From 4d19a3429efc3bf2cb4430a7b68cafdd754b17cf Mon Sep 17 00:00:00 2001 From: bg Date: Wed, 1 Nov 2006 03:32:15 +0000 Subject: [PATCH] +skipjack --- Makefile | 5 +- config.h | 2 +- main-skipjack-test.c | 80 ++++++++++++++++++++++ skipjack.c | 158 +++++++++++++++++++++++++++++++++++++++++++ skipjack.h | 19 ++++++ 5 files changed, 261 insertions(+), 3 deletions(-) create mode 100644 main-skipjack-test.c create mode 100644 skipjack.c create mode 100644 skipjack.h diff --git a/Makefile b/Makefile index 1dbe4e8..43a45c7 100644 --- a/Makefile +++ b/Makefile @@ -1,6 +1,7 @@ -PRG = sha1 +PRG = skipjack # cryptotest -OBJ = main-sha1-test.o debug.o uart.o serial-tools.o sha1-asm.o +OBJ = main-skipjack-test.o debug.o uart.o serial-tools.o skipjack.o +# main-sha1-test.o debug.o uart.o serial-tools.o sha1-asm.o # main-md5-test.o debug.o uart.o serial-tools.o md5.o # main-cast5-test.o debug.o uart.o serial-tools.o cast5.o # main.o debug.o uart.o serial-tools.o sha256-asm.o xtea-asm.o arcfour-asm.o prng.o cast5.o diff --git a/config.h b/config.h index a416ef0..f7013d3 100644 --- a/config.h +++ b/config.h @@ -2,7 +2,7 @@ #define __CONFIG_H__ #include -#define F_CPU 8000000 // Oszillator-Frequenz in Hz +#define F_CPU 16000000 // Oszillator-Frequenz in Hz #define DEBUG uart diff --git a/main-skipjack-test.c b/main-skipjack-test.c new file mode 100644 index 0000000..9b71a56 --- /dev/null +++ b/main-skipjack-test.c @@ -0,0 +1,80 @@ +/* + * skipjack test-suit + * +*/ + +#include "config.h" +#include "serial-tools.h" +#include "uart.h" +#include "debug.h" + +#include "skipjack.h" + +#include +#include + + +/***************************************************************************** + * additional validation-functions * + *****************************************************************************/ + +/***************************************************************************** + * self tests * + *****************************************************************************/ + +void testencrypt(uint8_t* block, uint8_t* key){ + uart_putstr("\r\n==testy-encrypt==\r\n key: "); + uart_hexdump(key,10); + uart_putstr("\r\n plain: "); + uart_hexdump(block,8); + skipjack_enc(block,key); + uart_putstr("\r\n crypt: "); + uart_hexdump(block,8); +} + +void testdecrypt(uint8_t* block, uint8_t* key){ + uart_putstr("\r\n==testy-decrypt==\r\n key: "); + uart_hexdump(key,10); + uart_putstr("\r\n crypt: "); + uart_hexdump(block,8); + skipjack_dec(block,key); + uart_putstr("\r\n plain: "); + uart_hexdump(block,8); +} + +void testrun_skipjack(void){ + uint8_t key[]={ 0x00, 0x99, 0x88, 0x77, 0x66, + 0x55, 0x44, 0x33, 0x22, 0x11}; + uint8_t data[]={ 0x33, 0x22, 0x11, 0x00, 0xdd, 0xcc, 0xbb, 0xaa}; + testencrypt(data,key); + testdecrypt(data,key); +} + + + +/***************************************************************************** + * main * + *****************************************************************************/ + +int