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# All Rights Reserved.
#
# 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 hashlib
import hmac
from oslotest import base as test_base
import testscenarios
from oslo_utils import secretutils
class SecretUtilsTest(testscenarios.TestWithScenarios,
test_base.BaseTestCase):
_gen_digest = lambda text: hmac.new(b'foo', text.encode('utf-8'),
digestmod=hashlib.sha1).digest()
scenarios = [
('binary', {'converter': _gen_digest}),
('unicode', {'converter': lambda text: text}),
]
def test_constant_time_compare(self):
# make sure it works as a compare, the "constant time" aspect
# isn't appropriate to test in unittests
# Make sure the unittests are applied to our function instead of
# the built-in function, otherwise that is in vain.
ctc = secretutils._constant_time_compare
self.assertTrue(ctc(self.converter(u'abcd'),
self.converter(u'abcd')))
self.assertTrue(ctc(self.converter(u''),
self.converter(u'')))
self.assertTrue(ctc('abcd', 'abcd'))
self.assertFalse(ctc(self.converter(u'abcd'),
self.converter(u'efgh')))
self.assertFalse(ctc(self.converter(u'abc'),
self.converter(u'abcd')))
self.assertFalse(ctc(self.converter(u'abc'),
self.converter(u'abc\x00')))
self.assertFalse(ctc(self.converter(u''),
self.converter(u'abc')))
self.assertTrue(ctc(self.converter(u'abcd1234'),
self.converter(u'abcd1234')))
self.assertFalse(ctc(self.converter(u'abcd1234'),
self.converter(u'ABCD234')))
self.assertFalse(ctc(self.converter(u'abcd1234'),
self.converter(u'a')))
self.assertFalse(ctc(self.converter(u'abcd1234'),
self.converter(u'1234abcd')))
self.assertFalse(ctc('abcd1234', '1234abcd'))
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