X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/fe087813f65b2a08ee814ad78d1164ae7eac6db0..930763e86d35df9e1cdd88b0ab6f034c3428c4a1:/armsrc/des.c?ds=sidebyside diff --git a/armsrc/des.c b/armsrc/des.c deleted file mode 100644 index 9bfd1090..00000000 --- a/armsrc/des.c +++ /dev/null @@ -1,437 +0,0 @@ -/* des.c */ -/* - This file is part of the ARM-Crypto-Lib. - Copyright (C) 2006-2010 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 . -*/ -/** - * \file des.c - * \author Daniel Otte - * \email daniel.otte@rub.de - * \date 2007-06-16 - * \brief DES and EDE-DES implementation - * \license GPLv3 or later - * - */ -#include -#include "string.h" - -const uint8_t sbox[256] = { - /* S-box 1 */ - 0xE4, 0xD1, 0x2F, 0xB8, 0x3A, 0x6C, 0x59, 0x07, - 0x0F, 0x74, 0xE2, 0xD1, 0xA6, 0xCB, 0x95, 0x38, - 0x41, 0xE8, 0xD6, 0x2B, 0xFC, 0x97, 0x3A, 0x50, - 0xFC, 0x82, 0x49, 0x17, 0x5B, 0x3E, 0xA0, 0x6D, - /* S-box 2 */ - 0xF1, 0x8E, 0x6B, 0x34, 0x97, 0x2D, 0xC0, 0x5A, - 0x3D, 0x47, 0xF2, 0x8E, 0xC0, 0x1A, 0x69, 0xB5, - 0x0E, 0x7B, 0xA4, 0xD1, 0x58, 0xC6, 0x93, 0x2F, - 0xD8, 0xA1, 0x3F, 0x42, 0xB6, 0x7C, 0x05, 0xE9, - /* S-box 3 */ - 0xA0, 0x9E, 0x63, 0xF5, 0x1D, 0xC7, 0xB4, 0x28, - 0xD7, 0x09, 0x34, 0x6A, 0x28, 0x5E, 0xCB, 0xF1, - 0xD6, 0x49, 0x8F, 0x30, 0xB1, 0x2C, 0x5A, 0xE7, - 0x1A, 0xD0, 0x69, 0x87, 0x4F, 0xE3, 0xB5, 0x2C, - /* S-box 4 */ - 0x7D, 0xE3, 0x06, 0x9A, 0x12, 0x85, 0xBC, 0x4F, - 0xD8, 0xB5, 0x6F, 0x03, 0x47, 0x2C, 0x1A, 0xE9, - 0xA6, 0x90, 0xCB, 0x7D, 0xF1, 0x3E, 0x52, 0x84, - 0x3F, 0x06, 0xA1, 0xD8, 0x94, 0x5B, 0xC7, 0x2E, - /* S-box 5 */ - 0x2C, 0x41, 0x7A, 0xB6, 0x85, 0x3F, 0xD0, 0xE9, - 0xEB, 0x2C, 0x47, 0xD1, 0x50, 0xFA, 0x39, 0x86, - 0x42, 0x1B, 0xAD, 0x78, 0xF9, 0xC5, 0x63, 0x0E, - 0xB8, 0xC7, 0x1E, 0x2D, 0x6F, 0x09, 0xA4, 0x53, - /* S-box 6 */ - 0xC1, 0xAF, 0x92, 0x68, 0x0D, 0x34, 0xE7, 0x5B, - 0xAF, 0x42, 0x7C, 0x95, 0x61, 0xDE, 0x0B, 0x38, - 0x9E, 0xF5, 0x28, 0xC3, 0x70, 0x4A, 0x1D, 0xB6, - 0x43, 0x2C, 0x95, 0xFA, 0xBE, 0x17, 0x60, 0x8D, - /* S-box 7 */ - 0x4B, 0x2E, 0xF0, 0x8D, 0x3C, 0x97, 0x5A, 0x61, - 0xD0, 0xB7, 0x49, 0x1A, 0xE3, 0x5C, 0x2F, 0x86, - 0x14, 0xBD, 0xC3, 0x7E, 0xAF, 0x68, 0x05, 0x92, - 0x6B, 0xD8, 0x14, 0xA7, 0x95, 0x0F, 0xE2, 0x3C, - /* S-box 8 */ - 0xD2, 0x84, 0x6F, 0xB1, 0xA9, 0x3E, 0x50, 0xC7, - 0x1F, 0xD8, 0xA3, 0x74, 0xC5, 0x6B, 0x0E, 0x92, - 0x7B, 0x41, 0x9C, 0xE2, 0x06, 0xAD, 0xF3, 0x58, - 0x21, 0xE7, 0x4A, 0x8D, 0xFC, 0x90, 0x35, 0x6B -}; - -const uint8_t e_permtab[] ={ - 4, 6, /* 4 bytes in 6 bytes out*/ - 32, 1, 2, 3, 4, 5, - 4, 5, 6, 7, 8, 9, - 8, 9, 10, 11, 12, 13, - 12, 13, 14, 15, 16, 17, - 16, 17, 18, 19, 20, 21, - 20, 21, 22, 23, 24, 25, - 24, 25, 26, 27, 28, 