50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
#ifndef _random__hpp__included__
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#define _random__hpp__included__
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#include <string>
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#include <vector>
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#include <stdexcept>
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#include "library/string.hpp"
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/**
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* \brief Get random hexes
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*
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* Get string of random hex characters of specified length.
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*
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* \param length The number of hex characters to return.
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* \return The random hexadecimal string.
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* \throws std::bad_alloc Not enough memory.
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*/
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std::string get_random_hexstring(size_t length) throw(std::bad_alloc);
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/**
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* \brief Set random seed
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*
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* This function sets the random seed to use.
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*
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* \param seed The value to use as seed.
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* \throw std::bad_alloc Not enough memory.
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*/
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void set_random_seed(const std::string& seed) throw(std::bad_alloc);
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/**
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* \brief Set random seed to (hopefully) unique value
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*
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* This function sets the random seed to value that should only be used once. Note, the value is not necressarily
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* crypto-secure, even if it is unique.
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*
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* \throw std::bad_alloc Not enough memory.
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*/
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void set_random_seed() throw(std::bad_alloc);
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/**
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* Mix some entropy.
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*/
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void random_mix_timing_entropy();
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/**
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* 256 bits of as high quality entropy as possible.
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*/
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void highrandom_256(uint8_t* buf);
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#endif
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