22 lines
577 B
Python
22 lines
577 B
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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from grmn import ChkSum
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import sys
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FILE = sys.argv[1]
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csum = ChkSum()
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print("Reading {} ...".format(FILE), end="", flush=True)
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csum.add_from_file(FILE, print_progress=True)
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print(" done.")
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print("Sum of all bytes: {:02x}".format(csum.get_sum()))
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print("Last byte: {:02x}".format(csum.get_last_byte()))
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if csum.is_valid():
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print("☑ CHECKSUM VALID.")
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else:
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print("☒ CHECKSUM INVALID!!! (Or GCD or other type.)")
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expected_cksum = csum.get_expected()
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print("Expected last byte: {:02x}".format(expected_cksum))
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