Created
March 14, 2019 15:59
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Checksum XOR
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# -*- coding: utf-8 -*-byte1 ^ byte2 ^ | |
# xor_final.py | |
# vars | |
checksum = 0 | |
checksum_xor = 0 | |
n = 2 | |
# raw data | |
radio_09010 = '02040d3031000010723320000a100000363303' | |
radio_10232 = '02040d3031000010027f80000fc00000324103' | |
radio_10253 = '02040d30310000100280d01869f00000434203' | |
# decoded | |
radio_data_9010 = radio_09010[2:32] #'040d3031000010027f80000fc00000' | |
radio_data_10232 = radio_10232[2:32] #'040d3031000010027f80000fc00000' | |
radio_data_10253 = radio_10253[2:32] #'040d30310000100280d01869f00000' | |
print('Data (in hex): {}'.format(radio_data_9010)) | |
print('Data (in hex): {}'.format(radio_data_10232)) | |
print('Data (in hex): {}'.format(radio_data_10253)) | |
# checksum | |
data_checksum_1 = '3633'.decode('hex') | |
data_checksum_2 = '3241'.decode('hex') | |
data_checksum_3 = '4342'.decode('hex') | |
print('Data Packet Checksum 1: {}'.format(data_checksum_1)) | |
print('Data Packet Checksum 2: {}'.format(data_checksum_2)) | |
print('Data Packet Checksum 3: {}'.format(data_checksum_3)) | |
# break data into bytes | |
bytes1 = [radio_data_9010[i:i+n] for i in range(0, len(radio_data_9010), n)] | |
bytes2 = [radio_data_10232[i:i+n] for i in range(0, len(radio_data_10232), n)] | |
bytes3 = [radio_data_10253[i:i+n] for i in range(0, len(radio_data_10253), n)] | |
for byte in bytes3: | |
checksum_xor ^= int(byte, 16) | |
print(checksum_xor) | |
checksum_xor = '{0:02x}'.format(checksum_xor) | |
checksum_case = checksum_xor.upper() | |
print('Checksum XOR: {}'.format(checksum_case)) | |
print('Valid Checksum: {}'.format(data_checksum_1 == checksum_case)) |
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