[C#]
    byte[] SubjectKeyIdentifier;

[VB.NET]
    Property SubjectKeyIdentifier As Byte()

[Pascal]
    property SubjectKeyIdentifier : string;

[VB6]
    Property IElCertificateLookupX.SubjectKeyIdentifier As Variant

[ActiveX]
    HRESULT _stdcall IElCertificateLookupX.SubjectKeyIdentifier([in] VARIANT Value );
    HRESULT _stdcall IElCertificateLookupX.SubjectKeyIdentifier([out, retval] VARIANT * Value );

[DLL]
    not implemented;