def signTransaction(self, transaction_dict, private_key):
'''
@param private_key in bytes, str, or int.
In Python 2, a bytes, unicode or str object will be interpreted as hexstr
In Python 3, only a str object will be interpreted as hexstr
'''
assert isinstance(transaction_dict, Mapping)
account = self.privateKeyToAccount(private_key)
# sign transaction
(
v,
r,
s,
transaction_hash,
rlp_encoded,
) = sign_transaction_dict(account._key_obj, transaction_dict)
return AttributeDict({
'rawTransaction':
HexBytes(binascii.hexlify(rlp_encoded)),
'hash':
HexBytes(binascii.hexlify(transaction_hash)),
'r':
HexBytes(r),
's':
HexBytes(s),
'v':
v,
})
def test_eth_getTransactionReceipt_mined(self, web3, block_with_txn, mined_txn_hash):
receipt = web3_offline_signing.eth.getTransactionReceipt(mined_txn_hash)
assert is_dict(receipt)
assert receipt['blockNumber'] == block_with_txn['number']
assert receipt['blockHash'] == block_with_txn['hash']
assert receipt['transactionIndex'] == 0
assert receipt['transactionHash'] == HexBytes(mined_txn_hash)
def recoverTransaction(self, serialized_transaction):
txn_bytes = HexBytes(serialized_transaction)
txn = Transaction.from_bytes(txn_bytes)
msg_hash = hash_of_signed_transaction(txn)
if sys.version_info.major < 3:
msg_hash = to_hex(msg_hash)
return self.recover(msg_hash, vrs=vrs_from(txn))
def recover(self, msghash, vrs=None, signature=None):
hash_bytes = HexBytes(msghash)
if vrs is not None:
v, r, s = map(hexstr_if_str(to_int), vrs)
v_standard = to_standard_v(v)
signature_obj = self._keys.Signature(vrs=(v_standard, r, s))
elif signature is not None:
signature_bytes = HexBytes(signature)
signature_bytes_standard = to_standard_signature_bytes(
signature_bytes)
signature_obj = self._keys.Signature(
signature_bytes=signature_bytes_standard)
else:
raise TypeError(
"You must supply the vrs tuple or the signature bytes")
pubkey = signature_obj.recover_public_key_from_msg_hash(hash_bytes)
return pubkey.to_checksum_address()
def privateKeyToAccount(self, private_key):
key_bytes = HexBytes(private_key)
try:
key_obj = self._keys.PrivateKey(key_bytes)
return LocalAccount(key_obj, self)
except ValidationError as original_exception:
raise_from(
ValueError(
"The private key must be exactly 32 bytes long, instead of "
"%d bytes." % len(key_bytes)), original_exception)
def to_hexbytes(num_bytes, val):
if isinstance(val, str):
result = HexBytes(val)
elif isinstance(val, bytes):
if len(val) == num_bytes:
result = HexBytes(val)
else:
# some providers return values with hex as bytes, like b'0xEFFF' :(
hexstr = val.decode('utf-8')
if not is_hex(hexstr):
raise ValueError("Cannot convert %r into a %d byte argument" %
(hexstr, num_bytes))
result = HexBytes(hexstr)
else:
raise TypeError("Cannot convert %r to HexBytes" % val)
if len(result) != num_bytes:
raise ValueError("The value %r is %d bytes, but should be %d" %
(result, len(result), num_bytes))
return result
def test_eth_getTransactionReceipt_with_log_entry(self,
web3,
block_with_txn_with_log,
emitter_contract,
txn_hash_with_log):
receipt = web3_offline_signing.eth.getTransactionReceipt(txn_hash_with_log)
assert is_dict(receipt)
assert receipt['blockNumber'] == block_with_txn_with_log['number']
assert receipt['blockHash'] == block_with_txn_with_log['hash']
assert receipt['transactionIndex'] == 0
assert receipt['transactionHash'] == HexBytes(txn_hash_with_log)
assert len(receipt['logs']) == 1
log_entry = receipt['logs'][0]
assert log_entry['blockNumber'] == block_with_txn_with_log['number']
assert log_entry['blockHash'] == block_with_txn_with_log['hash']
assert log_entry['logIndex'] == 0
assert is_same_address(log_entry['address'], emitter_contract.address)
assert log_entry['transactionIndex'] == 0
assert log_entry['transactionHash'] == HexBytes(txn_hash_with_log)
def sign(self,
message=None,
private_key=None,
message_hexstr=None,
message_text=None):
'''
@param private_key in bytes, str, or int.
In Python 2, a bytes, unicode or str object will be interpreted as hexstr
In Python 3, only a str object will be interpreted as hexstr
'''
msg_bytes = to_bytes(message, hexstr=message_hexstr, text=message_text)
msg_hash = self.hashMessage(msg_bytes)
key_bytes = HexBytes(private_key)
key = self._keys.PrivateKey(key_bytes)
(v, r, s, eth_signature_bytes) = sign_message_hash(key, msg_hash)
return AttributeDict({
'message': HexBytes(msg_bytes),
'messageHash': msg_hash,
'r': HexBytes(r),
's': HexBytes(s),
'v': v,
'signature': HexBytes(eth_signature_bytes),
})
def encrypt(private_key, password):
key_bytes = HexBytes(private_key)
password_bytes = text_if_str(to_bytes, password)
assert len(key_bytes) == 32
return create_keyfile_json(key_bytes, password_bytes)
def test_eth_getTransactionByBlockNumberAndIndex(self, web3, block_with_txn, mined_txn_hash):
transaction = web3_offline_signing.eth.getTransactionFromBlock(block_with_txn['number'], 0)
assert is_dict(transaction)
assert transaction['hash'] == HexBytes(mined_txn_hash)
def test_eth_getTransactionByHash(self, web3, mined_txn_hash):
transaction = web3_offline_signing.eth.getTransaction(mined_txn_hash)
assert is_dict(transaction)
assert transaction['hash'] == HexBytes(mined_txn_hash)
def test_eth_sendRawTransaction(self, web3, funded_account_for_raw_txn):
txn_hash = web3_offline_signing.eth.sendRawTransaction(
'0xf8648085174876e8008252089439eeed73fb1d3855e90cbd42f348b3d7b340aaa601801ba0ec1295f00936acd0c2cb90ab2cdaacb8bf5e11b3d9957833595aca9ceedb7aada05dfc8937baec0e26029057abd3a1ef8c505dca2cdc07ffacb046d090d2bea06a' # noqa: E501
)
expected = HexBytes('0x1f80f8ab5f12a45be218f76404bda64d37270a6f4f86ededd0eb599f80548c13')
assert txn_hash == expected