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

Org.BouncyCastle.Pkcs.Pkcs12Entry

public abstract class Pkcs12Entry
Base class for PKCS#12 bag entries (private keys and certificates) carrying optional PKCS#9 bag attributes such as friendly name and local key identifier.
namespace Org.BouncyCastle.Pkcs { public abstract class Pkcs12Entry { public Asn1Encodable this[DerObjectIdentifier oid] { get; } public IEnumerable<DerObjectIdentifier> BagAttributeKeys { get; } public bool HasFriendlyName { get; } public void SetFriendlyName(string friendlyName); public bool TryGetAttribute(DerObjectIdentifier oid, out Asn1Encodable attribute); } }