29, - 28, 29, 30, 31, 32, 1 -}; - -const uint8_t p_permtab[] ={ - 4, 4, /* 32 bit -> 32 bit */ - 16, 7, 20, 21, - 29, 12, 28, 17, - 1, 15, 23, 26, - 5, 18, 31, 10, - 2, 8, 24, 14, - 32, 27, 3, 9, - 19, 13, 30, 6, - 22, 11, 4, 25 -}; - -const uint8_t ip_permtab[] ={ - 8, 8, /* 64 bit -> 64 bit */ - 58, 50, 42, 34, 26, 18, 10, 2, - 60, 52, 44, 36, 28, 20, 12, 4, - 62, 54, 46, 38, 30, 22, 14, 6, - 64, 56, 48, 40, 32, 24, 16, 8, - 57, 49, 41, 33, 25, 17, 9, 1, - 59, 51, 43, 35, 27, 19, 11, 3, - 61, 53, 45, 37, 29, 21, 13, 5, - 63, 55, 47, 39, 31, 23, 15, 7 -}; - -const uint8_t inv_ip_permtab[] ={ - 8, 8, /* 64 bit -> 64 bit */ - 40, 8, 48, 16, 56, 24, 64, 32, - 39, 7, 47, 15, 55, 23, 63, 31, - 38, 6, 46, 14, 54, 22, 62, 30, - 37, 5, 45, 13, 53, 21, 61, 29, - 36, 4, 44, 12, 52, 20, 60, 28, - 35, 3, 43, 11, 51, 19, 59, 27, - 34, 2, 42, 10, 50, 18, 58, 26, - 33, 1, 41, 9, 49, 17, 57, 25 -}; - -const uint8_t pc1_permtab[] ={ - 8, 7, /* 64 bit -> 56 bit*/ - 57, 49, 41, 33, 25, 17, 9, - 1, 58, 50, 42, 34, 26, 18, - 10, 2, 59, 51, 43, 35, 27, - 19, 11, 3, 60, 52, 44, 36, - 63, 55, 47, 39, 31, 23, 15, - 7, 62, 54, 46, 38, 30, 22, - 14, 6, 61, 53, 45, 37, 29, - 21, 13, 5, 28, 20, 12, 4 -}; - -const uint8_t pc2_permtab[] ={ - 7, 6, /* 56 bit -> 48 bit */ - 14, 17, 11, 24, 1, 5, - 3, 28, 15, 6, 21, 10, - 23, 19, 12, 4, 26, 8, - 16, 7, 27, 20, 13, 2, - 41, 52, 31, 37, 47, 55, - 30, 40, 51, 45, 33, 48, - 44, 49, 39, 56, 34, 53, - 46, 42, 50, 36, 29, 32 -}; - -const uint8_t splitin6bitword_permtab[] = { - 8, 8, /* 64 bit -> 64 bit */ - 64, 64, 1, 6, 2, 3, 4, 5, - 64, 64, 7, 12, 8, 9, 10, 11, - 64, 64, 13, 18, 14, 15, 16, 17, - 64, 64, 19, 24, 20, 21, 22, 23, - 64, 64, 25, 30, 26, 27, 28, 29, - 64, 64, 31, 36, 32, 33, 34, 35, - 64, 64, 37, 42, 38, 39, 40, 41, - 64, 64, 43, 48, 44, 45, 46, 47 -}; - -const uint8_t shiftkey_permtab[] = { - 7, 7, /* 56 bit -> 56 bit */ - 2, 3, 4, 5, 6, 7, 8, 9, - 10, 11, 12, 13, 14, 15, 16, 17, - 18, 19, 20, 21, 22, 23, 24, 25, - 26, 27, 28, 1, - 30, 31, 32, 33, 34, 35, 36, 37, - 38, 39, 40, 41, 42, 43, 44, 45, - 46, 47, 48, 49, 50, 51, 52, 53, - 54, 55, 56, 29 -}; - -const uint8_t shiftkeyinv_permtab[] = { - 7, 7, - 28, 1, 2, 3, 4, 5, 6, 7, - 8, 9, 10, 11, 12, 13, 14, 15, - 16, 17, 18, 19, 20, 21, 22, 23, - 24, 25, 26, 27, - 56, 29, 30, 31, 32, 33, 34, 35, - 36, 37, 38, 39, 40, 41, 42, 43, - 44, 45, 46, 47, 48, 49, 50, 51, - 52, 53, 54, 55 -}; - -/* -1 0 -1 0 -2 1 -2 1 -2 1 -2 1 -2 1 -2 1 ----- -1 0 -2 1 -2 1 -2 1 -2 1 -2 1 -2 1 -1 0 -*/ -#define ROTTABLE 0x7EFC -#define ROTTABLE_INV 0x3F7E -/******************************************************************************/ - -void permute(const uint8_t *ptable, const uint8_t *in, uint8_t *out){ - uint8_t ob; /* in-bytes and out-bytes */ - uint8_t byte, bit; /* counter for bit and byte */ - ob = ptable[1]; - ptable = &(ptable[2]); - for(byte=0; byte>(x%8)) ){ - t|=0x01; - } - } - out[byte]=t; - } -} - -/******************************************************************************/ - -void changeendian32(uint32_t * a){ - *a = (*a & 0x000000FF) << 24 | - (*a & 0x0000FF00) << 8 | - (*a & 0x00FF0000) >> 8 | - (*a & 0xFF000000) >> 24; -} - -/******************************************************************************/ -static inline -void shiftkey(uint8_t *key){ - uint8_t k[7]; - memcpy(k, key, 7); - permute((uint8_t*)shiftkey_permtab, k, key); -} - -/******************************************************************************/ -static inline -void shiftkey_inv(uint8_t *key){ - uint8_t k[7]; - memcpy(k, key, 7); - permute((uint8_t*)shiftkeyinv_permtab, k, key); - -} - -/******************************************************************************/ -static inline -uint64_t splitin6bitwords(uint64_t a){ - uint64_t ret=0; - a &= 0x0000ffffffffffffLL; - permute((uint8_t*)splitin6bitword_permtab, (uint8_t*)&a, (uint8_t*)&ret); - return ret; -} - -/******************************************************************************/ - -static inline -uint8_t substitute(uint8_t a, uint8_t * sbp){ - uint8_t x; - x = sbp[a>>1]; - x = (a&1)?x&0x0F:x>>4; - return x; - -} - -/******************************************************************************/ - -uint32_t des_f(uint32_t r, uint8_t* kr){ - uint8_t i; - uint32_t t=0,ret; - uint64_t data; - uint8_t *sbp; /* sboxpointer */ - permute((uint8_t*)e_permtab, (uint8_t*)&r, (uint8_t*)&data); - for(i=0; i<6; ++i) - ((uint8_t*)&data)[i] ^= kr[i]; - - /* Sbox substitution */ - data = splitin6bitwords(data); - sbp=(uint8_t*)sbox; - for(i=0; i<8; ++i){ - uint8_t x; - x = substitute(((uint8_t*)&data)[i], sbp); - t<<=4; - t |= x; - sbp += 32; - } - changeendian32(&t); - - permute((uint8_t*)p_permtab,(uint8_t*)&t, (uint8_t*)&ret); - - return ret; -} - -/******************************************************************************/ - -void des_enc(void* out, const void* in, const void* key){ -#define R *((uint32_t*)&(data[4])) -#define L *((uint32_t*)&(data[0])) - - uint8_t data[8],kr[6],k[7]; - uint8_t i; - - permute((uint8_t*)ip_permtab, (uint8_t*)in, data); - permute((uint8_t*)pc1_permtab, (const uint8_t*)key, k); - for(i=0; i<8; ++i){ - shiftkey(k); - if(ROTTABLE&((1<<((i<<1)+0))) ) - shiftkey(k); - permute((uint8_t*)pc2_permtab, k, kr); - L ^= des_f(R, kr); - - shiftkey(k); - if(ROTTABLE&((1<<((i<<1)+1))) ) - shiftkey(k); - permute((uint8_t*)pc2_permtab, k, kr); - R ^= des_f(L, kr); - - } - /* L <-> R*/ - R ^= L; - L ^= R; - R ^= L; - - permute((uint8_t*)inv_ip_permtab, data, (uint8_t*)out); -} - -/******************************************************************************/ - -void des_dec(void* out, const void* in, const uint8_t* key){ -#define R *((uint32_t*)&(data[4])) -#define L *((uint32_t*)&(data[0])) - - uint8_t data[8],kr[6],k[7]; - int8_t i; - permute((uint8_t*)ip_permtab, (uint8_t*)in, data); - permute((uint8_t*)pc1_permtab, (const uint8_t*)key, k); - for(i=7; i>=0; --i){ - - permute((uint8_t*)pc2_permtab, k, kr); - L ^= des_f(R, kr); - shiftkey_inv(k); - if(ROTTABLE&((1<<((i<<1)+1))) ){ - shiftkey_inv(k); - } - - permute((uint8_t*)pc2_permtab, k, kr); - R ^= des_f(L, kr); - shiftkey_inv(k); - if(ROTTABLE&((1<<((i<<1)+0))) ){ - shiftkey_inv(k); - } - - } - /* L <-> R*/ - R ^= L; - L ^= R; - R ^= L; - - permute((uint8_t*)inv_ip_permtab, data, (uint8_t*)out); -} - -/******************************************************************************/ - -void tdes_enc(void* out, void* in, const void* key){ - des_enc(out, in, (uint8_t*)key + 0); - des_dec(out, out, (uint8_t*)key + 8); - des_enc(out, out, (uint8_t*)key +16); -} - -/******************************************************************************/ - -void tdes_dec(void* out, void* in, const uint8_t* key){ - des_dec(out, in, (uint8_t*)key +16); - des_enc(out, out, (uint8_t*)key + 8); - des_dec(out, out, (uint8_t*)key + 0); -} - -void tdes_2key_enc(void* out, const void* in, size_t length, const void* key, unsigned char iv[8]){ - - if( length % 8 ) return; - - uint8_t i; - uint8_t* tin = (uint8_t*) in; - uint8_t* tout = (uint8_t*) out; - - while( length > 0 ) - { - for ( i = 0; i < 8; i++ ) - tout[i] = (unsigned char)(tin[i] ^ iv[i]); - - des_enc(tout, tin, (uint8_t*)key + 0); - des_dec(tout, tout, (uint8_t*)key + 8); - des_enc(tout, tout, (uint8_t*)key + 0); - - memcpy(iv, tout, 8); - - tin += 8; - tout += 8; - length -= 8; - } -} - -void tdes_2key_dec(void* out, const void* in, size_t length, const void* key, unsigned char iv[8]){ - - if( length % 8 ) return; - - uint8_t i; - unsigned char temp[8]; - uint8_t* tin = (uint8_t*) in; - uint8_t* tout = (uint8_t*) out; - - while( length > 0 ) - { - memcpy(temp, tin, 8); - - des_dec(tout, tin, (uint8_t*)key + 0); - des_enc(tout, tout, (uint8_t*)key + 8); - des_dec(tout, tout, (uint8_t*)key + 0); - - for (i = 0; i < 8; i++) - tout[i] = (unsigned char)(tout[i] ^ iv[i]); - - memcpy(iv, temp, 8); - - tin += 8; - tout += 8; - length -= 8; - } -} - - -/******************************************************************************/ - -