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734 lines
30 KiB
734 lines
30 KiB
#!/usr/bin/env python |
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# |
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# Electrum - Lightweight Bitcoin Client |
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# Copyright (C) 2015 Thomas Voegtlin |
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# |
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# Permission is hereby granted, free of charge, to any person |
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# obtaining a copy of this software and associated documentation files |
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# (the "Software"), to deal in the Software without restriction, |
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# including without limitation the rights to use, copy, modify, merge, |
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# publish, distribute, sublicense, and/or sell copies of the Software, |
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# and to permit persons to whom the Software is furnished to do so, |
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# subject to the following conditions: |
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# |
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# The above copyright notice and this permission notice shall be |
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# included in all copies or substantial portions of the Software. |
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# |
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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# SOFTWARE. |
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import asyncio |
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import socket |
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import json |
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import base64 |
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import time |
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import hashlib |
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from collections import defaultdict |
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from typing import Dict |
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|
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from urllib.parse import urljoin |
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from urllib.parse import quote |
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from aiohttp import ClientResponse |
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|
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from electrum import ecc, constants, keystore, version, bip32, bitcoin |
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from electrum.bitcoin import TYPE_ADDRESS, is_new_seed, seed_type, is_any_2fa_seed_type |
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from electrum.bip32 import (deserialize_xpub, deserialize_xprv, bip32_private_key, CKD_pub, |
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serialize_xpub, bip32_root, bip32_private_derivation, xpub_type) |
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from electrum.crypto import sha256 |
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from electrum.transaction import TxOutput |
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from electrum.mnemonic import Mnemonic |
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from electrum.wallet import Multisig_Wallet, Deterministic_Wallet |
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from electrum.i18n import _ |
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from electrum.plugin import BasePlugin, hook |
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from electrum.util import NotEnoughFunds, UserFacingException |
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from electrum.storage import STO_EV_USER_PW |
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from electrum.network import Network |
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|
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def get_signing_xpub(xtype): |
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if not constants.net.TESTNET: |
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xpub = "xpub661MyMwAqRbcGnMkaTx2594P9EDuiEqMq25PM2aeG6UmwzaohgA6uDmNsvSUV8ubqwA3Wpste1hg69XHgjUuCD5HLcEp2QPzyV1HMrPppsL" |
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else: |
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xpub = "tpubD6NzVbkrYhZ4XdmyJQcCPjQfg6RXVUzGFhPjZ7uvRC8JLcS7Hw1i7UTpyhp9grHpak4TyK2hzBJrujDVLXQ6qB5tNpVx9rC6ixijUXadnmY" |
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if xtype not in ('standard', 'p2wsh'): |
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raise NotImplementedError('xtype: {}'.format(xtype)) |
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if xtype == 'standard': |
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return xpub |
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_, depth, fingerprint, child_number, c, cK = bip32.deserialize_xpub(xpub) |
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xpub = bip32.serialize_xpub(xtype, c, cK, depth, fingerprint, child_number) |
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return xpub |
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|
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def get_billing_xpub(): |
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if constants.net.TESTNET: |
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return "tpubD6NzVbkrYhZ4X11EJFTJujsYbUmVASAYY7gXsEt4sL97AMBdypiH1E9ZVTpdXXEy3Kj9Eqd1UkxdGtvDt5z23DKsh6211CfNJo8bLLyem5r" |
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else: |
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return "xpub6DTBdtBB8qUmH5c77v8qVGVoYk7WjJNpGvutqjLasNG1mbux6KsojaLrYf2sRhXAVU4NaFuHhbD9SvVPRt1MB1MaMooRuhHcAZH1yhQ1qDU" |
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DISCLAIMER = [ |
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_("Two-factor authentication is a service provided by TrustedCoin. " |
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"It uses a multi-signature wallet, where you own 2 of 3 keys. " |
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"The third key is stored on a remote server that signs transactions on " |
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"your behalf. To use this service, you will need a smartphone with " |
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"Google Authenticator installed."), |
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_("A small fee will be charged on each transaction that uses the " |
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"remote server. You may check and modify your billing preferences " |
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"once the installation is complete."), |
