def test_transacting_power_sign_agent_transaction(testerchain, agency,
test_registry):
token_agent = NucypherTokenAgent(registry=test_registry)
contract_function = token_agent.contract.functions.approve(
testerchain.etherbase_account, 100)
payload = {
'chainId':
int(testerchain.client.chain_id),
'nonce':
testerchain.client.w3.eth.getTransactionCount(
testerchain.etherbase_account),
'from':
testerchain.etherbase_account,
'gasPrice':
testerchain.client.gas_price
}
unsigned_transaction = contract_function.buildTransaction(payload)
# Sign with Transacting Power
transacting_power = TransactingPower(
password=INSECURE_DEVELOPMENT_PASSWORD,
signer=Web3Signer(testerchain.client),
account=testerchain.etherbase_account)
signed_raw_transaction = transacting_power.sign_transaction(
unsigned_transaction)
# Demonstrate that the transaction is valid RLP encoded.
restored_transaction = Transaction.from_bytes(
serialized_bytes=signed_raw_transaction)
restored_dict = restored_transaction.as_dict()
assert to_checksum_address(
restored_dict['to']) == unsigned_transaction['to']
def test_transacting_power_sign_transaction(testerchain):
eth_address = testerchain.unassigned_accounts[2]
power = TransactingPower(password=INSECURE_DEVELOPMENT_PASSWORD,
signer=Web3Signer(testerchain.client),
account=eth_address)
transaction_dict = {
'nonce': testerchain.client.w3.eth.getTransactionCount(eth_address),
'gasPrice': testerchain.client.w3.eth.gasPrice,
'gas': 100000,
'from': eth_address,
'to': testerchain.unassigned_accounts[1],
'value': 1,
'data': b''
}
# Sign
power.activate()
signed_transaction = power.sign_transaction(
transaction_dict=transaction_dict)
# Demonstrate that the transaction is valid RLP encoded.
from eth_account._utils.legacy_transactions import Transaction
restored_transaction = Transaction.from_bytes(
serialized_bytes=signed_transaction)
restored_dict = restored_transaction.as_dict()
assert to_checksum_address(restored_dict['to']) == transaction_dict['to']
# Try signing with missing transaction fields
del transaction_dict['gas']
del transaction_dict['nonce']
with pytest.raises(TypeError):
power.sign_transaction(transaction_dict=transaction_dict)
def recover_transaction(self, serialized_transaction):
"""
Get the address of the account that signed this transaction.
:param serialized_transaction: the complete signed transaction
:type serialized_transaction: hex str, bytes or int
:returns: address of signer, hex-encoded & checksummed
:rtype: str
.. doctest:: python
>>> raw_transaction = '0xf86a8086d55698372431831e848094f0109fc8df283027b6285cc889f5aa624eac1f55843b9aca008025a009ebb6ca057a0535d6186462bc0b465b561c94a295bdb0621fc19208ab149a9ca0440ffd775ce91a833ab410777204d5341a6f9fa91216a6f3ee2c051fea6a0428' # noqa: E501
>>> Account.recover_transaction(raw_transaction)
'0x2c7536E3605D9C16a7a3D7b1898e529396a65c23'
"""
txn_bytes = HexBytes(serialized_transaction)
if len(txn_bytes) > 0 and txn_bytes[0] <= 0x7f:
# We are dealing with a typed transaction.
typed_transaction = TypedTransaction.from_bytes(txn_bytes)
msg_hash = typed_transaction.hash()
vrs = typed_transaction.vrs()
return self._recover_hash(msg_hash, vrs=vrs)
txn = Transaction.from_bytes(txn_bytes)
msg_hash = hash_of_signed_transaction(txn)
return self._recover_hash(msg_hash, vrs=vrs_from(txn))
def test_keystore_sign_transaction(good_signer, mock_account):
transaction_dict = assoc(TRANSACTION_DICT,
'from',
value=mock_account.address)
signed_transaction = good_signer.sign_transaction(
transaction_dict=transaction_dict)
assert isinstance(signed_transaction, HexBytes)
# assert valid transaction
transaction = Transaction.from_bytes(signed_transaction)
assert to_checksum_address(transaction.to) == transaction_dict['to']
def test_character_transacting_power_signing(testerchain, agency,
test_registry):
# Pretend to be a character.
eth_address = testerchain.etherbase_account
signer = Character(is_me=True,
eth_provider_uri=MOCK_ETH_PROVIDER_URI,
registry=test_registry,
checksum_address=eth_address)
# Manually consume the power up
transacting_power = TransactingPower(
password=INSECURE_DEVELOPMENT_PASSWORD,
signer=Web3Signer(testerchain.client),
account=eth_address)
signer._crypto_power.consume_power_up(transacting_power)
# Retrieve the power up
power = signer._crypto_power.power_ups(TransactingPower)
assert power == transacting_power
# Sign Message
data_to_sign = b'Premium Select Luxury Pencil Holder'
signature = power.sign_message(message=data_to_sign)
is_verified = verify_eip_191(address=eth_address,
message=data_to_sign,
signature=signature)
assert is_verified is True
# Sign Transaction
transaction_dict = {
'nonce': testerchain.client.w3.eth.getTransactionCount(eth_address),
'gasPrice': testerchain.client.w3.eth.gasPrice,
'gas': 100000,
'from': eth_address,
'to': testerchain.unassigned_accounts[1],
'value': 1,
'data': b''
}
signed_transaction = power.sign_transaction(
transaction_dict=transaction_dict)
# Demonstrate that the transaction is valid RLP encoded.
restored_transaction = Transaction.from_bytes(
serialized_bytes=signed_transaction)
restored_dict = restored_transaction.as_dict()
assert to_checksum_address(restored_dict['to']) == transaction_dict['to']
def test_trezor_sign_transaction(mock_trezor, mock_account):
trezor_signer = TrezorSigner()
transaction_dict = assoc(TRANSACTION_DICT,
key='from',
value=mock_account.address)
signed_transaction = trezor_signer.sign_transaction(
transaction_dict=transaction_dict)
assert isinstance(signed_transaction, HexBytes)
# assert valid deserializable transaction
transaction = Transaction.from_bytes(signed_transaction)
# Confirm the integrity of the sender and recipient address
failure_message = 'WARNING: transaction "to" field was mutated'
sender_checksum_address = to_checksum_address(transaction.to)
assert sender_checksum_address != mock_account.address, failure_message
assert sender_checksum_address == TRANSACTION_DICT['to'], failure_message
assert sender_checksum_address == transaction_dict['to'] # positive
assert sender_checksum_address != mock_account.address # negative