in amazon_transcribe/eventstream.py [0:0]
def _validate_checksum(data: bytes, checksum: int, crc=0):
# To generate the same numeric value across all Python versions and
# platforms use crc32(data) & 0xffffffff.
computed_checksum = crc32(data, crc) & 0xFFFFFFFF
if checksum != computed_checksum:
raise ChecksumMismatch(checksum, computed_checksum)