python implementation in hardware and software of crc32c

 crc32c is a python package
 implementing the crc32c checksum algorithm.
 It automatically chooses between a hardware-based implementation
 (using the CRC32C SSE 4.2 instruction of Intel CPUs),
 or a software-based one when no hardware support can be found.
 .
 A cyclic redundancy check (CRC) is an error-detecting code
 commonly used in digital networks and storage devices
 to detect accidental changes to raw data.