Fill in Form and then sign

["Paulo Soares" <psoares (at) consiste.pt>]

Call SetEncryption() right after creating the PdfStamper. 

Paulo

> -----Original Message-----
> From: itext-questions-bounces@lists.sourceforge.net 
> [mailto:itext-questions-bounces@lists.sourceforge.net] On 
> Behalf Of Eliasen Jan
> Sent: Wednesday, June 14, 2006 1:01 PM
> To: Post all your questions about iText here
> Subject: [iText-questions] Fill in Form and then sign
> 
> Hi
>  
> I am trying to open up a PDF document, fill in some values 
> into some form fields and then sign the document at the end.
>  
> Unfortunately, I can not get it to work.
>  
> My code looks like this:
>  
> string alias = null;
> 
> string keyPath = 
> @"D:\Work\Projekter\DubliNet\Sikkerhed\Certifikatet\PrivateKey
> WithCert.p12";
> 
> PKCS12Store pk12 = new PKCS12Store(new FileStream(keyPath, 
> FileMode.Open, FileAccess.Read), "TooHot4u".ToCharArray());
> 
> IEnumerator i = pk12.aliases();
> 
> while (i.MoveNext()) 
> 
> {
> 
> alias = ((string)i.Current);
> 
> if (pk12.isKeyEntry(alias))
> 
> break;
> 
> }
> 
> AsymmetricKeyParameter akp = pk12.getKey(alias).getKey();
> 
> X509CertificateEntry[] ce = pk12.getCertificateChain(alias);
> 
> X509Certificate[] chain = new X509Certificate[ce.Length];
> 
> for (int k = 0; k < ce.Length; ++k)
> 
> chain[k] = ce[k].getCertificate();
> 
> PdfReader reader = new PdfReader(new 
> FileStream(@"D:\Work\Projekter\DubliNet\Blanketter\20050104 
> TakeBack filled out.pdf", FileMode.Open, FileAccess.Read));
> 
> string filename = 
> @"D:\Work\Projekter\DubliNet\Blanketter\20050104 TakeBack 
> filled out SIGNED.pdf";
> 
> System.IO.MemoryStream memStamp = new MemoryStream();
> 
> PdfStamper st = PdfStamper.CreateSignature(reader, new 
> FileStream(filename, FileMode.Create, FileAccess.Write), '\0');
> 
> AcroFields form = st.AcroFields; 
> 
> form.SetField("b_dd","15");
> 
> int perm = PdfWriter.AllowPrinting;
> 
> st.SetEncryption(true, null, "lhkjshdfkjhsadfasdkljncaef", perm);
> 
> PdfSignatureAppearance sap = st.SignatureAppearance;
> 
> sap.SetCrypto(akp, chain, null, PdfSignatureAppearance.WINCER_SIGNED);
> 
> sap.Reason = "I am approving this document";
> 
> sap.Location = "Danish immigration Service";
> 
> sap.SetVisibleSignature("signature");
> 
> st.Close();
> 
>  
> The exception occurs at the line where I create the 
> PdfSignatureAppearance - and the exception is this:
> -- BEGIN
> An unhandled exception of type 
> 'iTextSharp.text.DocumentException' occurred in itextsharp.dll
>  
> Additional information: Content was already written to the output
> -- END
>  
> Thanks in advance!
> 
> Med venlig hilsen
> ________________________________________
> Jan Eliasen
> 
> WM-data
> Fredrik Bajers Vej 1
> 9220  Aalborg Ãst
> Tel.: +45 9630 5800, direkte: +45 9630 5818
> Mobil: +45 2518 8024, fax: +45 9630 5805
> mailto: jaela@wmdata.com
> http://www.wmdata.dk
> 
>  
> 


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