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bd20f8f4 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
39864b0b 11#include "common.h"
7fe9b0b7 12
13//-----------------------------------------------------------------------------
14// Routines to compute the CRCs (two different flavours, just for confusion)
15// required for ISO 14443, swiped directly from the spec.
16//-----------------------------------------------------------------------------
17#define CRC_14443_A 0x6363 /* ITU-V.41 */
18#define CRC_14443_B 0xFFFF /* ISO/IEC 13239 (formerly ISO/IEC 3309) */
cee5a30d 19#define CRC_ICLASS 0xE012 /* ICLASS PRERFIX */
7fe9b0b7 20
21void ComputeCrc14443(int CrcType,
39864b0b 22 const unsigned char *Data, int Length,
7fe9b0b7 23 unsigned char *TransmitFirst,
24 unsigned char *TransmitSecond);
39864b0b 25int CheckCrc14443(int CrcType, const unsigned char *Data, int Length);
7fe9b0b7 26
27#endif
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