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Use modern function for getting random numbers on Windows

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The previous `RtlGenRandom()` just redirects to `ProcessPrng()` according to "The Windows 10
random number generation infrastructure" whitepaper from MS.

`ProcessPrng()` is also the de facto PRNG for Rust lang:
aa13fa5882/src/windows.rs (L3C1-L22C81)
And for golang:
https://go-review.googlesource.com/c/go/+/536235
This commit is contained in:
Chocobo1 2024-09-12 16:56:15 +08:00
parent dbef6da544
commit 3058158b69
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GPG key ID: 210D9C873253A68C
1 changed files with 11 additions and 18 deletions
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29
src/base/utils/random.cpp
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@ -33,9 +33,10 @@
#include <QtLogging>
#include <QtSystemDetection>
#ifdef Q_OS_WIN
#if defined(Q_OS_WIN)
#include <windows.h>
#include <ntsecapi.h>
#include "base/global.h"
#include "base/utils/os.h"
#elif defined(Q_OS_LINUX)
#include <cerrno>
#include <cstring>
@ -46,17 +47,9 @@
#include <cstring>
#endif
#include <QString>
#include "base/global.h"
#ifdef Q_OS_WIN
#include "base/utils/os.h"
#endif
namespace
{
#ifdef Q_OS_WIN
#if defined(Q_OS_WIN)
class RandomLayer
{
// need to satisfy UniformRandomBitGenerator requirements
@ -64,10 +57,10 @@ namespace
using result_type = uint32_t;
RandomLayer()
: m_rtlGenRandom {Utils::OS::loadWinAPI<PRTLGENRANDOM>(u"Advapi32.dll"_s, "SystemFunction036")}
: m_processPrng {Utils::OS::loadWinAPI<PPROCESSPRNG>(u"BCryptPrimitives.dll"_s, "ProcessPrng")}
{
if (!m_rtlGenRandom)
qFatal("Failed to load RtlGenRandom()");
if (!m_processPrng)
qFatal("Failed to load ProcessPrng().");
}
static constexpr result_type min()
@ -83,16 +76,16 @@ namespace
result_type operator()()
{
result_type buf = 0;
const bool result = m_rtlGenRandom(&buf, sizeof(buf));
const bool result = m_processPrng(reinterpret_cast<PBYTE>(&buf), sizeof(buf));
if (!result)
qFatal("RtlGenRandom() failed");
qFatal("ProcessPrng() failed.");
return buf;
}
private:
using PRTLGENRANDOM = BOOLEAN (WINAPI *)(PVOID, ULONG);
const PRTLGENRANDOM m_rtlGenRandom;
using PPROCESSPRNG = BOOL (WINAPI *)(PBYTE, SIZE_T);
const PPROCESSPRNG m_processPrng;
};
#elif defined(Q_OS_LINUX)
class RandomLayer