| // 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. |
| // |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| package daead_test |
| |
| import ( |
| "bytes" |
| "errors" |
| "fmt" |
| "testing" |
| |
| "github.com/golang/protobuf/proto" |
| "github.com/google/tink/go/core/registry" |
| "github.com/google/tink/go/daead" |
| "github.com/google/tink/go/testutil" |
| "github.com/google/tink/go/tink" |
| |
| tinkpb "github.com/google/tink/proto/tink_go_proto" |
| ) |
| |
| func TestAESSIVKeyTemplate(t *testing.T) { |
| template := daead.AESSIVKeyTemplate() |
| if template.TypeUrl != testutil.AESSIVTypeURL { |
| t.Errorf("incorrect type url: %v, expected %v", template.TypeUrl, testutil.AESSIVTypeURL) |
| } |
| if err := testEncryptDecrypt(template); err != nil { |
| t.Errorf("%v", err) |
| } |
| } |
| |
| func testEncryptDecrypt(template *tinkpb.KeyTemplate) error { |
| key, err := registry.NewKey(template) |
| if err != nil { |
| return fmt.Errorf("failed to get key from template, error: %v", err) |
| } |
| |
| sk, err := proto.Marshal(key) |
| if err != nil { |
| return fmt.Errorf("failed to serialize key, error: %v", err) |
| } |
| |
| p, err := registry.Primitive(template.TypeUrl, sk) |
| if err != nil { |
| return fmt.Errorf("failed to get primitive from serialized key, error: %v", err) |
| } |
| |
| primitive, ok := p.(tink.DeterministicAEAD) |
| if !ok { |
| return errors.New("failed to convert DeterministicAEAD primitive") |
| } |
| |
| plaintext := []byte("some data to encrypt") |
| aad := []byte("extra data to authenticate") |
| ciphertext, err := primitive.EncryptDeterministically(plaintext, aad) |
| if err != nil { |
| return fmt.Errorf("encryption failed, error: %v", err) |
| } |
| decrypted, err := primitive.DecryptDeterministically(ciphertext, aad) |
| if err != nil { |
| return fmt.Errorf("decryption failed, error: %v", err) |
| } |
| |
| if !bytes.Equal(plaintext, decrypted) { |
| return fmt.Errorf("decrypted data doesn't match plaintext, got: %q, want: %q", decrypted, plaintext) |
| } |
| |
| return nil |
| } |