LBRY-Vault/electrum/plugins/digitalbitbox/digitalbitbox.py
SomberNight bd32b88f62
introduce UserFacingException
we should not raise generic Exception when wanting to communicate with
the user. it makes distinguishing programming errors and messages hard,
as the caller will necessarily need to catch all Exceptions then
2018-11-08 19:46:15 +01:00

768 lines
30 KiB
Python

# ----------------------------------------------------------------------------------
# Electrum plugin for the Digital Bitbox hardware wallet by Shift Devices AG
# digitalbitbox.com
#
try:
from electrum.crypto import sha256d, EncodeAES, DecodeAES
from electrum.bitcoin import (TYPE_ADDRESS, push_script, var_int, public_key_to_p2pkh,
is_address)
from electrum.bip32 import serialize_xpub, deserialize_xpub
from electrum import ecc
from electrum.ecc import msg_magic
from electrum.wallet import Standard_Wallet
from electrum import constants
from electrum.transaction import Transaction
from electrum.i18n import _
from electrum.keystore import Hardware_KeyStore
from ..hw_wallet import HW_PluginBase
from electrum.util import print_error, to_string, UserCancelled, UserFacingException
from electrum.base_wizard import ScriptTypeNotSupported, HWD_SETUP_NEW_WALLET
import time
import hid
import json
import math
import binascii
import struct
import hashlib
import requests
import base64
import os
import sys
DIGIBOX = True
except ImportError as e:
DIGIBOX = False
# ----------------------------------------------------------------------------------
# USB HID interface
#
def to_hexstr(s):
return binascii.hexlify(s).decode('ascii')
class DigitalBitbox_Client():
def __init__(self, plugin, hidDevice):
self.plugin = plugin
self.dbb_hid = hidDevice
self.opened = True
self.password = None
self.isInitialized = False
self.setupRunning = False
self.usbReportSize = 64 # firmware > v2.0.0
def close(self):
if self.opened:
try:
self.dbb_hid.close()
except:
pass
self.opened = False
def timeout(self, cutoff):
pass
def label(self):
return " "
def is_pairable(self):
return True
def is_initialized(self):
return self.dbb_has_password()
def is_paired(self):
return self.password is not None
def has_usable_connection_with_device(self):
try:
self.dbb_has_password()
except BaseException:
return False
return True
def _get_xpub(self, bip32_path):
if self.check_device_dialog():
return self.hid_send_encrypt(('{"xpub": "%s"}' % bip32_path).encode('utf8'))
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:
_, depth, fingerprint, child_number, c, cK = deserialize_xpub(xpub, net=constants.BitcoinMainnet)
xpub = serialize_xpub(xtype, c, cK, depth, fingerprint, child_number)
return xpub
else:
raise Exception('no reply')
def dbb_has_password(self):
reply = self.hid_send_plain(b'{"ping":""}')
if 'ping' not in reply:
raise UserFacingException(_('Device communication error. Please unplug and replug your Digital Bitbox.'))
if reply['ping'] == 'password':
return True
return False
def stretch_key(self, key):
import hmac
return to_hexstr(hashlib.pbkdf2_hmac('sha512', key.encode('utf-8'), b'Digital Bitbox', iterations = 20480))
def backup_password_dialog(self):
msg = _("Enter the password used when the backup was created:")
while True:
password = self.handler.get_passphrase(msg, False)
if password is None:
return None
if len(password) < 4:
msg = _("Password must have at least 4 characters.") \
+ "\n\n" + _("Enter password:")
elif len(password) > 64:
msg = _("Password must have less than 64 characters.") \
+ "\n\n" + _("Enter password:")
else:
return password.encode('utf8')
def password_dialog(self, msg):
while True:
password = self.handler.get_passphrase(msg, False)
if password is None:
return False
if len(password) < 4:
msg = _("Password must have at least 4 characters.") + \
"\n\n" + _("Enter password:")
elif len(password) > 64:
msg = _("Password must have less than 64 characters.") + \
"\n\n" + _("Enter password:")
else:
self.password = password.encode('utf8')
return True
def check_device_dialog(self):
# Set password if fresh device
if self.password is None and not self.dbb_has_password():
if not self.setupRunning:
return False # A fresh device cannot connect to an existing wallet
msg = _("An uninitialized Digital Bitbox is detected.") + " " + \
_("Enter a new password below.") + "\n\n" + \
_("REMEMBER THE PASSWORD!") + "\n\n" + \
_("You cannot access your coins or a backup without the password.") + "\n" + \
_("A backup is saved automatically when generating a new wallet.")
