def _do_test_bip32(self, seed: str, sequence):
node = BIP32Node.from_rootseed(bfh(seed), xtype='standard')
xprv, xpub = node.to_xprv(), node.to_xpub()
self.assertEqual("m/", sequence[0:2])
sequence = sequence[2:]
for n in sequence.split('/'):
if n[-1] != "'":
xpub2 = BIP32Node.from_xkey(xpub).subkey_at_public_derivation(
n).to_xpub()
node = BIP32Node.from_xkey(xprv).subkey_at_private_derivation(n)
xprv, xpub = node.to_xprv(), node.to_xpub()
if n[-1] != "'":
self.assertEqual(xpub, xpub2)
return xpub, xprv
def update(self, window):
wallet = window.wallet
if type(wallet) != Multisig_Wallet:
return
if self.listener is None:
self.logger.info("starting listener")
self.listener = Listener(self)
self.listener.start()
elif self.listener:
self.logger.info("shutting down listener")
self.listener.stop()
self.listener = None
self.keys = []
self.cosigner_list = []
for key, keystore in wallet.keystores.items():
xpub = keystore.get_master_public_key()
pubkey = BIP32Node.from_xkey(xpub).eckey.get_public_key_bytes(compressed=True)
_hash = bh2u(crypto.sha256d(pubkey))
self.logger.info(_hash)
if not keystore.is_watching_only():
self.keys.append((key, _hash, window))
server.xpub(_hash)
else:
self.cosigner_list.append((window, xpub, pubkey, _hash))
server.cosigners().append(_hash)
for key in self.keys:
self.logger.info(f'xpub: {key[1]}')
for cosigner in self.cosigner_list:
self.logger.info(f'cosigners: {cosigner[3]}')
self.wallet_hash = server.wallet_hash()
self.logger.info(self.wallet_hash)
if self.listener:
self.listener.set_keyhashes([t[1] for t in self.keys])
self.listener.set_wallet_hash(self.wallet_hash)
def mitm_verify(self, sig, expect_xpub):
# verify a signature (65 bytes) over the session key, using the master bip32 node
# - customized to use specific EC library of Electrum.
pubkey = BIP32Node.from_xkey(expect_xpub).eckey
try:
pubkey.verify_message_hash(sig[1:65], self.session_key)
return True
except:
return False
def make_xpub(xpub, s) -> str:
rootnode = BIP32Node.from_xkey(xpub)
child_pubkey, child_chaincode = bip32._CKD_pub(
parent_pubkey=rootnode.eckey.get_public_key_bytes(compressed=True),
parent_chaincode=rootnode.chaincode,
child_index=s)
child_node = BIP32Node(xtype=rootnode.xtype,
eckey=ecc.ECPubkey(child_pubkey),
chaincode=child_chaincode)
return child_node.to_xpub()
def _make_node_path(self, xpub, address_n):
bip32node = BIP32Node.from_xkey(xpub)
node = self.types.HDNodeType(
depth=bip32node.depth,
fingerprint=int.from_bytes(bip32node.fingerprint, 'big'),
child_num=int.from_bytes(bip32node.child_number, 'big'),
chain_code=bip32node.chaincode,
public_key=bip32node.eckey.get_public_key_bytes(compressed=True),
)
return self.types.HDNodePathType(node=node, address_n=address_n)
def get_signing_xpub(xtype):
if not constants.net.TESTNET:
xpub = "xpub661MyMwAqRbcGnMkaTx2594P9EDuiEqMq25PM2aeG6UmwzaohgA6uDmNsvSUV8ubqwA3Wpste1hg69XHgjUuCD5HLcEp2QPzyV1HMrPppsL"
else:
xpub = "tpubD6NzVbkrYhZ4XdmyJQcCPjQfg6RXVUzGFhPjZ7uvRC8JLcS7Hw1i7UTpyhp9grHpak4TyK2hzBJrujDVLXQ6qB5tNpVx9rC6ixijUXadnmY"
if xtype not in ('standard', 'p2wsh'):
raise NotImplementedError('xtype: {}'.format(xtype))
if xtype == 'standard':
return xpub
node = BIP32Node.from_xkey(xpub)
return node._replace(xtype=xtype).to_xpub()
def make_billing_address(wallet, num, addr_type):
long_id, short_id = wallet.get_user_id()