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_("Note that your coins are not locked in this service. You may withdraw " |
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"your funds at any time and at no cost, without the remote server, by " |
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"using the 'restore wallet' option with your wallet seed."), |
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_("The next step will generate the seed of your wallet. This seed will " |
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"NOT be saved in your computer, and it must be stored on paper. " |
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"To be safe from malware, you may want to do this on an offline " |
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"computer, and move your wallet later to an online computer."), |
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] |
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|
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KIVY_DISCLAIMER = [ |
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_("Two-factor authentication is a service provided by TrustedCoin. " |
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"To use it, you must have a separate device with Google Authenticator."), |
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_("This service uses a multi-signature wallet, where you own 2 of 3 keys. " |
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"The third key is stored on a remote server that signs transactions on " |
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"your behalf. A small fee will be charged on each transaction that uses the " |
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"remote server."), |
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_("Note that your coins are not locked in this service. You may withdraw " |
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"your funds at any time and at no cost, without the remote server, by " |
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"using the 'restore wallet' option with your wallet seed."), |
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] |
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RESTORE_MSG = _("Enter the seed for your 2-factor wallet:") |
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|
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class TrustedCoinException(Exception): |
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def __init__(self, message, status_code=0): |
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Exception.__init__(self, message) |
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self.status_code = status_code |
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|
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class ErrorConnectingServer(Exception): |
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pass |
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|
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class TrustedCoinCosignerClient(object): |
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def __init__(self, user_agent=None, base_url='https://api.trustedcoin.com/2/'): |
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self.base_url = base_url |
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self.debug = False |
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self.user_agent = user_agent |
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|
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async def handle_response(self, resp: ClientResponse): |
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if resp.status != 200: |
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try: |
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r = await resp.json() |
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message = r['message'] |
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except: |
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message = await resp.text() |
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raise TrustedCoinException(message, resp.status) |
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try: |
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return await resp.json() |
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except: |
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return await resp.text() |
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|
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def send_request(self, method, relative_url, data=None): |
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network = Network.get_instance() |
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if not network: |
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raise ErrorConnectingServer('You are offline.') |
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url = urljoin(self.base_url, relative_url) |
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if self.debug: |
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print('%s %s %s' % (method, url, data)) |
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headers = {} |
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if self.user_agent: |
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headers['user-agent'] = self.user_agent |
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try: |
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if method == 'get': |
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return Network.send_http_on_proxy(method, url, params=data, headers=headers, on_finish=self.handle_response) |
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elif method == 'post': |
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return Network.send_http_on_proxy(method, url, json=data, headers=headers, on_finish=self.handle_response) |
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else: |
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assert False |
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except TrustedCoinException: |
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raise |
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except Exception as e: |
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raise ErrorConnectingServer(e) |
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|
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def get_terms_of_service(self, billing_plan='electrum-per-tx-otp'): |
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""" |
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Returns the TOS for the given billing plan as a plain/text unicode string. |
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:param billing_plan: the plan to return the terms for |
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""" |
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payload = {'billing_plan': billing_plan} |
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return self.send_request('get', 'tos', payload) |
