cic-contracts/scripts/calculate_eip165.py

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2021-04-28 13:55:53 +02:00
# standard imports
import logging
import sys
# external imports
import sha3
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logging.basicConfig(level=logging.WARNING)
#logging.basicConfig(level=logging.DEBUG)
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logg = logging.getLogger()
if __name__ == '__main__':
f = open(sys.argv[1], 'r')
z = b''
for i in range(32):
z += b'\x00'
while True:
l = f.readline().rstrip()
if l == '':
break
logg.debug('line {}'.format(l))
h = sha3.keccak_256()
h.update(l.encode('utf-8'))
r = h.digest()
z = bytes([a ^ b for a, b in zip(r, z)])
logg.debug('{} -> {}'.format(r.hex(), z.hex()))
f.close()
print(z[:4].hex())