<PackageReference Include="BouncyCastle.Cryptography" Version="2.7.0" />

Org.BouncyCastle.Tls.Crypto.Tls13Verifier

public interface Tls13Verifier
namespace Org.BouncyCastle.Tls.Crypto { public interface Tls13Verifier { Stream Stream { get; } bool VerifySignature(byte[] signature); } }