| /* |
| * Copyright (C) 2021 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| #pragma once |
| |
| #include <optional> |
| |
| #include <android-base/macros.h> |
| #include <android-base/result.h> |
| |
| #include <utils/StrongPointer.h> |
| |
| #include <android/system/keystore2/IKeystoreService.h> |
| |
| class KeystoreHmacKey { |
| using IKeystoreService = ::android::system::keystore2::IKeystoreService; |
| using IKeystoreSecurityLevel = ::android::system::keystore2::IKeystoreSecurityLevel; |
| using KeyDescriptor = ::android::system::keystore2::KeyDescriptor; |
| |
| public: |
| KeystoreHmacKey(); |
| android::base::Result<void> initialize(android::sp<IKeystoreService> service, |
| android::sp<IKeystoreSecurityLevel> securityLevel); |
| android::base::Result<std::string> sign(const std::string& message) const; |
| android::base::Result<void> verify(const std::string& message, |
| const std::string& signature) const; |
| |
| private: |
| android::base::Result<void> createKey(); |
| KeyDescriptor mDescriptor; |
| android::sp<IKeystoreService> mService; |
| android::sp<IKeystoreSecurityLevel> mSecurityLevel; |
| }; |