+skipjack
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5
Makefile
5
Makefile
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@ -1,6 +1,7 @@
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PRG = sha1
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PRG = skipjack
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# cryptotest
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OBJ = main-sha1-test.o debug.o uart.o serial-tools.o sha1-asm.o
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OBJ = main-skipjack-test.o debug.o uart.o serial-tools.o skipjack.o
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# main-sha1-test.o debug.o uart.o serial-tools.o sha1-asm.o
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# main-md5-test.o debug.o uart.o serial-tools.o md5.o
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# main-cast5-test.o debug.o uart.o serial-tools.o cast5.o
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# main.o debug.o uart.o serial-tools.o sha256-asm.o xtea-asm.o arcfour-asm.o prng.o cast5.o
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2
config.h
2
config.h
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@ -2,7 +2,7 @@
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#define __CONFIG_H__
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#include <avr/io.h>
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#define F_CPU 8000000 // Oszillator-Frequenz in Hz
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#define F_CPU 16000000 // Oszillator-Frequenz in Hz
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#define DEBUG uart
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@ -0,0 +1,80 @@
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/*
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* skipjack test-suit
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*
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*/
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#include "config.h"
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#include "serial-tools.h"
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#include "uart.h"
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#include "debug.h"
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#include "skipjack.h"
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#include <stdint.h>
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#include <string.h>
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/*****************************************************************************
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* additional validation-functions *
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*****************************************************************************/
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/*****************************************************************************
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* self tests *
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*****************************************************************************/
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void testencrypt(uint8_t* block, uint8_t* key){
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uart_putstr("\r\n==testy-encrypt==\r\n key: ");
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uart_hexdump(key,10);
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uart_putstr("\r\n plain: ");
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uart_hexdump(block,8);
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skipjack_enc(block,key);
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uart_putstr("\r\n crypt: ");
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uart_hexdump(block,8);
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}
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void testdecrypt(uint8_t* block, uint8_t* key){
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uart_putstr("\r\n==testy-decrypt==\r\n key: ");
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uart_hexdump(key,10);
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uart_putstr("\r\n crypt: ");
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uart_hexdump(block,8);
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skipjack_dec(block,key);
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uart_putstr("\r\n plain: ");
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uart_hexdump(block,8);
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}
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void testrun_skipjack(void){
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uint8_t key[]={ 0x00, 0x99, 0x88, 0x77, 0x66,
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0x55, 0x44, 0x33, 0x22, 0x11};
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uint8_t data[]={ 0x33, 0x22, 0x11, 0x00, 0xdd, 0xcc, 0xbb, 0xaa};
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testencrypt(data,key);
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testdecrypt(data,key);
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}
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/*****************************************************************************
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* main *
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*****************************************************************************/
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int main (void){
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char str[20];
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DEBUG_INIT();
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uart_putstr("\r\n");
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uart_putstr("\r\n\r\nCrypto-VS (skipjack)\r\nloaded and running\r\n");
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restart:
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while(1){
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if (!getnextwordn(str,20)) {DEBUG_S("DBG: W1\r\n"); goto error;}
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if (strcmp(str, "test")) {DEBUG_S("DBG: 1b\r\n"); goto error;}
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testrun_skipjack();
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goto restart;
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continue;
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error:
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uart_putstr("ERROR\r\n");
