It can't be done, you can't alter the signature without making it invalid. Paulo
----- Original Message ----- From: "Inma Marín" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Tuesday, October 14, 2008 4:06 PM Subject: [iText-questions] How to add a Timestamp to an existing PDFSignature Hello, I would like to know how to add a Timestamp to a PDF Signature with IText. The situation is the following: I open a PDF document to sign it, using IText and, after that, I close it. After some time (for example, a day), I need to open the signed PDF document and add a timestamp to the previously generated signature. Could anybody be so kind as to tell me how can I do it, please? Thank you very much in advance. ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ 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
