The normal way to do this would be to have multiple SignerInfo's inside a single signature - this is called parallel signatures. PDF, however, does not support this - and in fact, ETSI TS 102778 (PAdES) explicitly forbids it.
Michael already commented on the byte range issue. Leonard -----Original Message----- From: Glam [mailto:[email protected]] Sent: Tuesday, December 01, 2009 1:36 AM To: [email protected] Subject: [iText-questions] Multiple signatures and multiple revisions Hi, I've read the following thread http://old.nabble.com/Re:-multiple-signatures-td3725560.html , but there is something more I'd like to ask. It is obvious, that if the document has 2 revisions, the first signature doesn't cover the second revision. However, is it possible (according to the PDF standard, and in iText) to have two signatures for the same revision? (I have set a certification level to CERTIFIED_FORM_FILLING_AND_ANNOTATIONS). The point is that the document is created once and is not altered at all, except for adding the signatures. -- View this message in context: http://old.nabble.com/Multiple-signatures-and-multiple-revisions-tp26536564p26536564.html Sent from the iText - General mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Join us December 9, 2009 for the Red Hat Virtual Experience, a free event focused on virtualization and cloud computing. Attend in-depth sessions from your desk. Your couch. Anywhere. http://p.sf.net/sfu/redhat-sfdev2dev _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions Buy the iText book: http://www.1t3xt.com/docs/book.php Check the site with examples before you ask questions: http://www.1t3xt.info/examples/ You can also search the keywords list: http://1t3xt.info/tutorials/keywords/ ------------------------------------------------------------------------------ Join us December 9, 2009 for the Red Hat Virtual Experience, a free event focused on virtualization and cloud computing. Attend in-depth sessions from your desk. Your couch. Anywhere. http://p.sf.net/sfu/redhat-sfdev2dev _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions Buy the iText book: http://www.1t3xt.com/docs/book.php Check the site with examples before you ask questions: http://www.1t3xt.info/examples/ You can also search the keywords list: http://1t3xt.info/tutorials/keywords/
