sign-verify-message

This repos shows the way to sign/verify an ethereum message. It's used for backend of third party where interacts with Tokoin Payment System.

Tokoin Payment System

• Documentation: https://developer.tokoin.io
• Support: https://forum.tokoin.io

How to use

• Sign message

def sign(pk='', types=[], values=[]):
    '''
        - Web3.py only accepts checksum addresses
    '''
    assert (is_hex(pk) is True)
    hash = Web3.soliditySha3(
        types,
        values,
    )
    message = encode_defunct(bytes(hash))
    signed_message = w3.eth.account.sign_message(
        message, private_key=pk)
    return signed_message.signature

• Verify message

def verify(from_address='', types=[], values=[], signature=None):
    assert (is_address(from_address)
            is True and signature is not None)
    hash = Web3.soliditySha3(
        types,
        values,
    )
    message = encode_defunct(bytes(hash))
    return from_address == w3.eth.account.recover_message(message, signature=signature)

How to run sample

• pip3 install virualenv
• virtualenv .venv
• source .venv/bin/activate
• pip3 install -r requirements.txt
• python3 main.py

Demo

• golang (https://github.com/tokoinofficial/go-sign-verify-message)
• python

Created & Maintained By

Trong Dinh