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Better UUID randomness

This commit is contained in:
David Marcec 2018-08-12 02:31:43 +10:00
parent 448290bee4
commit 10f494eefe
1 changed files with 7 additions and 2 deletions
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9
src/core/hle/service/acc/profile_manager.h
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@ -5,6 +5,7 @@
#pragma once #pragma once
#include <array> #include <array>
#include <random>
#include "boost/optional.hpp" #include "boost/optional.hpp"
#include "common/common_types.h" #include "common/common_types.h"
#include "common/swap.h" #include "common/swap.h"
@ -38,8 +39,12 @@ struct UUID {
// TODO(ogniK): Properly generate uuids based on RFC-4122 // TODO(ogniK): Properly generate uuids based on RFC-4122
const UUID& Generate() { const UUID& Generate() {
uuid[0] = (static_cast<u64>(std::rand()) << 32) | std::rand(); std::random_device device;
uuid[1] = (static_cast<u64>(std::rand()) << 32) | std::rand(); std::mt19937 gen(device());
std::uniform_int_distribution<uint64_t> distribution(1,
std::numeric_limits<uint64_t>::max());
uuid[0] = distribution(gen);
uuid[1] = distribution(gen);
return *this; return *this;
} }