def encodeConstructorData(cls, arguments=None):
if arguments is None:
arguments = []
constructor = get_constructor_abi(cls.abi)
if constructor:
if constructor['inputs'] and not arguments:
raise ValueError(
"This contract requires {0} constructor arguments".format(
len(constructor['inputs']), ))
if arguments:
if len(arguments) != len(constructor['inputs']):
raise ValueError(
"This contract requires {0} constructor arguments".
format(len(constructor['inputs']), ))
is_encodable = check_if_arguments_can_be_encoded(
constructor,
arguments,
{},
)
if not is_encodable:
raise ValueError("Unable to encode provided arguments.")
deploy_data = add_0x_prefix(
cls._encodeABI(constructor, arguments, data=cls.code))
else:
deploy_data = add_0x_prefix(cls.code)
return deploy_data
def encodeConstructorData(cls, arguments=None):
if arguments is None:
arguments = []
constructor = get_constructor_abi(cls.abi)
if constructor:
if constructor['inputs'] and not arguments:
raise ValueError(
"This contract requires {0} constructor arguments".format(
len(constructor['inputs']),
)
)
if arguments:
if len(arguments) != len(constructor['inputs']):
raise ValueError(
"This contract requires {0} constructor arguments".format(
len(constructor['inputs']),
)
)
is_encodable = check_if_arguments_can_be_encoded(
get_abi_input_types(constructor),
arguments,
)
if not is_encodable:
raise ValueError("Unable to encode provided arguments.")
deploy_data = add_0x_prefix(cls._encodeABI(constructor, arguments, data=cls.code))
else:
deploy_data = add_0x_prefix(cls.code)
return deploy_data
def input_address_formatter(addr):
iban = Iban(addr)
if iban.isValid() and iban.isDirect():
return add_0x_prefix(iban.address())
elif is_strict_address(addr):
return addr
elif is_address(addr):
return add_0x_prefix(addr)
raise ValueError("invalid address")
def input_address_formatter(addr):
iban = Iban(addr)
if iban.isValid() and iban.isDirect():
return add_0x_prefix(iban.address())
elif is_strict_address(addr):
return addr
elif is_address(addr):
return add_0x_prefix(addr)
raise ValueError("invalid address")
def normalize_contract_data(contract_data, contract_meta):
yield 'meta', contract_meta
if 'bin' in contract_data:
yield 'code', add_0x_prefix(contract_data['bin'])
if 'bin-runtime' in contract_data:
yield 'code_runtime', add_0x_prefix(contract_data['bin-runtime'])
if 'abi' in contract_data:
yield 'abi', contract_data['abi']
if 'userdoc' in contract_data:
yield 'userdoc', contract_data['userdoc']
if 'devdoc' in contract_data:
yield 'devdoc', contract_data['devdoc']
def _encode_abi(cls, abi, arguments, data=None):
argument_types = get_abi_input_types(abi)
if not check_if_arguments_can_be_encoded(abi, arguments, {}):
raise TypeError(
"One or more arguments could not be encoded to the necessary "
"ABI type. Expected types are: {0}".format(
', '.join(argument_types), ))
try:
encoded_arguments = encode_abi(
argument_types,
force_obj_to_bytes(arguments),
)
except EncodingError as e:
raise TypeError(
"One or more arguments could not be encoded to the necessary "
"ABI type: {0}".format(str(e)))
if data:
return add_0x_prefix(
force_bytes(remove_0x_prefix(data)) +
force_bytes(remove_0x_prefix(encode_hex(encoded_arguments))))
else:
return encode_hex(encoded_arguments)
def _encode_abi(cls, abi, arguments, data=None):
argument_types = get_abi_input_types(abi)
if not check_if_arguments_can_be_encoded(abi, arguments, {}):
raise TypeError(
"One or more arguments could not be encoded to the necessary "
"ABI type. Expected types are: {0}".format(
', '.join(argument_types),
)
)
try:
encoded_arguments = encode_abi(
argument_types,
force_obj_to_bytes(arguments),
)
except EncodingError as e:
raise TypeError(
"One or more arguments could not be encoded to the necessary "
"ABI type: {0}".format(str(e))
)
if data:
return add_0x_prefix(
force_bytes(remove_0x_prefix(data)) +
force_bytes(remove_0x_prefix(encode_hex(encoded_arguments)))
)
else:
return encode_hex(encoded_arguments)
