def _sign(self, data: bytes) -> bytes:
""" Use eth_sign compatible hasher to sign matrix data """
return signing.sign(
data,
self._raiden_service.private_key,
hasher=eth_sign_sha3,
)
def _sign(self, data: bytes) -> bytes:
""" Use eth_sign compatible hasher to sign matrix data """
return signing.sign(
data,
self._raiden_service.private_key,
hasher=eth_sign_sha3,
)
def sign(self, private_key):
""" Sign message using `private_key`. """
packed = self.packed()
field = packed.fields_spec[-1]
assert field.name == 'signature', 'signature is not the last field'
message_data = packed.data[:-field.size_bytes]
signature, public_key = signing.sign(message_data, private_key)
packed.signature = signature
self.sender = signing.address_from_key(public_key)
self.signature = packed.signature
def sign(self, private_key):
""" Sign message using `private_key`. """
packed = self.packed()
field = packed.fields_spec[-1]
assert field.name == 'signature', 'signature is not the last field'
message_data = packed.data[:-field.size_bytes]
signature, public_key = signing.sign(message_data, private_key)
packed.signature = signature
self.sender = signing.address_from_key(public_key)
self.signature = packed.signature
def sign(self, private_key, node_address):
""" Sign message using `private_key`. """
packed = self.packed()
field = type(packed).fields_spec[-1]
assert field.name == 'signature', 'signature is not the last field'
# this slice must be from the end of the buffer
message_data = packed.data[:-field.size_bytes]
signature = signing.sign(message_data, private_key)
packed.signature = signature
self.sender = node_address
self.signature = signature
def sign(self, private_key):
""" Sign message using `private_key`. """
packed = self.packed()
field = packed.fields_spec[-1]
assert field.name == 'signature', 'signature is not the last field'
message_data = packed.data[:-field.
size_bytes] # XXX: this slice must be from the end of the buffer
signature, public_key = signing.sign(message_data, private_key)
packed.data[-field.size_bytes:] = signature
self.sender = publickey_to_address(public_key)
self.signature = signature
def sign(self, private_key, node_address):
""" Sign message using `private_key`. """
packed = self.packed()
field = packed.fields_spec[-1]
assert field.name == 'signature', 'signature is not the last field'
# this slice must be from the end of the buffer
message_data = packed.data[:-field.size_bytes]
signature = signing.sign(message_data, private_key)
packed.data[-field.size_bytes:] = signature
self.sender = node_address
self.signature = signature
def sign(self, private_key, node_address):
packed = self.packed()
klass = type(packed)
field = klass.fields_spec[-1]
assert field.name == 'signature', 'signature is not the last field'
data = packed.data
data_to_sign = pack_signing_data(
klass.get_bytes_from(data, 'nonce'),
klass.get_bytes_from(data, 'transferred_amount'),
klass.get_bytes_from(data, 'channel'),
klass.get_bytes_from(data, 'locksroot'),
self.message_hash,
)
signature = signing.sign(data_to_sign, private_key)
packed.signature = signature
self.sender = node_address
self.signature = signature
def sign(self, private_key, node_address):
packed = self.packed()
klass = type(packed)
field = klass.fields_spec[-1]
assert field.name == 'signature', 'signature is not the last field'
data = packed.data
nonce = klass.get_bytes_from(data, 'nonce')
transferred_amount = klass.get_bytes_from(data, 'transferred_amount')
locksroot = klass.get_bytes_from(data, 'locksroot')
channel_address = klass.get_bytes_from(data, 'channel')
message_hash = self.message_hash
data_to_sign = nonce + transferred_amount + locksroot + channel_address + message_hash
signature = signing.sign(data_to_sign, private_key)
packed.signature = signature
self.sender = node_address
self.signature = signature
def sign(self, private_key):
""" Sign message using `private_key`. """
message_data = self._data_to_sign()
self.signature = signing.sign(message_data, private_key)
def sign(self, private_key):
""" Sign message using `private_key`. """
message_data = self._data_to_sign()
self.signature = signing.sign(message_data, private_key)
def find_max_pending_transfers(gas_limit):
"""Measure gas consumption of TokenNetwork.unlock() depending on number of
pending transfers and find the maximum number of pending transfers so
gas_limit is not exceeded."""