if self.password_dialog(msg):
reply = self.hid_send_plain(b'{"password":"' + self.password + b'"}')
else:
return False
# Get password from user if not yet set
msg = _("Enter your Digital Bitbox password:")
while self.password is None:
if not self.password_dialog(msg):
raise UserCancelled()
reply = self.hid_send_encrypt(b'{"led":"blink"}')
if 'error' in reply:
self.password = None
if reply['error']['code'] == 109:
msg = _("Incorrect password entered.") + "\n\n" + \
reply['error']['message'] + "\n\n" + \
_("Enter your Digital Bitbox password:")
else:
# Should never occur
msg = _("Unexpected error occurred.") + "\n\n" + \
reply['error']['message'] + "\n\n" + \
_("Enter your Digital Bitbox password:")
# Initialize device if not yet initialized
if not self.setupRunning:
self.isInitialized = True # Wallet exists. Electrum code later checks if the device matches the wallet
elif not self.isInitialized:
reply = self.hid_send_encrypt(b'{"device":"info"}')
if reply['device']['id'] != "":
self.recover_or_erase_dialog() # Already seeded
else:
self.seed_device_dialog() # Seed if not initialized
self.mobile_pairing_dialog()
return self.isInitialized
def recover_or_erase_dialog(self):
msg = _("The Digital Bitbox is already seeded. Choose an option:") + "\n"
choices = [
(_("Create a wallet using the current seed")),
(_("Load a wallet from the micro SD card (the current seed is overwritten)")),
(_("Erase the Digital Bitbox"))
]
try:
reply = self.handler.win.query_choice(msg, choices)
except Exception:
return # Back button pushed
if reply == 2:
self.dbb_erase()
elif reply == 1:
if not self.dbb_load_backup():
return
else:
if self.hid_send_encrypt(b'{"device":"info"}')['device']['lock']:
raise UserFacingException(_("Full 2FA enabled. This is not supported yet."))
# Use existing seed
self.isInitialized = True
def seed_device_dialog(self):
msg = _("Choose how to initialize your Digital Bitbox:") + "\n"
choices = [
(_("Generate a new random wallet")),
(_("Load a wallet from the micro SD card"))
]
try:
reply = self.handler.win.query_choice(msg, choices)
except Exception:
return # Back button pushed
if reply == 0:
self.dbb_generate_wallet()
else:
if not self.dbb_load_backup(show_msg=False):
return
self.isInitialized = True
def mobile_pairing_dialog(self):
dbb_user_dir = None
if sys.platform == 'darwin':
dbb_user_dir = os.path.join(os.environ.get("HOME", ""), "Library", "Application Support", "DBB")
elif sys.platform == 'win32':
dbb_user_dir = os.path.join(os.environ["APPDATA"], "DBB")
else:
dbb_user_dir = os.path.join(os.environ["HOME"], ".dbb")
if not dbb_user_dir:
return
try:
# Python 3.5+
jsonDecodeError = json.JSONDecodeError
except AttributeError:
jsonDecodeError = ValueError
try:
with open(os.path.join(dbb_user_dir, "config.dat")) as f:
dbb_config = json.load(f)
except (FileNotFoundError, jsonDecodeError):
return
if 'encryptionprivkey' not in dbb_config or 'comserverchannelid' not in dbb_config:
return
choices = [
_('Do not pair'),
_('Import pairing from the Digital Bitbox desktop app'),
]
try:
reply = self.handler.win.query_choice(_('Mobile pairing options'), choices)
except Exception:
return # Back button pushed
if reply == 0:
if self.plugin.is_mobile_paired():
del self.plugin.digitalbitbox_config['encryptionprivkey']
del self.plugin.digitalbitbox_config['comserverchannelid']
elif reply == 1:
# import pairing from dbb app
self.plugin.digitalbitbox_config['encryptionprivkey'] = dbb_config['encryptionprivkey']
self.plugin.digitalbitbox_config['comserverchannelid'] = dbb_config['comserverchannelid']
self.plugin.config.set_key('digitalbitbox', self.plugin.digitalbitbox_config)
def dbb_generate_wallet(self):
key = self.stretch_key(self.password)
filename = ("Electrum-" + time.strftime("%Y-%m-%d-%H-%M-%S") + ".pdf")
msg = ('{"seed":{"source": "create", "key": "%s", "filename": "%s", "entropy": "%s"}}' % (key, filename, 'Digital Bitbox Electrum Plugin')).encode('utf8')
reply = self.hid_send_encrypt(msg)
if 'error' in reply:
raise UserFacingException(reply['error']['message'])
def dbb_erase(self):
self.handler.show_message(_("Are you sure you want to erase the Digital Bitbox?") + "\n\n" +
_("To continue, touch the Digital Bitbox's light for 3 seconds.") + "\n\n" +
_("To cancel, briefly touch the light or wait for the timeout."))
