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trezor-firmware/tests/device_tests/reset_recovery/test_reset_slip39_advanced.py

148 lines
5.6 KiB

# 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
from shamir_mnemonic import shamir
from trezorlib import device, messages
from trezorlib.debuglink import TrezorClientDebugLink as Client
from trezorlib.exceptions import TrezorFailure
from trezorlib.messages import BackupType, ButtonRequestType as B
from ...common import click_through, generate_entropy, read_and_confirm_mnemonic
pytestmark = [pytest.mark.skip_t1]
EXTERNAL_ENTROPY = b"zlutoucky kun upel divoke ody" * 2
# TODO: test with different options
@pytest.mark.setup_client(uninitialized=True)
def test_reset_device_slip39_advanced(client: Client):
strength = 128
member_threshold = 3
all_mnemonics = []
def input_flow():
# 1. Confirm Reset
# 2. Backup your seed
# 3. Confirm warning
# 4. shares info
# 5. Set & Confirm number of groups
# 6. threshold info
# 7. Set & confirm group threshold value
# 8-17: for each of 5 groups:
# 1. Set & Confirm number of shares
# 2. Set & confirm share threshold value
# 18. Confirm show seeds
yield from click_through(client.debug, screens=18, code=B.ResetDevice)
# show & confirm shares for all groups
for _g in range(5):
for _h in range(5):
# mnemonic phrases
mnemonic = yield from read_and_confirm_mnemonic(client.debug)
all_mnemonics.append(mnemonic)
# Confirm continue to next share
br = yield
assert br.code == B.Success
client.debug.press_yes()
# safety warning
br = yield
assert br.code == B.Success
client.debug.press_yes()
os_urandom = mock.Mock(return_value=EXTERNAL_ENTROPY)
with mock.patch("os.urandom", os_urandom), client:
client.set_expected_responses(
[
messages.ButtonRequest(code=B.ResetDevice),
messages.EntropyRequest(),
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.ResetDevice), # group #1 counts
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.ResetDevice), # group #2 counts
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.ResetDevice), # group #3 counts
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.ResetDevice), # group #4 counts
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.ResetDevice), # group #5 counts
messages.ButtonRequest(code=B.ResetDevice),
]
+ [
# individual mnemonic
messages.ButtonRequest(code=B.ResetDevice),
messages.ButtonRequest(code=B.Success),
]
* (5 * 5) # groups * shares
+ [
messages.ButtonRequest(code=B.Success),
messages.Success,
messages.Features,
]
)
client.set_input_flow(input_flow)
# No PIN, no passphrase, don't display random
device.reset(
client,
display_random=False,
strength=strength,
passphrase_protection=False,
pin_protection=False,
label="test",
language="en-US",
backup_type=BackupType.Slip39_Advanced,
)
# generate secret locally
internal_entropy = client.debug.state().reset_entropy
secret = generate_entropy(strength, internal_entropy, EXTERNAL_ENTROPY)
# validate that all combinations will result in the correct master secret
validate_mnemonics(all_mnemonics, member_threshold, secret)
# Check if device is properly initialized
assert client.features.initialized is True
assert client.features.needs_backup is False
assert client.features.pin_protection is False
assert client.features.passphrase_protection is False
assert client.features.backup_type is BackupType.Slip39_Advanced
# backup attempt fails because backup was done in reset
with pytest.raises(TrezorFailure, match="ProcessError: Seed already backed up"):
device.backup(client)
def validate_mnemonics(mnemonics, threshold, expected_ems):
# 3of5 shares 3of5 groups
# TODO: test all possible group+share combinations?
test_combination = mnemonics[0:3] + mnemonics[5:8] + mnemonics[10:13]
groups = shamir.decode_mnemonics(test_combination)
ems = shamir.recover_ems(groups)
assert expected_ems == ems.ciphertext