AuroraSupport/AuroraRuntime
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[+] Improve RNG apis. TODO: more work is needed

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This commit is contained in:
Reece Wilson 2022-02-20 20:43:37 +00:00
parent 3651c22159
commit 188e478033
4 changed files with 33 additions and 15 deletions
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24
Include/Aurora/RNG/IRandomDevice.hpp
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@ -28,25 +28,37 @@ namespace Aurora::RNG
template<typename T, int N>
inline void NextArray(T(&array)[N])
inline void NextFillArray(T(&array)[N])
{
Read(array, N * sizeof(T));
}
template<typename T>
inline void NextArray(T *array, AuUInt32 length)
inline void NextFillArray(T *array, AuUInt32 length)
{
Raed(array, length * sizeof(T));
Read(array, length * sizeof(T));
}
template<typename T>
inline T NextTmpl()
static inline T &NextFillRange(const T &items)
{
NextFillArray(items.begin(), items.end() - items.begin());
}
template<typename T>
inline T NextFillTmpl()
{
T ret {};
Read(&ret, sizeof(T));
return ret;
}
template<typename T>
inline T &NextIterator(T &begin, T &end)
{
return begin + NextIndex(AuUInt(end - begin));
}
template<typename T>
inline T &NextArray(T *items, AuUInt32 count)
{
@ -60,9 +72,9 @@ namespace Aurora::RNG
}
template<typename T>
static inline T &RngRange(const T &items)
static inline T &NextRange(const T &items)
{
return RngArray(items.begin(), items.end() - items.begin());
return NextIterator(items.begin(), items.end());
}
};

10
Include/Aurora/RNG/RNG.hpp
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@ -33,7 +33,7 @@ namespace Aurora::RNG
// Note: it is conceivable that someone may want the following templates for some cryptographic purpose
template<bool fast = true, typename T, int N>
static inline void RngArray(T(&array)[N])
static inline void RngFillArray(T(&array)[N])
{
if constexpr (fast)
{
@ -46,7 +46,7 @@ namespace Aurora::RNG
}
template<bool fast = true, typename T>
static inline void RngArray(T *array, AuUInt32 length)
static inline void RngFillArray(T *array, AuUInt32 length)
{
if constexpr (fast)
{
@ -58,6 +58,12 @@ namespace Aurora::RNG
}
}
template<bool fast = true, typename T>
static inline T &RngFillRange(const T &items)
{
return RngFillArray<fast>(items.begin(), items.end() - items.begin());
}
template<bool fast = true, typename T>
static inline T RngTmpl()
{

2
Source/RNG/RNG.cpp
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@ -261,7 +261,7 @@ namespace Aurora::RNG
static void InitFastRng()
{
AuArray<AuUInt8, 64> maxEntropy;
RngArray<false, AuUInt8>(maxEntropy.data(), 64);
RngFillArray<false, AuUInt8>(maxEntropy.data(), 64);
gWellRand = WELL_SeedRandBig64(maxEntropy);
gFastDevice = RandomUnique(RandomDef {false});
}

8
Source/RNG/RandomDevice.cpp
View File

@ -55,7 +55,7 @@ namespace Aurora::RNG
else
{
this->fast_ = {};
RNG::RngArray<false>(this->fast_.state);
RNG::RngFillArray<false>(this->fast_.state);
}
}
// secure rng requires no init -> we just passthrough to the global ReadSecureRNG function
@ -110,7 +110,7 @@ namespace Aurora::RNG
AuUInt8 RandomDevice::NextByte()
{
return NextTmpl<AuUInt8>();
return NextFillTmpl<AuUInt8>();
}
bool RandomDevice::NextBoolean()
@ -120,12 +120,12 @@ namespace Aurora::RNG
AuUInt32 RandomDevice::NextU32()
{
return NextTmpl<AuUInt32>();
return NextFillTmpl<AuUInt32>();
}
AuUInt64 RandomDevice::NextU64()
{
return NextTmpl<AuUInt64>();
return NextFillTmpl<AuUInt64>();
}
AuInt32 RandomDevice::NextInt(AuInt32 min, AuInt32 max)