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27 lines
1.2 KiB
C
27 lines
1.2 KiB
C
//-----------------------------------------------------------------------------
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// This code is licensed to you under the terms of the GNU GPL, version 2 or,
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// at your option, any later version. See the LICENSE.txt file for the text of
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// the license.
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//-----------------------------------------------------------------------------
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// ISO14443 CRC calculation code.
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//-----------------------------------------------------------------------------
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#ifndef __ISO14443CRC_H
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#define __ISO14443CRC_H
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#include "../include/common.h"
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//-----------------------------------------------------------------------------
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// Routines to compute the CRCs (two different flavours, just for confusion)
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// required for ISO 14443, swiped directly from the spec.
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//-----------------------------------------------------------------------------
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#define CRC_14443_A 0x6363 /* ITU-V.41 */
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#define CRC_14443_B 0xFFFF /* ISO/IEC 13239 (formerly ISO/IEC 3309) */
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#define CRC_ICLASS 0xE012 /* ICLASS PRERFIX */
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void ComputeCrc14443(int CrcType,
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const unsigned char *Data, int Length,
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unsigned char *TransmitFirst,
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unsigned char *TransmitSecond);
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int CheckCrc14443(int CrcType, const unsigned char *Data, int Length);
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#endif
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