| // Copyright 2021 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_AEAD_INTERNAL_ZERO_COPY_AES_GCM_BORINGSSL_H_ |
| #define TINK_AEAD_INTERNAL_ZERO_COPY_AES_GCM_BORINGSSL_H_ |
| |
| #include <cstdint> |
| #include <memory> |
| #include <utility> |
| |
| #include "absl/base/macros.h" |
| #include "tink/aead/internal/ssl_aead.h" |
| #include "tink/aead/internal/zero_copy_aead.h" |
| #include "tink/util/secret_data.h" |
| #include "tink/util/statusor.h" |
| |
| namespace crypto { |
| namespace tink { |
| namespace internal { |
| |
| class ZeroCopyAesGcmBoringSsl : public ZeroCopyAead { |
| public: |
| static crypto::tink::util::StatusOr<std::unique_ptr<ZeroCopyAead>> New( |
| const util::SecretData &key); |
| |
| int64_t MaxEncryptionSize(int64_t plaintext_size) const override; |
| |
| crypto::tink::util::StatusOr<int64_t> Encrypt( |
| absl::string_view plaintext, absl::string_view associated_data, |
| absl::Span<char> buffer) const override; |
| |
| int64_t MaxDecryptionSize(int64_t ciphertext_size) const override; |
| |
| crypto::tink::util::StatusOr<int64_t> Decrypt( |
| absl::string_view ciphertext, absl::string_view associated_data, |
| absl::Span<char> buffer) const override; |
| |
| private: |
| explicit ZeroCopyAesGcmBoringSsl(std::unique_ptr<SslOneShotAead> aead) |
| : aead_(std::move(aead)) {} |
| |
| const std::unique_ptr<SslOneShotAead> aead_; |
| }; |
| |
| } // namespace internal |
| } // namespace tink |
| } // namespace crypto |
| |
| #endif // TINK_AEAD_INTERNAL_ZERO_COPY_AES_GCM_BORINGSSL_H_ |