Dev v1.0.8 (#76)

* PASS1-82: Delete input PSBT file after successful signing (#59)

* PASS1-156: Bitcoin Core causes invalid bitcoin address error (#63)

* PASS1-126: Passport crashes when making a microSD backup (#71)

This issue was happening only when attempting to backup a device with a multisig configuration that contained multiple different derivation paths instead of all devices in a given configuration having the same derivation path.

* PASS1-181: Passport fails to verify multi-sig change addresses in Sparrow (#72)

* PASS1-191: Add pairing support for Simple Bitcoin Wallet (#75)

Co-authored-by: Corey Lakey <corey.lakey@gmail.com>
Co-authored-by: Corey Lakey <corey@foundationdevices.com>

ports/stm32/boards/Passport/manifest.py

@@ -11,7 +11,7 @@
         'menu.py', 'settings.py', 'sram4.py', 'sffile.py', 'collections/deque.py', 'uQR.py', 'constants.py',
         'callgate.py', 'pincodes.py', 'stash.py', 'login_ux.py', 'public_constants.py', 'seed.py', 'chains.py',
         'opcodes.py', 'bip39_utils.py', 'seed_entry_ux.py', 'sflash.py', 'snake.py', 'stacking_sats.py',
-        'se_commands.py', 'serializations.py','seed_check_ux.py', 'export.py', 'compat7z.py', 'multisig.py', 'psbt.py',
+        'se_commands.py', 'serializations.py', 'seed_check_ux.py', 'export.py', 'compat7z.py', 'multisig.py', 'psbt.py',
         'periodic.py', 'exceptions.py', 'noise_source.py', 'self_test_ux.py', 'flash_cache.py',
         'history.py', 'accounts.py', 'log.py', 'descriptor.py', 'accept_terms_ux.py', 'new_wallet.py', 'stat.py',
         'uasyncio/__init__.py', 'uasyncio/core.py', 'uasyncio/queues.py', 'uasyncio/synchro.py', 'ie.py',
@@ -33,4 +33,4 @@
         'wallets/multisig_json.py', 'wallets/multisig_import.py', 'wallets/generic_json_wallet.py', 'wallets/sparrow.py',
         'wallets/bitcoin_core.py', 'wallets/wasabi.py', 'wallets/btcpay.py', 'wallets/gordian.py', 'wallets/lily.py',
         'wallets/fullynoded.py', 'wallets/dux_reserve.py', 'wallets/specter.py', 'wallets/casa.py', 'wallets/vault.py',
-        'wallets/caravan.py'))
+        'wallets/caravan.py', 'wallets/simple_bitcoin_wallet.py'))

ports/stm32/boards/Passport/modules/actions.py

@@ -21,7 +21,7 @@
 import common
 from common import settings, system, noise, dis
 from utils import (UXStateMachine, imported, pretty_short_delay, xfp2str, to_str,
-                   truncate_string_to_width, set_next_addr, scan_for_address, get_accounts, run_chooser,
+                   truncate_string_to_width, set_next_addr, get_accounts, run_chooser,
                    make_account_name_num, is_valid_address, save_next_addr, needs_microsd, format_btc_address,
                    is_all_zero, bytes_to_hex_str, split_to_lines, is_valid_btc_address, do_address_verify, run_chooser)
 from wallets.utils import get_export_mode, get_addr_type_from_address, get_deriv_path_from_addr_type_and_acct
@@ -272,6 +272,7 @@ async def show(self):
                 if address == None:
                     return
 
+                address = address.lower()
                 address, is_valid_btc = await is_valid_btc_address(address)
                 if is_valid_btc == False:
                     if not self.goto_prev():

ports/stm32/boards/Passport/modules/auth.py

@@ -684,7 +684,7 @@ def sign_transaction(psbt_len, flags=0x0, psbt_sha=None):
 
 def sign_psbt_file(filename):
     # sign a PSBT file found on a microSD card
-    from files import CardSlot, CardMissingError
+    from files import CardSlot, CardMissingError, securely_blank_file
     from common import dis, system
     # from sram4 import tmp_buf  -- the fd.readinto() below doesn't work for some odd reason, even though the fd.readinto() for firmware updates
     tmp_buf = bytearray(1024)
@@ -798,6 +798,8 @@ async def done(psbt):
                                     # save transaction, in hex
                                     txid = psbt.finalize(fd)
 
+                        securely_blank_file(filename)
+
                     # success and done!
                     break
 

ports/stm32/boards/Passport/modules/data_codecs/psbt_txn_sampler.py

@@ -15,7 +15,7 @@ class PsbtTxnSampler(DataSampler):
     # Return True if it matches or False if not.
     @classmethod
     def sample(cls, data):
-        print('psbt sampler: data={}'.format(b2a_hex(data)))
+        # print('psbt sampler: data={}'.format(b2a_hex(data)))
         if data[0:5] == b'psbt\xff':
             return True
         if data[0:10] == b'70736274ff':        # hex-encoded

ports/stm32/boards/Passport/modules/export.py

@@ -40,7 +40,7 @@ def ms_has_master_xfp(xpubs):
     master_xfp = settings.get('xfp', None)
 
     for xpub in xpubs:
-        (xfp, _) = xpub
+        xfp = xpub[0]
         # print('ms_has_master_xfp: xfp={} master_xfp={}'.format(xfp, master_xfp))
         if xfp == master_xfp:
             # print('Including this one')

ports/stm32/boards/Passport/modules/files.py

@@ -246,4 +246,42 @@ def get_file_path(self, filename, path=None):
 
         return fname, basename+ext
 
+def securely_blank_file(full_path):
+    # input PSBT file no longer required; so delete it
+    # - blank with zeros
+    # - rename to garbage (to hide filename after undelete)
+    # - delete 
+    # - ok if file missing already (card maybe have been swapped)
+    #
+    # NOTE: we know the FAT filesystem code is simple, see 
+    #       ../external/micropython/extmod/vfs_fat.[ch]
+
+    path, basename = full_path.rsplit('/', 1)
+
+    with CardSlot() as card:
+        try:
+            blk = bytes(64)
+
+            with open(full_path, 'r+b') as fd:
+                size = fd.seek(0, 2)
+                fd.seek(0)
+
+                # blank it
+                for i in range((size // len(blk)) + 1):
+                    fd.write(blk)
+
+                assert fd.seek(0, 1) >= size
+
+            # probably pointless, but why not:
+            os.sync()
+
+        except OSError as exc:
+            # missing file is okay
+            if exc.args[0] == ENOENT: return
+            raise
+
+        # rename it and delete
+        new_name = path + '/' + ('x'*len(basename))
+        os.rename(full_path, new_name)
+        os.remove(new_name)
 # EOF

ports/stm32/boards/Passport/modules/utils.py

@@ -447,6 +447,7 @@ async def show_top_menu():
 # TODO: For now this just checks the front bytes, but it could ensure the whole thing is valid
 def is_valid_address(address):
     # Valid addresses: 1 , 3 , bc1, tb1, m, n, 2
+    address = address.lower()
     return  (len(address) > 3) and \
             ((address[0] == '1') or \
             (address[0] == '2') or \
@@ -530,7 +531,7 @@ def find_address(path, start_address_idx, address, addr_type, ms_wallet, is_chan
         with stash.SensitiveValues() as sv:
             if ms_wallet:
                 # NOTE: Can't easily reverse order here, so this is slightly less efficient
-                for (curr_idx, paths, curr_address, script) in ms_wallet.yield_addresses(start_address_idx, max_to_check):
+                for (curr_idx, paths, curr_address, script) in ms_wallet.yield_addresses(start_address_idx, max_to_check, change_idx=1 if is_change else 0):
                     # print('curr_idx={}: paths={} curr_address = {}'.format(curr_idx, paths, curr_address))
 
                     if curr_address == address:

ports/stm32/boards/Passport/modules/wallets/simple_bitcoin_wallet.py

@@ -0,0 +1,21 @@
+# SPDX-FileCopyrightText: 2021 Foundation Devices, Inc. <hello@foundationdevices.com>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# simple_bitcoin_wallet.py - Simple Bitcoin Wallet support
+#
+
+from .generic_json_wallet import create_generic_json_wallet
+from .multisig_json import create_multisig_json_wallet
+from .multisig_import import read_multisig_config_from_qr, read_multisig_config_from_microsd
+from data_codecs.qr_type import QRType
+
+SimpleBitcoinWallet = {
+    'label': 'Simple Bitcoin Wallet',
+    'sig_types': [
+        {'id': 'single-sig', 'label': 'Single-sig', 'addr_type': None,
+            'create_wallet': create_generic_json_wallet},
+    ],
+    'export_modes': [
+        {'id': 'qr', 'label': 'QR Code', 'qr_type': QRType.UR2},
+    ]
+}

ports/stm32/boards/Passport/modules/wallets/sw_wallets.py

@@ -15,6 +15,7 @@
 # from .fullynoded import FullyNodedWallet
 # from .gordian import GordianWallet
 # from .lily import LilyWallet
+from .simple_bitcoin_wallet import SimpleBitcoinWallet
 from .sparrow import SparrowWallet
 from .specter import SpecterWallet
 from .wasabi import WasabiWallet
@@ -31,6 +32,7 @@
     # FullyNodedWallet,
     # GordianWallet,
     # LilyWallet,
+    SimpleBitcoinWallet,
     SparrowWallet,
     SpecterWallet,
     WasabiWallet,