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|
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def create(self, xpubkey1, xpubkey2, email, billing_plan='electrum-per-tx-otp'): |
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""" |
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Creates a new cosigner resource. |
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:param xpubkey1: a bip32 extended public key (customarily the hot key) |
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:param xpubkey2: a bip32 extended public key (customarily the cold key) |
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:param email: a contact email |
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:param billing_plan: the billing plan for the cosigner |
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""" |
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payload = { |
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'email': email, |
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'xpubkey1': xpubkey1, |
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'xpubkey2': xpubkey2, |
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'billing_plan': billing_plan, |
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} |
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return self.send_request('post', 'cosigner', payload) |
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|
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def auth(self, id, otp): |
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""" |
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Attempt to authenticate for a particular cosigner. |
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:param id: the id of the cosigner |
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:param otp: the one time password |
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""" |
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payload = {'otp': otp} |
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return self.send_request('post', 'cosigner/%s/auth' % quote(id), payload) |
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|
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def get(self, id): |
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""" Get billing info """ |
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return self.send_request('get', 'cosigner/%s' % quote(id)) |
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|
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def get_challenge(self, id): |
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""" Get challenge to reset Google Auth secret """ |
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return self.send_request('get', 'cosigner/%s/otp_secret' % quote(id)) |
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|
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def reset_auth(self, id, challenge, signatures): |
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""" Reset Google Auth secret """ |
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payload = {'challenge':challenge, 'signatures':signatures} |
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return self.send_request('post', 'cosigner/%s/otp_secret' % quote(id), payload) |
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|
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def sign(self, id, transaction, otp): |
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""" |
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Attempt to authenticate for a particular cosigner. |
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:param id: the id of the cosigner |
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:param transaction: the hex encoded [partially signed] compact transaction to sign |
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:param otp: the one time password |
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""" |
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payload = { |
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'otp': otp, |
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'transaction': transaction |
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} |
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return self.send_request('post', 'cosigner/%s/sign' % quote(id), payload) |
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|
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def transfer_credit(self, id, recipient, otp, signature_callback): |
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""" |
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Transfer a cosigner's credits to another cosigner. |
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:param id: the id of the sending cosigner |
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:param recipient: the id of the recipient cosigner |
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:param otp: the one time password (of the sender) |
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:param signature_callback: a callback that signs a text message using xpubkey1/0/0 returning a compact sig |
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""" |
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payload = { |
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'otp': otp, |
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'recipient': recipient, |
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'timestamp': int(time.time()), |
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|
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} |
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relative_url = 'cosigner/%s/transfer' % quote(id) |
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full_url = urljoin(self.base_url, relative_url) |
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headers = { |
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'x-signature': signature_callback(full_url + '\n' + json.dumps(payload)) |
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} |
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return self.send_request('post', relative_url, payload, headers) |
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server = TrustedCoinCosignerClient(user_agent="Electrum/" + version.ELECTRUM_VERSION) |
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|
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class Wallet_2fa(Multisig_Wallet): |
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|
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wallet_type = '2fa' |
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|
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def __init__(self, storage): |
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self.m, self.n = 2, 3 |
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Deterministic_Wallet.__init__(self, storage) |
