git.zerfleddert.de Git - proxmark3-svn/blob - client/loclass/cipherutils.h

   1 /*****************************************************************************
   2  * This file is part of iClassCipher. It is a reconstructon of the cipher engine
   3  * used in iClass, and RFID techology.
   4  *
   5  * The implementation is based on the work performed by
   6  * Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
   7  * Milosch Meriac in the paper "Dismantling IClass".
   8  *
   9  * Copyright (C) 2014 Martin Holst Swende
  10  *
  11  * This is free software: you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as published
  13  * by the Free Software Foundation.
  14  *
  15  * This file is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with IClassCipher.  If not, see <http://www.gnu.org/licenses/>.
  22  ****************************************************************************/
  23
  24 #ifndef CIPHERUTILS_H
  25 #define CIPHERUTILS_H
  26 #include <stdint.h>
  27 #include <stdbool.h>
  28 #include <stdlib.h>
  29
  30 typedef struct {
  31         uint8_t * buffer;
  32         uint8_t numbits;
  33         uint8_t position;
  34 } BitstreamIn;
  35
  36 typedef struct {
  37         uint8_t * buffer;
  38         uint8_t numbits;
  39         uint8_t position;
  40 }BitstreamOut;
  41
  42 bool headBit( BitstreamIn *stream);
  43 bool tailBit( BitstreamIn *stream);
  44 void pushBit( BitstreamOut *stream, bool bit);
  45 int bitsLeft( BitstreamIn *stream);
  46 bool xorbits_8(uint8_t val);
  47 bool xorbits_16(uint16_t val);
  48 int testCipherUtils(void);
  49 int testMAC();
  50 void push6bits( BitstreamOut* stream, uint8_t bits);
  51 void EncryptDES(bool key[56], bool outBlk[64], bool inBlk[64], int verbose) ;
  52 uint8_t reversebytes(uint8_t b);
  53 void reverse_arraybytes(uint8_t* arr, size_t len);
  54
  55 #endif // CIPHERUTILS_H