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Library crc

To use this library in your code:

import crypto.crc
Cyclic Redundancy Check (CRC).
CRC is an error-detection code.
See https://en.wikipedia.org/wiki/Cyclic_redundancy_check and https://crccalc.com/

Classes

Crc16Arc
CRC-16/ARC checksum state.
Crc16AugCcitt
CRC-16/AUG-CCITT checksum state.
Crc16Buypass
CRC-16/BUYPASS checksum state.
Crc16CcittFalse
CRC-16/CCITT-FALSE checksum state.
Crc16Cdma2000
CRC-16/CDMA2000 checksum state.
Crc16Dds110
CRC-16/DDS-110 checksum state.
Crc16DectR
CRC-16/DECT-R checksum state.
Crc16DectX
CRC-16/DECT-X checksum state.
Crc16Dnp
CRC-16/DNP checksum state.
Crc16En13757
CRC-16/EN-13757 checksum state.
Crc16Genibus
CRC-16/GENIBUS checksum state.
Crc16Kermit
CRC-16/KERMIT checksum state.
Crc16Maxim
CRC-16/MAXIM checksum state.
Crc16Mcrf4xx
CRC-16/MCRF4XX checksum state.
Crc16Modbus
CRC-16/MODBUS checksum state.
Crc16Riello
CRC-16/RIELLO checksum state.
Crc16T10Dif
CRC-16/T10-DIF checksum state.
Crc16Teledisk
CRC-16/TELEDISK checksum state.
Crc16Tms37157
CRC-16/TMS37157 checksum state.
Crc16Usb
CRC-16/USB checksum state.
Crc16X25
CRC-16/X-25 checksum state.
Crc16Xmodem
CRC-16/XMODEM checksum state.
Crc32
CRC-32 checksum state.
Crc32Bzip2
CRC-32/BZIP2 checksum state.
Crc32c
CRC-32C checksum state.
Crc32d
CRC-32D checksum state.
Crc32Jamcrc
CRC-32/JAMCRC checksum state.
Crc32Mpeg2
CRC-32/MPEG-2 checksum state.
Crc32Posix
CRC-32/POSIX checksum state.
Crc32q
CRC-32Q checksum state.
Crc32Xfer
CRC-32/XFER checksum state.
Crc64Xz
CRC-64/XZ checksum state.
Crc8
CRC-8 checksum state.
Crc8Cdma2000
CRC-8/CDMA2000 checksum state.
Crc8Darc
CRC-8/DARC checksum state.
Crc8DvbS2
CRC-8/DVB-S2 checksum state.
Crc8Ebu
CRC-8/EBU checksum state.
Crc8ICode
CRC-8/I-CODE checksum state.
Crc8Itu
CRC-8/ITU checksum state.
Crc8Maxim
CRC-8/MAXIM checksum state.
Crc8Rohc
CRC-8/ROHC checksum state.
Crc8Wcdma
CRC-8/WCDMA checksum state.
CrcA
CRC-A checksum state.