xpub = make_xpub(get_billing_xpub(), long_id)
usernode = BIP32Node.from_xkey(xpub)
child_node = usernode.subkey_at_public_derivation([num])
pubkey = child_node.eckey.get_public_key_bytes(compressed=True)
if addr_type == 'legacy':
return bitcoin.public_key_to_p2pkh(pubkey)
elif addr_type == 'segwit':
return bitcoin.public_key_to_p2wpkh(pubkey)
else:
raise ValueError(f'unexpected billing type: {addr_type}')
def get_xpub(self, bip32_path, xtype):
assert xtype in self.plugin.SUPPORTED_XTYPES
reply = self._get_xpub(bip32_path)
if reply:
xpub = reply['xpub']
# Change type of xpub to the requested type. The firmware
# only ever returns the mainnet standard type, but it is agnostic
# to the type when signing.
if xtype != 'standard' or constants.net.TESTNET:
node = BIP32Node.from_xkey(xpub, net=constants.BitcoinMainnet)
xpub = node._replace(xtype=xtype).to_xpub()
return xpub
else:
raise Exception('no reply')
def get_xpub(self, bip32_path, xtype):
assert xtype in ColdcardPlugin.SUPPORTED_XTYPES
_logger.info('Derive xtype = %r' % xtype)
xpub = self.dev.send_recv(CCProtocolPacker.get_xpub(bip32_path),
timeout=5000)
# TODO handle timeout?
# change type of xpub to the requested type
try:
node = BIP32Node.from_xkey(xpub)
except InvalidMasterKeyVersionBytes:
raise UserFacingException(
_('Invalid xpub magic. Make sure your {} device is set to the correct chain.'
).format(self.device)) from None
if xtype != 'standard':
xpub = node._replace(xtype=xtype).to_xpub()
return xpub
def f(xprv):
rootnode = BIP32Node.from_xkey(xprv)
key = rootnode.subkey_at_private_derivation((0, 0)).eckey
sig = key.sign_message(message, True)
return base64.b64encode(sig).decode()
def __init__(self, tx, parent, desc, prompt_if_unsaved):
'''Transactions in the wallet will show their description.
Pass desc to give a description for txs not yet in the wallet.
'''
# We want to be a top-level window
QDialog.__init__(self, parent=None)
self.tx = tx = copy.deepcopy(tx) # type: Transaction
try:
self.tx.deserialize()
except BaseException as e:
raise SerializationError(e)
self.main_window = parent
self.wallet = parent.wallet
self.prompt_if_unsaved = prompt_if_unsaved
self.saved = False
self.desc = desc
self.locks = {}
self.currently_signing = None
# Set timeout flag
self.timed_out = False
self.main_window = parent
self.wallet = parent.wallet
# store the keyhash and cosigners for current wallet
self.keyhashes = set()
self.cosigner_list = set()
if type(self.wallet) == Multisig_Wallet:
for key, keystore in self.wallet.keystores.items():
xpub = keystore.get_master_public_key()
pubkey = BIP32Node.from_xkey(xpub).eckey.get_public_key_bytes(
compressed=True)
_hash = bh2u(crypto.sha256d(pubkey))
if not keystore.is_watching_only():
self.keyhashes.add(_hash)
else:
self.cosigner_list.add(_hash)
self.locks[_hash] = server.get(_hash + '_lock')
if self.locks[_hash]:
name = server.get(_hash + '_name')
if name:
self.currently_signing = name
self.setMinimumWidth(200)
self.setWindowTitle(_("Information"))
vbox = QVBoxLayout()
self.setLayout(vbox)
self.warning = QLabel()
vbox.addWidget(self.warning)
warning_text = (_(
'A transaction with the following information is currently being signed'
) + '\n' + _(
'by a cosigner. A notification will appear within 30 seconds of either signing'
) + '\n' + _('or the transaction window expiring.'))
