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#include "test_common.h"
#include "logger.h"
#include <cryptopp/osrng.h>
#include <cstdlib>
std::mt19937& get_random_number_engine()
{
struct Initializer
{
std::mt19937 mt;
Initializer()
{
uint32_t data[64];
const char* seed = std::getenv("SECUREFS_TEST_SEED");
if (seed && seed[0])
{
securefs::parse_hex(seed, reinterpret_cast<unsigned char*>(data), sizeof(data));
}
else
{
CryptoPP::OS_GenerateRandomBlock(
false, reinterpret_cast<unsigned char*>(data), sizeof(data));
}
INFO_LOG("Random seed: %s",
securefs::hexify(reinterpret_cast<const unsigned char*>(data), sizeof(data))
.c_str());
std::seed_seq seq(std::begin(data), std::end(data));
mt.seed(seq);
}
};
static thread_local Initializer initializer;
return initializer.mt;
}
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