Hi Leonard, Thank you for your answer.
My goal is to do a PDF Digital Signature on a XFA form (not a XML Digital Signature). In that case, is the checksum mandatory ? My apologies, but I really cannot see the subsection concerning the checksum calculation in the doc "xfa_spec_3_1.pdf"? Could you point me it out please? Thank you very much, Emmanuel -- View this message in context: http://itext-general.2136553.n4.nabble.com/Xfa-signature-tp2172306p3659698.html Sent from the iText - General mailing list archive at Nabble.com. ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2d-c2 _______________________________________________ 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