7Z(0x1) ^ S_8Z(0x0) ^ S_8Z(0xC);
- t >>= 24;
- s->rotl[1] |= (t<<4) & 0xf0;
- s->roth[0] |= (t >> 1) & (1<<3);
- /***** B *****/
- x[0] = z[2] ^ S_5Z(0x5) ^ S_6Z(0x7) ^ S_7Z(0x4) ^ S_8Z(0x6) ^ S_7Z(0x0);
- x[1] = z[0] ^ S_5X(0x0) ^ S_6X(0x2) ^ S_7X(0x1) ^ S_8X(0x3) ^ S_8Z(0x2);
- x[2] = z[1] ^ S_5X(0x7) ^ S_6X(0x6) ^ S_7X(0x5) ^ S_8X(0x4) ^ S_5Z(0x1);
- x[3] = z[3] ^ S_5X(0xA) ^ S_6X(0x9) ^ S_7X(0xB) ^ S_8X(0x8) ^ S_6Z(0x3);
- /***** N *****/
- t = S_5X(0x3) ^ S_6X(0x2) ^ S_7X(0xC) ^ S_8X(0xD) ^ S_5X(0x8);
- t >>= 24;
- s->rotl[2] |= t & 0x0f;
- s->roth[0] |= t & (1<<4);
- t = S_5X(0x1) ^ S_6X(0x0) ^ S_7X(0xE) ^ S_8X(0xF) ^ S_6X(0xD);
- t >>= 24;
- s->rotl[2] |= (t<<4) & 0xf0;
- s->roth[0] |= (t<<1) & (1<<5);
- t = S_5X(0x7) ^ S_6X(0x6) ^ S_7X(0x8) ^ S_8X(0x9) ^ S_7X(0x3);
- t >>= 24;
- s->rotl[3] |= t & 0x0f;
- s->roth[0] |= (t<<2) & (1<<6);
- t = S_5X(0x5) ^ S_6X(0x4) ^ S_7X(0xA) ^ S_8X(0xB) ^ S_8X(0x7);
- t >>= 24;
- s->rotl[3] |= (t<<4) & 0xf0;
- s->roth[0] |= (t<<3) & (1<<7);
- /***** A *****/
- z[0] = x[0] ^ S_5X(0xD) ^ S_6X(0xF) ^ S_7X(0xC) ^ S_8X(0xE) ^ S_7X(0x8);
- z[1] = x[2] ^ S_5Z(0x0) ^ S_6Z(0x2) ^ S_7Z(0x1) ^ S_8Z(0x3) ^ S_8X(0xA);
- z[2] = x[3] ^ S_5Z(0x7) ^ S_6Z(0x6) ^ S_7Z(0x5) ^ S_8Z(0x4) ^ S_5X(0x9);
- z[3] = x[1] ^ S_5Z(0xA) ^ S_6Z(0x9) ^ S_7Z(0xB) ^ S_8Z(0x8) ^ S_6X(0xB);
- /***** N' *****/
- t = S_5Z(0x3) ^ S_6Z(0x2) ^ S_7Z(0xC) ^ S_8Z(0xD) ^ S_5Z(0x9);
- t >>= 24;
- s->rotl[4] |= t & 0x0f;
- s->roth[1] |= (t>>4) & (1<<0);
- t = S_5Z(0x1) ^ S_6Z(0x0) ^ S_7Z(0xE) ^ S_8Z(0xF) ^ S_6Z(0xC);
- t >>= 24;
- s->rotl[4] |= (t<<4) & 0xf0;
- s->roth[1] |= (t>>3) & (1<<1);
- t = S_5Z(0x7) ^ S_6Z(0x6) ^ S_7Z(0x8) ^ S_8Z(0x9) ^ S_7Z(0x2);
- t >>= 24;
- s->rotl[5] |= t & 0x0f;
- s->roth[1] |= (t>>2) & (1<<2);
- t = S_5Z(0x5) ^ S_6Z(0x4) ^ S_7Z(0xA) ^ S_8Z(0xB) ^ S_8Z(0x6);
- t >>= 24;
- s->rotl[5] |= (t<<4) & 0xf0;
- s->roth[1] |= (t>>1) & (1<<3);
- /***** B *****/
- x[0] = z[2] ^ S_5Z(0x5) ^ S_6Z(0x7) ^ S_7Z(0x4) ^ S_8Z(0x6) ^ S_7Z(0x0);
- x[1] = z[0] ^ S_5X(0x0) ^ S_6X(0x2) ^ S_7X(0x1) ^ S_8X(0x3) ^ S_8Z(0x2);
- x[2] = z[1] ^ S_5X(0x7) ^ S_6X(0x6) ^ S_7X(0x5) ^ S_8X(0x4) ^ S_5Z(0x1);
- x[3] = z[3] ^ S_5X(0xA) ^ S_6X(0x9) ^ S_7X(0xB) ^ S_8X(0x8) ^ S_6Z(0x3);
- /***** M' *****/
- t = S_5X(0x8) ^ S_6X(0x9) ^ S_7X(0x7) ^ S_8X(0x6) ^ S_5X(0x3);
- t >>= 24;
- s->rotl[6] |= t & 0x0f;
- s->roth[1] |= t & (1<<4);
- t = S_5X(0xA) ^ S_6X(0xB) ^ S_7X(0x5) ^ S_8X(0x4) ^ S_6X(0x7);
- t >>= 24;
- s->rotl[6] |= (t<<4) & 0xf0;
- s->roth[1] |= (t<<1) & (1<<5);
- t = S_5X(0xC) ^ S_6X(0xD) ^ S_7X(0x3) ^ S_8X(0x2) ^ S_7X(0x8);
- t >>= 24;
- s->rotl[7] |= t & 0x0f;
- s->roth[1] |= (t<<2) & (1<<6);
- t = S_5X(0xE) ^ S_6X(0xF) ^ S_7X(0x1) ^ S_8X(0x0) ^ S_8X(0xD);
- t >>= 24;
- s->rotl[7] |= (t<<4) & 0xf0;
- s->roth[1] |= (t<<3) & (1<<7);
-
- /* done ;-) */
-}
-
-#endif
+/******************************************************************************/
projects / avr-crypto-lib.git / blobdiff