crc校验算法实践PYTHON

Sure, I'd be glad to help with that! The Cyclic Redundancy Check (CRC) algorithm is a widely used error detection technique in digital communication networks. In Python, you can implement it using the built-in 'binascii' module. Here's some sample code to get you started:

import binascii

def crc(data):
crc = 0xFFFF
for i in range(len(data)):
byte = data[i]
crc = crc ^ byte
for j in range(8):
if crc & 0x0001:
crc = (crc >> 1) ^ 0x8408
else:
crc >>= 1
crc = ~crc & 0xFFFF
return crc

# Example usage
data = b'Hello world!'
checksum = crc(data)
print('Checksum:', hex(checksum))

I hope this helps! Let me know if you have any more questions.