hid_reply = self.hid_send_encrypt(b'{"reset":"__ERASE__"}')
self.handler.finished()
if 'error' in hid_reply:
raise UserFacingException(hid_reply['error']['message'])
else:
self.password = None
raise UserFacingException('Device erased')
def dbb_load_backup(self, show_msg=True):
backups = self.hid_send_encrypt(b'{"backup":"list"}')
if 'error' in backups:
raise UserFacingException(backups['error']['message'])
try:
f = self.handler.win.query_choice(_("Choose a backup file:"), backups['backup'])
except Exception:
return False # Back button pushed
key = self.backup_password_dialog()
if key is None:
raise Exception('Canceled by user')
key = self.stretch_key(key)
if show_msg:
self.handler.show_message(_("Loading backup...") + "\n\n" +
_("To continue, touch the Digital Bitbox's light for 3 seconds.") + "\n\n" +
_("To cancel, briefly touch the light or wait for the timeout."))
msg = ('{"seed":{"source": "backup", "key": "%s", "filename": "%s"}}' % (key, backups['backup'][f])).encode('utf8')
hid_reply = self.hid_send_encrypt(msg)
self.handler.finished()
if 'error' in hid_reply:
raise UserFacingException(hid_reply['error']['message'])
return True
def hid_send_frame(self, data):
HWW_CID = 0xFF000000
HWW_CMD = 0x80 + 0x40 + 0x01
data_len = len(data)
seq = 0;
idx = 0;
write = []
while idx < data_len:
if idx == 0:
# INIT frame
write = data[idx : idx + min(data_len, self.usbReportSize - 7)]
self.dbb_hid.write(b'\0' + struct.pack(">IBH", HWW_CID, HWW_CMD, data_len & 0xFFFF) + write + b'\xEE' * (self.usbReportSize - 7 - len(write)))
else:
# CONT frame
write = data[idx : idx + min(data_len, self.usbReportSize - 5)]
self.dbb_hid.write(b'\0' + struct.pack(">IB", HWW_CID, seq) + write + b'\xEE' * (self.usbReportSize - 5 - len(write)))
seq += 1
idx += len(write)
def hid_read_frame(self):
# INIT response
read = bytearray(self.dbb_hid.read(self.usbReportSize))
cid = ((read[0] * 256 + read[1]) * 256 + read[2]) * 256 + read[3]
cmd = read[4]
data_len = read[5] * 256 + read[6]
data = read[7:]
idx = len(read) - 7;
while idx < data_len:
# CONT response
read = bytearray(self.dbb_hid.read(self.usbReportSize))
data += read[5:]
idx += len(read) - 5
return data
def hid_send_plain(self, msg):
reply = ""
try:
serial_number = self.dbb_hid.get_serial_number_string()
if "v2.0." in serial_number or "v1." in serial_number:
hidBufSize = 4096
self.dbb_hid.write('\0' + msg + '\0' * (hidBufSize - len(msg)))
r = bytearray()
while len(r) < hidBufSize:
r += bytearray(self.dbb_hid.read(hidBufSize))
else:
self.hid_send_frame(msg)
r = self.hid_read_frame()
r = r.rstrip(b' \t\r\n\0')
r = r.replace(b"\0", b'')
r = to_string(r, 'utf8')
reply = json.loads(r)
except Exception as e:
print_error('Exception caught ' + repr(e))
return reply
def hid_send_encrypt(self, msg):
reply = ""
try:
secret = sha256d(self.password)
msg = EncodeAES(secret, msg)
reply = self.hid_send_plain(msg)
if 'ciphertext' in reply:
reply = DecodeAES(secret, ''.join(reply["ciphertext"]))
reply = to_string(reply, 'utf8')
reply = json.loads(reply)
if 'error' in reply:
self.password = None
except Exception as e:
print_error('Exception caught ' + repr(e))
return reply
# ----------------------------------------------------------------------------------
#
#
class DigitalBitbox_KeyStore(Hardware_KeyStore):
hw_type = 'digitalbitbox'
device = 'DigitalBitbox'
def __init__(self, d):
Hardware_KeyStore.__init__(self, d)
self.force_watching_only = False
self.maxInputs = 14 # maximum inputs per single sign command
def get_derivation(self):
return str(self.derivation)
def is_p2pkh(self):
