1# Copyright 2022 Google LLC 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS-IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14"""Test for write_cleartext_keyset.""" 15import io 16 17from absl.testing import absltest 18 19from tink import aead 20 21import create_keyset 22import load_cleartext_keyset 23import write_cleartext_keyset 24 25 26class LoadCleartextKeysetTest(absltest.TestCase): 27 28 def test_write_cleartext_keyset_serializes_a_keyset_correctly(self): 29 aead.register() 30 keyset_handle = create_keyset.CreateAead128GcmKeyset() 31 string_io = io.StringIO() 32 write_cleartext_keyset.WriteKeyset(keyset_handle, string_io) 33 34 # Make sure that we can deserialize the keyset and use the contained 35 # primitive. 36 deserialized_keyset_handle = load_cleartext_keyset.LoadKeyset( 37 string_io.getvalue()) 38 deserialized_aead_primitive = deserialized_keyset_handle.primitive( 39 aead.Aead) 40 aead_primitive = keyset_handle.primitive(aead.Aead) 41 42 plaintext = b'Some plaintext' 43 associated_data = b'Some associated data' 44 45 self.assertEqual( 46 deserialized_aead_primitive.decrypt( 47 aead_primitive.encrypt(plaintext, associated_data), 48 associated_data), plaintext) 49 50 self.assertEqual( 51 aead_primitive.decrypt( 52 deserialized_aead_primitive.encrypt(plaintext, associated_data), 53 associated_data), plaintext) 54 55 56if __name__ == '__main__': 57 absltest.main() 58