9#ifndef BOTAN_RANDOM_NUMBER_GENERATOR_H_
10#define BOTAN_RANDOM_NUMBER_GENERATOR_H_
12#include <botan/concepts.h>
13#include <botan/exceptn.h>
14#include <botan/mutex.h>
15#include <botan/secmem.h>
52 void randomize(std::span<uint8_t> output) { this->fill_bytes_with_input(output, {}); }
75 void add_entropy(std::span<const uint8_t> input) { this->fill_bytes_with_input({}, input); }
83 requires std::is_standard_layout<T>::value && std::is_trivial<T>::value
85 this->add_entropy(
reinterpret_cast<const uint8_t*
>(&t),
sizeof(
T));
105 this->fill_bytes_with_input(output, input);
109 this->randomize_with_input(std::span(output, output_len), std::span(input, input_len));
126 void randomize_with_ts_input(std::span<uint8_t> output);
129 this->randomize_with_ts_input(std::span(output, output_len));
135 virtual std::string
name()
const = 0;
179 void random_vec(std::span<uint8_t> v) { this->randomize(v); }
189 template <concepts::resizable_
byte_buffer T>
203 template <concepts::resizable_
byte_buffer T = secure_vector<u
int8_t>>
204 requires std::default_initializable<T>
207 random_vec(result, bytes);
219 this->fill_bytes_with_input(std::span(&b, 1), {});
229 uint8_t b = this->next_byte();
231 b = this->next_byte();
281 std::string
name()
const override {
return "Null_RNG"; }
284 void fill_bytes_with_input(std::span<uint8_t> output, std::span<const uint8_t> )
override;
bool accepts_input() const override
std::string name() const override
bool is_seeded() const override
void randomize(std::span< uint8_t > output)
virtual bool accepts_input() const =0
T random_vec(size_t bytes)
virtual ~RandomNumberGenerator()=default
RandomNumberGenerator()=default
void add_entropy(std::span< const uint8_t > input)
void randomize(uint8_t output[], size_t length)
uint8_t next_nonzero_byte()
void random_vec(T &v, size_t bytes)
RandomNumberGenerator & operator=(const RandomNumberGenerator &rng)=delete
virtual bool is_seeded() const =0
void randomize_with_ts_input(uint8_t output[], size_t output_len)
void add_entropy(const uint8_t input[], size_t length)
virtual std::string name() const =0
void add_entropy_T(const T &t)
void random_vec(std::span< uint8_t > v)
virtual void fill_bytes_with_input(std::span< uint8_t > output, std::span< const uint8_t > input)=0
void randomize_with_input(std::span< uint8_t > output, std::span< const uint8_t > input)
RandomNumberGenerator(const RandomNumberGenerator &rng)=delete
void randomize_with_input(uint8_t output[], size_t output_len, const uint8_t input[], size_t input_len)
int(* final)(unsigned char *, CTX *)
#define BOTAN_PUBLIC_API(maj, min)
#define BOTAN_RNG_RESEED_DEFAULT_TIMEOUT
#define BOTAN_RNG_RESEED_POLL_BITS
RandomNumberGenerator RNG