<PackageReference Include="BouncyCastle.Cryptography" Version="2.3.0" />

Org.BouncyCastle.Tls.Crypto.TlsStreamSigner

public interface TlsStreamSigner
namespace Org.BouncyCastle.Tls.Crypto { public interface TlsStreamSigner { Stream Stream { get; } byte[] GetSignature(); } }