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google.appengine.api.files.crc32c module
Summary
Implementation of CRC-32C checksumming as in rfc3720 section B.4.
See http://en.wikipedia.org/wiki/Cyclic_redundancy_check for details on CRC-32C.
This code is a manual python translation of c code generated by
pycrc 0.7.1 (http://www.tty1.net/pycrc/). Command line used:
‘./pycrc.py –model=crc-32c –generate c –algorithm=table-driven’
Contents
- google.appengine.api.files.crc32c.crc(data)source
Compute CRC-32C checksum of the data.
Parametersdata – byte array, string or iterable over bytes.
Returns32-bit CRC-32C checksum of data as long.
- google.appengine.api.files.crc32c.crc_finalize(crc)source
Finalize CRC-32C checksum.
This function should be called as last step of crc calculation.
Parameterscrc – 32-bit checksum as long.
Returnsfinalized 32-bit checksum as long
- google.appengine.api.files.crc32c.crc_update(crc, data)source
Update CRC-32C checksum with data.
ParametersReturns32-bit updated CRC-32C as long.
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-06-16 UTC.
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