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using System;
namespace Org.BouncyCastle.Crypto.Prng
{
/// <remarks>Generic interface for objects generating random bytes.</remarks>
public interface IRandomGenerator
{
/// <summary>Add more seed material to the generator.</summary>
/// <param name="seed">A byte array to be mixed into the generator's state.</param>
void AddSeedMaterial(byte[] seed);
/// <summary>Add more seed material to the generator.</summary>
/// <param name="seed">A long value to be mixed into the generator's state.</param>
void AddSeedMaterial(long seed);
/// <summary>Fill byte array with random values.</summary>
/// <param name="bytes">Array to be filled.</param>
void NextBytes(byte[] bytes);
/// <summary>Fill byte array with random values.</summary>
/// <param name="bytes">Array to receive bytes.</param>
/// <param name="start">Index to start filling at.</param>
/// <param name="len">Length of segment to fill.</param>
void NextBytes(byte[] bytes, int start, int len);
#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER
void NextBytes(Span<byte> bytes);
#endif
}
}
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