git.zerfleddert.de Git - proxmark3-svn/blob - common/iso14443crc.h

   1 //-----------------------------------------------------------------------------
   2 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   3 // at your option, any later version. See the LICENSE.txt file for the text of
   4 // the license.
   5 //-----------------------------------------------------------------------------
   6 // ISO14443 CRC calculation code.
   7 //-----------------------------------------------------------------------------
   8
   9 #ifndef __ISO14443CRC_H
  10 #define __ISO14443CRC_H
  11
  12 //-----------------------------------------------------------------------------
  13 // Routines to compute the CRCs (two different flavours, just for confusion)
  14 // required for ISO 14443, swiped directly from the spec.
  15 //-----------------------------------------------------------------------------
  16 #define CRC_14443_A     0x6363  /* ITU-V.41 */
  17 #define CRC_14443_B     0xFFFF  /* ISO/IEC 13239 (formerly ISO/IEC 3309) */
  18 #define CRC_ICLASS      0xE012  /* ICLASS PRERFIX */
  19
  20 void ComputeCrc14443(int CrcType,
  21                      unsigned char *Data, int Length,
  22                      unsigned char *TransmitFirst,
  23                      unsigned char *TransmitSecond);
  24
  25 #endif