self.warning.setText(warning_text)
self.tx_desc = QLabel()
vbox.addWidget(self.tx_desc)
self.status_label = QLabel()
vbox.addWidget(self.status_label)
self.date_label = QLabel()
vbox.addWidget(self.date_label)
self.amount_label = QLabel()
vbox.addWidget(self.amount_label)
self.size_label = QLabel()
vbox.addWidget(self.size_label)
self.fee_label = QLabel()
vbox.addWidget(self.fee_label)
self.cancel_button = b = QPushButton(_("Close"))
b.clicked.connect(self.close)
b.setDefault(True)
# Action buttons
self.buttons = [self.cancel_button]
# Add label for countdown timer
self.time_out_label = QLabel()
vbox.addWidget(self.time_out_label)
run_hook('transaction_dialog', self)
hbox = QHBoxLayout()
hbox.addLayout(Buttons(*self.buttons))
vbox.addLayout(hbox)
self.time_left_int = int(DURATION_INT)
for _hash, expire in self.locks.items():
if expire:
# Set time left to desired duration
self.time_left_int = int(DURATION_INT -
(int(server.get_current_time()) -
int(expire)))
self.timer_start()
self.update()
def on_receive(self, keyhash, data):
self.logger.info(f"signal arrived for {keyhash}")
for key, _hash, window in self.keys:
if _hash == keyhash:
break
else:
self.logger.info("keyhash not found")
return
# convert data from string to json
data = json.loads(data)
signed = data.get('signed')
txs = data.get('txs')
# invalid JSON structure
if not signed or not txs:
self.logger.info("cosigner data malformed, missing entry")
return
# check if user has signed
if keyhash in signed:
self.logger.info("user has already signed")
return
message = txs[keyhash]
wallet = window.wallet
if isinstance(wallet.keystore, keystore.Hardware_KeyStore):
window.show_warning(_('An encrypted transaction was retrieved from cosigning pool.') + '\n' +
_('However, hardware wallets do not support message decryption, '
'which makes them not compatible with the current design of cosigner pool.'))
return
elif wallet.has_keystore_encryption():
password = window.password_dialog(str(datetime.datetime.now().strftime("%a, %d %b %Y %H:%M:%S") + '\n\n' +
_('An encrypted transaction was retrieved from cosigning pool.') + '\n' +
_('Please enter your password to decrypt it. ')), parent=None)
if not password:
return
else:
password = None
if not window.question(_("An encrypted transaction was retrieved from cosigning pool.") + '\n' +
_("Do you want to open it now?")):
return
xprv = None
try:
xprv = wallet.keystore.get_master_private_key(password)
if not xprv:
return
except InvalidPassword as e:
self.logger.info("Incorrect Password")
window.show_error(_("Incorrect Password"))
return
try:
privkey = BIP32Node.from_xkey(xprv).eckey
message = bh2u(privkey.decrypt_message(message))
except Exception as e:
self.logger.exception('')
window.show_error(_('Error decrypting message') + ':\n' + str(e))
return
tx = transaction.Transaction(message)
def calculate_wait_time(expire):
# calculate wait time
server_time = server.get_current_time()
mins, secs = 0, 0
if server_time is not None:
wait_time = int((WAIT_TIME - (int(server_time) - int(expire))))
mins, secs = divmod(wait_time, 60)
return '{:02d}:{:02d}'.format(mins, secs)
# check if lock has been placed for wallet
lock = server.lock
if lock:
# calculate wait time based on lock expiry and server time
timeformat = calculate_wait_time(lock['timestamp'])
# display pop up
window.show_warning(_("A cosigner is currently signing the transaction.") + '\n' +
_("Please wait {} until the signing has concluded.".format(timeformat)))
xpub = lock['xpub']
name = None
try:
name = server.get(xpub+'_name')
except Exception as e:
self.logger.exception(e)
self.logger.error("Failed to get cosigner name from server")
show_timeout_wait_dialog(tx, xpub, name, window, prompt_if_unsaved=True)
return
