VBA to save a sheet to a password protected PDF

Question

The following saves the activesheet as a PDF:

ActiveSheet.ExportAsFixedFormat _
                               Type:=xlTypePDF, _
                               Filename:="C:\blahblah2.pdf",  _
                               Quality:=xlQualityStandard, _
                               IgnorePrintAreas:=False, _
                               OpenAfterPublish:=False

I need to be able to create a password protected PDF - is this possible using VBA without buying any additional software?

Answer 1

I used PDFsharp using VS - my project is in C# ... this free library works very well