| // Copyright 2017 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_HYBRID_HYBRID_ENCRYPT_FACTORY_H_ |
| #define TINK_HYBRID_HYBRID_ENCRYPT_FACTORY_H_ |
| |
| #include "tink/hybrid_encrypt.h" |
| #include "tink/key_manager.h" |
| #include "tink/keyset_handle.h" |
| #include "tink/util/statusor.h" |
| |
| namespace crypto { |
| namespace tink { |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // HybridEncryptFactory allows for obtaining an HybridEncrypt primitive |
| // from a KeysetHandle. |
| // |
| // HybridEncryptFactory gets primitives from the Registry, which can |
| // be initialized via a convenience method from HybridConfig-class. |
| // Here is an example how one can obtain and use a HybridEncrypt primitive: |
| // |
| // auto status = HybridConfig::Register(); |
| // if (!status.ok()) { /* fail with error */ } |
| // KeysetHandle keyset_handle = ...; |
| // std::unique_ptr<HybridEncrypt> hybrid_encrypt = std::move( |
| // HybridEncryptFactory::GetPrimitive(keyset_handle).ValueOrDie()); |
| // std::string plaintext = ...; |
| // std::string context_info = ...; |
| // std::string ciphertext = |
| // hybrid_encrypt.Encrypt(plaintext, context_info).ValueOrDie(); |
| // |
| class HybridEncryptFactory { |
| public: |
| // Returns a HybridEncrypt-primitive that uses key material from the keyset |
| // specified via 'keyset_handle'. |
| static crypto::tink::util::StatusOr<std::unique_ptr<HybridEncrypt>> |
| GetPrimitive(const KeysetHandle& keyset_handle); |
| |
| // Returns a HybridEncrypt-primitive that uses key material from the keyset |
| // specified via 'keyset_handle' and is instantiated by the given |
| // 'custom_key_manager' (instead of the key manager from the Registry). |
| static crypto::tink::util::StatusOr<std::unique_ptr<HybridEncrypt>> |
| GetPrimitive(const KeysetHandle& keyset_handle, |
| const KeyManager<HybridEncrypt>* custom_key_manager); |
| |
| private: |
| HybridEncryptFactory() {} |
| }; |
| |
| } // namespace tink |
| } // namespace crypto |
| |
| #endif // TINK_HYBRID_HYBRID_ENCRYPT_FACTORY_H_ |