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self.is_billing = False |
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self.billing_info = None |
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self._load_billing_addresses() |
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|
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def _load_billing_addresses(self): |
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billing_addresses = { |
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'legacy': self.storage.get('trustedcoin_billing_addresses', {}), |
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'segwit': self.storage.get('trustedcoin_billing_addresses_segwit', {}) |
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} |
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self._billing_addresses = {} # type: Dict[str, Dict[int, str]] # addr_type -> index -> addr |
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self._billing_addresses_set = set() # set of addrs |
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for addr_type, d in list(billing_addresses.items()): |
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self._billing_addresses[addr_type] = {} |
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# convert keys from str to int |
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for index, addr in d.items(): |
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self._billing_addresses[addr_type][int(index)] = addr |
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self._billing_addresses_set.add(addr) |
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|
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def can_sign_without_server(self): |
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return not self.keystores['x2/'].is_watching_only() |
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|
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def get_user_id(self): |
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return get_user_id(self.storage) |
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|
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def min_prepay(self): |
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return min(self.price_per_tx.keys()) |
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|
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def num_prepay(self, config): |
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default = self.min_prepay() |
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n = config.get('trustedcoin_prepay', default) |
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if n not in self.price_per_tx: |
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n = default |
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return n |
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|
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def extra_fee(self, config): |
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if self.can_sign_without_server(): |
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return 0 |
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if self.billing_info is None: |
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self.plugin.start_request_thread(self) |
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return 0 |
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if self.billing_info.get('tx_remaining'): |
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return 0 |
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if self.is_billing: |
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return 0 |
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n = self.num_prepay(config) |
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price = int(self.price_per_tx[n]) |
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if price > 100000 * n: |
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raise Exception('too high trustedcoin fee ({} for {} txns)'.format(price, n)) |
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return price |
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|
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def make_unsigned_transaction(self, coins, outputs, config, fixed_fee=None, |
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change_addr=None, is_sweep=False): |
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mk_tx = lambda o: Multisig_Wallet.make_unsigned_transaction( |
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self, coins, o, config, fixed_fee, change_addr) |
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fee = self.extra_fee(config) if not is_sweep else 0 |
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if fee: |
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address = self.billing_info['billing_address_segwit'] |
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fee_output = TxOutput(TYPE_ADDRESS, address, fee) |
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try: |
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tx = mk_tx(outputs + [fee_output]) |
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except NotEnoughFunds: |
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# TrustedCoin won't charge if the total inputs is |
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# lower than their fee |
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tx = mk_tx(outputs) |
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if tx.input_value() >= fee: |
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raise |
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self.print_error("not charging for this tx") |
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else: |
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tx = mk_tx(outputs) |
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return tx |
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|
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def on_otp(self, tx, otp): |
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if not otp: |
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self.print_error("sign_transaction: no auth code") |
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return |
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otp = int(otp) |
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long_user_id, short_id = self.get_user_id() |
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raw_tx = tx.serialize() |
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try: |
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r = server.sign(short_id, raw_tx, otp) |
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except TrustedCoinException as e: |
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if e.status_code == 400: # invalid OTP |
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raise UserFacingException(_('Invalid one-time password.')) from e |
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else: |
