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#include <plog/Init.h>
#include <plog/Log.h>
#include <openssl/evp.h>
#include <openssl/rand.h>
#include <openssl/crypto.h>
#include "nostr_secure_rng.hpp"
using namespace std;
using namespace nostr::cryptography;
void NostrSecureRng::fill(void* buffer, size_t length)
{
if (RAND_bytes((uint8_t*)buffer, length) != 1)
{
//TODO throw runtime exception
PLOG_ERROR << "Failed to generate random bytes";
}
}
inline void NostrSecureRng::fill(vector<uint8_t>& buffer)
{
fill(buffer.data(), buffer.size());
}
void NostrSecureRng::reseed(uint32_t bufferSize)
{
int rc = RAND_load_file("/dev/random", bufferSize);
if (rc != bufferSize)
{
PLOG_WARNING << "Failed to reseed the RNG with /dev/random, falling back to /dev/urandom.";
RAND_poll();
}
}
void NostrSecureRng::zero(void* buffer, size_t length)
{
OPENSSL_cleanse(buffer, length);
}
inline void NostrSecureRng::zero(vector<uint8_t>& buffer)
{
zero(buffer.data(), buffer.size());
}
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