<PackageReference Include="BouncyCastle.Cryptography" Version="2.5.1" />

Org.BouncyCastle.Pkcs.Pkcs12Utilities

public class Pkcs12Utilities
namespace Org.BouncyCastle.Pkcs { public class Pkcs12Utilities { public static byte[] ConvertToDefiniteLength(byte[] berPkcs12File); public static byte[] ConvertToDefiniteLength(byte[] berPkcs12File, char[] passwd); public Pkcs12Utilities(); } }