28 lines
731 B
Python
28 lines
731 B
Python
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# third-party imports
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import sha3
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from hexathon import (
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strip_0x,
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uniform,
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)
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def to_checksum(address_hex):
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address_hex = strip_0x(address_hex)
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address_hex = uniform(address_hex)
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h = sha3.keccak_256()
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h.update(address_hex.encode('utf-8'))
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z = h.digest()
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checksum_address_hex = '0x'
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for (i, c) in enumerate(address_hex):
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if c in '1234567890':
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checksum_address_hex += c
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elif c in 'abcdef':
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if z[int(i / 2)] & (0x80 >> ((i % 2) * 4)) > 1:
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checksum_address_hex += c.upper()
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else:
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checksum_address_hex += c
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return checksum_address_hex
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