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raise |
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if r: |
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raw_tx = r.get('transaction') |
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tx.update(raw_tx) |
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self.print_error("twofactor: is complete", tx.is_complete()) |
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# reset billing_info |
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self.billing_info = None |
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self.plugin.start_request_thread(self) |
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|
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def add_new_billing_address(self, billing_index: int, address: str, addr_type: str): |
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billing_addresses_of_this_type = self._billing_addresses[addr_type] |
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saved_addr = billing_addresses_of_this_type.get(billing_index) |
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if saved_addr is not None: |
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if saved_addr == address: |
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return # already saved this address |
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else: |
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raise Exception('trustedcoin billing address inconsistency.. ' |
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'for index {}, already saved {}, now got {}' |
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.format(billing_index, saved_addr, address)) |
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# do we have all prior indices? (are we synced?) |
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largest_index_we_have = max(billing_addresses_of_this_type) if billing_addresses_of_this_type else -1 |
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if largest_index_we_have + 1 < billing_index: # need to sync |
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for i in range(largest_index_we_have + 1, billing_index): |
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addr = make_billing_address(self, i, addr_type=addr_type) |
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billing_addresses_of_this_type[i] = addr |
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self._billing_addresses_set.add(addr) |
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# save this address; and persist to disk |
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billing_addresses_of_this_type[billing_index] = address |
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self._billing_addresses_set.add(address) |
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self._billing_addresses[addr_type] = billing_addresses_of_this_type |
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self.storage.put('trustedcoin_billing_addresses', self._billing_addresses['legacy']) |
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self.storage.put('trustedcoin_billing_addresses_segwit', self._billing_addresses['segwit']) |
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# FIXME this often runs in a daemon thread, where storage.write will fail |
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self.storage.write() |
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|
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def is_billing_address(self, addr: str) -> bool: |
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return addr in self._billing_addresses_set |
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|
|
|
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# Utility functions |
|
|
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def get_user_id(storage): |
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def make_long_id(xpub_hot, xpub_cold): |
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return sha256(''.join(sorted([xpub_hot, xpub_cold]))) |
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xpub1 = storage.get('x1/')['xpub'] |
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xpub2 = storage.get('x2/')['xpub'] |
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long_id = make_long_id(xpub1, xpub2) |
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short_id = hashlib.sha256(long_id).hexdigest() |
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return long_id, short_id |
|
|
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def make_xpub(xpub, s): |
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version, _, _, _, c, cK = deserialize_xpub(xpub) |
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cK2, c2 = bip32._CKD_pub(cK, c, s) |
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return serialize_xpub(version, c2, cK2) |
|
|
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def make_billing_address(wallet, num, addr_type): |
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long_id, short_id = wallet.get_user_id() |
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xpub = make_xpub(get_billing_xpub(), long_id) |
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version, _, _, _, c, cK = deserialize_xpub(xpub) |
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cK, c = CKD_pub(cK, c, num) |
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if addr_type == 'legacy': |
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return bitcoin.public_key_to_p2pkh(cK) |
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elif addr_type == 'segwit': |
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return bitcoin.public_key_to_p2wpkh(cK) |
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else: |
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raise ValueError(f'unexpected billing type: {addr_type}') |
|
|
|
|
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class TrustedCoinPlugin(BasePlugin): |
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wallet_class = Wallet_2fa |
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disclaimer_msg = DISCLAIMER |
|
|
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def __init__(self, parent, config, name): |
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BasePlugin.__init__(self, parent, config, name) |
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self.wallet_class.plugin = self |
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self.requesting = False |
|
|
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@staticmethod |
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def is_valid_seed(seed): |
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t = seed_type(seed) |
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return is_any_2fa_seed_type(t) |
|
|
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def is_available(self): |
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return True |
