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 WEBSERVER_WEBSERVD_ENCRYPTOR_H_ 16 #define WEBSERVER_WEBSERVD_ENCRYPTOR_H_ 17 18 #include <memory> 19 #include <string> 20 21 namespace webservd { 22 23 // An abstract class to perform authenticated encryption. 24 class Encryptor { 25 public: 26 virtual ~Encryptor() = default; 27 28 // Encrypts and authenticates the given |plaintext| and emits the 29 // |ciphertext|. Returns true on success. 30 virtual bool EncryptWithAuthentication(const std::string& plaintext, 31 std::string* ciphertext) = 0; 32 33 // Decrypts and authenticates the given |ciphertext| and emits the 34 // |plaintext|. Returns true on success. 35 virtual bool DecryptWithAuthentication(const std::string& ciphertext, 36 std::string* plaintext) = 0; 37 38 // A factory method to be exported by the default Encryptor implementation 39 // for a given platform. Like a constructor, this method should not perform 40 // any significant initialization work. The caller assumes ownership of the 41 // pointer. 42 static std::unique_ptr<Encryptor> CreateDefaultEncryptor(); 43 }; 44 45 } // namespace webservd 46 47 #endif // WEBSERVER_WEBSERVD_ENCRYPTOR_H_ 48
