The problem is the <</NeedAppearances true>> in the acroforms dictionary. If it's not there the signature will appear.
Paulo > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of Andreas Homrighausen > Sent: Tuesday, May 02, 2006 7:38 AM > To: [email protected] > Subject: Re: [iText-questions] Signing pdf documents > containing forms does not work-Sorry First one without content?! > > Hi! > Thank you all for your help! :) > I've installed Foxit PDF Reader and this tool shows the signature! > It's hard to believe but this strange signature-behaviour indicates a > bug in Acrobat?! > The signature is there but Acrobat tools do not show it :( > > Andreas > > Paulo Soares schrieb: > > >This is really strange. The signature is in the PDF but > after reading it > >with Acrobat the signature disappears from the doc, no trace > of it. I'll > >need to think a bit more about this. > > > >Paulo > > > > > > > >>-----Original Message----- > >>From: [EMAIL PROTECTED] > >>[mailto:[EMAIL PROTECTED] On > >>Behalf Of Andreas Homrighausen > >>Sent: Friday, April 28, 2006 12:54 PM > >>To: [email protected] > >>Cc: [EMAIL PROTECTED] > >>Subject: Re: [iText-questions] Signing pdf documents > >>containing forms does not work-Sorry First one without content?! > >> > >>Thank you very much! :-) > >>Attached you find four pdf-Files: > >>Empty page, signed empty page, page with one form and this > >>one signed... > >> > >>Andreas > >> > >>Paulo Soares schrieb: > >> > >> > >> > >>>It would help to post the original pdf, the pdf with the > form and the > >>>signed pdf. > >>> > >>>Paulo > >>> > >>> > >>> > >>> > >>> > >>>>-----Original Message----- > >>>>From: [EMAIL PROTECTED] > >>>>[mailto:[EMAIL PROTECTED] On > >>>>Behalf Of [EMAIL PROTECTED] > >>>>Sent: Friday, April 28, 2006 11:57 AM > >>>>To: [email protected] > >>>>Cc: [EMAIL PROTECTED] > >>>>Subject: [iText-questions] Signing pdf documents containing > >>>>forms does not work-Sorry First one without content?! > >>>> > >>>>Hello all. > >>>> > >>>>I've written a java-method signing pdf-documents (which > are created > >>>>by the tool scribus) using itext. With standard pdf documents > >>>>no problems... But if the scribus pdf contains only one form, > >>>>something went wrong. The resulting signed pdf doesn't show the > >>>>signature although it is in the "pdf-code" (Opened with > >>>> > >>>> > >>word-pad ;-) ) > >> > >> > >>>>Even using the setFormFlattening(true) does not help... > >>>>Surprisingly the PDF-Analyzer 2.5 preview-mode shows the digital > >>>>signature but all other tools don't. > >>>> > >>>>Here's the code: > >>>> > >>>>public static void signDocument(String zertifikat, String > >>>>passphrase, String > >>>>inputFile, String outputFile, String reason, String location) { > >>>> > >>>> try { > >>>> KeyStore ks = KeyStore.getInstance("pkcs12"); > >>>> ks.load(new FileInputStream(zertifikat), > >>>>passphrase.toCharArray()); > >>>> String alias = (String)ks.aliases().nextElement(); > >>>> PrivateKey key = (PrivateKey)ks.getKey(alias, > >>>>passphrase.toCharArray()); > >>>> Certificate[] chain = ks.getCertificateChain(alias); > >>>> PdfReader reader = new PdfReader(inputFile); > >>>> FileOutputStream fout = new > FileOutputStream(outputFile); > >>>> PdfStamper stp = > >>>>PdfStamper.createSignature(reader, fout, ''); > >>>> PdfSignatureAppearance sap = > >>>> > >>>> > >>stp.getSignatureAppearance(); > >> > >> > >>>> sap.setCrypto(key, chain, null, > >>>>PdfSignatureAppearance.WINCER_SIGNED); > >>>> sap.setReason(reason); > >>>> sap.setLocation(location); > >>>> sap.setVisibleSignature(new > >>>>Rectangle(450,700,550,800), 1, null); > >>>> stp.close(); > >>>> } catch (Exception e) { > >>>> System.out.println(e); > >>>> } > >>>> } > >>>> > >>>>Scribus -> new empty page -> pdf -> signing -> signed pdf > works fine > >>>>Scribus -> new empty page -> Insert form -> pdf -> signing -> > >>>>signed pdf does > >>>>not work, > >>>>same configurations... > >>>> > >>>> > >>>>Any ideas? > >>>>Thank you very much! > >>>> > >>>>Greetings from Ol' Germany, > >>>>Andreas > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>>------------------------------------------------------- > >>>>Using Tomcat but need to do more? Need to support web > >>>>services, security? > >>>>Get stuff done quickly with pre-integrated technology to make > >>>>your job easier > >>>>Download IBM WebSphere Application Server v.1.0.1 based on > >>>>Apache Geronimo > >>>>http://sel.as-us.falkag.net/sel?cmd=k&kid0709&bid&3057&dat1642 > >>>>_______________________________________________ > >>>>iText-questions mailing list > >>>>[email protected] > >>>>https://lists.sourceforge.net/lists/listinfo/itext-questions > >>>> > >>>> > >>>> > >>>> > >>>> > >>>------------------------------------------------------- > >>>Using Tomcat but need to do more? Need to support web > >>> > >>> > >>services, security? > >> > >> > >>>Get stuff done quickly with pre-integrated technology to > >>> > >>> > >>make your job easier > >> > >> > >>>Download IBM WebSphere Application Server v.1.0.1 based on > >>> > >>> > >>Apache Geronimo > >> > >> > >>>http://sel.as-us.falkag.net/sel?cmd=k&kid0709&bid&3057&dat1642 > >>>_______________________________________________ > >>>iText-questions mailing list > >>>[email protected] > >>>https://lists.sourceforge.net/lists/listinfo/itext-questions > >>> > >>> > >>> > >>> > > > > > >------------------------------------------------------- > >Using Tomcat but need to do more? Need to support web > services, security? > >Get stuff done quickly with pre-integrated technology to > make your job easier > >Download IBM WebSphere Application Server v.1.0.1 based on > Apache Geronimo > >http://sel.as-us.falkag.net/sel?cmd=k&kid0709&bid&3057&dat1642 > >_______________________________________________ > >iText-questions mailing list > >[email protected] > >https://lists.sourceforge.net/lists/listinfo/itext-questions > > > > > > > > ------------------------------------------------------- > Using Tomcat but need to do more? Need to support web > services, security? > Get stuff done quickly with pre-integrated technology to make > your job easier > Download IBM WebSphere Application Server v.1.0.1 based on > Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&; > dat=121642 > _______________________________________________ > iText-questions mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/itext-questions > ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid0709&bid&3057&dat1642 _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions
