The correct way to do that with PDF is to use a Certifying Signature at creation time.
Leonard On 4/27/15, 3:15 AM, "AndreaC." <andrea.c...@gmail.com> wrote: >Hi Leonard, thanks for your response. >This document is an official document, created and identified by System with >his HASH digest. >Content of this document can't be modified, but user should be able to sign >it and re-upload on system. > >The signature should be a CADES or PADES signature, and in case a CADES >signature, the system perform the hash matching check. > >Andrea > > > > > > > >-- >View this message in context: >http://itext.2136553.n4.nabble.com/sign-a-prtected-PDF-tp4660802p4660806.html >Sent from the iText mailing list archive at Nabble.com. > >------------------------------------------------------------------------------ >One dashboard for servers and applications across Physical-Virtual-Cloud >Widest out-of-the-box monitoring support with 50+ applications >Performance metrics, stats and reports that give you Actionable Insights >Deep dive visibility with transaction tracing using APM Insight. >http://ad.doubleclick.net/ddm/clk/290420510;117567292;y >_______________________________________________ >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 ------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y _______________________________________________ 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