else:
buffer = {'timestamp' : '', 'xpub' : ''}
buffer['timestamp'] = str(server.get_current_time())
buffer['xpub'] = keyhash
server.lock = buffer
time_until_expired = '10 minutes'
window.show_warning(_("You have {} to conclude signing after which the dialog will".format(time_until_expired)) + '\n' +
_("automatically close."), parent=None)
self.listener.clear(keyhash)
show_transaction_timeout(tx, signed, window, prompt_if_unsaved=True)
def on_receive(self, keyhash, message):
self.logger.info(f"signal arrived for {keyhash}")
WAIT_TIME = 10 * 60
if self.suppress_notifications:
for window, xpub, K, _hash in self.cosigner_list:
if server.get(_hash + '_lock'):
return
self.suppress_notifications = False
for key, _hash, window in self.keys:
if _hash == keyhash:
break
else:
self.logger.info("keyhash not found")
return
wallet = window.wallet
if isinstance(wallet.keystore, keystore.Hardware_KeyStore):
window.show_warning(
_('An encrypted transaction was retrieved from cosigning pool.'
) + '\n' +
_('However, hardware wallets do not support message decryption, '
'which makes them not compatible with the current design of cosigner pool.'
))
return
elif wallet.has_keystore_encryption():
# set pick to false when opening password dialog
server.put(keyhash + '_pick', 'False')
password = window.password_dialog(
_('An encrypted transaction was retrieved from cosigning pool.'
) + '\n' + _('Please enter your password to decrypt it.'))
if not password:
# set pick back to true if password incorrect or omitted
server.put(keyhash + '_pick', 'True')
return
else:
password = None
if not window.question(
_("An encrypted transaction was retrieved from cosigning pool."
) + '\n' + _("Do you want to open it now?")):
return
xprv = wallet.keystore.get_master_private_key(password)
if not xprv:
return
try:
privkey = BIP32Node.from_xkey(xprv).eckey
message = bh2u(privkey.decrypt_message(message))
except Exception as e:
self.logger.exception('')
window.show_error(_('Error decrypting message') + ':\n' + str(e))
return
#self.listener.clear(keyhash)
tx = transaction.Transaction(message)
def calculate_wait_time(expire):
# calculate wait time
wait_time = int(
(WAIT_TIME - (int(server.get_current_time()) - int(expire))))
mins, secs = divmod(wait_time, 60)
return '{:02d}:{:02d}'.format(mins, secs)
# check if lock has been placed for any wallets
for window, xpub, K, _hash in self.cosigner_list:
expire = server.get(_hash + '_lock')
if expire:
# set pick back to true if user lock is present
server.put(keyhash + '_pick', 'True')
# suppress any further notifications
self.suppress_notifications = True
# calculate wait time based on lock expiry and server time
timeformat = calculate_wait_time(expire)
# display pop up
window.show_warning(
_("A cosigner is currently signing the transaction.") +
'\n' +
_("Please wait {} until the signing has concluded.".format(
timeformat)))
show_timeout_wait_dialog(tx, window, prompt_if_unsaved=True)
return
# test if wallet has previously placed a lock
current_wallet_lock = server.get(keyhash + '_lock')
if not current_wallet_lock:
# no lock has been placed for current wallet => lock transaction dialog
server.put(keyhash + '_lock', str(server.get_current_time()))
time_until_expired = '10 minutes'
else:
time_until_expired = calculate_wait_time(current_wallet_lock)
# place flag to test for graceful shutdown
server.put(keyhash + '_shutdown', 'up')
window.show_warning(
_("You have {} to conclude signing after which the dialog will".
format(time_until_expired)) + '\n' + _("automatically close."))
show_transaction_timeout(tx, window, prompt_if_unsaved=True)
def __init__(self, tx, parent, desc, prompt_if_unsaved):
'''Transactions in the wallet will show their description.
