Alexander, Alexander Raitskin wrote > I have a signed PDF document in append mode. > > I want to add some text/image to a new revision with PdfStamper, however > everything I am trying to add makes the previous signature invalid except > for a new signature field.
Invalid according to which signature validation? If according to Adobe Reader/Acrobat: That is by design! Adobe software accepts only a very limited set of changes to a signed PDF (actually the set depends on the kind of signature applied, but even the type allowing the most changes is very restrictive.) If according to iText verification: Please supply sample documents and code to reproduce this. Regards, Michael PS: You can find a description of the allowed changes in the Adobe white paper "Adobe Acrobat 9 Digital Signatures, Changes and Improvements" and updates of it. -- View this message in context: http://itext-general.2136553.n4.nabble.com/Adding-content-in-append-mode-tp4652982p4653037.html Sent from the iText - General mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ iText-questions mailing list [email protected] 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
