# 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 . from unittest import mock import pytest from shamir_mnemonic import shamir from trezorlib import device, messages as proto from trezorlib.exceptions import TrezorFailure from trezorlib.messages import BackupType, ButtonRequestType as B from ..common import click_through, generate_entropy, read_and_confirm_mnemonic EXTERNAL_ENTROPY = b"zlutoucky kun upel divoke ody" * 2 @pytest.mark.skip_t1 class TestMsgResetDeviceT2: # TODO: test with different options @pytest.mark.setup_client(uninitialized=True) def test_reset_device_slip39_advanced(self, 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( [ proto.ButtonRequest(code=B.ResetDevice), proto.EntropyRequest(), proto.ButtonRequest(code=B.ResetDevice), proto.ButtonRequest(code=B.ResetDevice), proto.ButtonRequest(code=B.ResetDevice), proto.ButtonRequest(code=B.ResetDevice), proto.ButtonRequest(code=B.ResetDevice), proto.ButtonRequest(code=B.ResetDevice), proto.ButtonRequest(code=B.ResetDevice), proto.ButtonRequest(code=B.ResetDevice), # group #1 counts proto.ButtonRequest(code=B.ResetDevice), proto.ButtonRequest(code=B.ResetDevice), # group #2 counts proto.ButtonRequest(code=B.ResetDevice), proto.ButtonRequest(code=B.ResetDevice), # group #3 counts proto.ButtonRequest(code=B.ResetDevice), proto.ButtonRequest(code=B.ResetDevice), # group #4 counts proto.ButtonRequest(code=B.ResetDevice), proto.ButtonRequest(code=B.ResetDevice), # group #5 counts proto.ButtonRequest(code=B.ResetDevice), ] + [ # individual mnemonic proto.ButtonRequest(code=B.ResetDevice), proto.ButtonRequest(code=B.Success), ] * (5 * 5) # groups * shares + [ proto.ButtonRequest(code=B.Success), proto.Success, proto.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