main (void){ + char str[20]; + + DEBUG_INIT(); + uart_putstr("\r\n"); + + uart_putstr("\r\n\r\nCrypto-VS (skipjack)\r\nloaded and running\r\n"); + +restart: + while(1){ + if (!getnextwordn(str,20)) {DEBUG_S("DBG: W1\r\n"); goto error;} + if (strcmp(str, "test")) {DEBUG_S("DBG: 1b\r\n"); goto error;} + testrun_skipjack(); + goto restart; + continue; + error: + uart_putstr("ERROR\r\n"); + } + + +} + diff --git a/skipjack.c b/skipjack.c new file mode 100644 index 0000000..36792d7 --- /dev/null +++ b/skipjack.c @@ -0,0 +1,158 @@ +/** + * + * + * + * + * + * + */ + + +#include +#include +#include + +/*****************************************************************************/ + +uint8_t skipjack_ftable[] PROGMEM ={ + 0xa3, 0xd7, 0x09, 0x83, 0xf8, 0x48, 0xf6, 0xf4, + 0xb3, 0x21, 0x15, 0x78, 0x99, 0xb1, 0xaf, 0xf9, + 0xe7, 0x2d, 0x4d, 0x8a, 0xce, 0x4c, 0xca, 0x2e, + 0x52, 0x95, 0xd9, 0x1e, 0x4e, 0x38, 0x44, 0x28, + 0x0a, 0xdf, 0x02, 0xa0, 0x17, 0xf1, 0x60, 0x68, + 0x12, 0xb7, 0x7a, 0xc3, 0xe9, 0xfa, 0x3d, 0x53, + 0x96, 0x84, 0x6b, 0xba, 0xf2, 0x63, 0x9a, 0x19, + 0x7c, 0xae, 0xe5, 0xf5, 0xf7, 0x16, 0x6a, 0xa2, + 0x39, 0xb6, 0x7b, 0x0f, 0xc1, 0x93, 0x81, 0x1b, + 0xee, 0xb4, 0x1a, 0xea, 0xd0, 0x91, 0x2f, 0xb8, + 0x55, 0xb9, 0xda, 0x85, 0x3f, 0x41, 0xbf, 0xe0, + 0x5a, 0x58, 0x80, 0x5f, 0x66, 0x0b, 0xd8, 0x90, + 0x35, 0xd5, 0xc0, 0xa7, 0x33, 0x06, 0x65, 0x69, + 0x45, 0x00, 0x94, 0x56, 0x6d, 0x98, 0x9b, 0x76, + 0x97, 0xfc, 0xb2, 0xc2, 0xb0, 0xfe, 0xdb, 0x20, + 0xe1, 0xeb, 0xd6, 0xe4, 0xdd, 0x47, 0x4a, 0x1d, + 0x42, 0xed, 0x9e, 0x6e, 0x49, 0x3c, 0xcd, 0x43, + 0x27, 0xd2, 0x07, 0xd4, 0xde, 0xc7, 0x67, 0x18, + 0x89, 0xcb, 0x30, 0x1f, 0x8d, 0xc6, 0x8f, 0xaa, + 0xc8, 0x74, 0xdc, 0xc9, 0x5d, 0x5c, 0x31, 0xa4, + 0x70, 0x88, 0x61, 0x2c, 0x9f, 0x0d, 0x2b, 0x87, + 0x50, 0x82, 0x54, 0x64, 0x26, 0x7d, 0x03, 0x40, + 0x34, 0x4b, 0x1c, 0x73, 0xd1, 0xc4, 0xfd, 0x3b, + 0xcc, 0xfb, 0x7f, 0xab, 0xe6, 0x3e, 0x5b, 0xa5, + 0xad, 0x04, 0x23, 0x9c, 0x14, 0x51, 0x22, 0xf0, + 0x29, 0x79, 0x71, 0x7e, 0xff, 0x8c, 0x0e, 0xe2, + 0x0c, 0xef, 0xbc, 0x72, 0x75, 0x6f, 0x37, 0xa1, + 0xec, 0xd3, 0x8e, 0x62, 0x8b, 0x86, 0x10, 0xe8, + 0x08, 0x77, 0x11, 0xbe, 0x92, 0x4f, 0x24, 0xc5, + 0x32, 0x36, 0x9d, 0xcf, 0xf3, 0xa6, 0xbb, 0xac, + 0x5e, 0x6c, 0xa9, 0x13, 0x57, 0x25, 0xb5, 0xe3, + 0xbd, 0xa8, 0x3a, 0x01, 0x05, 0x59, 0x2a, 0x46 +}; + +/*****************************************************************************/ + +uint16_t skipjack_g(uint16_t g, uint8_t k, uint8_t *key){ + #define G1 (((uint8_t*)&g)[0]) + #define G2 (((uint8_t*)&g)[1]) + /* this could also be rolled up */ + G1 ^= pgm_read_byte_near(&(skipjack_ftable[G2 ^ key[(4*k+0)%10]])); + G2 ^= pgm_read_byte_near(&(skipjack_ftable[G1 ^ key[(4*k+1)%10]])); + G1 ^= pgm_read_byte_near(&(skipjack_ftable[G2 ^ key[(4*k+2)%10]])); + G2 ^= pgm_read_byte_near(&(skipjack_ftable[G1 ^ key[(4*k+3)%10]])); + return g; +} + +/*****************************************************************************/ + +uint16_t skipjack_g_inv(uint16_t g, uint8_t k, uint8_t *key){ +// #define G1 (((uint8_t)&g)[1]) +// #define G2 (((uint8_t)&g)[0]) + /* this could also be rolled up */ + G2 ^= pgm_read_byte_near(&(skipjack_ftable[G1 ^ key[(4*k+3)%10]])); + G1 ^= pgm_read_byte_near(&(skipjack_ftable[G2 ^ key[(4*k+2)%10]])); + G2 ^= pgm_read_byte_near(&(skipjack_ftable[G1 ^ key[(4*k+1)%10]])); + G1 ^= pgm_read_byte_near(&(skipjack_ftable[G2 ^ key[(4*k+0)%10]])); + return g; +} + +/*****************************************************************************/ + +void skipjack_a(uint16_t* w, uint8_t k, uint8_t* key){ + uint16_t t; + + t = w[3]; + w[3] = w[2]; + w[2] = w[1]; + w[1] = skipjack_g(w[0],k-1,key); + w[0] = t ^ w[1] ^ k<<8; +} + +/*****************************************************************************/ + +void skipjack_a_inv(uint16_t* w, uint8_t k, uint8_t* key){ + uint16_t t; + t = w[0] ^ w[1]; + w[0] = skipjack_g_inv(w[1],k-1,key); + w[1] = w[2]; + w[2] = w[3]; + w[3] = t ^ k<<8; +} + +/*****************************************************************************/ + +void skipjack_b(uint16_t* w, uint8_t k, uint8_t* key){ + uint16_t t; + t = w[0]; + w[0] = w[3]; + w[3] = w[2]; + w[2] = t ^ k<<8 ^ w[1]; + w[1] = skipjack_g(t,k-1,key); +} + +/*****************************************************************************/ + +void skipjack_b_inv(uint16_t* w, uint8_t k, uint8_t* key){ + uint16_t t; + t = w[2]; + w[2] = w[3]; + w[3] = w[0]; + w[0] = skipjack_g_inv(w[1],k-1,key); + w[1] = w[0] ^ t ^ k<<8; +} + +/*****************************************************************************/ +/** + * block is 64 bits (=8 bytes) in size, key is 80 bits (=10 bytes) in size. + * + */ +void skipjack_enc(void* block, void* key){ + uint8_t k; + for(k=0; k<32; ++k){ + if(k & 0x08){ + skipjack_b((uint16_t*)block, k+1, key); + } else { + skipjack_a((uint16_t*)block, k+1, key); + } + } +} + +/*****************************************************************************/ +/** + * block is 64 bits (=8 bytes) in size, key is 80 bits (=10 bytes) in size. + * + */ +void skipjack_dec(void* block, void* key){ + int8_t k; + for(k=31; k>=0; --k){ + if(k & 0x08){ + skipjack_b_inv((uint16_t*)block, k+1, key); + } else { + skipjack_a_inv((uint16_t*)block, k+1, key); + } + } +} + + + + + diff --git a/skipjack.h b/skipjack.h new file mode 100644 index 0000000..00e968b --- /dev/null +++ b/skipjack.h @@ -0,0 +1,19 @@ +#ifndef SKIPJACK_H_ +#define SKIPJACK_H_ + +#include + +/*****************************************************************************/ +/** + * block is 64 bits (=8 bytes) in size, key is 80 bits (=10 bytes) in size. + * + */ +void skipjack_enc(void* block, void* key); +/*****************************************************************************/ +/** + * block is 64 bits (=8 bytes) in size, key is 80 bits (=10 bytes) in size. + * + */ +void skipjack_dec(void* block, void* key); + +#endif /*SKIPJACK_H_*/