|
|
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def is_enabled(self): |
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return True |
|
|
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def can_user_disable(self): |
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return False |
|
|
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@hook |
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def tc_sign_wrapper(self, wallet, tx, on_success, on_failure): |
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if not isinstance(wallet, self.wallet_class): |
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return |
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if tx.is_complete(): |
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return |
|
if wallet.can_sign_without_server(): |
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return |
|
if not wallet.keystores['x3/'].get_tx_derivations(tx): |
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self.print_error("twofactor: xpub3 not needed") |
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return |
|
def wrapper(tx): |
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self.prompt_user_for_otp(wallet, tx, on_success, on_failure) |
|
return wrapper |
|
|
|
@hook |
|
def get_tx_extra_fee(self, wallet, tx): |
|
if type(wallet) != Wallet_2fa: |
|
return |
|
for o in tx.outputs(): |
|
if o.type == TYPE_ADDRESS and wallet.is_billing_address(o.address): |
|
return o.address, o.value |
|
|
|
def finish_requesting(func): |
|
def f(self, *args, **kwargs): |
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try: |
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return func(self, *args, **kwargs) |
|
finally: |
|
self.requesting = False |
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return f |
|
|
|
@finish_requesting |
|
def request_billing_info(self, wallet: 'Wallet_2fa'): |
|
if wallet.can_sign_without_server(): |
|
return |
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self.print_error("request billing info") |
|
try: |
|
billing_info = server.get(wallet.get_user_id()[1]) |
|
except ErrorConnectingServer as e: |
|
self.print_error('cannot connect to TrustedCoin server: {}'.format(repr(e))) |
|
return |
|
billing_index = billing_info['billing_index'] |
|
# add segwit billing address; this will be used for actual billing |
|
billing_address = make_billing_address(wallet, billing_index, addr_type='segwit') |
|
if billing_address != billing_info['billing_address_segwit']: |
|
raise Exception(f'unexpected trustedcoin billing address: ' |
|
f'calculated {billing_address}, received {billing_info["billing_address_segwit"]}') |
|
wallet.add_new_billing_address(billing_index, billing_address, addr_type='segwit') |
|
# also add legacy billing address; only used for detecting past payments in GUI |
|
billing_address = make_billing_address(wallet, billing_index, addr_type='legacy') |
|
wallet.add_new_billing_address(billing_index, billing_address, addr_type='legacy') |
|
|
|
wallet.billing_info = billing_info |
|
wallet.price_per_tx = dict(billing_info['price_per_tx']) |
|
wallet.price_per_tx.pop(1, None) |
|
return True |
|
|
|
def start_request_thread(self, wallet): |
|
from threading import Thread |
|
if self.requesting is False: |
|
self.requesting = True |
|
t = Thread(target=self.request_billing_info, args=(wallet,)) |
|
t.setDaemon(True) |
|
t.start() |
|
return t |
|
|
|
def make_seed(self, seed_type): |
|
if not is_any_2fa_seed_type(seed_type): |
|
raise BaseException('unexpected seed type: {}'.format(seed_type)) |
|
return Mnemonic('english').make_seed(seed_type=seed_type, num_bits=128) |
|
|
|
@hook |
|
def do_clear(self, window): |
|
window.wallet.is_billing = False |
|
|
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def show_disclaimer(self, wizard): |
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wizard.set_icon('trustedcoin-wizard.png') |
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wizard.stack = [] |
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wizard.confirm_dialog(title='Disclaimer', message='\n\n'.join(self.disclaimer_msg), run_next = lambda x: wizard.run('choose_seed')) |
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|
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def choose_seed(self, wizard): |
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title = _('Create or restore') |
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message = _('Do you want to create a new seed, or to restore a wallet using an existing seed?') |
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choices = [ |
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('choose_seed_type', _('Create a new seed')), |
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('restore_wallet', _('I already have a seed')), |
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] |
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wizard.choice_dialog(title=title, message=message, choices=choices, run_next=wizard.run) |
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|
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def choose_seed_type(self, wizard): |
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choices = [ |
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('create_2fa_segwit_seed', _('Segwit 2FA')), |
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('create_2fa_seed', _('Legacy 2FA')), |
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] |
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wizard.choose_seed_type(choices=choices) |
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|
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def create_2fa_seed(self, wizard): self.create_seed(wizard, '2fa') |
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def create_2fa_segwit_seed(self, wizard): self.create_seed(wizard, '2fa_segwit') |
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|
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def create_seed(self, wizard, seed_type): |
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seed = self.make_seed(seed_type) |
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f = lambda x: wizard.request_passphrase(seed, x) |
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wizard.show_seed_dialog(run_next=f, seed_text=seed) |
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|
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@classmethod |
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def get_xkeys(self, seed, t, passphrase, derivation): |
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assert is_any_2fa_seed_type(t) |
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xtype = 'standard' if t == '2fa' else 'p2wsh' |
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bip32_seed = Mnemonic.mnemonic_to_seed(seed, passphrase) |
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xprv, xpub = bip32_root(bip32_seed, xtype) |
