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trezor: implement support for Shamir recovery

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This commit is contained in:
matejcik 2019-10-10 17:31:12 +02:00
parent f4e2781786
commit 3fc70bd97a
2 changed files with 101 additions and 21 deletions
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94
electrum/plugins/trezor/qt.py
View file

@ -16,7 +16,7 @@ from electrum.util import bh2u
from ..hw_wallet.qt import QtHandlerBase, QtPluginBase
from ..hw_wallet.plugin import only_hook_if_libraries_available
from .trezor import (TrezorPlugin, TIM_NEW, TIM_RECOVER, TrezorInitSettings,
RECOVERY_TYPE_SCRAMBLED_WORDS, RECOVERY_TYPE_MATRIX)
Capability, BackupType, RecoveryDeviceType)
PASSPHRASE_HELP_SHORT =_(
@ -199,6 +199,8 @@ class QtPlugin(QtPluginBase):
raise Exception(_("The device was disconnected."))
model = client.get_trezor_model()
fw_version = client.client.version
capabilities = client.client.features.capabilities
have_shamir = Capability.Shamir in capabilities
# label
label = QLabel(_("Enter a label to name your device:"))
@ -209,22 +211,87 @@ class QtPlugin(QtPluginBase):
hl.addStretch(1)
vbox.addLayout(hl)
# Backup type
gb_backuptype = QGroupBox()
hbox_backuptype = QHBoxLayout()
gb_backuptype.setLayout(hbox_backuptype)
vbox.addWidget(gb_backuptype)
gb_backuptype.setTitle(_('Select backup type:'))
bg_backuptype = QButtonGroup()
rb_single = QRadioButton(gb_backuptype)
rb_single.setText(_('Single seed (BIP39)'))
bg_backuptype.addButton(rb_single)
bg_backuptype.setId(rb_single, BackupType.Bip39)
hbox_backuptype.addWidget(rb_single)
rb_single.setChecked(not have_shamir)
rb_shamir = QRadioButton(gb_backuptype)
rb_shamir.setText(_('Shamir'))
bg_backuptype.addButton(rb_shamir)
bg_backuptype.setId(rb_shamir, BackupType.Slip39_Basic)
hbox_backuptype.addWidget(rb_shamir)
rb_shamir.setChecked(have_shamir)
rb_shamir.setEnabled(Capability.Shamir in capabilities)
rb_shamir_groups = QRadioButton(gb_backuptype)
rb_shamir_groups.setText(_('Super Shamir'))
bg_backuptype.addButton(rb_shamir_groups)
bg_backuptype.setId(rb_shamir_groups, BackupType.Slip39_Advanced)
hbox_backuptype.addWidget(rb_shamir_groups)
rb_shamir_groups.setEnabled(Capability.ShamirGroups in capabilities)
# word count
gb = QGroupBox()
word_count_buttons = {}
gb_numwords = QGroupBox()
hbox1 = QHBoxLayout()
gb.setLayout(hbox1)
vbox.addWidget(gb)
gb.setTitle(_("Select your seed length:"))
gb_numwords.setLayout(hbox1)
vbox.addWidget(gb_numwords)
gb_numwords.setTitle(_("Select seed/share length:"))
bg_numwords = QButtonGroup()
word_counts = (12, 18, 24)
for i, count in enumerate(word_counts):
rb = QRadioButton(gb)
for count in (12, 18, 20, 24, 33):
rb = QRadioButton(gb_numwords)
word_count_buttons[count] = rb
rb.setText(_("{:d} words").format(count))
bg_numwords.addButton(rb)
bg_numwords.setId(rb, i)
bg_numwords.setId(rb, count)
hbox1.addWidget(rb)
rb.setChecked(True)
def configure_word_counts():
if model == "1":
checked_wordcount = 24
else:
checked_wordcount = 12
if method == TIM_RECOVER:
if have_shamir:
valid_word_counts = (12, 18, 20, 24, 33)
else:
valid_word_counts = (12, 18, 24)
elif rb_single.isChecked():
valid_word_counts = (12, 18, 24)
gb_numwords.setTitle(_('Select seed length:'))
else:
valid_word_counts = (20, 33)
checked_wordcount = 20
gb_numwords.setTitle(_('Select share length:'))
word_count_buttons[checked_wordcount].setChecked(True)
for c, btn in word_count_buttons.items():
btn.setVisible(c in valid_word_counts)
bg_backuptype.buttonClicked.connect(configure_word_counts)
configure_word_counts()
# set up conditional visibility:
# 1. backup_type is only visible when creating new seed
gb_backuptype.setVisible(method == TIM_NEW)
# 2. word_count is not visible when recovering on TT
if method == TIM_RECOVER and model != "1":
gb_numwords.setVisible(False)
# PIN
cb_pin = QCheckBox(_('Enable PIN protection'))
cb_pin.setChecked(True)
@ -255,7 +322,7 @@ class QtPlugin(QtPluginBase):
# ask for recovery type (random word order OR matrix)
bg_rectype = None
if method == TIM_RECOVER and not model == 'T':
if method == TIM_RECOVER and model == '1':
gb_rectype = QGroupBox()
hbox_rectype = QHBoxLayout()
gb_rectype.setLayout(hbox_rectype)
@ -266,14 +333,14 @@ class QtPlugin(QtPluginBase):
rb1 = QRadioButton(gb_rectype)
rb1.setText(_('Scrambled words'))
bg_rectype.addButton(rb1)
bg_rectype.setId(rb1, RECOVERY_TYPE_SCRAMBLED_WORDS)
bg_rectype.setId(rb1, RecoveryDeviceType.ScrambledWords)
hbox_rectype.addWidget(rb1)
rb1.setChecked(True)
rb2 = QRadioButton(gb_rectype)
rb2.setText(_('Matrix'))
bg_rectype.addButton(rb2)
bg_rectype.setId(rb2, RECOVERY_TYPE_MATRIX)
bg_rectype.setId(rb2, RecoveryDeviceType.Matrix)
hbox_rectype.addWidget(rb2)
# no backup
@ -293,11 +360,12 @@ class QtPlugin(QtPluginBase):
wizard.exec_layout(vbox, next_enabled=next_enabled)
return TrezorInitSettings(
word_count=word_counts[bg_numwords.checkedId()],
word_count=bg_numwords.checkedId(),
label=name.text(),
pin_enabled=cb_pin.isChecked(),
passphrase_enabled=cb_phrase.isChecked(),
recovery_type=bg_rectype.checkedId() if bg_rectype else None,
backup_type=bg_backuptype.checkedId(),
no_backup=cb_no_backup.isChecked() if cb_no_backup else False,
)

