mirror of
https://github.com/platomav/BIOSUtilities.git
synced 2024-09-19 07:18:53 -04:00
d85a7f82dc
Added AMI PFAT nested detection at each file Added Award BIOS payload naming at each file Switched Panasonic BIOS LZNT1 external library Improved Panasonic LZNT1 detection and length Improved Dell PFS code structure and fixed bugs Improved code exception handling (raise, catch) Improved code definitions (PEP8, docs, types) Fixed some arguments missing from help screens
31 lines
622 B
Python
31 lines
622 B
Python
#!/usr/bin/env python3 -B
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# coding=utf-8
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"""
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Copyright (C) 2022-2024 Plato Mavropoulos
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"""
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# Get Checksum 16-bit
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def get_chk_16(data, value=0, order='little'):
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""" Calculate Checksum-16 of data, controlling IV and Endianess """
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for idx in range(0, len(data), 2):
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# noinspection PyTypeChecker
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value += int.from_bytes(data[idx:idx + 2], byteorder=order)
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value &= 0xFFFF
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return value
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# Get Checksum 8-bit XOR
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def get_chk_8_xor(data, value=0):
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""" Calculate Checksum-8 XOR of data, controlling IV """
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for byte in data:
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value ^= byte
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value ^= 0x0
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return value
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