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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 |
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11 | #include "common.h" |
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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) */ |
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19 | #define CRC_ICLASS 0xE012 /* ICLASS PRERFIX */ |
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20 | |
21 | void ComputeCrc14443(int CrcType, |
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22 | const unsigned char *Data, int Length, |
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23 | unsigned char *TransmitFirst, |
24 | unsigned char *TransmitSecond); |
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25 | int CheckCrc14443(int CrcType, const unsigned char *Data, int Length); |
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26 | |
27 | #endif |