mirror of
https://github.com/RfidResearchGroup/proxmark3.git
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d19754567d
* .h include only the strict minimum for their own parsing * this forces all files to include explicitment their needs and not count on far streched dependencies * this helps Makefile to rebuild only the minimum * according to this rule, most standalone .h are now gone * big app.h is gone * remove seldom __cplusplus, if c++ happens, everything will have to be done properly anyway * all unrequired include were removed * split common/ into common/ (client+arm) and common_arm/ (os+bootloader) * bring zlib to common/ * bring stuff not really/not yet used in common back to armsrc/ or client/ * bring liblua into client/ * bring uart into client/ * move some portions of code around (dbprint, protocols,...) * rename unused files into *_disabled.[ch] to make it explicit * rename soft Uarts between 14a, 14b and iclass, so a standalone could use several without clash * remove PrintAndLogDevice * move deprecated-hid-flasher from client to tools * Makefiles * treat deps in armsrc/ as in client/ * client: stop on warning (-Werror), same as for armsrc/ Tested on: * all standalone modes * Linux
70 lines
2.3 KiB
C
70 lines
2.3 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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// CRC16
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//-----------------------------------------------------------------------------
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#ifndef __CRC16_H
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#define __CRC16_H
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#include "common.h"
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#define CRC16_POLY_CCITT 0x1021
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#define CRC16_POLY_LEGIC 0xc6c6 //0x6363
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#define CRC16_POLY_DNP 0x3d65
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#define X25_CRC_CHECK ((uint16_t)(~0xF0B8 & 0xFFFF)) // use this for checking of a correct crc
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typedef enum {
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CRC_NONE,
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CRC_14443_A,
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CRC_14443_B,
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CRC_15693,
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CRC_ICLASS,
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CRC_FELICA,
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CRC_LEGIC,
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CRC_CCITT,
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CRC_KERMIT,
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CRC_XMODEM,
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} CrcType_t;
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uint16_t update_crc16_ex(uint16_t crc, uint8_t c, uint16_t polynomial);
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uint16_t update_crc16(uint16_t crc, uint8_t c);
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uint16_t Crc16(uint8_t const *d, size_t length, uint16_t remainder, uint16_t polynomial, bool refin, bool refout);
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uint16_t Crc16ex(CrcType_t ct, const uint8_t *d, size_t n);
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void compute_crc(CrcType_t ct, const uint8_t *d, size_t n, uint8_t *first, uint8_t *second);
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bool check_crc(CrcType_t ct, const uint8_t *d, size_t n);
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// Calculate CRC-16/CCITT-FALSE
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uint16_t crc16_ccitt(uint8_t const *d, size_t n);
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// Calculate CRC-16/KERMIT (FDX-B ISO11784/85) LF
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uint16_t crc16_kermit(uint8_t const *d, size_t n);
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// Calculate CRC-16/XMODEM (FeliCa)
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uint16_t crc16_xmodem(uint8_t const *d, size_t n);
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// Calculate CRC-16/X25 (ISO15693, ISO14443 CRC-B,ISO/IEC 13239)
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uint16_t crc16_x25(uint8_t const *d, size_t n);
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// Calculate CRC-16/CRC-A (ISO14443 CRC-A)
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uint16_t crc16_a(uint8_t const *d, size_t n);
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// Calculate CRC-16/iCLASS
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uint16_t crc16_iclass(uint8_t const *d, size_t n);
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// Calculate CRC-16/Legic
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// the initial_value is based on the previous legic_Crc8 of the UID.
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// ie: uidcrc = 0x78 then initial_value == 0x7878
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uint16_t crc16_legic(uint8_t const *d, size_t n, uint8_t uidcrc);
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// table implementation
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void init_table(CrcType_t crctype);
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void reset_table(void);
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void generate_table(uint16_t polynomial, bool refin);
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uint16_t crc16_fast(uint8_t const *d, size_t n, uint16_t initval, bool refin, bool refout);
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#endif
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