return self.derivation.startswith("m/44'/")
def give_error(self, message, clear_client = False):
if clear_client:
self.client = None
raise Exception(message)
def decrypt_message(self, pubkey, message, password):
raise RuntimeError(_('Encryption and decryption are currently not supported for {}').format(self.device))
def sign_message(self, sequence, message, password):
sig = None
try:
message = message.encode('utf8')
inputPath = self.get_derivation() + "/%d/%d" % sequence
msg_hash = sha256d(msg_magic(message))
inputHash = to_hexstr(msg_hash)
hasharray = []
hasharray.append({'hash': inputHash, 'keypath': inputPath})
hasharray = json.dumps(hasharray)
msg = ('{"sign":{"meta":"sign message", "data":%s}}' % hasharray).encode('utf8')
dbb_client = self.plugin.get_client(self)
if not dbb_client.is_paired():
raise Exception(_("Could not sign message."))
reply = dbb_client.hid_send_encrypt(msg)
self.handler.show_message(_("Signing message ...") + "\n\n" +
_("To continue, touch the Digital Bitbox's blinking light for 3 seconds.") + "\n\n" +
_("To cancel, briefly touch the blinking light or wait for the timeout."))
reply = dbb_client.hid_send_encrypt(msg) # Send twice, first returns an echo for smart verification (not implemented)
self.handler.finished()
if 'error' in reply:
raise Exception(reply['error']['message'])
if 'sign' not in reply:
raise Exception(_("Could not sign message."))
if 'recid' in reply['sign'][0]:
# firmware > v2.1.1
sig_string = binascii.unhexlify(reply['sign'][0]['sig'])
recid = int(reply['sign'][0]['recid'], 16)
sig = ecc.construct_sig65(sig_string, recid, True)
pubkey, compressed = ecc.ECPubkey.from_signature65(sig, msg_hash)
addr = public_key_to_p2pkh(pubkey.get_public_key_bytes(compressed=compressed))
if ecc.verify_message_with_address(addr, sig, message) is False:
raise Exception(_("Could not sign message"))
elif 'pubkey' in reply['sign'][0]:
# firmware <= v2.1.1
for recid in range(4):
sig_string = binascii.unhexlify(reply['sign'][0]['sig'])
sig = ecc.construct_sig65(sig_string, recid, True)
try:
addr = public_key_to_p2pkh(binascii.unhexlify(reply['sign'][0]['pubkey']))
if ecc.verify_message_with_address(addr, sig, message):
break
except Exception:
continue
else:
raise Exception(_("Could not sign message"))
except BaseException as e:
self.give_error(e)
return sig
def sign_transaction(self, tx, password):
if tx.is_complete():
return
try:
p2pkhTransaction = True
derivations = self.get_tx_derivations(tx)
inputhasharray = []
hasharray = []
pubkeyarray = []
# Build hasharray from inputs
for i, txin in enumerate(tx.inputs()):
if txin['type'] == 'coinbase':
self.give_error("Coinbase not supported") # should never happen
if txin['type'] != 'p2pkh':
p2pkhTransaction = False
for x_pubkey in txin['x_pubkeys']:
if x_pubkey in derivations:
index = derivations.get(x_pubkey)
inputPath = "%s/%d/%d" % (self.get_derivation(), index[0], index[1])
inputHash = sha256d(binascii.unhexlify(tx.serialize_preimage(i)))
hasharray_i = {'hash': to_hexstr(inputHash), 'keypath': inputPath}
hasharray.append(hasharray_i)
inputhasharray.append(inputHash)
break
else:
self.give_error("No matching x_key for sign_transaction") # should never happen
# Build pubkeyarray from outputs
for o in tx.outputs():
assert o.type == TYPE_ADDRESS
info = tx.output_info.get(o.address)
if info is not None:
index = info.address_index
changePath = self.get_derivation() + "/%d/%d" % index
changePubkey = self.derive_pubkey(index[0], index[1])
pubkeyarray_i = {'pubkey': changePubkey, 'keypath': changePath}
pubkeyarray.append(pubkeyarray_i)
