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

1 /*****************************************************************************

2 * WARNING

3 *

4 * THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.

5 *

6 * USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL

7 * PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,

8 * AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.

9 *

10 * THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.

11 *

12 *****************************************************************************

13 *

14 * This file is part of loclass. It is a reconstructon of the cipher engine

15 * used in iClass, and RFID techology.

16 *

17 * The implementation is based on the work performed by

18 * Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and

19 * Milosch Meriac in the paper "Dismantling IClass".

20 *

22 *

23 * This is free software: you can redistribute it and/or modify

24 * it under the terms of the GNU General Public License version 2 as published

25 * by the Free Software Foundation.

26 *

27 * This file is distributed in the hope that it will be useful,

28 * but WITHOUT ANY WARRANTY; without even the implied warranty of

29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

30 * GNU General Public License for more details.

31 *

32 * You should have received a copy of the GNU General Public License

33 * along with loclass. If not, see <http://www.gnu.org/licenses/>.

34 *

35 *

36 *

37 ****************************************************************************/

40 #ifndef CIPHERUTILS_H

41 #define CIPHERUTILS_H

42 #include <stdint.h>

43 #include <stdbool.h>

44 #include <stdlib.h>

46 typedef struct {

47 uint8_t * buffer;

48 uint8_t numbits;

49 uint8_t position;

50 } BitstreamIn;

52 typedef struct {

53 uint8_t * buffer;

54 uint8_t numbits;

55 uint8_t position;

56 }BitstreamOut;

 bool headBit( BitstreamIn *stream);

 bool tailBit( BitstreamIn *stream);

 void pushBit( BitstreamOut *stream, bool bit);

 int bitsLeft( BitstreamIn *stream);

62 #ifndef ON_DEVICE

 int testCipherUtils(void);

64 int testMAC();

65 #endif

 void push6bits( BitstreamOut* stream, uint8_t bits);

 void EncryptDES(bool key[56], bool outBlk[64], bool inBlk[64], int verbose) ;

 void x_num_to_bytes(uint64_t n, size_t len, uint8_t* dest);

 uint64_t x_bytes_to_num(uint8_t* src, size_t len);

 uint8_t reversebytes(uint8_t b);

 void reverse_arraybytes(uint8_t* arr, size_t len);

 void reverse_arraycopy(uint8_t* arr, uint8_t* dest, size_t len);

 void printarr(char * name, uint8_t* arr, int len);

 void printvar(char * name, uint8_t* arr, int len);

 void printarr_human_readable(char * title, uint8_t* arr, int len);

76 #endif // CIPHERUTILS_H