Checksums¶
Checksum consists of htf.checksum.CRC
.
CRC¶
htf.checksum.CRC
allows users to easily calculate crc checksums
over data.
-
class
htf.checksum.
CRC
(width, polynomial, reflect_input, initial_value, reflect_output, xor_output)¶ A configurable CRC calculator.
The CRC constructor.
- Parameters
Example¶
This example calculates a CRC-16 over "123456789"
.
from __future__ import \
absolute_import, division, print_function, unicode_literals
from htf.checksum import CRC
crc16 = CRC(width=16,
polynomial=0x8005,
reflect_input=True,
initial_value=0,
reflect_output=True,
xor_output=0)
result = crc16.calculate(b"123456789")
assert result == 0xBB3D