# Special serialization of the unsigned transaction for
# the mobile verification app.
# At the moment, verification only works for p2pkh transactions.
if p2pkhTransaction:
class CustomTXSerialization(Transaction):
@classmethod
def input_script(self, txin, estimate_size=False):
if txin['type'] == 'p2pkh':
return Transaction.get_preimage_script(txin)
if txin['type'] == 'p2sh':
# Multisig verification has partial support, but is disabled. This is the
# expected serialization though, so we leave it here until we activate it.
return '00' + push_script(Transaction.get_preimage_script(txin))
raise Exception("unsupported type %s" % txin['type'])
tx_dbb_serialized = CustomTXSerialization(tx.serialize()).serialize_to_network()
else:
# We only need this for the signing echo / verification.
tx_dbb_serialized = None
# Build sign command
dbb_signatures = []
steps = math.ceil(1.0 * len(hasharray) / self.maxInputs)
for step in range(int(steps)):
hashes = hasharray[step * self.maxInputs : (step + 1) * self.maxInputs]
msg = {
"sign": {
"data": hashes,
"checkpub": pubkeyarray,
},
}
if tx_dbb_serialized is not None:
msg["sign"]["meta"] = to_hexstr(sha256d(tx_dbb_serialized))
msg = json.dumps(msg).encode('ascii')
dbb_client = self.plugin.get_client(self)
if not dbb_client.is_paired():
raise Exception("Could not sign transaction.")
reply = dbb_client.hid_send_encrypt(msg)
if 'error' in reply:
raise Exception(reply['error']['message'])
if 'echo' not in reply:
raise Exception("Could not sign transaction.")
if self.plugin.is_mobile_paired() and tx_dbb_serialized is not None:
reply['tx'] = tx_dbb_serialized
self.plugin.comserver_post_notification(reply)
if steps > 1:
self.handler.show_message(_("Signing large transaction. Please be patient ...") + "\n\n" +
_("To continue, touch the Digital Bitbox's blinking light for 3 seconds.") + " " +
_("(Touch {} of {})").format((step + 1), steps) + "\n\n" +
_("To cancel, briefly touch the blinking light or wait for the timeout.") + "\n\n")
else:
self.handler.show_message(_("Signing transaction...") + "\n\n" +
_("To continue, touch the Digital Bitbox's blinking light for 3 seconds.") + "\n\n" +
_("To cancel, briefly touch the blinking light or wait for the timeout."))
# Send twice, first returns an echo for smart verification
reply = dbb_client.hid_send_encrypt(msg)
self.handler.finished()
if 'error' in reply:
if reply["error"].get('code') in (600, 601):
# aborted via LED short touch or timeout
raise UserCancelled()
raise Exception(reply['error']['message'])
if 'sign' not in reply:
raise Exception("Could not sign transaction.")
