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trezor-firmware/tests/device_tests/test_reset_backup.py
2020-01-07 12:38:12 +00:00

266 lines
8.5 KiB
Python

# This file is part of the Trezor project.
#
# Copyright (C) 2012-2019 SatoshiLabs and contributors
#
# This library is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3
# as published by the Free Software Foundation.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the License along with this library.
# If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
from unittest import mock
import pytest
import shamir_mnemonic as shamir
from trezorlib import device, messages
from trezorlib.messages import BackupType, ButtonRequestType as B
from ..common import EXTERNAL_ENTROPY, click_through, read_and_confirm_mnemonic
def backup_flow_bip39(client):
mnemonic = None
def input_flow():
nonlocal mnemonic
# 1. Confirm Reset
yield from click_through(client.debug, screens=1, code=B.ResetDevice)
# mnemonic phrases
btn_code = yield
assert btn_code == B.ResetDevice
mnemonic = read_and_confirm_mnemonic(client.debug, words=12)
# confirm recovery seed check
btn_code = yield
assert btn_code == B.Success
client.debug.press_yes()
# confirm success
btn_code = yield
assert btn_code == B.Success
client.debug.press_yes()
with client:
client.set_expected_responses(
[
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.Success),
messages.ButtonRequest(code=B.Success),
messages.Success(),
]
)
client.set_input_flow(input_flow)
device.backup(client)
return mnemonic.encode()
def backup_flow_slip39_basic(client):
mnemonics = []
def input_flow():
# 1. Checklist
# 2. Number of shares (5)
# 3. Checklist
# 4. Threshold (3)
# 5. Checklist
# 6. Confirm show seeds
yield from click_through(client.debug, screens=6, code=B.ResetDevice)
# Mnemonic phrases
for _ in range(5):
yield # Phrase screen
mnemonic = read_and_confirm_mnemonic(client.debug, words=20)
mnemonics.append(mnemonic)
yield # Confirm continue to next
client.debug.press_yes()
# Confirm backup
yield
client.debug.press_yes()
with client:
client.set_input_flow(input_flow)
client.set_expected_responses(
[messages.ButtonRequest(code=B.ResetDevice)] * 6 # intro screens
+ [
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.Success),
]
* 5 # individual shares
+ [messages.ButtonRequest(code=B.Success), messages.Success()]
)
device.backup(client)
mnemonics = mnemonics[:3]
ms = shamir.combine_mnemonics(mnemonics)
identifier, iteration_exponent, _, _, _ = shamir._decode_mnemonics(mnemonics)
secret = shamir._encrypt(ms, b"", iteration_exponent, identifier)
return secret
def backup_flow_slip39_advanced(client):
mnemonics = []
def input_flow():
# 1. Confirm Reset
# 2. shares info
# 3. Set & Confirm number of groups
# 4. threshold info
# 5. Set & confirm group threshold value
# 6-15: for each of 5 groups:
# 1. Set & Confirm number of shares
# 2. Set & confirm share threshold value
# 16. Confirm show seeds
yield from click_through(client.debug, screens=16, code=B.ResetDevice)
# show & confirm shares for all groups
for _ in range(5):
for _ in range(5):
# mnemonic phrases
btn_code = yield
assert btn_code == B.ResetDevice
mnemonic = read_and_confirm_mnemonic(client.debug, words=20)
mnemonics.append(mnemonic)
# Confirm continue to next share
btn_code = yield
assert btn_code == B.Success
client.debug.press_yes()
# safety warning
btn_code = yield
assert btn_code == B.Success
client.debug.press_yes()
with client:
client.set_input_flow(input_flow)
client.set_expected_responses(
[messages.ButtonRequest(code=B.ResetDevice)] * 6 # intro screens
+ [
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.ResetDevice),
]
* 5 # group thresholds
+ [
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.Success),
]
* 25 # individual shares
+ [messages.ButtonRequest(code=B.Success), messages.Success()]
)
device.backup(client)
mnemonics = mnemonics[0:3] + mnemonics[5:8] + mnemonics[10:13]
ms = shamir.combine_mnemonics(mnemonics)
identifier, iteration_exponent, _, _, _ = shamir._decode_mnemonics(mnemonics)
secret = shamir._encrypt(ms, b"", iteration_exponent, identifier)
return secret
VECTORS = [
(BackupType.Bip39, backup_flow_bip39),
(BackupType.Slip39_Basic, backup_flow_slip39_basic),
(BackupType.Slip39_Advanced, backup_flow_slip39_advanced),
]
@pytest.mark.skip_t1
@pytest.mark.parametrize("backup_type, backup_flow", VECTORS)
@pytest.mark.setup_client(uninitialized=True)
def test_skip_backup_msg(client, backup_type, backup_flow):
os_urandom = mock.Mock(return_value=EXTERNAL_ENTROPY)
with mock.patch("os.urandom", os_urandom), client:
device.reset(
client,
skip_backup=True,
passphrase_protection=False,
pin_protection=False,
backup_type=backup_type,
)
assert client.features.initialized is True
assert client.features.needs_backup is True
assert client.features.unfinished_backup is False
assert client.features.no_backup is False
assert client.features.backup_type is backup_type
secret = backup_flow(client)
client.init_device()
assert client.features.initialized is True
assert client.features.needs_backup is False
assert client.features.unfinished_backup is False
assert client.features.backup_type is backup_type
assert secret is not None
state = client.debug.state()
assert state.mnemonic_type is backup_type
assert state.mnemonic_secret == secret
@pytest.mark.skip_t1
@pytest.mark.parametrize("backup_type, backup_flow", VECTORS)
@pytest.mark.setup_client(uninitialized=True)
def test_skip_backup_manual(client, backup_type, backup_flow):
def reset_skip_input_flow():
yield # Confirm Recovery
client.debug.press_yes()
yield # Skip Backup
client.debug.press_no()
yield # Confirm skip backup
client.debug.press_no()
os_urandom = mock.Mock(return_value=EXTERNAL_ENTROPY)
with mock.patch("os.urandom", os_urandom), client:
client.set_input_flow(reset_skip_input_flow)
client.set_expected_responses(
[
messages.ButtonRequest(code=B.ResetDevice),
messages.EntropyRequest(),
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.ResetDevice),
messages.Success(),
messages.Features(),
]
)
device.reset(
client,
pin_protection=False,
passphrase_protection=False,
backup_type=backup_type,
)
assert client.features.initialized is True
assert client.features.needs_backup is True
assert client.features.unfinished_backup is False
assert client.features.no_backup is False
assert client.features.backup_type is backup_type
secret = backup_flow(client)
client.init_device()
assert client.features.initialized is True
assert client.features.needs_backup is False
assert client.features.unfinished_backup is False
assert client.features.backup_type is backup_type
assert secret is not None
state = client.debug.state()
assert state.mnemonic_type is backup_type
assert state.mnemonic_secret == secret