def _encode_constructor_data(cls, args=None, kwargs=None):
constructor_abi = get_constructor_abi(cls.abi)
if constructor_abi:
if args is None:
args = tuple()
if kwargs is None:
kwargs = {}
arguments = merge_args_and_kwargs(constructor_abi, args, kwargs)
deploy_data = add_0x_prefix(
cls._encode_abi(constructor_abi, arguments, data=cls.code))
else:
deploy_data = add_0x_prefix(cls.code)
return deploy_data
def _encode_transaction_data(cls, fn_name, args=None, kwargs=None):
fn_abi, fn_selector, fn_arguments = cls._get_function_info(
fn_name,
args,
kwargs,
)
return add_0x_prefix(cls._encode_abi(fn_abi, fn_arguments,
fn_selector))
def _encode_constructor_data(cls, args=None, kwargs=None):
constructor_abi = get_constructor_abi(cls.abi)
if constructor_abi:
if args is None:
args = tuple()
if kwargs is None:
kwargs = {}
arguments = merge_args_and_kwargs(constructor_abi, args, kwargs)
deploy_data = add_0x_prefix(
cls._encode_abi(constructor_abi, arguments, data=cls.code)
)
else:
deploy_data = add_0x_prefix(cls.code)
return deploy_data
def _encodeABI(cls, abi, arguments, data=None):
arguent_types = get_abi_input_types(abi)
encoded_arguments = encode_abi(arguent_types, force_obj_to_bytes(arguments))
if data:
return add_0x_prefix(
force_bytes(remove_0x_prefix(data)) +
force_bytes(remove_0x_prefix(encode_hex(encoded_arguments)))
)
else:
return encode_hex(encoded_arguments)
def _encodeABI(cls, abi, arguments, data=None):
arguent_types = get_abi_input_types(abi)
encoded_arguments = encode_abi(arguent_types,
force_obj_to_bytes(arguments))
if data:
return add_0x_prefix(
force_bytes(remove_0x_prefix(data)) +
force_bytes(remove_0x_prefix(encode_hex(encoded_arguments))))
else:
return encode_hex(encoded_arguments)
def address(self):
"""
Should be called to get client direct address
@method address
@returns {String} client direct address
"""
if self.isDirect():
base36 = self._iban[4:]
asInt = int(base36, 36)
return add_0x_prefix(pad_left_hex(baseN(asInt, 16), 20))
return ""
def address(self):
"""
Should be called to get client direct address
@method address
@returns {String} client direct address
"""
if self.isDirect():
base36 = self._iban[4:]
asInt = int(base36, 36)
return add_0x_prefix(pad_left_hex(baseN(asInt, 16), 20))
return ""
def extract_ecdsa_signer(msg_hash, signature):
msg_hash_bytes = decode_hex(msg_hash) if msg_hash.startswith(b'0x') else msg_hash
signature_bytes = decode_hex(signature) if signature.startswith(b'0x') else signature
pk = PublicKey(flags=ALL_FLAGS)
rec_id = signature_bytes[64]
if is_string(rec_id):
rec_id = ord(rec_id)
pk.public_key = pk.ecdsa_recover(
msg_hash_bytes,
pk.ecdsa_recoverable_deserialize(
signature_bytes[:64], rec_id,
),
raw=True,
)
pk_serialized = pk.serialize(compressed=False)
address = add_0x_prefix(sha3(encode_pubkey(pk_serialized, 'bin')[1:])[-40:])
return address
def extract_ecdsa_signer(msg_hash, signature):
msg_hash_bytes = decode_hex(msg_hash) if msg_hash.startswith(b'0x') else msg_hash
signature_bytes = decode_hex(signature) if signature.startswith(b'0x') else signature
pk = PublicKey(flags=ALL_FLAGS)
rec_id = signature_bytes[64]
if is_string(rec_id):
rec_id = ord(rec_id)
pk.public_key = pk.ecdsa_recover(
msg_hash_bytes,
pk.ecdsa_recoverable_deserialize(
signature_bytes[:64], rec_id,
),
raw=True,
)
pk_serialized = pk.serialize(compressed=False)
address = add_0x_prefix(sha3(encode_pubkey(pk_serialized, 'bin')[1:])[-40:])
return address
def _encode_transaction_data(cls, fn_name, args=None, kwargs=None):
fn_abi, fn_selector, fn_arguments = cls._get_function_info(
fn_name, args, kwargs,
)
return add_0x_prefix(cls._encode_abi(fn_abi, fn_arguments, fn_selector))
def sha3(s):
return add_0x_prefix(sha3_256(s).hexdigest())
def test_eth_sign(web3_empty, skip_if_testrpc):
web3 = web3_empty
skip_if_testrpc(web3)
private_key_hex = '0x5e95384d8050109aab08c1922d3c230739bc16976553c317e5d0b87b59371f2a'
private_key = decode_hex(private_key_hex)
