namespace Org.BouncyCastle.Crypto.Agreement.Kdf { public sealed class ECDHKekGenerator : IDerivationFunction { public IDigest Digest { get; } public ECDHKekGenerator(IDigest digest); public void Init(IDerivationParameters param); public int GenerateBytes(byte[] outBytes, int outOff, int length); public int GenerateBytes(Span<byte> output); } }