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View Thread: ASP.NET and iTextSharp (free PDF Generator for .NET)
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    Hi Guys,

    I'm new to iTextSharp (and general PDF devel).
    Can anyboy give me some "startup" how to digital sign a PDF document?
    As far as I know signed PDFs there are two kinds of.
    One is simply signed - and the other one is a "Certified Document".

    In Acrobat I get asked (when I am the first signer) if I want to certify the document.

    And furtheron  - there tow kinds of signing - one is with a visible signature - and one is without it.

    My primary goal is to
    a.) open an existing PDF
    b.) select a certificate from the users CertStore (CryptoAPI)
    c.) create a "Certified document" with the selected key
    d.) place a visula representation of it on the last page of the document.