There's nothing in the pdf reference that hints the reader on the the action to take. You can send me the 2 pdfs for inspection.
Best Regards, Paulo Soares > -----Original Message----- > From: Guillaume Allée [mailto:[EMAIL PROTECTED] > Sent: Monday, October 18, 2004 9:14 AM > To: Paulo Soares > Cc: [EMAIL PROTECTED] > Subject: RE: [iText-questions] Add a checksum in a pdf > > I am not sure it is a reader feature: let me explain (clearly > i hope) my > pb. > > I have 2 pdf files: > - certified.pdf (which has been certified using adobe > professional) > - itext_signed.pdf (which has been signed using your itext) > > I modify 1 byte in each file using an hex editor. > > I open the 2 files with adobe Reader 6: > - with the certified.pdf (on opening, a window is > displayed saying that > the certification is invalid see attachement screenshot) > - with the itext_signed.pdf : there is no such window. > The user has to > go to the signature tab to see that the document has been tampered. > > That is why i don t think this is a reader feature. > > What do you think ? > > BR > > Guillaume > > Le ven 15/10/2004 à 17:54, Paulo Soares a écrit : > > That's a feature of the reader. > > > > Best Regards, > > Paulo Soares > > > > > -----Original Message----- > > > From: Guillaume Allée [mailto:[EMAIL PROTECTED] > > > Sent: Friday, October 15, 2004 4:40 PM > > > To: Paulo Soares > > > Cc: [EMAIL PROTECTED] > > > Subject: RE: [iText-questions] Add a checksum in a pdf > > > > > > Hi, > > > > > > I managed to add a self signed signature in my pdf document. > > > > > > But the pdf reader (adobe reader 6) does not warn the user on file > > > opening when the signature is invalid : the user has to go in the > > > signature tab to see that the signature is (in)valid. > > > > > > With adobe professional, i can certify a document, if it is > > > altered, the > > > user is warned that the document has been tampered when > he opens the > > > pdf. Is it possible to do that with itext-paulo ? > > > > > > thanks > > > > > > Le jeu 07/10/2004 à 16:18, Paulo Soares a écrit : > > > > See http://itextpdf.sourceforge.net/howtosign.html > > > > > > > > > -----Original Message----- > > > > > From: [EMAIL PROTECTED] > > > > > [mailto:[EMAIL PROTECTED] On > > > > > Behalf Of Guillaume Allée > > > > > Sent: Thursday, October 07, 2004 11:45 AM > > > > > To: [EMAIL PROTECTED] > > > > > Subject: [iText-questions] Add a checksum in a pdf > > > > > > > > > > Hi, > > > > > > > > > > > > > > > I wonder if it is possible to add a checksum in a pdf file so > > > > > that when > > > > > a reader (adobe acrobat for instance) opens the file, > the user is > > > > > notified if the checksum is not matched ? > > > > > > > > > > If yes, how can it be done with itext ? > > > > > > > > > > > > > > > Thanks. > > > > > > > > > > Guillaume > > > > > -- > > > > > Allée Guillaume > > > > > Development Engineer > > > > > > > > > > ATCHIK > > > > > 8, Port Saint Sauveur > > > > > 31000 Toulouse > > > > > France > > > > > > > > > > E-mail: [EMAIL PROTECTED] > > > > > Web: http://www.atchik.com > > > > > tel: +33 5 34 31 77 22 > > > > > fax: +33 5 34 31 70 71 > > > > > Mob: +33 6 75 08 52 38 > > > > > > > > > > > > > > > ------------------------------------------------------- > > > > > This SF.net email is sponsored by: IT Product Guide on > > > > > ITManagersJournal > > > > > Use IT products in your business? Tell us what you think of > > > > > them. Give us > > > > > Your Opinions, Get Free ThinkGeek Gift Certificates! Click to > > > > > find out more > > > > > http://productguide.itmanagersjournal.com/guidepromo.tmpl > > > > > _______________________________________________ > > > > > iText-questions mailing list > > > > > [EMAIL PROTECTED] > > > > > https://lists.sourceforge.net/lists/listinfo/itext-questions > > > > > > > > -- > > > Allée Guillaume > > > Development Engineer > > > > > > ATCHIK > > > 8, Port Saint Sauveur > > > 31000 Toulouse > > > France > > > > > > E-mail: [EMAIL PROTECTED] > > > Web: http://www.atchik.com > > > tel: +33 5 34 31 77 22 > > > fax: +33 5 34 31 70 71 > > > Mob: +33 6 75 08 52 38 > > > > ------------------------------------------------------- This SF.net email is sponsored by: IT Product Guide on ITManagersJournal Use IT products in your business? Tell us what you think of them. Give us Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more http://productguide.itmanagersjournal.com/guidepromo.tmpl _______________________________________________ iText-questions mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/itext-questions
