| /* |
| * Copyright 2015 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 SYSTEM_KEYMASTER_KDF_H_ |
| #define SYSTEM_KEYMASTER_KDF_H_ |
| |
| #include <keymaster/serializable.h> |
| |
| namespace keymaster { |
| |
| // Kdf is an abstract class that provides an interface to a |
| // key derivation function. |
| class Kdf { |
| public: |
| virtual ~Kdf() {} |
| |
| virtual bool Init(Buffer& secret, Buffer& salt, Buffer& info, size_t key_bytes_to_generate) = 0; |
| virtual bool Init(const uint8_t* secret, size_t secret_len, const uint8_t* salt, |
| size_t salt_len, const uint8_t* info, size_t info_len, |
| size_t key_bytes_to_generate) = 0; |
| |
| virtual bool secret_key(Buffer* buf) const = 0; |
| }; |
| |
| } // namespace keymaster |
| |
| #endif // SYSTEM_KEYMASTER_KDF_H_ |