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tombonner/petya_hash_process_name.py

Created June 29, 2017 14:46
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petya_hash_process_name.py
def petya_hash_process_name(name):
checksum = [0x78, 0x56, 0x34, 0x12]
i = 0
while i < 3:
j = i
for c in name:
checksum[j & 0x3] = abs((ord(c) ^ checksum[j & 0x3]) - 1)
j += 1
i += 1
return int("".join(["{:02x}".format(c) for c in reversed(checksum)]), 16)
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