<PackageReference Include="BouncyCastle.Cryptography" Version="2.6.2" />

IVerifierFactory

public interface IVerifierFactory
Base interface for operators that serve as stream-based signature verifiers.
namespace Org.BouncyCastle.Crypto { public interface IVerifierFactory { object AlgorithmDetails { get; } IStreamCalculator<IVerifier> CreateCalculator(); } }