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: int, polynomial: int, reflect_input: bool, initial_value: int, reflect_output: bool, xor_output: int)
A configurable CRC calculator.
The CRC constructor.
- Parameters:
width – the CRC’s width in bits
polynomial – the CRC’s polynomial
reflect_input – if set to
True
input is reflectedinitial_value – the initial value
reflect_output – if set to
True
output is reflectedxor_output – xor all outputs with
xor_output
Example
This example calculates a CRC-16 over "123456789"
.
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
Changelog
htf-checksum-3.1.4
add requirements for validation purposes
htf-checksum-3.1.3
add build environment data for validation purposes
htf-checksum-3.1.2
htf-checksum
can now be used standalone
htf-checksum-3.1.1
add support for Python 3.12
htf-checksum-3.1.0
add type-hints
use
hlm-3.1
htf-checksum-3.0.1
add support for Python 3.11
htf-checksum-3.0.0
extract
htf-checksum
fromhtf