<PackageReference Include="BouncyCastle.Cryptography" Version="2.3.1" />

IKeyUnwrapper

public interface IKeyUnwrapper
Base interface for a key unwrapper.
namespace Org.BouncyCastle.Crypto { public interface IKeyUnwrapper { object AlgorithmDetails { get; } IBlockResult Unwrap(byte[] cipherText, int offset, int length); } }