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}
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}
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@ -0,0 +1,158 @@
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/**
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*
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*
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*
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*
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*
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*
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*/
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#include <stdint.h>
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#include <avr/io.h>
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#include <avr/pgmspace.h>
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/*****************************************************************************/
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uint8_t skipjack_ftable[] PROGMEM ={
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0xa3, 0xd7, 0x09, 0x83, 0xf8, 0x48, 0xf6, 0xf4,
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0xb3, 0x21, 0x15, 0x78, 0x99, 0xb1, 0xaf, 0xf9,
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0xe7, 0x2d, 0x4d, 0x8a, 0xce, 0x4c, 0xca, 0x2e,
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0x52, 0x95, 0xd9, 0x1e, 0x4e, 0x38, 0x44, 0x28,
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0x0a, 0xdf, 0x02, 0xa0, 0x17, 0xf1, 0x60, 0x68,
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0x12, 0xb7, 0x7a, 0xc3, 0xe9, 0xfa, 0x3d, 0x53,
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0x96, 0x84, 0x6b, 0xba, 0xf2, 0x63, 0x9a, 0x19,
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0x7c, 0xae, 0xe5, 0xf5, 0xf7, 0x16, 0x6a, 0xa2,
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0x39, 0xb6, 0x7b, 0x0f, 0xc1, 0x93, 0x81, 0x1b,
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0xee, 0xb4, 0x1a, 0xea, 0xd0, 0x91, 0x2f, 0xb8,
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0x55, 0xb9, 0xda, 0x85, 0x3f, 0x41, 0xbf, 0xe0,
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0x5a, 0x58, 0x80, 0x5f, 0x66, 0x0b, 0xd8, 0x90,
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0x35, 0xd5, 0xc0, 0xa7, 0x33, 0x06, 0x65, 0x69,
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0x45, 0x00, 0x94, 0x56, 0x6d, 0x98, 0x9b, 0x76,
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0x97, 0xfc, 0xb2, 0xc2, 0xb0, 0xfe, 0xdb, 0x20,
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0xe1, 0xeb, 0xd6, 0xe4, 0xdd, 0x47, 0x4a, 0x1d,
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0x42, 0xed, 0x9e, 0x6e, 0x49, 0x3c, 0xcd, 0x43,
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0x27, 0xd2, 0x07, 0xd4, 0xde, 0xc7, 0x67, 0x18,
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0x89, 0xcb, 0x30, 0x1f, 0x8d, 0xc6, 0x8f, 0xaa,
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0xc8, 0x74, 0xdc, 0xc9, 0x5d, 0x5c, 0x31, 0xa4,
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0x70, 0x88, 0x61, 0x2c, 0x9f, 0x0d, 0x2b, 0x87,
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0x50, 0x82, 0x54, 0x64, 0x26, 0x7d, 0x03, 0x40,
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0x34, 0x4b, 0x1c, 0x73, 0xd1, 0xc4, 0xfd, 0x3b,
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0xcc, 0xfb, 0x7f, 0xab, 0xe6, 0x3e, 0x5b, 0xa5,
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0xad, 0x04, 0x23, 0x9c, 0x14, 0x51, 0x22, 0xf0,
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0x29, 0x79, 0x71, 0x7e, 0xff, 0x8c, 0x0e, 0xe2,
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0x0c, 0xef, 0xbc, 0x72, 0x75, 0x6f, 0x37, 0xa1,
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0xec, 0xd3, 0x8e, 0x62, 0x8b, 0x86, 0x10, 0xe8,
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0x08, 0x77, 0x11, 0xbe, 0x92, 0x4f, 0x24, 0xc5,
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0x32, 0x36, 0x9d, 0xcf, 0xf3, 0xa6, 0xbb, 0xac,
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0x5e, 0x6c, 0xa9, 0x13, 0x57, 0x25, 0xb5, 0xe3,
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0xbd, 0xa8, 0x3a, 0x01, 0x05, 0x59, 0x2a, 0x46
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};
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/*****************************************************************************/
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uint16_t skipjack_g(uint16_t g, uint8_t k, uint8_t *key){
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#define G1 (((uint8_t*)&g)[0])
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#define G2 (((uint8_t*)&g)[1])
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/* this could also be rolled up */
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G1 ^= pgm_read_byte_near(&(skipjack_ftable[G2 ^ key[(4*k+0)%10]]));
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G2 ^= pgm_read_byte_near(&(skipjack_ftable[G1 ^ key[(4*k+1)%10]]));
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G1 ^= pgm_read_byte_near(&(skipjack_ftable[G2 ^ key[(4*k+2)%10]]));
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G2 ^= pgm_read_byte_near(&(skipjack_ftable[G1 ^ key[(4*k+3)%10]]));
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return g;
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}
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/*****************************************************************************/
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uint16_t skipjack_g_inv(uint16_t g, uint8_t k, uint8_t *key){
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// #define G1 (((uint8_t)&g)[1])
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// #define G2 (((uint8_t)&g)[0])
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/* this could also be rolled up */
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G2 ^= pgm_read_byte_near(&(skipjack_ftable[G1 ^ key[(4*k+3)%10]]));
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G1 ^= pgm_read_byte_near(&(skipjack_ftable[G2 ^ key[(4*k+2)%10]]));
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G2 ^= pgm_read_byte_near(&(skipjack_ftable[G1 ^ key[(4*k+1)%10]]));
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G1 ^= pgm_read_byte_near(&(skipjack_ftable[G2 ^ key[(4*k+0)%10]]));
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return g;
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}
