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CHG: refactor CRC16 algos. This is a big change, most likely some parts broke, hard to test it all.

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iceman1001 2018-02-01 15:19:47 +01:00
commit 52d69ed4ee
35 changed files with 512 additions and 674 deletions
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7
common/iso14443crc.h
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@ -13,14 +13,7 @@
//-----------------------------------------------------------------------------
// Routines to compute the CRCs (two different flavours, just for confusion)
// required for ISO 14443, swiped directly from the spec.
//-----------------------------------------------------------------------------
#define CRC_14443_A 0x6363 /* ITU-V.41 */
#define CRC_14443_B 0xFFFF /* ISO/IEC 13239 (formerly ISO/IEC 3309) */
#define CRC_ICLASS 0xE012 /* ICLASS PREFIX */
uint16_t UpdateCrc14443(uint8_t b, uint16_t *crc);
void ComputeCrc14443(uint16_t CrcType, const uint8_t *data, int length,
uint8_t *TransmitFirst, uint8_t *TransmitSecond);
bool CheckCrc14443(uint16_t CrcType, const uint8_t *data, int length);
#endif