This page uses machine translation from English, which may contain errors or unclear language. For the most accurate information, please see the original English version. Some content may be in the original English due to frequent updates. Help us improve this page's translation by joining our effort on Crowdin. (Crowdin translation page, Contributing guide)

Public Account Key

AccountKeyPublic is used for accounts having one public key. If an account has an AccountKeyPublic object, the transaction validation process is done like below:

Import necessary utils from eth_utils, web3 and eth_account

Import extend from web3py_ext to extend web3 to kaia web3

Define a web3 connection using Web3.HTTPProvider and RPC endpoint

Also, you can change the provider URL from kairos to quicknode

Define a wallet from private key using Account.from_key_pair which is a member key of your multisig account

Define any message to sign

Format the message using encode_defunct to make it compatible with EIP-191 standard.

Sign the transaction with the created account

Print out the signature and its length

Recover sender address with Account.recover_message from signed message

web3_public_value_transfer_message_recover.py


from eth_account import Account
from web3 import Web3
from eth_account.messages import encode_defunct
from eth_utils.curried import to_hex
from web3py_ext import extend
w3 = Web3(Web3.HTTPProvider('https://public-en-kairos.node.kaia.io'))
def web3_public_value_transfer_message_recover():
    user = Account.from_key_pair(
        '0xe15cd70a41dfb05e7214004d7d054801b2a2f06b',
        '0x0e4ca6d38096ad99324de0dde108587e5d7c600165ae4cd6c2462c597458c2b8'
    )
    message = to_hex(text="I♥KLAYTN")
    msghash = encode_defunct(hexstr=message)
    signature = Account.sign_message(msghash, user.key)
    print(signature.signature.hex())
    print(len(signature.signature.hex()))
    recovered = w3.klay.recover_from_message(user.address, message, signature.signature.hex(), "latest")
    print("\nsender", user.address, "\nrecovered", recovered)
web3_public_value_transfer_message_recover()

output


❯ python web3_public_value_transfer_message_recover.py
0x875445e2197ec28e913a1775a40ca8c5a0a9e1806c72e08e01a54caf2b65640d09ff852643df23277c46469ef7f5e84ed96c5553b6ad648a4255a0c5dca58bdc1c
132
sender 0xe15Cd70A41dfb05e7214004d7D054801b2a2f06b
recovered 0xa2a8854b1802d8cd5de631e690817c253d6a9153