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xprv, xpub = bip32_private_derivation(xprv, "m/", derivation) |
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return xprv, xpub |
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|
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@classmethod |
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def xkeys_from_seed(self, seed, passphrase): |
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t = seed_type(seed) |
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if not is_any_2fa_seed_type(t): |
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raise BaseException('unexpected seed type: {}'.format(t)) |
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words = seed.split() |
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n = len(words) |
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# old version use long seed phrases |
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if n >= 20: |
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# note: pre-2.7 2fa seeds were typically 24-25 words, however they |
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# could probabilistically be arbitrarily shorter due to a bug. (see #3611) |
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# the probability of it being < 20 words is about 2^(-(256+12-19*11)) = 2^(-59) |
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if passphrase != '': |
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raise Exception('old 2fa seed cannot have passphrase') |
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xprv1, xpub1 = self.get_xkeys(' '.join(words[0:12]), t, '', "m/") |
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xprv2, xpub2 = self.get_xkeys(' '.join(words[12:]), t, '', "m/") |
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elif not t == '2fa' or n == 12: |
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xprv1, xpub1 = self.get_xkeys(seed, t, passphrase, "m/0'/") |
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xprv2, xpub2 = self.get_xkeys(seed, t, passphrase, "m/1'/") |
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else: |
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raise Exception('unrecognized seed length: {} words'.format(n)) |
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return xprv1, xpub1, xprv2, xpub2 |
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|
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def create_keystore(self, wizard, seed, passphrase): |
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# this overloads the wizard's method |
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xprv1, xpub1, xprv2, xpub2 = self.xkeys_from_seed(seed, passphrase) |
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k1 = keystore.from_xprv(xprv1) |
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k2 = keystore.from_xpub(xpub2) |
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wizard.request_password(run_next=lambda pw, encrypt: self.on_password(wizard, pw, encrypt, k1, k2)) |
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|
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def on_password(self, wizard, password, encrypt_storage, k1, k2): |
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k1.update_password(None, password) |
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wizard.storage.set_keystore_encryption(bool(password)) |
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if encrypt_storage: |
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wizard.storage.set_password(password, enc_version=STO_EV_USER_PW) |
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wizard.storage.put('x1/', k1.dump()) |
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wizard.storage.put('x2/', k2.dump()) |
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wizard.storage.write() |
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self.go_online_dialog(wizard) |
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|
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def restore_wallet(self, wizard): |
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wizard.opt_bip39 = False |
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wizard.opt_ext = True |
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title = _("Restore two-factor Wallet") |
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f = lambda seed, is_bip39, is_ext: wizard.run('on_restore_seed', seed, is_ext) |
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wizard.restore_seed_dialog(run_next=f, test=self.is_valid_seed) |
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|
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def on_restore_seed(self, wizard, seed, is_ext): |
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f = lambda x: self.restore_choice(wizard, seed, x) |
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wizard.passphrase_dialog(run_next=f) if is_ext else f('') |
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|
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def restore_choice(self, wizard, seed, passphrase): |
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wizard.set_icon('trustedcoin-wizard.png') |
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wizard.stack = [] |
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title = _('Restore 2FA wallet') |
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msg = ' '.join([ |
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'You are going to restore a wallet protected with two-factor authentication.', |
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'Do you want to keep using two-factor authentication with this wallet,', |
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'or do you want to disable it, and have two master private keys in your wallet?' |
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]) |
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choices = [('keep', 'Keep'), ('disable', 'Disable')] |
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f = lambda x: self.on_choice(wizard, seed, passphrase, x) |
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wizard.choice_dialog(choices=choices, message=msg, title=title, run_next=f) |
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|
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def on_choice(self, wizard, seed, passphrase, x): |
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if x == 'disable': |
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f = lambda pw, encrypt: wizard.run('on_restore_pw', seed, passphrase, pw, encrypt) |
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wizard.request_password(run_next=f) |
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else: |
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self.create_keystore(wizard, seed, passphrase) |
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|
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def on_restore_pw(self, wizard, seed, passphrase, password, encrypt_storage): |
