dolphin/Source/Core/Common/Random.h
Léo Lam fff1db9730 Common: Add Random utilities
This makes it easier to generate random numbers or fill a buffer with
random data in a cryptographically secure way.

This also replaces existing usages of RNG functions in the codebase:

* <random> is pretty hard to use correctly, and std::random_device does
  not give enough guarantees about its results (it's
  implementation-defined, non cryptographically secure and could be
  deterministic on some platforms).
  Doing things correctly is error prone and verbose.

* rand() is terrible and should not be used especially in crypto code.
2018-05-31 17:54:43 +02:00

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C++

// Copyright 2018 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#pragma once
#include <cstddef>
#include "Common/CommonTypes.h"
namespace Common::Random
{
/// Fill `buffer` with random bytes using a cryptographically secure pseudo-random number generator.
void Generate(void* buffer, std::size_t size);
} // namespace Common::Random