15 lines
532 B
C++
15 lines
532 B
C++
#pragma once
|
|
#include <string>
|
|
|
|
class RandomNumberGenerator
|
|
{
|
|
private:
|
|
//主方案：OpenSSL，安全随机数，有极小概率失败
|
|
static bool FillWithOpenSSLRandom(unsigned char* dst, size_t len) noexcept;
|
|
//备用方案：std::mt19937_64/时间戳伪随机数，不怎么安全但是一定有数
|
|
static bool FillWithSTDMT19937_64(unsigned char* dst, size_t len) noexcept;
|
|
static std::string Bytes2HexString(const unsigned char* data, size_t len) noexcept;
|
|
|
|
public:
|
|
static std::string SecureRandomHex(size_t bytes);
|
|
}; |