从Trezor hardware wallet发送签名事务

Question

我一直在尝试编写一个简单的web3.py程序，以便从我的Trezor发送一个事务。我可以在Trezor上对事务进行签名，执行此操作的函数(ethereum.sign_tx())返回事务的V、R和S签名的元组，如下所示：

(42, b"\xa1\xd8blablablax883", b'<\x7f\xd0Eblablabla6\xe7\xe2Fc')

我的问题是，如何将这些签名转换为可以使用Web3.eth.sendRawTransaction()函数发送的序列化形式。完整的代码是：

from trezorlib.client import get_default_client
from trezorlib.tools import parse_path
from trezorlib import ethereum
from web3 import Web3


def main():
    # Use first connected device
    client = get_default_client()
    ropsten = Web3(Web3.HTTPProvider("https://ropsten.infura.io/v3/7xxxxxxxxx23dee70e4aa"))


    # Get the first address of first BIP44 account
    # (should be the same address as shown in wallet.trezor.io)
    bip32_path = parse_path("44'/60'/0'/0/0")
    address = ethereum.get_address(client, bip32_path)
    nonce = ropsten.eth.getTransactionCount(address)
    tx = ethereum.sign_tx(client, bip32_path, nonce, Web3.toWei(1, 'gwei'), 21000, "0x7ccc4a67eB76b5B1C8Efc62672A6884A9B7bFDb7", Web3.toWei(1, 'ether'), chain_id=3)
    #sent = ropsten.eth.sendRawTransaction(tx)


if __name__ == "__main__":
    main()

Answer 1

您可以像trezorctl一样使用rlp.encode

import rlp

gas_price = Web3.toWei(1, 'gwei')
gas_limit = 21000
to_addr = "0x7ccc4a67eB76b5B1C8Efc62672A6884A9B7bFDb7"
amount = Web3.toWei(1, 'ether')
data = b""
rlp_prefix = (nonce, gas_price, gas_limit, to_addr, amount, data)

sent = ropsten.eth.sendRawTransaction(rlp.encode(rlp_prefix + tx))