firmware/testing/test_pwsave.py
Peter D. Gray e128161ada
comments
2023-02-08 10:25:07 -05:00

163 lines
4.1 KiB
Python

# (c) Copyright 2020 by Coinkite Inc. This file is covered by license found in COPYING-CC.
#
# tests for ../shared/pwsave.py
#
import pytest, time, os
from test_ux import word_menu_entry, enter_complex
from binascii import b2a_hex, a2b_hex
from constants import simulator_fixed_xprv
SIM_FNAME = '../unix/work/MicroSD/.tmp.tmp'
@pytest.fixture
def set_pw_phrase(pick_menu_item, word_menu_entry):
def doit(words):
for w in words.split():
pick_menu_item('Add Word')
word_menu_entry([w.lower()])
pick_menu_item(w)
return doit
@pytest.fixture
def get_to_pwmenu(cap_story, need_keypress, goto_home, pick_menu_item):
# drill to the enter passphrase menu
def doit():
goto_home()
pick_menu_item('Passphrase')
_, story = cap_story()
if 'your BIP-39 seed words' in story:
time.sleep(.01); need_keypress('y'); time.sleep(.01) # skip warning
return doit
@pytest.mark.parametrize('pws', [
'abc abc def def 123',
'empty',
'1 2 3',
'1 2 3 11 22 33',
'1aa1 2aa2 1aa2 2aa1',
'aBc1 aBc2 aBc3',
'abcd defg',
'1aaa 2aaa',
'1aaa2aaa',
'ab'*25,
])
def test_first_time(pws, need_keypress, cap_story, pick_menu_item, goto_home, enter_complex, cap_menu, get_to_pwmenu):
try: os.unlink(SIM_FNAME)
except: pass
pws = pws.split()
xfps = {}
if pws[0] == 'empty':
pws.append('')
uniq = []
for pw in pws:
if pw not in uniq:
uniq.append(pw)
get_to_pwmenu()
if pw == '':
pick_menu_item('Add Word')
need_keypress('x')
else:
enter_complex(pw)
pick_menu_item('APPLY')
time.sleep(.01)
title, story = cap_story()
xfp = title[1:-1]
assert '1 to use and save to MicroSD' in story
need_keypress('1')
xfps[pw] = xfp
for n, pw in enumerate(uniq):
get_to_pwmenu()
pick_menu_item('Restore Saved')
m = cap_menu()
#print(m)
assert len(m) == len(uniq)
if len(pw):
if m[0][0] != '*':
assert set(i[0] for i in m) == set(j[0] if j else '(' for j in pws)
else:
assert set(i[-1] for i in m) == set(j[-1] if j else ')' for j in pws)
pick_menu_item(m[n])
time.sleep(.01)
title, story = cap_story()
xfp = title[1:-1]
assert xfp == xfps[uniq[n]]
need_keypress('y');
def test_crypto_unittest(sim_eval, sim_exec, simulator):
# unit test for AES key generation from SDCard and master secret
card = sim_exec('import files; from h import b2a_hex; cs = files.CardSlot().__enter__(); RV.write(b2a_hex(cs.get_id_hash())); cs.__exit__()')
# known value for simulator, generally unknown on random SD cards
assert card == '95a60b9ff0c944ec2c23a28e599f794e95bb376a451b6037b054f8230b405fb0'
salt = a2b_hex(card)
# read key simulator calculates
key = sim_exec('''\
import files; from h import b2a_hex; \
from pwsave import PassphraseSaver; \
cs = files.CardSlot().__enter__(); \
p=PassphraseSaver(); p._calc_key(cs); RV.write(b2a_hex(p.key)); cs.__exit__()''')
assert len(key) == 64
# recalc what it should be
from pycoin.key.BIP32Node import BIP32Node
from pycoin.encoding import from_bytes_32, to_bytes_32
from hashlib import sha256
mk = BIP32Node.from_wallet_key(simulator_fixed_xprv)
sk = mk.subkey_for_path('2147431408p/0p')
md = sha256()
md.update(salt)
md.update(to_bytes_32(sk.secret_exponent()))
md.update(salt)
expect = sha256(md.digest()).hexdigest()
assert expect == key
# check that key works for decrypt and that the file was actually encrypted
with open(SIM_FNAME, 'rb') as fd:
raw = fd.read()
import pyaes
d = pyaes.AESModeOfOperationCTR(a2b_hex(expect), pyaes.Counter(0)).decrypt
txt = str(bytearray(d(raw)), 'utf8')
print(txt)
assert txt[0] == '[' and txt[-1] == ']'
import json
j = json.loads(txt)
assert isinstance(j, list)
assert j[0]['pw']
assert j[0]['xfp']
# EOF