#ifndef FORTUNA_GENERATOR_H
#define FORTUNA_GENERATOR_H

#include <string>
#include <cstring>
#include <tuple>

struct G_state;

/* initializes generator */
G_state *initialize_generator();

auto do_crypto(int64_t k, unsigned __int128 ctr) -> std::string;

auto reseed(G_state G, const std::string& s) -> std::tuple<G_state, unsigned __int128>;

auto do_sha(int64_t key_with_seed) -> int64_t;

auto generate_blocks(G_state G, int k_blocks) -> std::tuple<std::string, G_state>;

/* returns output of 0 <= n <= 2^20 bytes */
auto generate_random_data(G_state G, int n) -> std::tuple<std::string, G_state>;

#endif//FORTUNA_GENERATOR_H