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Add perf counter data to GetStrongRandBytes state in scheduler

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This commit is contained in:
Matt Corallo 2017-05-22 16:01:52 -04:00
parent 399fb8f2d0
commit 888cce57a6
3 changed files with 30 additions and 0 deletions
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17
src/random.cpp
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@ -203,6 +203,23 @@ void GetRandBytes(unsigned char* buf, int num)
}
}
static void AddDataToRng(void* data, size_t len);
void RandAddSeedSleep()
{
int64_t nPerfCounter1 = GetPerformanceCounter();
std::this_thread::sleep_for(std::chrono::milliseconds(1));
int64_t nPerfCounter2 = GetPerformanceCounter();
// Combine with and update state
AddDataToRng(&nPerfCounter1, sizeof(nPerfCounter1));
AddDataToRng(&nPerfCounter2, sizeof(nPerfCounter2));
memory_cleanse(&nPerfCounter1, sizeof(nPerfCounter1));
memory_cleanse(&nPerfCounter2, sizeof(nPerfCounter2));
}
static std::mutex cs_rng_state;
static unsigned char rng_state[32] = {0};
static uint64_t rng_counter = 0;