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trezor-firmware/tests/device_tests/test_session_id_and_passphrase.py
2020-02-07 11:41:03 +00:00

281 lines
11 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>.
import pytest
from trezorlib import messages
from trezorlib.messages import FailureType
from trezorlib.tools import parse_path
XPUB_PASSPHRASE_A = "xpub6CekxGcnqnJ6osfY4Rrq7W5ogFtR54KUvz4H16XzaQuukMFZCGebEpVznfq4yFcKEmYyShwj2UKjL7CazuNSuhdkofF4mHabHkLxCMVvsqG"
XPUB_PASSPHRASE_NONE = "xpub6BiVtCpG9fQPxnPmHXG8PhtzQdWC2Su4qWu6XW9tpWFYhxydCLJGrWBJZ5H6qTAHdPQ7pQhtpjiYZVZARo14qHiay2fvrX996oEP42u8wZy"
XPUB_CARDANO_PASSPHRASE_B = "d80e770f6dfc3edb58eaab68aa091b2c27b08a47583471e93437ac5f8baa61880c7af4938a941c084c19731e6e57a5710e6ad1196263291aea297ce0eec0f177"
ADDRESS_N = parse_path("44h/0h/0h")
XPUB_REQUEST = messages.GetPublicKey(address_n=ADDRESS_N, coin_name="Bitcoin")
def _init_session(client, session_id=None):
"""Call Initialize, check and return the session ID."""
response = client.call(messages.Initialize(session_id=session_id))
assert isinstance(response, messages.Features)
assert len(response.session_id) == 32
return response.session_id
def _get_xpub(client, passphrase=None):
"""Get XPUB and check that the appropriate passphrase flow has happened."""
response = client.call_raw(XPUB_REQUEST)
if passphrase is not None:
assert isinstance(response, messages.PassphraseRequest)
response = client.call_raw(messages.PassphraseAck(passphrase=passphrase))
assert isinstance(response, messages.PublicKey)
return response.xpub
@pytest.mark.skip_ui
@pytest.mark.setup_client(passphrase=True)
def test_session_with_passphrase(client):
# Let's start the communication by calling Initialize.
session_id = _init_session(client)
# GetPublicKey requires passphrase and since it is not cached,
# Trezor will prompt for it.
assert _get_xpub(client, passphrase="A") == XPUB_PASSPHRASE_A
# Call Initialize again, this time with the received session id and then call
# GetPublicKey. The passphrase should be cached now so Trezor must
# not ask for it again, whilst returning the same xpub.
new_session_id = _init_session(client, session_id=session_id)
assert new_session_id == session_id
assert _get_xpub(client, passphrase=None) == XPUB_PASSPHRASE_A
# If we set session id in Initialize to None, the cache will be cleared
# and Trezor will ask for the passphrase again.
new_session_id = _init_session(client)
assert new_session_id != session_id
assert _get_xpub(client, passphrase="A") == XPUB_PASSPHRASE_A
# Unknown session id is the same as setting it to None.
_init_session(client, session_id=b"X" * 32)
assert _get_xpub(client, passphrase="A") == XPUB_PASSPHRASE_A
@pytest.mark.skip_ui
def test_session_enable_passphrase(client):
# Let's start the communication by calling Initialize.
session_id = _init_session(client)
# Trezor will not prompt for passphrase because it is turned off.
assert _get_xpub(client, passphrase=None) == XPUB_PASSPHRASE_NONE
# Turn on passphrase.
# Emit the call explicitly to avoid ClearSession done by the library function
response = client.call(messages.ApplySettings(use_passphrase=True))
assert isinstance(response, messages.Success)
# The session id is unchanged, therefore we do not prompt for the passphrase.
new_session_id = _init_session(client, session_id=session_id)
assert session_id == new_session_id
assert _get_xpub(client, passphrase=None) == XPUB_PASSPHRASE_NONE
# We clear the session id now, so the passphrase should be asked.
new_session_id = _init_session(client)
assert session_id != new_session_id
assert _get_xpub(client, passphrase="A") == XPUB_PASSPHRASE_A
@pytest.mark.skip_ui
@pytest.mark.setup_client(passphrase=True)
def test_clear_session_passphrase(client):
# at first attempt, we are prompted for passphrase
assert _get_xpub(client, passphrase="A") == XPUB_PASSPHRASE_A
# now the passphrase is cached
assert _get_xpub(client, passphrase=None) == XPUB_PASSPHRASE_A
# Erase the cached passphrase
response = client.call(messages.Initialize())
assert isinstance(response, messages.Features)
# we have to enter passphrase again
assert _get_xpub(client, passphrase="A") == XPUB_PASSPHRASE_A
@pytest.mark.skip_ui
@pytest.mark.skip_t1
@pytest.mark.setup_client(passphrase=True)
def test_passphrase_on_device(client):
_init_session(client)
# try to get xpub with passphrase on host:
response = client.call_raw(XPUB_REQUEST)
assert isinstance(response, messages.PassphraseRequest)
response = client.call_raw(messages.PassphraseAck(passphrase="A", on_device=False))
assert isinstance(response, messages.PublicKey)
assert response.xpub == XPUB_PASSPHRASE_A
# try to get xpub again, passphrase should be cached
response = client.call_raw(XPUB_REQUEST)
assert isinstance(response, messages.PublicKey)
assert response.xpub == XPUB_PASSPHRASE_A
# make a new session
_init_session(client)
# try to get xpub with passphrase on device:
response = client.call_raw(XPUB_REQUEST)
assert isinstance(response, messages.PassphraseRequest)
response = client.call_raw(messages.PassphraseAck(on_device=True))
assert isinstance(response, messages.ButtonRequest)
client.debug.input("A")
response = client.call_raw(messages.ButtonAck())
assert isinstance(response, messages.PublicKey)
assert response.xpub == XPUB_PASSPHRASE_A
# try to get xpub again, passphrase should be cached
response = client.call_raw(XPUB_REQUEST)
assert isinstance(response, messages.PublicKey)
assert response.xpub == XPUB_PASSPHRASE_A
@pytest.mark.skip_ui
@pytest.mark.skip_t1
@pytest.mark.setup_client(passphrase=True)
def test_passphrase_always_on_device(client):
