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))
if not keystore.is_watching_only():
self.keys.append((key, _hash, window))
else:
self.cosigner_list.append((window, xpub, pubkey, _hash))
if self.listener:
self.listener.set_keyhashes([t[1] for t in self.keys])
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_node_path(self, xpub, address_n):
bip32node = BIP32Node.from_xkey(xpub)
node = 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 HDNodePathType(node=node, address_n=address_n)
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 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 on_receive(self, keyhash, message):
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
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(
_('An encrypted transaction was retrieved from cosigning pool.'
) + '\n' + _('Please enter your password to decrypt it.'))
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 = 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' + repr(e))
return
self.listener.clear(keyhash)
tx = transaction.Transaction(message)
show_transaction(tx, window, prompt_if_unsaved=True)
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()