def getPublicKey(transaction, signature):
s = Signature(signature_bytes=bytes.fromhex(signature))
txID = hashlib.sha256(bytes.fromhex(transaction)).digest()
keys = KeyAPI('eth_keys.backends.NativeECCBackend')
public_key = keys.ecdsa_recover(txID, s)
logger.debug(' PublicKey: {}'.format(public_key))
return public_key
from eth_keys import KeyAPI, keys
from eth_utils import keccak
enc = 'utf8'
message = "2017年の骨学的分析とDNA検査によって女性であることが判明している"
pk = keys.PrivateKey(b'\01' * 32)
addr = str(pk.public_key.to_checksum_address())
msg_bytes = message.encode(enc)
msg_length = str(len(msg_bytes)).encode(enc)
msg = b'\x19Ethereum Signed Message:\n' + msg_length + msg_bytes
signature = pk.sign_msg(msg).to_hex()
print(message)
print(addr)
print(signature)
print('\nChecking Stage:')
key_obj = KeyAPI()
if '0x' in signature:
signature = signature[2:]
sign = KeyAPI.Signature(bytearray.fromhex(signature))
pub = key_obj.ecdsa_recover(message_hash=keccak(msg), signature=sign)
print(addr == str(pub.to_checksum_address()))
