/src/botan/build/include/botan/system_rng.h
Line | Count | Source (jump to first uncovered line) |
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 | | |
13 | | namespace 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 | | */ |
20 | | BOTAN_PUBLIC_API(2,0) RandomNumberGenerator& system_rng(); |
21 | | |
22 | | /* |
23 | | * Instantiable reference to the system RNG. |
24 | | */ |
25 | | class BOTAN_PUBLIC_API(2,0) System_RNG final : public RandomNumberGenerator |
26 | | { |
27 | | public: |
28 | 0 | std::string name() const override { return system_rng().name(); } |
29 | | |
30 | 0 | void randomize(uint8_t out[], size_t len) override { system_rng().randomize(out, len); } |
31 | | |
32 | 0 | void add_entropy(const uint8_t in[], size_t length) override { system_rng().add_entropy(in, length); } |
33 | | |
34 | 0 | bool is_seeded() const override { return system_rng().is_seeded(); } |
35 | | |
36 | 0 | bool accepts_input() const override { return system_rng().accepts_input(); } |
37 | | |
38 | 0 | void clear() override { system_rng().clear(); } |
39 | | }; |
40 | | |
41 | | } |
42 | | |
43 | | #endif |