| // Copyright 2019 Google Inc. |
| // |
| // 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. |
| // |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #ifndef TINK_STREAMINGAEAD_STREAMING_AEAD_WRAPPER_H_ |
| #define TINK_STREAMINGAEAD_STREAMING_AEAD_WRAPPER_H_ |
| |
| #include <memory> |
| |
| #include "absl/strings/string_view.h" |
| #include "tink/primitive_set.h" |
| #include "tink/primitive_wrapper.h" |
| #include "tink/streaming_aead.h" |
| #include "tink/util/statusor.h" |
| #include "proto/tink.pb.h" |
| |
| namespace crypto { |
| namespace tink { |
| |
| // Wraps a set of StreamingAead-instances that correspond to a keyset, |
| // and combines them into a single StreamingAead-primitive, that uses |
| // the provided instances, depending on the context: |
| // * StreamingAead::NewEncryptingStream(...) uses the primary instance |
| // from the set |
| // * StreamingAead::NewDecryptingStream(...) uses the instance that matches |
| // the ciphertext prefix. |
| class StreamingAeadWrapper |
| : public PrimitiveWrapper<StreamingAead, StreamingAead> { |
| public: |
| // Returns a StreamingAead-primitive that uses StreamingAead-instances |
| // provided in 'streaming_aead_set', which must be non-NULL and must contain |
| // a primary instance. |
| util::StatusOr<std::unique_ptr<StreamingAead>> Wrap( |
| std::unique_ptr<PrimitiveSet<StreamingAead>> streaming_aead_set) |
| const override; |
| }; |
| |
| } // namespace tink |
| } // namespace crypto |
| |
| #endif // TINK_STREAMINGAEAD_STREAMING_AEAD_WRAPPER_H_ |