Metadata-Version: 2.1
Name: crccheck
Version: 1.3.0
Summary: Calculation library for CRCs and checksums
Home-page: https://github.com/MartinScharrer/crccheck
Author: Martin Scharrer
Author-email: martin.scharrer@web.de
License: MIT
Classifier: Development Status :: 5 - Production/Stable
Classifier: License :: OSI Approved :: MIT License
Classifier: Intended Audience :: Developers
Classifier: Intended Audience :: Information Technology
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3.3
Classifier: Programming Language :: Python :: 3.4
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Topic :: Scientific/Engineering
Classifier: Topic :: Software Development :: Embedded Systems
Classifier: Topic :: Utilities
Description-Content-Type: text/x-rst
License-File: LICENSE.txt

crccheck - Classes to calculate CRCs and checksums from binary data
===================================================================


The ``crccheck.crc`` module implements all CRCs listed in the
`Catalogue of parametrised CRC algorithms <http://reveng.sourceforge.net/crc-catalogue/>`_:

    CRC-3/GSM, CRC-3/ROHC, CRC-4/G-704, CRC-4/INTERLAKEN, CRC-5/EPC-C1G2, CRC-5/G-704, CRC-5/USB, CRC-6/CDMA2000-A,
    CRC-6/CDMA2000-B, CRC-6/DARC, CRC-6/G-704, CRC-6/GSM, CRC-7/MMC, CRC-7/ROHC, CRC-7/UMTS, CRC-8/AUTOSAR,
    CRC-8/BLUETOOTH, CRC-8/CDMA2000, CRC-8/DARC, CRC-8/DVB-S2, CRC-8/GSM-A, CRC-8/GSM-B, CRC-8/HITAG, CRC-8/I-432-1, 
    CRC-8/I-CODE, CRC-8/LTE, CRC-8/MAXIM-DOW, CRC-8/MIFARE-MAD, CRC-8/NRSC-5, CRC-8/OPENSAFETY, CRC-8/ROHC, 
    CRC-8/SAE-J1850, CRC-8/SMBUS, CRC-8/TECH-3250, CRC-8/WCDMA, CRC-10/ATM, CRC-10/CDMA2000, CRC-10/GSM, CRC-11/FLEXRAY, 
    CRC-11/UMTS, CRC-12/CDMA2000, CRC-12/DECT, CRC-12/GSM, CRC-12/UMTS, CRC-13/BBC, CRC-14/DARC, CRC-14/GSM, CRC-15/CAN,
    CRC-15/MPT1327, CRC-16/ARC, CRC-16/CDMA2000, CRC-16/CMS, CRC-16/DDS-110, CRC-16/DECT-R, CRC-16/DECT-X, CRC-16/DNP,
    CRC-16/EN-13757, CRC-16/GENIBUS, CRC-16/GSM, CRC-16/IBM-3740, CRC-16/IBM-SDLC, CRC-16/ISO-IEC-14443-3-A,
    CRC-16/KERMIT, CRC-16/LJ1200, CRC-16/M17, CRC-16/MAXIM-DOW, CRC-16/MCRF4XX, CRC-16/MODBUS, CRC-16/NRSC-5, 
    CRC-16/OPENSAFETY-A, CRC-16/OPENSAFETY-B, CRC-16/PROFIBUS, CRC-16/RIELLO, CRC-16/SPI-FUJITSU, CRC-16/T10-DIF,
    CRC-16/TELEDISK, CRC-16/TMS37157, CRC-16/UMTS, CRC-16/USB, CRC-16/XMODEM, CRC-17/CAN-FD, CRC-21/CAN-FD, CRC-24/BLE,
    CRC-24/FLEXRAY-A, CRC-24/FLEXRAY-B, CRC-24/INTERLAKEN, CRC-24/LTE-A, CRC-24/LTE-B, CRC-24/OPENPGP, CRC-24/OS-9,
    CRC-30/CDMA, CRC-31/PHILIPS, CRC-32/AIXM, CRC-32/AUTOSAR, CRC-32/BASE91-D, CRC-32/BZIP2, CRC-32/CD-ROM-EDC,
    CRC-32/CKSUM, CRC-32/ISCSI, CRC-32/ISO-HDLC, CRC-32/JAMCRC, CRC-32/MEF, CRC-32/MPEG-2, CRC-32/XFER, CRC-40/GSM,
    CRC-64/ECMA-182, CRC-64/GO-ISO, CRC-64/MS, CRC-64/REDIS, CRC-64/WE, CRC-64/XZ, CRC-82/DARC

For the class names simply remove all dashes and slashes from the above names and apply CamelCase, e.g.
"CRC-32/MPEG-2" is implemented by ``Crc32Mpeg2``. Other CRC can be calculated by using the general class
``crccheck.crc.Crc`` by providing all required CRC parameters.

The ``crccheck.checksum`` module implements additive and XOR checksums with 8, 16 and 32 bit:
``Checksum8``, ``Checksum16``, ``Checksum32`` and ``ChecksumXor8``, ``ChecksumXor16``, ``ChecksumXor32``

Usage example::

    from crccheck.crc import Crc32, CrcXmodem
    from crccheck.checksum import Checksum32

    # Quick calculation
    data = bytearray.fromhex("DEADBEEF")
    crc = Crc32.calc(data)
    checksum = Checksum32.calc(data)

    # Procsss multiple data buffers
    data1 = b"Binary string"  # or use .encode(..) on normal sring - Python 3 only
    data2 = bytes.fromhex("1234567890")  # Python 3 only, use bytearray for older versions
    data3 = (0x0, 255, 12, 99)  # Iterable which returns ints in byte range (0..255)
    crcinst = CrcXmodem()
    crcinst.process(data1)
    crcinst.process(data2)
    crcinst.process(data3[1:-1])
    crcbytes = crcinst.finalbytes()
    crchex = crcinst.finalhex()
    crcint = crcinst.final()


License:
    MIT License

    Copyright (c) 2015-2022 by Martin Scharrer <martin.scharrer@web.de>

    Permission is hereby granted, free of charge, to any person obtaining a copy of this software
    and associated documentation files (the "Software"), to deal in the Software without
    restriction, including without limitation the rights to use, copy, modify, merge, publish,
    distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
    Software is furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in all copies or
    substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
    BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
    DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
