Botan 2.19.1
Crypto and TLS for C&
system_rng.h
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1/*
2* System RNG interface
3* (C) 2014,2015 Jack Lloyd
4*
5* Botan is released under the Simplified BSD License (see license.txt)
6*/
7
8#ifndef BOTAN_SYSTEM_RNG_H_
9#define BOTAN_SYSTEM_RNG_H_
10
11#include <botan/rng.h>
12
13namespace Botan {
14
15/**
16* Return a shared reference to a global PRNG instance provided by the
17* operating system. For instance might be instantiated by /dev/urandom
18* or CryptGenRandom.
19*/
20BOTAN_PUBLIC_API(2,0) RandomNumberGenerator& system_rng();
21
22/*
23* Instantiable reference to the system RNG.
24*/
26 {
27 public:
28 std::string name() const override { return system_rng().name(); }
29
30 void randomize(uint8_t out[], size_t len) override { system_rng().randomize(out, len); }
31
32 void add_entropy(const uint8_t in[], size_t length) override { system_rng().add_entropy(in, length); }
33
34 bool is_seeded() const override { return system_rng().is_seeded(); }
35
36 bool accepts_input() const override { return system_rng().accepts_input(); }
37
38 void clear() override { system_rng().clear(); }
39 };
40
41}
42
43#endif
virtual bool accepts_input() const =0
virtual bool is_seeded() const =0
virtual void randomize(uint8_t output[], size_t length)=0
virtual std::string name() const =0
virtual void add_entropy(const uint8_t input[], size_t length)=0
void randomize(uint8_t out[], size_t len) override
Definition: system_rng.h:30
bool accepts_input() const override
Definition: system_rng.h:36
bool is_seeded() const override
Definition: system_rng.h:34
void clear() override
Definition: system_rng.h:38
void add_entropy(const uint8_t in[], size_t length) override
Definition: system_rng.h:32
std::string name() const override
Definition: system_rng.h:28
int(* final)(unsigned char *, CTX *)
#define BOTAN_PUBLIC_API(maj, min)
Definition: compiler.h:31
Definition: alg_id.cpp:13
RandomNumberGenerator & system_rng()
Definition: system_rng.cpp:283