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_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 _deserialize(self, data, context):
try:
# unprotect_data will return None if raw_cached is None
return memcache_crypt.unprotect_data(context, data)
except Exception:
msg = _LE('Failed to decrypt/verify cache data')
self._LOG.exception(msg)
# this should have the same effect as data not
# found in cache
return None
def _deserialize(self, data, context):
try:
# unprotect_data will return None if raw_cached is None
return memcache_crypt.unprotect_data(context, data)
except Exception:
msg = _LE('Failed to decrypt/verify cache data')
self._LOG.exception(msg)
# this should have the same effect as data not
# found in cache
return None