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/*****************************************************************************/
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void skipjack_a(uint16_t* w, uint8_t k, uint8_t* key){
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uint16_t t;
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t = w[3];
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w[3] = w[2];
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w[2] = w[1];
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w[1] = skipjack_g(w[0],k-1,key);
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w[0] = t ^ w[1] ^ k<<8;
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}
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/*****************************************************************************/
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void skipjack_a_inv(uint16_t* w, uint8_t k, uint8_t* key){
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uint16_t t;
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t = w[0] ^ w[1];
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w[0] = skipjack_g_inv(w[1],k-1,key);
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w[1] = w[2];
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w[2] = w[3];
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w[3] = t ^ k<<8;
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}
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/*****************************************************************************/
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void skipjack_b(uint16_t* w, uint8_t k, uint8_t* key){
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uint16_t t;
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t = w[0];
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w[0] = w[3];
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w[3] = w[2];
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w[2] = t ^ k<<8 ^ w[1];
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w[1] = skipjack_g(t,k-1,key);
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}
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/*****************************************************************************/
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void skipjack_b_inv(uint16_t* w, uint8_t k, uint8_t* key){
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uint16_t t;
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t = w[2];
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w[2] = w[3];
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w[3] = w[0];
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w[0] = skipjack_g_inv(w[1],k-1,key);
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w[1] = w[0] ^ t ^ k<<8;
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}
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/*****************************************************************************/
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/**
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* block is 64 bits (=8 bytes) in size, key is 80 bits (=10 bytes) in size.
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*
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*/
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void skipjack_enc(void* block, void* key){
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uint8_t k;
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for(k=0; k<32; ++k){
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if(k & 0x08){
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skipjack_b((uint16_t*)block, k+1, key);
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} else {
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skipjack_a((uint16_t*)block, k+1, key);
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}
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}
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}
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/*****************************************************************************/
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/**
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* block is 64 bits (=8 bytes) in size, key is 80 bits (=10 bytes) in size.
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*
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*/
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void skipjack_dec(void* block, void* key){
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int8_t k;
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for(k=31; k>=0; --k){
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if(k & 0x08){
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skipjack_b_inv((uint16_t*)block, k+1, key);
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} else {
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skipjack_a_inv((uint16_t*)block, k+1, key);
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}
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}
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}
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#ifndef SKIPJACK_H_
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#define SKIPJACK_H_
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#include <stdint.h>
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/*****************************************************************************/
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/**
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* block is 64 bits (=8 bytes) in size, key is 80 bits (=10 bytes) in size.
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*
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*/
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void skipjack_enc(void* block, void* key);
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/*****************************************************************************/
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/**
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* block is 64 bits (=8 bytes) in size, key is 80 bits (=10 bytes) in size.
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*
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*/
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void skipjack_dec(void* block, void* key);
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#endif /*SKIPJACK_H_*/
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