| /* |
| ** |
| ** Copyright 2017, 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. |
| */ |
| |
| #ifndef INCLUDE_KEYMASTER_RANDOM_SOURCE_H_ |
| #define INCLUDE_KEYMASTER_RANDOM_SOURCE_H_ |
| |
| #include <stdint.h> |
| #include <hardware/keymaster_defs.h> |
| |
| namespace keymaster { |
| |
| class RandomSource { |
| protected: |
| virtual ~RandomSource () {} |
| |
| public: |
| /** |
| * Generates \p length random bytes, placing them in \p buf. |
| */ |
| virtual keymaster_error_t GenerateRandom(uint8_t* buffer, size_t length) const = 0; |
| }; |
| |
| } // namespace keymaster |
| |
| #endif // INCLUDE_KEYMASTER_RANDOM_SOURCE_H_ |