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trezor-firmware/core/tests/test_apps.common.keychain.py

166 lines
5.3 KiB
Python

from common import *
from mock_storage import mock_storage
from storage import cache
import storage.device
from apps.common import HARDENED
from apps.common.paths import path_is_hardened
from apps.common.keychain import LRUCache, Keychain, with_slip44_keychain, get_keychain
from trezor import wire
from trezor.crypto import bip39
class TestKeychain(unittest.TestCase):
@mock_storage
def test_verify_path(self):
n = [
[44 | HARDENED, 134 | HARDENED],
[44 | HARDENED, 11 | HARDENED],
]
keychain = Keychain(b"", "secp256k1", n)
correct = (
[44 | HARDENED, 134 | HARDENED],
[44 | HARDENED, 11 | HARDENED],
[44 | HARDENED, 11 | HARDENED, 12],
)
for path in correct:
keychain.verify_path(path)
fails = (
[44 | HARDENED, 134], # path does not match
[44, 134], # path does not match (non-hardened items)
[44 | HARDENED, 13 | HARDENED], # invalid second item
)
for f in fails:
with self.assertRaises(wire.DataError):
keychain.verify_path(f)
# turn off restrictions
storage.device.set_unsafe_prompts_allowed(True)
for path in correct + fails:
keychain.verify_path(path)
def test_verify_path_special_ed25519(self):
n = [[44 | HARDENED, 134 | HARDENED]]
k = Keychain(b"", "ed25519-keccak", n)
# OK case
k.verify_path([44 | HARDENED, 134 | HARDENED])
# failing case: non-hardened component with ed25519-like derivation
with self.assertRaises(wire.DataError):
k.verify_path([44 | HARDENED, 134 | HARDENED, 1])
def test_verify_path_empty_namespace(self):
k = Keychain(b"", "secp256k1", [[]])
correct = (
[],
[1, 2, 3, 4],
[44 | HARDENED, 11 | HARDENED],
[44 | HARDENED, 11 | HARDENED, 12],
)
for c in correct:
k.verify_path(c)
def test_get_keychain(self):
seed = bip39.seed(" ".join(["all"] * 12), "")
cache.start_session()
cache.set(cache.APP_COMMON_SEED, seed)
namespaces = [[44 | HARDENED]]
keychain = await_result(
get_keychain(wire.DUMMY_CONTEXT, "secp256k1", namespaces)
)
# valid path:
self.assertIsNotNone(keychain.derive([44 | HARDENED, 1 | HARDENED]))
# invalid path:
with self.assertRaises(wire.DataError):
keychain.derive([44])
def test_with_slip44(self):
seed = bip39.seed(" ".join(["all"] * 12), "")
cache.start_session()
cache.set(cache.APP_COMMON_SEED, seed)
slip44_id = 42
valid_path = [44 | HARDENED, slip44_id | HARDENED]
invalid_path = [44 | HARDENED, 99 | HARDENED]
testnet_path = [44 | HARDENED, 1 | HARDENED]
def check_valid_paths(keychain, *paths):
for path in paths:
self.assertIsNotNone(keychain.derive(path))
def check_invalid_paths(keychain, *paths):
for path in paths:
self.assertRaises(wire.DataError, keychain.derive, path)
@with_slip44_keychain(slip44_id)
async def func_id_only(ctx, msg, keychain):
check_valid_paths(keychain, valid_path)
check_invalid_paths(keychain, testnet_path, invalid_path)
@with_slip44_keychain(slip44_id, allow_testnet=True)
async def func_allow_testnet(ctx, msg, keychain):
check_valid_paths(keychain, valid_path, testnet_path)
check_invalid_paths(keychain, invalid_path)
@with_slip44_keychain(slip44_id, curve="ed25519")
async def func_with_curve(ctx, msg, keychain):
self.assertEqual(keychain.curve, "ed25519")
check_valid_paths(keychain, valid_path)
check_invalid_paths(keychain, testnet_path, invalid_path)
await_result(func_id_only(wire.DUMMY_CONTEXT, None))
await_result(func_allow_testnet(wire.DUMMY_CONTEXT, None))
await_result(func_with_curve(wire.DUMMY_CONTEXT, None))
def test_lru_cache(self):
class Deletable:
def __init__(self):
self.deleted = False
def __del__(self):
self.deleted = True
cache = LRUCache(10)
obj_a = Deletable()
self.assertIsNone(cache.get("a"))
cache.insert("a", obj_a)
self.assertIs(cache.get("a"), obj_a)
# test eviction
objects = [(i, Deletable()) for i in range(10)]
for key, obj in objects:
cache.insert(key, obj)
# object A should have been evicted
self.assertIsNone(cache.get("a"))
self.assertTrue(obj_a.deleted)
cache.insert("a", obj_a)
for key, obj in objects[:-1]:
# objects should have been evicted in insertion order
self.assertIsNone(cache.get(key))
self.assertTrue(obj.deleted)
cache.insert(key, obj)
# use "a" object
self.assertIs(cache.get("a"), obj_a)
# insert last object
key, obj = objects[-1]
cache.insert(key, obj)
# "a" is recently used so should not be evicted now
self.assertIs(cache.get("a"), obj_a)
if __name__ == "__main__":
unittest.main()