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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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37
common/crc16.h
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@ -16,47 +16,47 @@
#define CRC16_POLY_LEGIC 0xc6c6 //0x6363
#define CRC16_POLY_DNP 0x3d65
#define X25_CRC_CHECK ((uint16_t)(~0xF0B8 & 0xFFFF)) // use this for checking of a correct crc
typedef enum {
CRC_NONE,
CRC_14A,
CRC_14B,
CRC_15,
CRC_15_ICLASS,
CRC_14443_A,
CRC_14443_B,
CRC_15693,
CRC_ICLASS,
CRC_FELICA,
CRC_LEGIC,
CRC_DNP,
CRC_CCITT,
CRC_KERMIT,
} CrcType_t;
uint16_t update_crc16_ex( uint16_t crc, uint8_t c, uint16_t polynomial );
uint16_t update_crc16(uint16_t crc, uint8_t c);
uint16_t crc16(uint8_t const *message, size_t length, uint16_t remainder, uint16_t polynomial, bool refin, bool refout);
//
uint16_t crc(CrcType_t ct, const uint8_t *d, size_t n);
void compute_crc(CrcType_t ct, const uint8_t *d, size_t n, uint8_t *first, uint8_t *second);
bool check_crc(CrcType_t ct, const uint8_t *d, size_t n);
// Calculate CRC-16/CCITT-FALSE checksum
// Calculate CRC-16/CCITT-FALSE
uint16_t crc16_ccitt(uint8_t const *d, size_t n);
// Calculate CRC-16/KERMIT checksum
// Calculate CRC-16/KERMIT (FDX-B ISO11784/85) LF
uint16_t crc16_kermit(uint8_t const *d, size_t n);
// Calculate CRC-16/XMODEM (FeliCa) checksum
// Calculate CRC-16/XMODEM (FeliCa)
uint16_t crc16_xmodem(uint8_t const *d, size_t n);
// Calculate CRC-16/X25 (ISO15693, ISO14443 CRC-B,ISO/IEC 13239) checksum
// Calculate CRC-16/X25 (ISO15693, ISO14443 CRC-B,ISO/IEC 13239)
uint16_t crc16_x25(uint8_t const *d, size_t n);
// Calculate CRC-16/CRC-A (ISO14443 CRC-A) checksum
// Calculate CRC-16/CRC-A (ISO14443 CRC-A)
uint16_t crc16_a(uint8_t const *d, size_t n);
// Calculate CRC-16/iCLASS checksum
// Calculate CRC-16/iCLASS
uint16_t crc16_iclass(uint8_t const *d, size_t n);
// Calculate CRC-16/DNP checksum
uint16_t crc16_dnp(uint8_t const *d, size_t n);
// Calculate CRC-16/Legic checksum
// Calculate CRC-16/Legic
// the initial_value is based on the previous legic_Crc8 of the UID.
// ie: uidcrc = 0x78 then initial_value == 0x7878
uint16_t crc16_legic(uint8_t const *d, size_t n, uint8_t uidcrc);
@ -67,7 +67,4 @@ void reset_table(void);
void generate_table(uint16_t polynomial, bool refin);
uint16_t crc16_fast(uint8_t const *d, size_t n, uint16_t initval, bool refin, bool refout);
//checks
bool check_crc16_ccitt(uint8_t const *d, size_t n);
#endif
#endif