Functions

crc-a data/Data -> int
Computes the CRC-A checksum of the given data.
Returns the checksum as a 16-bit integer.
Note
Crccalc.com lists the initial state of the CRC as 0xC6C6, whereas we use the initial value of 0x6363, the bit reversed value. This value is the one that gives the correct result (matching crccalc.com's check) when run with our code.
crc16-arc data/Data -> int
Computes the CRC-16/ARC checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-aug-ccitt data/Data -> int
Computes the CRC-16/AUG-CCITT checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-buypass data/Data -> int
Computes the CRC-16/BUYPASS checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-ccitt-false data/Data -> int
Computes the CRC-16/CCITT-FALSE checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-cdma2000 data/Data -> int
Computes the CRC-16/CDMA2000 checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-dds110 data/Data -> int
Computes the CRC-16/DDS-110 checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-dect-r data/Data -> int
Computes the CRC-16/DECT-R checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-dect-x data/Data -> int
Computes the CRC-16/DECT-X checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-dnp data/Data -> int
Computes the CRC-16/DNP checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-en13757 data/Data -> int
Computes the CRC-16/EN-13757 checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-genibus data/Data -> int
Computes the CRC-16/GENIBUS checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-kermit data/Data -> int
Computes the CRC-16/KERMIT checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-maxim data/Data -> int
Computes the CRC-16/MAXIM checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-mcrf4xx data/Data -> int
Computes the CRC-16/MCRF4XX checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-modbus data/Data -> int
Computes the CRC-16/MODBUS checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-riello data/Data -> int
Computes the CRC-16/RIELLO checksum of the given data.
Returns the checksum as a 16-bit integer.
Note
Crccalc.com lists the initial state of the CRC as 0xB2AA, whereas we use the initial value of 0x554D, the bit reversed value. This value is the one that gives the correct result (matching crccalc.com's check) when run with our code, and it is also the value given in the specification at https://networkupstools.org/protocols/riello/PSGPSER-0104.pdf
crc16-t10-dif data/Data -> int
Computes the CRC-16/T10-DIF checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-teledisk data/Data -> int
Computes the CRC-16/TELEDISK checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-tms37157 data/Data -> int
Computes the CRC-16/TMS37157 checksum of the given data.
Returns the checksum as a 16-bit integer.
Note
Crccalc.com lists the initial state of the CRC as 0x89EC, whereas we use the initial value of 0x3791, the bit reversed value. This value is the one that gives the correct result (matching crccalc.com's check) when run with our code.
crc16-usb data/Data -> int
Computes the CRC-16/USB checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-x25 data/Data -> int
Computes the CRC-16/X-25 checksum of the given data.
Returns the checksum as a 16-bit integer.
crc16-xmodem data/Data -> int
Computes the CRC-16/XMODEM checksum of the given data.
Returns the checksum as a 16-bit integer.
crc32 data/Data -> int
Computes the CRC-32 checksum of the given data.
Returns the checksum as a 32-bit integer.
crc32-bzip2 data/Data -> int
Computes the CRC-32/BZIP2 checksum of the given data.
Returns the checksum as a 32-bit integer.
crc32-jamcrc data/Data -> int
Computes the CRC-32/JAMCRC checksum of the given data.
Returns the checksum as a 32-bit integer.
crc32-mpeg2 data/Data -> int
Computes the CRC-32/MPEG-2 checksum of the given data.
Returns the checksum as a 32-bit integer.
crc32-posix data/Data -> int
Computes the CRC-32/POSIX checksum of the given data.
Returns the checksum as a 32-bit integer.
crc32-xfer data/Data -> int
Computes the CRC-32/XFER checksum of the given data.
Returns the checksum as a 32-bit integer.
crc32c data/Data -> int
Computes the CRC-32C checksum of the given data.
Returns the checksum as a 32-bit integer.
crc32d data/Data -> int
Computes the CRC-32D checksum of the given data.
Returns the checksum as a 32-bit integer.
crc32q data/Data -> int
Computes the CRC-32Q checksum of the given data.
Returns the checksum as a 32-bit integer.
crc64-xz data/Data -> int
Computes the CRC-64/XZ checksum of the given data.
Returns the checksum as a 32-bit integer.
crc8 data/Data -> int
Computes the CRC-8 checksum of the given data.
Returns the checksum as an 8-bit integer.
crc8-cdma2000 data/Data -> int
Computes the CRC-8/CDMA2000 checksum of the given data.
Returns the checksum as an 8-bit integer.
crc8-darc data/Data -> int
Computes the CRC-8/DARC checksum of the given data.
Returns the checksum as an 8-bit integer.
crc8-dvb-s2 data/Data -> int
Computes the CRC-8/DVB-S2 checksum of the given data.
Returns the checksum as an 8-bit integer.
crc8-ebu data/Data -> int
Computes the CRC-8/EBU checksum of the given data.
Returns the checksum as an 8-bit integer.
crc8-i-code data/Data -> int
Computes the CRC-8/I-CODE checksum of the given data.
Returns the checksum as an 8-bit integer.
crc8-itu data/Data -> int
Computes the CRC-8/ITU checksum of the given data.
Returns the checksum as an 8-bit integer.
crc8-maxim data/Data -> int
Computes the CRC-8/MAXIM checksum of the given data.
Returns the checksum as an 8-bit integer.
crc8-rohc data/Data -> int
Computes the CRC-8/ROHC checksum of the given data.
Returns the checksum as an 8-bit integer.
crc8-wcdma data/Data -> int
Computes the CRC-8/WCDMA checksum of the given data.
Returns the checksum as an 8-bit integer.