Thanks
-------- Original-Nachricht --------
Datum: Fri, 23 Feb 2007 15:15:50 -0000
Von: "Paulo Soares" <[EMAIL PROTECTED]>
An: "Post all your questions about iText here" 
<[email protected]>
CC: 
Betreff: Re: [iText-questions] sign a PDF

> Select the windows handler and it will work. You can also sign with the
> PdfSignatureAppearance.WINCER_SIGNED and it will work directly.
> 
> Paulo 
> 
> > -----Original Message-----
> > From: [EMAIL PROTECTED] 
> > [mailto:[EMAIL PROTECTED] On 
> > Behalf Of Jens Kelkel
> > Sent: Friday, February 23, 2007 10:14 AM
> > To: Post all your questions about iText here
> > Subject: Re: [iText-questions] sign a PDF
> > 
> > Hallo,
> > 
> > Thanks for the answer. I have found the solution. The 
> > keystore wasn't properly build. 
> > But next problem is that I get a message form Acrobat Reader 
> > (Version 8 German) that he couldn't find the handler to 
> > verify the Signature.
> > 
> > Now anybody, how I add a handler to the document?
> > 
> > Here my code that I use:
> > 
> > 
> > KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
> > URL url= 
> > this.getClass().getClassLoader().getResource("anotherstore.jks");
> > ks.load(new FileInputStream(url.getPath()), 
> > "jk(JK)%jk".toCharArray());
> > String alias = (String)ks.aliases().nextElement();
> > PrivateKey key = (PrivateKey)ks.getKey(alias, 
> > "jk(JK)%jk".toCharArray());
> >                                             
> > Certificate[] chain = ks.getCertificateChain(alias);
> > PdfReader reader2 = new PdfReader(out.toByteArray());
> > ByteArrayOutputStream fout = new ByteArrayOutputStream();
> > PdfStamper stp = PdfStamper.createSignature(reader2, fout, '\0');
> > PdfSignatureAppearance sap = stp.getSignatureAppearance();
> > sap.setCrypto(key, chain, null, 
> > PdfSignatureAppearance.VERISIGN_SIGNED);
> > sap.setReason("Unterschrift Angebot");
> > sap.setLocation("Saarbrücken");
> > //             comment next line to have an invisible signature
> > sap.setVisibleSignature(new Rectangle(100, 100, 200, 200), 1, null);
> > sap.setCertified(true);
> > stp.close();
> > 
> > Thanks
> > 
> > Jens Kelkel
> > 
> > -------- Original-Nachricht --------
> > Datum: Thu, 22 Feb 2007 15:32:06 -0000
> > Von: "Paulo Soares" <[EMAIL PROTECTED]>
> > An: "Post all your questions about iText here" 
> > <[email protected]>
> > CC: 
> > Betreff: Re: [iText-questions] sign a PDF
> > 
> > > sap.setCrypto(key, chain, null, 
> > PdfSignatureAppearance.VERISIGN_SIGNED);
> > > 
> > > Maybe key or chain are null.
> > > 
> > > Paulo 
> > > 
> > > > -----Original Message-----
> > > > From: [EMAIL PROTECTED] 
> > > > [mailto:[EMAIL PROTECTED] On 
> > > > Behalf Of Jens Kelkel
> > > > Sent: Thursday, February 22, 2007 2:16 PM
> > > > To: [email protected]
> > > > Subject: [iText-questions] sign a PDF
> > > > 
> > > > Hello,
> > > > 
> > > > I want to sign a PDF with the following code:
> > > > 
> > > > KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
> > > > System.out.println(ks.getProvider());
> > > > ks.load(new 
> > > > FileInputStream("C:\\j2sdk1.4.2_05\\bin\\keystore3.ks"), 
> > > > pass.toCharArray());
> > > > 
> > > > String alias = (String)ks.aliases().nextElement();
> > > > PrivateKey key = (PrivateKey)ks.getKey(alias, pass.toCharArray());
> > > >                 
> > > > Certificate[] chain = ks.getCertificateChain(alias);
> > > > PdfReader reader = new PdfReader("c:\\Antrag.pdf");
> > > > FileOutputStream fout = new FileOutputStream("c:\\signed.pdf");
> > > > PdfStamper stp = PdfStamper.createSignature(reader, fout, '\0');
> > > > PdfSignatureAppearance sap = stp.getSignatureAppearance();
> > > > sap.setCrypto(key, chain, null, 
> > > > PdfSignatureAppearance.VERISIGN_SIGNED);
> > > > sap.setReason("I'm the author");
> > > > sap.setLocation("Saarbrücken");
> > > > sap.setVisibleSignature(new Rectangle(100, 100, 200, 
> > 200), 1, null);
> > > > sap.setCertified(true);
> > > > stp.close();
> > > > 
> > > > If I use a self signed Certificate the code run with no 
> > > > problem. But if I import my Versign Certificate in the 
> > > > keystore I get the follow Message. 
> > > > 
> > > > java.lang.NullPointerException
> > > >         at 
> > > > com.lowagie.text.pdf.PdfSignatureAppearance.getAppearance(PdfS
> > > > ignatureAppearance.java:395)
> > > >         at 
> > > > com.lowagie.text.pdf.PdfSignatureAppearance.preClose(PdfSignat
> > > > ureAppearance.java:902)
> > > >         at 
> > > > com.lowagie.text.pdf.PdfSignatureAppearance.preClose(PdfSignat
> > > > ureAppearance.java:847)
> > > >         at com.lowagie.text.pdf.PdfStamper.close(PdfStamper.java:175)
> > > >         at de.jens.kelkel.PDFSignature.main(PDFSignature.java:89)
> > > > Exception in thread "main"
> > > > 
> > > > Have anybody a solution fort hat problem??
> > > > 
> > > > -- 
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> e
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> destinatário de usar, revelar ou distribuir qualquer parte desta
> mensagem. 
> 
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> If this
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