def get_public_key(self, bip32_path):
# S-L-O-W - we don't handle the fingerprint directly, so compute it manually from the previous node
# This only happens once so it's bearable
self.get_client() # prompt for the PIN before displaying the dialog if necessary
self.plugin.handler.show_message("Computing master public key")
try:
splitPath = bip32_path.split('/')
fingerprint = 0
if len(splitPath) > 1:
prevPath = "/".join(splitPath[0:len(splitPath) - 1])
nodeData = self.get_client().getWalletPublicKey(prevPath)
publicKey = compress_public_key(nodeData['publicKey'])
h = hashlib.new('ripemd160')
h.update(hashlib.sha256(publicKey).digest())
fingerprint = unpack(">I", h.digest()[0:4])[0]
nodeData = self.get_client().getWalletPublicKey(bip32_path)
publicKey = compress_public_key(nodeData['publicKey'])
depth = len(splitPath)
lastChild = splitPath[len(splitPath) - 1].split('\'')
if len(lastChild) == 1:
childnum = int(lastChild[0])
else:
childnum = 0x80000000 | int(lastChild[0])
xpub = "0488B21E".decode('hex') + chr(depth) + self.i4b(fingerprint) + self.i4b(childnum) + str(nodeData['chainCode']) + str(publicKey)
except Exception, e:
self.give_error(e, True)
updatedTransaction = hexlify(updatedTransaction)
tx.update(updatedTransaction)
self.client.bad = use2FA
self.signing = False
def check_proper_device(self):
pubKey = DecodeBase58Check(self.master_public_keys["x/0'"])[45:]
if not self.device_checked:
self.plugin.handler.show_message("Checking device")
try:
nodeData = self.get_client().getWalletPublicKey("44'/0'/0'")
except Exception, e:
self.give_error(e, True)
finally:
self.plugin.handler.stop()
pubKeyDevice = compress_public_key(nodeData['publicKey'])
self.device_checked = True
if pubKey != pubKeyDevice:
self.proper_device = False
else:
self.proper_device = True
return self.proper_device
def password_dialog(self, msg=None):
if not msg:
msg = _("Do not enter your device PIN here !\r\n\r\n" \
"Your BTChip wants to talk to you and tell you a unique second factor code.\r\n" \
"For this to work, please open a text editor (on a different computer / device if you believe this computer is compromised) and put your cursor into it, unplug your BTChip and plug it back in.\r\n" \
"It should show itself to your computer as a keyboard and output the second factor along with a summary of the transaction it is signing into the text-editor.\r\n\r\n" \
"Check that summary and then enter the second factor code here.\r\n" \
