/usr/include/botan-2/botan/system_rng.h is in libbotan-2-dev 2.4.0-5ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | /*
* System RNG interface
* (C) 2014,2015 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_SYSTEM_RNG_H_
#define BOTAN_SYSTEM_RNG_H_
#include <botan/rng.h>
namespace Botan {
/**
* Return a shared reference to a global PRNG instance provided by the
* operating system. For instance might be instantiated by /dev/urandom
* or CryptGenRandom.
*/
BOTAN_PUBLIC_API(2,0) RandomNumberGenerator& system_rng();
/*
* Instantiable reference to the system RNG.
*/
class BOTAN_PUBLIC_API(2,0) System_RNG final : public RandomNumberGenerator
{
public:
std::string name() const override { return system_rng().name(); }
void randomize(uint8_t out[], size_t len) override { system_rng().randomize(out, len); }
void add_entropy(const uint8_t in[], size_t length) override { system_rng().add_entropy(in, length); }
bool is_seeded() const override { return system_rng().is_seeded(); }
void clear() override { system_rng().clear(); }
};
}
#endif
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