53 lines
1.5 KiB
C++
53 lines
1.5 KiB
C++
/***
|
|
Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
|
|
|
|
File: RNG.hpp
|
|
Date: 2021-6-10
|
|
Author: Reece
|
|
***/
|
|
#pragma once
|
|
|
|
namespace Aurora::RNG
|
|
{
|
|
AUKN_SYM void ReadSecureRNG(void *in, AuUInt length);
|
|
|
|
template<typename T, int N>
|
|
void Read(T(&array)[N])
|
|
{
|
|
ReadSecureRNG(array, N * sizeof(T));
|
|
}
|
|
|
|
template<typename T>
|
|
void Read(T *array, AuUInt length)
|
|
{
|
|
ReadSecureRNG(array, length * sizeof(T));
|
|
}
|
|
|
|
enum class RngStringCharacters
|
|
{
|
|
eAlphaCharacters,
|
|
eAlphaNumericCharacters,
|
|
eExtendedEntropy,
|
|
MAX
|
|
};
|
|
|
|
static void RngString(char *string, AuUInt length, RngStringCharacters type = RngStringCharacters::eAlphaCharacters)
|
|
{
|
|
static std::pair<const char *, int> rngSequence[static_cast<int>(RngStringCharacters::MAX)] =
|
|
{
|
|
{"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ", 52},
|
|
{"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890", 62},
|
|
{"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890=-+!$%^*.[];:", 75}
|
|
};
|
|
|
|
ReadSecureRNG(string, length);
|
|
|
|
const auto &pair = rngSequence[static_cast<int>(type)];
|
|
|
|
for (auto i = 0; i < length; i++)
|
|
{
|
|
auto idx = static_cast<float>(reinterpret_cast<AuUInt8 *>(string)[i]) / 255.f * static_cast<float>(pair.second);
|
|
string[i] = pair.first[static_cast<int>(idx)];
|
|
}
|
|
}
|
|
} |