ydb/util/random/entropy.h

#pragma once

class TBuffer;
class IInputStream;

/*
 * fast entropy pool, based on good prng, can lock for some time
 * initialized with some bits from system entropy pool
 * think as /dev/urandom replacement
 */
IInputStream& EntropyPool();

/*
 * fast(non-blocking) entropy pool, useful for seeding PRNGs
 */
IInputStream& Seed();

/*
 * Re-initialize entropy pool - useful after forking in multi-process programs.
 */
void ResetEntropyPool();