| // Copyright 2019 Google LLC |
| // |
| // 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_PRF_PRF_KEY_TEMPLATES_H_ |
| #define TINK_PRF_PRF_KEY_TEMPLATES_H_ |
| |
| #include "proto/tink.pb.h" |
| |
| namespace crypto { |
| namespace tink { |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // Pre-generated KeyTemplate for Prf key types. One can use these templates |
| // to generate new KeysetHandle object with fresh keys. |
| // To generate a new keyset that contains a single HkdfPrfKey, one can do: |
| // |
| // auto handle_result = |
| // KeysetHandle::GenerateNew(PrfKeyTemplates::HkdfSha256()); |
| // if (!handle_result.ok()) { /* fail with error */ } |
| // auto keyset_handle = std::move(handle_result.value()); |
| class PrfKeyTemplates { |
| public: |
| // Hkdf |
| // * Hash function: SHA256 |
| // * Key size: 256 bit |
| // * Salt: empty |
| static const google::crypto::tink::KeyTemplate& HkdfSha256(); |
| static const google::crypto::tink::KeyTemplate& HmacSha256(); |
| static const google::crypto::tink::KeyTemplate& HmacSha512(); |
| static const google::crypto::tink::KeyTemplate& AesCmac(); |
| }; |
| |
| } // namespace tink |
| } // namespace crypto |
| |
| #endif // TINK_PRF_PRF_KEY_TEMPLATES_H_ |