EVM自定义消息签名代码

from eth_account import Account
from eth_account.messages import encode_defunct
from web3 import Web3
 
node_url = '节点'  # 替换成实际的节点URL
# 创建Web3连接
w3 = Web3(Web3.HTTPProvider(node_url))
 
def sign_message_with_node(private_key, message):
    # 准备消息
    message_encoded = encode_defunct(text=message)
    # 使用eth_account库直接签名消息
    signed_message = Account.sign_message(message_encoded, private_key)
    return signed_message.signature
 
# 示例使用
if __name__ == "__main__":
    message = "message"
    private_key = '私钥'  # 替换成你的私钥
    # 签名消息
    signature = sign_message_with_node(private_key, message)
    print("Signature:", signature.hex())