tester = ContractTester(generate_keys=2)
tester.deploy_contract('SecretRegistry')
tester.deploy_contract(
'HumanStandardToken',
_initialAmount=100000,
_decimalUnits=3,
_tokenName='SomeToken',
_tokenSymbol='SMT',
)
tester.deploy_contract(
'TokenNetwork',
_token_address=tester.contract_address('HumanStandardToken'),
_secret_registry=tester.contract_address('SecretRegistry'),
_chain_id=1,
_settlement_timeout_min=100,
_settlement_timeout_max=200,
)
tester.call_transaction(
'HumanStandardToken',
'transfer',
_to=tester.accounts[1],
_value=10000,
)
receipt = tester.call_transaction(
'TokenNetwork',
'openChannel',
participant1=tester.accounts[0],
participant2=tester.accounts[1],
settle_timeout=150,
)
channel_identifier = receipt['logs'][0]['topics'][1]
tester.call_transaction(
'HumanStandardToken',
'approve',
sender=tester.accounts[0],
_spender=tester.contract_address('TokenNetwork'),
_value=10000,
)
tester.call_transaction(
'HumanStandardToken',
'approve',
sender=tester.accounts[1],
_spender=tester.contract_address('TokenNetwork'),
_value=5000,
)
tester.call_transaction(
'TokenNetwork',
'setTotalDeposit',
participant=tester.accounts[0],
total_deposit=5000,
partner=tester.accounts[1],
)
tester.call_transaction(
'TokenNetwork',
'setTotalDeposit',
participant=tester.accounts[1],
total_deposit=2000,
partner=tester.accounts[0],
)
print(
"Measuring unlock()'s gas cost for different Merkle tree widths, can take a while..."
)
before_closing = tester.tester.take_snapshot()
enough = 0
too_much = 1024
nonce = 10
additional_hash = urandom(32)
token_network_identifier = tester.contract_address('TokenNetwork')
while enough + 1 < too_much:
tree_size = (enough + too_much) // 2
tester.tester.revert_to_snapshot(before_closing)
pending_transfers_tree = get_pending_transfers_tree(
tester.web3,
unlockable_amounts=[1] * tree_size,
)
balance_hash = hash_balance_data(3000, 2000,
pending_transfers_tree.merkle_root)
data_to_sign = pack_signing_data(
nonce,
balance_hash,
additional_hash,
channel_identifier,
token_network_identifier,
1,
)
signature = sign(data_to_sign, tester.private_keys[1])
tester.call_transaction(
'TokenNetwork',
'closeChannel',
partner=tester.accounts[1],
balance_hash=balance_hash,
nonce=nonce,
additional_hash=additional_hash,
signature=signature,
)
tester.tester.mine_blocks(160) # close settlement window
tester.call_transaction(
'TokenNetwork',
'settleChannel',
participant1=tester.accounts[0],
participant1_transferred_amount=0,
participant1_locked_amount=0,
participant1_locksroot=b'\x00' * 32,
participant2=tester.accounts[1],
participant2_transferred_amount=3000,
participant2_locked_amount=2000,
participant2_locksroot=pending_transfers_tree.merkle_root,
)
receipt = tester.call_transaction(
'TokenNetwork',
'unlock',
participant=tester.accounts[0],
partner=tester.accounts[1],
merkle_tree_leaves=pending_transfers_tree.packed_transfers,
)
gas_used = receipt['gasUsed']
if gas_used <= gas_limit:
enough = tree_size
print(
f'{tree_size} pending transfers work ({gas_used} gas needed to unlock)'
)
else:
too_much = tree_size
print(
f'{tree_size} pending transfers are too much ({gas_used} gas needed to unlock)'
)