# Let's start the communication by calling Initialize.
session_id = _init_session(client)
# Force passphrase entry on Trezor.
response = client.call(messages.ApplySettings(passphrase_always_on_device=True))
assert isinstance(response, messages.Success)
# Since we enabled the always_on_device setting, Trezor will send ButtonRequests and ask for it on the device.
response = client.call_raw(XPUB_REQUEST)
assert isinstance(response, messages.ButtonRequest)
client.debug.input("") # Input empty passphrase.
response = client.call_raw(messages.ButtonAck())
assert isinstance(response, messages.PublicKey)
assert response.xpub == XPUB_PASSPHRASE_NONE
# Passphrase will not be prompted. The session id stays the same and the passphrase is cached.
_init_session(client, session_id=session_id)
response = client.call_raw(XPUB_REQUEST)
assert isinstance(response, messages.PublicKey)
assert response.xpub == XPUB_PASSPHRASE_NONE
# In case we want to add a new passphrase we need to send session_id = None.
_init_session(client)
response = client.call_raw(XPUB_REQUEST)
assert isinstance(response, messages.ButtonRequest)
client.debug.input("A") # Input empty passphrase.
response = client.call_raw(messages.ButtonAck())
assert isinstance(response, messages.PublicKey)
assert response.xpub == XPUB_PASSPHRASE_A
@pytest.mark.skip_ui
@pytest.mark.skip_t2
@pytest.mark.setup_client(passphrase=True)
def test_passphrase_on_device_not_possible_on_t1(client):
# This setting makes no sense on T1.
response = client.call_raw(messages.ApplySettings(passphrase_always_on_device=True))
assert isinstance(response, messages.Failure)
assert response.code == FailureType.DataError
# T1 should not accept on_device request
response = client.call_raw(XPUB_REQUEST)
assert isinstance(response, messages.PassphraseRequest)
response = client.call_raw(messages.PassphraseAck(on_device=True))
assert isinstance(response, messages.Failure)
assert response.code == FailureType.DataError
@pytest.mark.skip_ui
@pytest.mark.setup_client(passphrase=True)
def test_passphrase_ack_mismatch(client):
response = client.call_raw(XPUB_REQUEST)
assert isinstance(response, messages.PassphraseRequest)
response = client.call_raw(messages.PassphraseAck(passphrase="A", on_device=True))
assert isinstance(response, messages.Failure)
assert response.code == FailureType.DataError
@pytest.mark.skip_ui
@pytest.mark.setup_client(passphrase=True)
def test_passphrase_missing(client):
response = client.call_raw(XPUB_REQUEST)
assert isinstance(response, messages.PassphraseRequest)
response = client.call_raw(messages.PassphraseAck(passphrase=None))
assert isinstance(response, messages.Failure)
assert response.code == FailureType.DataError
response = client.call_raw(XPUB_REQUEST)
assert isinstance(response, messages.PassphraseRequest)
response = client.call_raw(messages.PassphraseAck(passphrase=None, on_device=False))
assert isinstance(response, messages.Failure)
assert response.code == FailureType.DataError
def _get_xpub_cardano(client, passphrase):
msg = messages.CardanoGetPublicKey(address_n=parse_path("44'/1815'/0'/0/0"))
response = client.call_raw(msg)
if passphrase is not None:
assert isinstance(response, messages.PassphraseRequest)
response = client.call_raw(messages.PassphraseAck(passphrase=passphrase))
assert isinstance(response, messages.CardanoPublicKey)
return response.xpub
@pytest.mark.skip_ui
@pytest.mark.skip_t1
@pytest.mark.altcoin
@pytest.mark.setup_client(passphrase=True)
def test_cardano_passphrase(client):
# Cardano uses a variation of BIP-39 so we need to ask for the passphrase again.
session_id = _init_session(client)
# GetPublicKey requires passphrase and since it is not cached,
# Trezor will prompt for it.
assert _get_xpub(client, passphrase="A") == XPUB_PASSPHRASE_A
# The passphrase is now cached for non-Cardano coins.
assert _get_xpub(client, passphrase=None) == XPUB_PASSPHRASE_A
# Cardano will prompt for it again.
assert _get_xpub_cardano(client, passphrase="B") == XPUB_CARDANO_PASSPHRASE_B
# But now also Cardano has it cached.
assert _get_xpub_cardano(client, passphrase=None) == XPUB_CARDANO_PASSPHRASE_B
# And others behaviour did not change.
assert _get_xpub(client, passphrase=None) == XPUB_PASSPHRASE_A
# Initialize with the session id does not destroy the state
_init_session(client, session_id=session_id)
assert _get_xpub(client, passphrase=None) == XPUB_PASSPHRASE_A
assert _get_xpub_cardano(client, passphrase=None) == XPUB_CARDANO_PASSPHRASE_B
# New session will destroy the state
_init_session(client)
# GetPublicKey must ask for passphrase again
assert _get_xpub(client, passphrase="A") == XPUB_PASSPHRASE_A
# Cardano must also ask for passphrase again
assert _get_xpub_cardano(client, passphrase="B") == XPUB_CARDANO_PASSPHRASE_B