keystore/entropy.h

/*
 * Copyright (C) 2016 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 KEYSTORE_ENTROPY_H_
#define KEYSTORE_ENTROPY_H_

#include <stdint.h>

class Entropy {
  public:
    Entropy() : mRandom(-1) {}
    ~Entropy();

    bool open();
    bool generate_random_data(uint8_t* data, size_t size) const;

  private:
    int mRandom;
};

#endif  // KEYSTORE_ENTROPY_H_