28
electrum/plugins/trezor/trezor.py
View file

@ -28,19 +28,29 @@ try:
from .clientbase import TrezorClientBase
from trezorlib.messages import (
RecoveryDeviceType, HDNodeType, HDNodePathType,
Capability, BackupType, RecoveryDeviceType, HDNodeType, HDNodePathType,
InputScriptType, OutputScriptType, MultisigRedeemScriptType,
TxInputType, TxOutputType, TxOutputBinType, TransactionType, SignTx)
RECOVERY_TYPE_SCRAMBLED_WORDS = RecoveryDeviceType.ScrambledWords
RECOVERY_TYPE_MATRIX = RecoveryDeviceType.Matrix
TREZORLIB = True
except Exception as e:
_logger.exception('error importing trezorlib')
TREZORLIB = False
RECOVERY_TYPE_SCRAMBLED_WORDS, RECOVERY_TYPE_MATRIX = range(2)
class _EnumMissing:
def __init__(self):
self.counter = 0
self.values = {}
def __getattr__(self, key):
if key not in self.values:
self.values[key] = self.counter
self.counter += 1
return self.values[key]
Capability = _EnumMissing()
BackupType = _EnumMissing()
RecoveryDeviceType = _EnumMissing()
# Trezor initialization methods
@ -87,6 +97,7 @@ class TrezorInitSettings(NamedTuple):
pin_enabled: bool
passphrase_enabled: bool
recovery_type: Any = None
backup_type: int = BackupType.Bip39
no_backup: bool = False
@ -211,7 +222,7 @@ class TrezorPlugin(HW_PluginBase):
wizard.loop.exit(exit_code)
def _initialize_device(self, settings: TrezorInitSettings, method, device_id, wizard, handler):
if method == TIM_RECOVER and settings.recovery_type == RECOVERY_TYPE_SCRAMBLED_WORDS:
if method == TIM_RECOVER and settings.recovery_type == RecoveryDeviceType.ScrambledWords:
handler.show_error(_(
"You will be asked to enter 24 words regardless of your "
"seed's actual length. If you enter a word incorrectly or "
@ -226,12 +237,13 @@ class TrezorPlugin(HW_PluginBase):
raise Exception(_("The device was disconnected."))
if method == TIM_NEW:
strength_from_word_count = {12: 128, 18: 192, 24: 256}
strength_from_word_count = {12: 128, 18: 192, 20: 128, 24: 256, 33: 256}
client.reset_device(
strength=strength_from_word_count[settings.word_count],
passphrase_protection=settings.passphrase_enabled,
pin_protection=settings.pin_enabled,
label=settings.label,
backup_type=settings.backup_type,
no_backup=settings.no_backup)
elif method == TIM_RECOVER:
client.recover_device(
@ -240,7 +252,7 @@ class TrezorPlugin(HW_PluginBase):
passphrase_protection=settings.passphrase_enabled,
pin_protection=settings.pin_enabled,
label=settings.label)
if settings.recovery_type == RECOVERY_TYPE_MATRIX:
if settings.recovery_type == RecoveryDeviceType.Matrix:
handler.close_matrix_dialog()
else:
raise RuntimeError("Unsupported recovery method")