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storage = wizard.storage |
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xprv1, xpub1, xprv2, xpub2 = self.xkeys_from_seed(seed, passphrase) |
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k1 = keystore.from_xprv(xprv1) |
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k2 = keystore.from_xprv(xprv2) |
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k1.add_seed(seed) |
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k1.update_password(None, password) |
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k2.update_password(None, password) |
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storage.put('x1/', k1.dump()) |
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storage.put('x2/', k2.dump()) |
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long_user_id, short_id = get_user_id(storage) |
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xtype = xpub_type(xpub1) |
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xpub3 = make_xpub(get_signing_xpub(xtype), long_user_id) |
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k3 = keystore.from_xpub(xpub3) |
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storage.put('x3/', k3.dump()) |
|
|
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storage.set_keystore_encryption(bool(password)) |
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if encrypt_storage: |
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storage.set_password(password, enc_version=STO_EV_USER_PW) |
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|
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wizard.wallet = Wallet_2fa(storage) |
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wizard.create_addresses() |
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|
|
|
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def create_remote_key(self, email, wizard): |
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xpub1 = wizard.storage.get('x1/')['xpub'] |
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xpub2 = wizard.storage.get('x2/')['xpub'] |
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# Generate third key deterministically. |
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long_user_id, short_id = get_user_id(wizard.storage) |
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xtype = xpub_type(xpub1) |
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xpub3 = make_xpub(get_signing_xpub(xtype), long_user_id) |
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# secret must be sent by the server |
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try: |
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r = server.create(xpub1, xpub2, email) |
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except (socket.error, ErrorConnectingServer): |
|
wizard.show_message('Server not reachable, aborting') |
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wizard.terminate() |
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return |
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except TrustedCoinException as e: |
|
if e.status_code == 409: |
|
r = None |
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else: |
|
wizard.show_message(str(e)) |
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return |
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if r is None: |
|
otp_secret = None |
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else: |
|
otp_secret = r.get('otp_secret') |
|
if not otp_secret: |
|
wizard.show_message(_('Error')) |
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return |
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_xpub3 = r['xpubkey_cosigner'] |
|
_id = r['id'] |
|
if short_id != _id: |
|
wizard.show_message("unexpected trustedcoin short_id: expected {}, received {}" |
|
.format(short_id, _id)) |
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return |
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if xpub3 != _xpub3: |
|
wizard.show_message("unexpected trustedcoin xpub3: expected {}, received {}" |
|
.format(xpub3, _xpub3)) |
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return |
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self.request_otp_dialog(wizard, short_id, otp_secret, xpub3) |
|
|
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def check_otp(self, wizard, short_id, otp_secret, xpub3, otp, reset): |
|
if otp: |
|
self.do_auth(wizard, short_id, otp, xpub3) |
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elif reset: |
|
wizard.opt_bip39 = False |
|
wizard.opt_ext = True |
|
f = lambda seed, is_bip39, is_ext: wizard.run('on_reset_seed', short_id, seed, is_ext, xpub3) |
|
wizard.restore_seed_dialog(run_next=f, test=self.is_valid_seed) |
|
|
|
def on_reset_seed(self, wizard, short_id, seed, is_ext, xpub3): |
|
f = lambda passphrase: wizard.run('on_reset_auth', short_id, seed, passphrase, xpub3) |
|
wizard.passphrase_dialog(run_next=f) if is_ext else f('') |
|
|
|
def do_auth(self, wizard, short_id, otp, xpub3): |
|
try: |
|
server.auth(short_id, otp) |
|
except TrustedCoinException as e: |
|
if e.status_code == 400: # invalid OTP |
|
wizard.show_message(_('Invalid one-time password.')) |
|
# ask again for otp |
|
self.request_otp_dialog(wizard, short_id, None, xpub3) |
|
else: |
|
wizard.show_message(str(e)) |
|
wizard.terminate() |
|
except Exception as e: |
|
wizard.show_message(str(e)) |
|
wizard.terminate() |
|
else: |
|
k3 = keystore.from_xpub(xpub3) |
|
wizard.storage.put('x3/', k3.dump()) |
|
wizard.storage.put('use_trustedcoin', True) |
|
wizard.storage.write() |
|
wizard.wallet = Wallet_2fa(wizard.storage) |
|
wizard.run('create_addresses') |
|
|
|
def on_reset_auth(self, wizard, short_id, seed, passphrase, xpub3): |
|
xprv1, xpub1, xprv2, xpub2 = self.xkeys_from_seed(seed, passphrase) |
|
if (wizard.storage.get('x1/')['xpub'] != xpub1 or |
|
wizard.storage.get('x2/')['xpub'] != xpub2): |
|
wizard.show_message(_('Incorrect seed')) |
|
return |
|
r = server.get_challenge(short_id) |
|
challenge = r.get('challenge') |
|
message = 'TRUSTEDCOIN CHALLENGE: ' + challenge |
|
def f(xprv): |
|
_, _, _, _, c, k = deserialize_xprv(xprv) |
|
pk = bip32_private_key([0, 0], k, c) |
|
key = ecc.ECPrivkey(pk) |
|
sig = key.sign_message(message, True) |
|
return base64.b64encode(sig).decode() |
|
|
|
signatures = [f(x) for x in [xprv1, xprv2]] |
|
r = server.reset_auth(short_id, challenge, signatures) |
|
new_secret = r.get('otp_secret') |
|
if not new_secret: |
|
wizard.show_message(_('Request rejected by server')) |
|
return |
|
self.request_otp_dialog(wizard, short_id, new_secret, xpub3) |
|
|
|
@hook |
|
def get_action(self, storage): |
|
if storage.get('wallet_type') != '2fa': |
|
return |
|
if not storage.get('x1/'): |
|
return self, 'show_disclaimer' |
|
if not storage.get('x2/'): |
|
return self, 'show_disclaimer' |
|
if not storage.get('x3/'): |
|
return self, 'accept_terms_of_use'
|
|
|