In theory Acrobat doesn't care but in practice, at least with Acrobat 6, if the byte range has more than one exclude section it always fails. Other Acrobat plug-in may behave differently but with the standard crypto that's what I see.
----- Original Message ----- From: "Leonard Rosenthol" <[EMAIL PROTECTED]> To: "Paulo Soares" <[EMAIL PROTECTED]>; "Juan Sanchez" <[EMAIL PROTECTED]>; <itext-questions@lists.sourceforge.net> Sent: Thursday, August 11, 2005 8:45 PM Subject: Re: [iText-questions] Add signatures in a existing blank signature > At 12:36 PM 8/11/2005, Paulo Soares wrote: > >As I said, if you want Acrobat to verify the signature you can only exclude > >the Contents from the byte range. > > Assuming that is what is being hashed and marked as such. > > You can actually exclude anything you want - and as long as > your byte ranges and hashes match, Acrobat doesn't care what you've excluded. > > It is, however, a potential security hole to exclude > anything else - but there may be good reason. > > > Leonard > > > > -------------------------------------------------------------------------- - > Leonard Rosenthol <mailto:[EMAIL PROTECTED]> > Chief Technical Officer <http://www.pdfsages.com> > PDF Sages, Inc. 215-938-7080 (voice) > 215-938-0880 (fax) > ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf _______________________________________________ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions
