<PackageReference Include="BouncyCastle.Cryptography" Version="2.6.1" />

Org.BouncyCastle.Crypto.Modes.Gcm.IGcmExponentiator

public interface IGcmExponentiator
namespace Org.BouncyCastle.Crypto.Modes.Gcm { public interface IGcmExponentiator { void Init(byte[] x); void ExponentiateX(long pow, byte[] output); } }