cs_RNG.h

Go to the documentation of this file.

/*
 * Author: Crownstone Team
 * Copyright: Crownstone (https://crownstone.rocks)
 * Date: 5 Jan., 2015
 * License: LGPLv3+, Apache License 2.0, and/or MIT (triple-licensed)
 */
#pragma once
 
#include <cstdint>
 
class RNG {
public:
    // Use static variant of singleton, no dynamic memory allocation
    static RNG& getInstance() {
        static RNG instance;
        return instance;
    }
 
    static void fillBuffer(uint8_t* buffer, uint8_t length);
 
    uint32_t getRandom32();
    uint16_t getRandom16();
    uint8_t getRandom8();
 
private:
    uint8_t _randomBytes[4];
 
    // Constructor
    RNG();
 
    // This class is singleton, deny implementation
    RNG(RNG const&);
 
    // This class is singleton, deny implementation
    void operator=(RNG const&);
};