# This imports the private key into the running geth instance and unlocks
# the account so that it can sign things.
# `0xa5df35f30ba0ce878b1061ae086289adff3ba1e0`
address = web3.personal.importRawKey(private_key, "password")
web3.personal.unlockAccount(address, "password")
assert add_0x_prefix(encode_hex(privtoaddr(private_key))) == add_0x_prefix(address)
assert address == '0xa5df35f30ba0ce878b1061ae086289adff3ba1e0'
# the data to be signed
data = b'1234567890abcdefghijklmnopqrstuvwxyz'
# the hash of the data `0x089c33d56ed10bd8b571a0f493cedb28db1ae0f40c6cd266243001528c06eab3`
data_hash = web3.sha3(data, encoding=None)
data_hash_bytes = decode_hex(data_hash)
assert force_bytes(data_hash) == sha3(data)
priv_key = PrivateKey(flags=ALL_FLAGS)
priv_key.set_raw_privkey(private_key)
# sanit check the extract_ecdsa_signer function works as expected.
vector_sig = priv_key.ecdsa_sign_recoverable(data_hash_bytes, raw=True, digest=sha3_256)
vector_sig_bytes, rec_id = priv_key.ecdsa_recoverable_serialize(vector_sig)
vector_sig_bytes_full = vector_sig_bytes + force_bytes(chr(rec_id))
vector_address = force_text(extract_ecdsa_signer(data_hash_bytes, vector_sig_bytes_full))
assert vector_address == address
# Now have geth sign some data.
signature_hex = web3.eth.sign(address, data)
signature_bytes = decode_hex(signature_hex)
actual_signer = extract_ecdsa_signer(data_hash_bytes, signature_bytes)
assert actual_signer == address
# Verify the signature against the public key derived from the
# original private key. It fails.
rec_id = signature_bytes[64]
if is_string(rec_id):
rec_id = ord(rec_id)
recoverable_signature = priv_key.ecdsa_recoverable_deserialize(
signature_bytes[:64],
rec_id,
)
signature = priv_key.ecdsa_recoverable_convert(recoverable_signature)
is_valid = priv_key.pubkey.ecdsa_verify(
msg=data,
raw_sig=signature,
digest=sha3_256,
)
assert is_valid
def sha3(s):
return add_0x_prefix(sha3_256(s).hexdigest())
def test_eth_sign(web3_empty, skip_if_testrpc):
web3 = web3_empty
skip_if_testrpc(web3)
private_key_hex = '0x5e95384d8050109aab08c1922d3c230739bc16976553c317e5d0b87b59371f2a'
private_key = decode_hex(private_key_hex)
# This imports the private key into the running geth instance and unlocks
# the account so that it can sign things.
# `0xa5df35f30ba0ce878b1061ae086289adff3ba1e0`
address = web3.personal.importRawKey(private_key, "password")
web3.personal.unlockAccount(address, "password")
assert add_0x_prefix(encode_hex(
privtoaddr(private_key))) == add_0x_prefix(address)
assert address == '0xa5df35f30ba0ce878b1061ae086289adff3ba1e0'
# the data to be signed
data = b'1234567890abcdefghijklmnopqrstuvwxyz'
# the hash of the data `0x089c33d56ed10bd8b571a0f493cedb28db1ae0f40c6cd266243001528c06eab3`
data_hash = web3.sha3(data, encoding=None)
data_hash_bytes = decode_hex(data_hash)
assert force_bytes(data_hash) == sha3(data)
priv_key = PrivateKey(flags=ALL_FLAGS)
priv_key.set_raw_privkey(private_key)
# sanit check the extract_ecdsa_signer function works as expected.
vector_sig = priv_key.ecdsa_sign_recoverable(data_hash_bytes,
raw=True,
digest=sha3_256)
vector_sig_bytes, rec_id = priv_key.ecdsa_recoverable_serialize(vector_sig)
vector_sig_bytes_full = vector_sig_bytes + force_bytes(chr(rec_id))
vector_address = force_text(
extract_ecdsa_signer(data_hash_bytes, vector_sig_bytes_full))
assert vector_address == address
# Now have geth sign some data.
signature_hex = web3.eth.sign(address, data)
signature_bytes = decode_hex(signature_hex)
actual_signer = extract_ecdsa_signer(data_hash_bytes, signature_bytes)
assert actual_signer == address
# Verify the signature against the public key derived from the
# original private key. It fails.
rec_id = signature_bytes[64]
if is_string(rec_id):
rec_id = ord(rec_id)
recoverable_signature = priv_key.ecdsa_recoverable_deserialize(
signature_bytes[:64],
rec_id,
)
signature = priv_key.ecdsa_recoverable_convert(recoverable_signature)
is_valid = priv_key.pubkey.ecdsa_verify(
msg=data,
raw_sig=signature,
digest=sha3_256,
)
assert is_valid