I would read the Signature object to find out what the ByteRange is and what hashing algorithm was used, and then perform the same hash over the same byte range. Then take that hash value and Barcode that.
Leonard -----Original Message----- From: John_Z80 [mailto:g...@idieikon.com] Sent: Wednesday, May 13, 2009 2:36 AM To: itext-questions@lists.sourceforge.net Subject: Re: [iText-questions] BarcodePDF417 for signed PDF No, I know the PDF signature will not be valid, but for having a printed copy a Barcode 417 of the information is requested (I suppose that in another separate document) but it does not matter is only for a printed copy. The instructions says that you have to make the barcode of the digital signature, and perhaps a barcode of the document, so it can be done, (many people is making it so it IS possible) but making a Barcode of the entire document fails, (I think it has a limited space), so is there any way to make a barcode of something really BIG? How can I do this? And second question is if I can retrieve the document signature and how. Best regards. Paulo Soares-3 wrote: > > It can't be done in PDF. You can add the image later but the signature > won't cover all the document. > > Paulo > > >> -----Original Message----- >> From: John_Z80 [mailto:g...@idieikon.com] >> Sent: Tuesday, May 12, 2009 12:35 PM >> To: itext-questions@lists.sourceforge.net >> Subject: [iText-questions] BarcodePDF417 for signed PDF >> >> >> I'm trying to print a digital signed PDF with his BarcodePDF417. >> I load the pdf in my code, I know how to create the 417 code >> bar and put in >> the page with PdfStamper, BUT the information the code bar >> should contain is >> the signature of te document. >> How can I retrive the signature to make the 417 bar code? >> And the bar code information seems to have a limit so I can't >> read all the >> pdf and make the 417 bar, but I hope I can do with the >> signature information >> and this should be enough (I think). >> Can somebody put an example on how to retrieve the signature >> to convert it >> to String and use in the BarcodePDF417? >> >> >> Best regards. > > > Aviso Legal: > > Esta mensagem é destinada exclusivamente ao destinatário. Pode conter > informação confidencial ou legalmente protegida. A incorrecta transmissão > desta mensagem não significa a perca de confidencialidade. Se esta > mensagem for recebida por engano, por favor envie-a de volta para o > remetente e apague-a do seu sistema de imediato. É proibido a qualquer > pessoa que não o destinatário de usar, revelar ou distribuir qualquer > parte desta mensagem. > > > > Disclaimer: > > This message is destined exclusively to the intended receiver. It may > contain confidential or legally protected information. The incorrect > transmission of this message does not mean the loss of its > confidentiality. If this message is received by mistake, please send it > back to the sender and delete it from your system immediately. It is > forbidden to any person who is not the intended receiver to use, > distribute or copy any part of this message. > > > > > ------------------------------------------------------------------------------ > The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your > production scanning environment may not be a perfect world - but thanks to > Kodak, there's a perfect scanner to get the job done! With the NEW KODAK > i700 > Series Scanner you'll get full speed at 300 dpi even with all image > processing features enabled. http://p.sf.net/sfu/kodak-com > _______________________________________________ > iText-questions mailing list > iText-questions@lists.sourceforge.net > 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/ > -- View this message in context: http://www.nabble.com/BarcodePDF417-for-signed-PDF-tp23500871p23516223.html Sent from the iText - General mailing list archive at Nabble.com. ------------------------------------------------------------------------------ The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com _______________________________________________ iText-questions mailing list iText-questions@lists.sourceforge.net 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/ ------------------------------------------------------------------------------ The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com _______________________________________________ iText-questions mailing list iText-questions@lists.sourceforge.net 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/
