| chaviw | 09c8d2d | 2020-08-24 15:48:26 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2020 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include <array> |
| 18 | |
| 19 | namespace android { |
| 20 | /** |
| 21 | * Invalid value of HMAC - SHA256. Any events with this HMAC value will be marked as not verified. |
| 22 | */ |
| 23 | constexpr std::array<uint8_t, 32> INVALID_HMAC = {0}; |
| 24 | |
| 25 | class HmacKeyManager { |
| 26 | public: |
| 27 | HmacKeyManager(); |
| 28 | std::array<uint8_t, 32> sign(const uint8_t* data, size_t size) const; |
| 29 | private: |
| 30 | const std::array<uint8_t, 128> mHmacKey; |
| 31 | }; |
| 32 | } // namespace android |