Alex Vakulenko | df38164 | 2015-10-08 07:34:23 -0700 | [diff] [blame] | 1 | // Copyright 2015 The Android Open Source Project |
| 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 | |
| 15 | #ifndef BUFFET_ENCRYPTOR_H_ |
| 16 | #define BUFFET_ENCRYPTOR_H_ |
| 17 | |
| 18 | #include <memory> |
| 19 | #include <string> |
| 20 | |
| 21 | #include <base/macros.h> |
| 22 | |
| 23 | namespace buffet { |
| 24 | |
| 25 | // An abstract class to perform authenticated encryption. |
| 26 | class Encryptor { |
| 27 | public: |
| 28 | Encryptor() = default; |
| 29 | virtual ~Encryptor() = default; |
| 30 | |
| 31 | // Encrypts and authenticates the given |plaintext| and emits the |
| 32 | // |ciphertext|. Returns true on success. |
| 33 | virtual bool EncryptWithAuthentication(const std::string& plaintext, |
| 34 | std::string* ciphertext) = 0; |
| 35 | |
| 36 | // Decrypts and authenticates the given |ciphertext| and emits the |
| 37 | // |plaintext|. Returns true on success. |
| 38 | virtual bool DecryptWithAuthentication(const std::string& ciphertext, |
| 39 | std::string* plaintext) = 0; |
| 40 | |
| 41 | // A factory method to be exported by the default Encryptor implementation |
| 42 | // for a given platform. Like a constructor, this method should not perform |
| 43 | // any significant initialization work. The caller assumes ownership of the |
| 44 | // pointer. |
| 45 | static std::unique_ptr<Encryptor> CreateDefaultEncryptor(); |
| 46 | |
| 47 | private: |
| 48 | DISALLOW_COPY_AND_ASSIGN(Encryptor); |
| 49 | }; |
| 50 | |
| 51 | } // namespace buffet |
| 52 | |
| 53 | #endif // BUFFET_ENCRYPTOR_H_ |