<PackageReference Include="System.Security.Cryptography.Pkcs" Version="11.0.0-rc.2.26504.105" />

System.Security.Cryptography.Pkcs.Pkcs12SecretBag

public sealed class Pkcs12SecretBag : Pkcs12SafeBag
Represents the SecretBag from PKCS#12, a container whose contents are arbitrary data with a type identifier. This class cannot be inherited.
namespace System.Security.Cryptography.Pkcs { public sealed class Pkcs12SecretBag : Pkcs12SafeBag { public ReadOnlyMemory<byte> SecretValue { get; } public Oid GetSecretType(); } }