dbb_signatures.extend(reply['sign'])
# Fill signatures
if len(dbb_signatures) != len(tx.inputs()):
raise Exception("Incorrect number of transactions signed.") # Should never occur
for i, txin in enumerate(tx.inputs()):
num = txin['num_sig']
for pubkey in txin['pubkeys']:
signatures = list(filter(None, txin['signatures']))
if len(signatures) == num:
break # txin is complete
ii = txin['pubkeys'].index(pubkey)
signed = dbb_signatures[i]
if 'recid' in signed:
# firmware > v2.1.1
recid = int(signed['recid'], 16)
s = binascii.unhexlify(signed['sig'])
h = inputhasharray[i]
pk = ecc.ECPubkey.from_sig_string(s, recid, h)
pk = pk.get_public_key_hex(compressed=True)
elif 'pubkey' in signed:
# firmware <= v2.1.1
pk = signed['pubkey']
if pk != pubkey:
continue
sig_r = int(signed['sig'][:64], 16)
sig_s = int(signed['sig'][64:], 16)
sig = ecc.der_sig_from_r_and_s(sig_r, sig_s)
sig = to_hexstr(sig) + '01'
tx.add_signature_to_txin(i, ii, sig)
except UserCancelled:
raise
except BaseException as e:
self.give_error(e, True)
else:
print_error("Transaction is_complete", tx.is_complete())
tx.raw = tx.serialize()
class DigitalBitboxPlugin(HW_PluginBase):
libraries_available = DIGIBOX
keystore_class = DigitalBitbox_KeyStore
client = None
DEVICE_IDS = [
(0x03eb, 0x2402) # Digital Bitbox
]
SUPPORTED_XTYPES = ('standard', 'p2wpkh-p2sh', 'p2wpkh', 'p2wsh-p2sh', 'p2wsh')
def __init__(self, parent, config, name):
HW_PluginBase.__init__(self, parent, config, name)
if self.libraries_available:
self.device_manager().register_devices(self.DEVICE_IDS)
self.digitalbitbox_config = self.config.get('digitalbitbox', {})
def get_dbb_device(self, device):
dev = hid.device()
dev.open_path(device.path)
return dev
def create_client(self, device, handler):
if device.interface_number == 0 or device.usage_page == 0xffff:
if handler:
self.handler = handler
client = self.get_dbb_device(device)
if client is not None:
client = DigitalBitbox_Client(self, client)
return client
else:
return None
def setup_device(self, device_info, wizard, purpose):
devmgr = self.device_manager()
device_id = device_info.device.id_
client = devmgr.client_by_id(device_id)
if client is None:
raise Exception(_('Failed to create a client for this device.') + '\n' +
_('Make sure it is in the correct state.'))
client.handler = self.create_handler(wizard)
if purpose == HWD_SETUP_NEW_WALLET:
client.setupRunning = True
client.get_xpub("m/44'/0'", 'standard')
def is_mobile_paired(self):
return 'encryptionprivkey' in self.digitalbitbox_config
def comserver_post_notification(self, payload):
assert self.is_mobile_paired(), "unexpected mobile pairing error"
url = 'https://digitalbitbox.com/smartverification/index.php'
key_s = base64.b64decode(self.digitalbitbox_config['encryptionprivkey'])
args = 'c=data&s=0&dt=0&uuid=%s&pl=%s' % (
self.digitalbitbox_config['comserverchannelid'],
EncodeAES(key_s, json.dumps(payload).encode('ascii')).decode('ascii'),
)
try:
requests.post(url, args)
except Exception as e:
self.handler.show_error(str(e))
def get_xpub(self, device_id, derivation, xtype, wizard):
if xtype not in self.SUPPORTED_XTYPES:
raise ScriptTypeNotSupported(_('This type of script is not supported with {}.').format(self.device))
devmgr = self.device_manager()
client = devmgr.client_by_id(device_id)
client.handler = self.create_handler(wizard)
client.check_device_dialog()
xpub = client.get_xpub(derivation, xtype)
return xpub
def get_client(self, keystore, force_pair=True):
devmgr = self.device_manager()
handler = keystore.handler
with devmgr.hid_lock:
client = devmgr.client_for_keystore(self, handler, keystore, force_pair)
if client is not None:
client.check_device_dialog()
return client
def show_address(self, wallet, address, keystore=None):
if keystore is None:
keystore = wallet.get_keystore()
if not self.show_address_helper(wallet, address, keystore):
return
if type(wallet) is not Standard_Wallet:
keystore.handler.show_error(_('This function is only available for standard wallets when using {}.').format(self.device))
return
if not self.is_mobile_paired():
keystore.handler.show_error(_('This function is only available after pairing your {} with a mobile device.').format(self.device))
return
if not keystore.is_p2pkh():
keystore.handler.show_error(_('This function is only available for p2pkh keystores when using {}.').format(self.device))
return
change, index = wallet.get_address_index(address)
keypath = '%s/%d/%d' % (keystore.derivation, change, index)
xpub = self.get_client(keystore)._get_xpub(keypath)
verify_request_payload = {
"type": 'p2pkh',
"echo": xpub['echo'],
}
self.comserver_post_notification(verify_request_payload)