98 lines
4.1 KiB
Python
98 lines
4.1 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
|
|
import six
|
|
import testtools
|
|
|
|
from keystoneclient.middleware import memcache_crypt
|
|
|
|
|
|
class MemcacheCryptPositiveTests(testtools.TestCase):
|
|
def _setup_keys(self, strategy):
|
|
return memcache_crypt.derive_keys(b'token', b'secret', strategy)
|
|
|
|
def test_constant_time_compare(self):
|
|
# make sure it works as a compare, the "constant time" aspect
|
|
# isn't appropriate to test in unittests
|
|
ctc = memcache_crypt.constant_time_compare
|
|
self.assertTrue(ctc('abcd', 'abcd'))
|
|
self.assertTrue(ctc('', ''))
|
|
self.assertFalse(ctc('abcd', 'efgh'))
|
|
self.assertFalse(ctc('abc', 'abcd'))
|
|
self.assertFalse(ctc('abc', 'abc\x00'))
|
|
self.assertFalse(ctc('', 'abc'))
|
|
|
|
# For Python 3, we want to test these functions with both str and bytes
|
|
# as input.
|
|
if six.PY3:
|
|
self.assertTrue(ctc(b'abcd', b'abcd'))
|
|
self.assertTrue(ctc(b'', b''))
|
|
self.assertFalse(ctc(b'abcd', b'efgh'))
|
|
self.assertFalse(ctc(b'abc', b'abcd'))
|
|
self.assertFalse(ctc(b'abc', b'abc\x00'))
|
|
self.assertFalse(ctc(b'', b'abc'))
|
|
|
|
def test_derive_keys(self):
|
|
keys = self._setup_keys(b'strategy')
|
|
self.assertEqual(len(keys['ENCRYPTION']),
|
|
len(keys['CACHE_KEY']))
|
|
self.assertEqual(len(keys['CACHE_KEY']),
|
|
len(keys['MAC']))
|
|
self.assertNotEqual(keys['ENCRYPTION'],
|
|
keys['MAC'])
|
|
self.assertIn('strategy', keys.keys())
|
|
|
|
def test_key_strategy_diff(self):
|
|
k1 = self._setup_keys(b'MAC')
|
|
k2 = self._setup_keys(b'ENCRYPT')
|
|
self.assertNotEqual(k1, k2)
|
|
|
|
def test_sign_data(self):
|
|
keys = self._setup_keys(b'MAC')
|
|
sig = memcache_crypt.sign_data(keys['MAC'], b'data')
|
|
self.assertEqual(len(sig), memcache_crypt.DIGEST_LENGTH_B64)
|
|
|
|
def test_encryption(self):
|
|
keys = self._setup_keys(b'ENCRYPT')
|
|
# what you put in is what you get out
|
|
for data in [b'data', b'1234567890123456', b'\x00\xFF' * 13
|
|
] + [six.int2byte(x % 256) * x for x in range(768)]:
|
|
crypt = memcache_crypt.encrypt_data(keys['ENCRYPTION'], data)
|
|
decrypt = memcache_crypt.decrypt_data(keys['ENCRYPTION'], crypt)
|
|
self.assertEqual(data, decrypt)
|
|
self.assertRaises(memcache_crypt.DecryptError,
|
|
memcache_crypt.decrypt_data,
|
|
keys['ENCRYPTION'], crypt[:-1])
|
|
|
|
def test_protect_wrappers(self):
|
|
data = b'My Pretty Little Data'
|
|
for strategy in [b'MAC', b'ENCRYPT']:
|
|
keys = self._setup_keys(strategy)
|
|
protected = memcache_crypt.protect_data(keys, data)
|
|
self.assertNotEqual(protected, data)
|
|
if strategy == b'ENCRYPT':
|
|
self.assertNotIn(data, protected)
|
|
unprotected = memcache_crypt.unprotect_data(keys, protected)
|
|
self.assertEqual(data, unprotected)
|
|
self.assertRaises(memcache_crypt.InvalidMacError,
|
|
memcache_crypt.unprotect_data,
|
|
keys, protected[:-1])
|
|
self.assertIsNone(memcache_crypt.unprotect_data(keys, None))
|
|
|
|
def test_no_pycrypt(self):
|
|
aes = memcache_crypt.AES
|
|
memcache_crypt.AES = None
|
|
self.assertRaises(memcache_crypt.CryptoUnavailableError,
|
|
memcache_crypt.encrypt_data, 'token', 'secret',
|
|
'data')
|
|
memcache_crypt.AES = aes
|