internal static extern bool CertGetCertificateChain(
[In] SafeChainEngineHandle hChainEngine,
[In] SafeCertContextHandle pCertContext,
[In] ref FILETIME pTime,
[In] SafeCertStoreHandle hAdditionalStore,
[In] ref CERT_CHAIN_PARA pChainPara,
[In] uint dwFlags,
[In] IntPtr pvReserved,
[In, Out] ref SafeX509ChainHandle ppChainContext);
internal static extern bool CertCreateCertificateChainEngine(
[In] IntPtr pConfig, // PCERT_CHAIN_ENGINE_CONFI
[Out] out SafeChainEngineHandle phChainEngine); // HCERTCHAINENGINE