package com.google.bitcoin.bouncycastle.crypto.prng; /** * Generic interface for objects generating random bytes. */ public interface RandomGenerator { /** * Add more seed material to the generator. * * @param seed a byte array to be mixed into the generator's state. */ void addSeedMaterial(byte[] seed); /** * Add more seed material to the generator. * * @param seed a long value to be mixed into the generator's state. */ void addSeedMaterial(long seed); /** * Fill bytes with random values. * * @param bytes byte array to be filled. */ void nextBytes(byte[] bytes); /** * Fill part of bytes with random values. * * @param bytes byte array to be filled. * @param start index to start filling at. * @param len length of segment to fill. */ void nextBytes(byte[] bytes, int start, int len); }