On 1/14/13 2:10 PM, "mkl" <m...@wir-sind-cool.org> wrote: >Leonard Rosenthol-3 wrote >> The problem is that this is an XFA-based PDF (aka dynamic PDF). >> >> As such, you can only sign this using either standard XFA Signatures or, >> if you require PAdES, then PAdES Part 5 (not parts 2-4). > >Out of curiosity, can this incompatibility (dynamic PDF <-> AcroForm >signature) somehow be concluded from ISO 32000-1?
Not really, because the handling of XFA-based PDFs isn't well covered in ISO 32000-1, because it wasn't in Adobe PDF 1.7 (from which ISO 32K is derived). However, ISO 32000-2 does go into a bit more detail about XFA handling, though not specific about signatures. >I don't remember any such restriction in the ISO standard. It's not a restriction, it's an implementation/design thing in terms of Signatures. You should read the document about XFA Signatures at <http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/devnet/acrob at/pdfs/digisig_in_XFA.pdf>. >Or is a XFA-based PDF not to be considered an ISO 32000-1 document? An XFA-based PDF is 100% ISO 32000 compliant. No questions about it! HOWEVER, that doesn't means that you can treat it in the same way as you treat a non-XFA-based PDF. A conforming viewer reacts to them very differently. It's not unlike how a PDF with a Collection dictionary will be displayed quite differently by a PDF viewer (as described in ISO 32K-1) than one w/o such a dictionary. As such, certainly modifications one make make to a non-XFA-based PDF will not be recognized by a XFA-based-PDF-aware viewer. Leonard ------------------------------------------------------------------------------ Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122412 _______________________________________________ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions iText(R) is a registered trademark of 1T3XT BVBA. Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php
