mirror of
https://github.com/trezor/trezor-firmware.git
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112 lines
3.4 KiB
Python
112 lines
3.4 KiB
Python
# This file is part of the Trezor project.
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#
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# Copyright (C) 2012-2019 SatoshiLabs and contributors
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#
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# This library is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License version 3
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# as published by the Free Software Foundation.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the License along with this library.
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# If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
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import time
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import pytest
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from trezorlib import messages
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from trezorlib.exceptions import PinException
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from ..common import get_test_address
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PIN4 = "1234"
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BAD_PIN = "5678"
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pytestmark = pytest.mark.setup_client(pin=PIN4)
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@pytest.mark.setup_client(pin=None)
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def test_no_protection(client):
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with client:
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client.set_expected_responses([messages.Address])
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get_test_address(client)
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def test_correct_pin(client):
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with client:
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client.use_pin_sequence([PIN4])
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# Expected responses differ between T1 and TT
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is_t1 = client.features.model == "1"
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client.set_expected_responses(
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[
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(is_t1, messages.PinMatrixRequest),
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(
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not is_t1,
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messages.ButtonRequest(code=messages.ButtonRequestType.PinEntry),
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),
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messages.Address,
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]
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)
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# client.set_expected_responses([messages.ButtonRequest, messages.Address])
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get_test_address(client)
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@pytest.mark.skip_t2
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def test_incorrect_pin_t1(client):
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with pytest.raises(PinException):
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client.use_pin_sequence([BAD_PIN])
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get_test_address(client)
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@pytest.mark.skip_t1
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def test_incorrect_pin_t2(client):
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with client:
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# After first incorrect attempt, TT will not raise an error, but instead ask for another attempt
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client.use_pin_sequence([BAD_PIN, PIN4])
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client.set_expected_responses(
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[
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messages.ButtonRequest(code=messages.ButtonRequestType.PinEntry),
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messages.ButtonRequest(code=messages.ButtonRequestType.PinEntry),
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messages.Address,
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]
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)
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get_test_address(client)
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def _check_backoff_time(attempts: int, start: float) -> None:
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"""Helper to assert the exponentially growing delay after incorrect PIN attempts"""
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expected = (2 ** attempts) - 1
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got = round(time.time() - start, 2)
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assert got >= expected
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@pytest.mark.skip_t2
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def test_exponential_backoff_t1(client):
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for attempt in range(3):
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start = time.time()
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with client, pytest.raises(PinException):
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client.use_pin_sequence([BAD_PIN])
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get_test_address(client)
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_check_backoff_time(attempt, start)
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@pytest.mark.skip_t1
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def test_exponential_backoff_t2(client):
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def input_flow():
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"""Inputting some bad PINs and finally the correct one"""
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yield # PIN entry
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for attempt in range(3):
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start = time.time()
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client.debug.input(BAD_PIN)
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yield # PIN entry
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_check_backoff_time(attempt, start)
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client.debug.input(PIN4)
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with client:
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client.set_input_flow(input_flow)
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get_test_address(client)
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