Pass desc to give a description for txs not yet in the wallet.
'''
# We want to be a top-level window
QDialog.__init__(self, parent=None)
# Take a copy; it might get updated in the main window by
# e.g. the FX plugin. If this happens during or after a long
# sign operation the signatures are lost.
self.tx = tx = copy.deepcopy(tx) # type: Transaction
try:
self.tx.deserialize()
except BaseException as e:
raise SerializationError(e)
self.main_window = parent # type: ElectrumWindow
self.wallet = parent.wallet
self.prompt_if_unsaved = prompt_if_unsaved
self.saved = False
self.desc = desc
# store the keyhash and cosigners for current wallet
self.keyhashes = set()
self.cosigner_list = set()
if type(self.wallet) == Multisig_Wallet:
for key, keystore in self.wallet.keystores.items():
xpub = keystore.get_master_public_key()
pubkey = BIP32Node.from_xkey(xpub).eckey.get_public_key_bytes(compressed=True)
_hash = bh2u(crypto.sha256d(pubkey))
if not keystore.is_watching_only():
self.keyhashes.add(_hash)
else:
self.cosigner_list.add(_hash)
# if the wallet can populate the inputs with more info, do it now.
# as a result, e.g. we might learn an imported address tx is segwit,
# in which case it's ok to display txid
tx.add_inputs_info(self.wallet)
self.setMinimumWidth(950)
self.setWindowTitle(_("Transaction"))
vbox = QVBoxLayout()
self.setLayout(vbox)
vbox.addWidget(QLabel(_("Transaction ID:")))
self.tx_hash_e = ButtonsLineEdit()
qr_show = lambda: parent.show_qrcode(str(self.tx_hash_e.text()), 'Transaction ID', parent=self)
qr_icon = "qrcode_white.png" if ColorScheme.dark_scheme else "qrcode.png"
self.tx_hash_e.addButton(qr_icon, qr_show, _("Show as QR code"))
self.tx_hash_e.setReadOnly(True)
vbox.addWidget(self.tx_hash_e)
self.add_tx_stats(vbox)
vbox.addSpacing(10)
self.add_io(vbox)
self.sign_button = b = QPushButton(_("Sign"))
b.clicked.connect(self.sign)
self.broadcast_button = b = QPushButton(_("Broadcast"))
b.clicked.connect(self.do_broadcast)
self.save_button = b = QPushButton(_("Save"))
save_button_disabled = not tx.is_complete()
b.setDisabled(save_button_disabled)
if save_button_disabled:
b.setToolTip(SAVE_BUTTON_DISABLED_TOOLTIP)
else:
b.setToolTip(SAVE_BUTTON_ENABLED_TOOLTIP)
b.clicked.connect(self.save)
self.export_button = b = QPushButton(_("Export"))
b.clicked.connect(self.export)
self.cancel_button = b = QPushButton(_("Close"))
b.clicked.connect(self.close)
b.setDefault(True)
self.qr_button = b = QPushButton()
b.setIcon(read_QIcon(qr_icon))
b.clicked.connect(self.show_qr)
self.copy_button = CopyButton(lambda: str(self.tx), parent.app)
# Action buttons
self.buttons = [self.sign_button, self.broadcast_button, self.cancel_button]
# Transaction sharing buttons
self.sharing_buttons = [self.copy_button, self.qr_button, self.export_button, self.save_button]
run_hook('transaction_dialog', self)
hbox = QHBoxLayout()
hbox.addLayout(Buttons(*self.sharing_buttons))
hbox.addStretch(1)
hbox.addLayout(Buttons(*self.buttons))
vbox.addLayout(hbox)
self.update()