internal extern static bool PFXExportCertStoreEx( CertificateStoreHandle hStore, IntPtr pPFX, IntPtr szPassword, IntPtr pvReserved, PfxExportFlags dwFlags);
internal extern static bool CertAddCertificateContextToStore( CertificateStoreHandle hCertStore, CertificateHandle pCertContext, AddDisposition dwAddDisposition, [Out]out CertificateHandle ppStoreContext);