From: "Paulo Soares" <[EMAIL PROTECTED]>
Reply-To: "Paulo Soares" <[EMAIL PROTECTED]>
To: "Juan Sanchez"
<[EMAIL PROTECTED]>,<[email protected]>
Subject: Re: [iText-questions] Add signatures in a existing blank signature
Date: Mon, 8 Aug 2005 16:40:56 +0100
We probably should rewind this thread and start all over again, I'm
confused. What exactly are you trying to do? How would you do that with
Acrobat?
Best Regards,
Paulo Soares
----- Original Message -----
From: "Juan Sanchez" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; <[email protected]>
Sent: Monday, August 08, 2005 11:36 AM
Subject: Re: [iText-questions] Add signatures in a existing blank signature
>
> Hi Paulo.
>
> I read the PDF reference to nderstand the signature dictionary entries.
> I test inserting next code in the sample to define the filter :
>
> ...
> PdfStamper stp = PdfStamper.createSignature(reader,
fout,
> '\0', null, true);
> PdfSignatureAppearance sap = stp.getSignatureAppearance();
>
> // begin new coe added
> PdfDictionary dic = new PdfDictionary();
> dic.put(PdfName.FT, PdfName.SIG);
> dic.put(PdfName.FILTER, new PdfName("Adobe.PPKMS"));
> sap.setCryptoDictionary(dic);
> //end new cod added
>
> ...
> stp.close();
>
>
> But the result is the same.Falis when I call the stp.close() function.
>
> I generate a pdf with one blank signature only with acrobat and I don't
find
> any filter value in the pdf when I edit the file.
>
> I can see, in the samples, that all insert the FT, FILTER and SUBFILTER
> fields first and then insert the CONTENTS. But in a blank signature
don't
> exist Content to put.
>
> Can you help me to find my error or the part of code that is necessary
to
> build a blank signature correctly.
>
> Note : I follow the same steps to built the pdf that in signature.java
> sample that use PdfAcroForm bject. In this sample new document is
created
> and following the code implementation I search when the filter is put
but
i
> have not found it.
>
>
> >From: "Paulo Soares" <[EMAIL PROTECTED]>
> >Reply-To: "Paulo Soares" <[EMAIL PROTECTED]>
> >To: "Juan Sanchez"
> ><[EMAIL PROTECTED]>,<[email protected]>
> >Subject: Re: [iText-questions] Add signatures in a existing blank
signature
> >Date: Fri, 5 Aug 2005 11:25:53 +0100
> >
> >You didn't define the signature filter (PdfName.ADOBE_PPKLITE for
example).
> >You should read the PDF Reference to have a notion on how signatures
work.
> >Start with the examples in howtosign and replace one thing at a time.
> >
> >----- Original Message -----
> >From: "Juan Sanchez" <[EMAIL PROTECTED]>
> >To: <[EMAIL PROTECTED]>; <[email protected]>
> >Sent: Friday, August 05, 2005 8:52 AM
> >Subject: Re: [iText-questions] Add signatures in a existing blank
signature
> >
> >
> > >
> > > Hi Paulo.
> > >
> > > Here the output :
> > >
> > > Before stp.close
> > >
> > > Error
> > >
> > > java.lang.IllegalArgumentException: Unknown filter: null
> > > java.lang.IllegalArgumentException: Unknown filter: null
> > > at
> > >
>
>com.lowagie.text.pdf.PdfSignatureAppearance.preClose(PdfSignatureAppearance
.
> >java:778)
> > > at
> > >
>
>com.lowagie.text.pdf.PdfSignatureAppearance.preClose(PdfSignatureAppearance
.
> >java:717)
> > > at com.lowagie.text.pdf.PdfStamper.close(PdfStamper.java:200)
> > > at
com.lowagie.examples.forms.FormSignature.main(FormSignature.java:125)
> > >
> > >
> > > >From: "Paulo Soares" <[EMAIL PROTECTED]>
> > > >Reply-To: "Paulo Soares" <[EMAIL PROTECTED]>
> > > >To: "Juan Sanchez"
> > > ><[EMAIL PROTECTED]>,<[email protected]>
> > > >Subject: Re: [iText-questions] Add signatures in a existing blank
> >signature
> > > >Date: Thu, 4 Aug 2005 13:27:59 +0100
> > > >
> > > >What's the stack trace?
> > > >
> > > >----- Original Message -----
> > > >From: "Juan Sanchez" <[EMAIL PROTECTED]>
> > > >To: <[EMAIL PROTECTED]>; <[email protected]>
> > > >Sent: Thursday, August 04, 2005 10:07 AM
> > > >Subject: Re: [iText-questions] Add signatures in a existing blank
> >signature
> > > >
> > > >
> > > > >
> > > > > Hi Paulo
> > > > >
> > > > > Another question about blank signatures.
> > > > > I test with the code sample from the question [iText-questions]
> >Adding
> > > >Blank
> > > > > Signature Field gives problem , but the program return me an
error
> >in
> > > >the
> > > > > close function stp.close();
> > > > > As you commented I put the same code used in the
> >AcroForm.AddSignature
> > > >usgn
> > > > > the addAnnotation from PdfStamper.
> > > > >
> > > > > What's the problem ?
> > > > >
> > > > > PdfReader reader = new PdfReader("blank3.pdf");
> > > > > FileOutputStream fout = new FileOutputStream("signed.pdf");
> > > > >
> > > > > int lx = 50 ;
> > > > > int ly = 50 ;
> > > > > int ux = 100 ;
> > > > > int uy = 100 ;
> > > > >
> > > > > PdfStamper stp =
PdfStamper.createSignature(reader,
> >fout,
> > > > > '\0', null, true);
> > > > > PdfSignatureAppearance sap = stp.getSignatureAppearance();
> > > > >
> > > > > PdfWriter writer = stp.getWriter();
> > > > > PdfFormField sig = PdfFormField.createSignature(writer);
> > > > >
> > > > > stp.addAnnotation(sig, 1);
> > > > > sig.setWidget(new Rectangle(lx, ly, ux, uy),
> > > > > PdfAnnotation.HIGHLIGHT_INVERT);
> > > > > sig.setFlags(PdfAnnotation.FLAGS_PRINT);
> > > > > sig.put(PdfName.DA, new PdfString("/Helv 0 Tf 0 g"));
> > > > > sig.setFieldName("SignatureBLANK");
> > > > > sig.setPage();
> > > > > sig.setMKBorderColor(java.awt.Color.black);
> > > > > sig.setMKBackgroundColor(java.awt.Color.white);
> > > > >
> > > > > PdfContentByte cb = writer.getDirectContent();
> > > > > PdfAppearance tp = cb.createAppearance(ux-lx, uy-ly);
> > > > > tp.setGrayFill(1.0f);
> > > > > tp.rectangle(0, 0, ux-lx, uy-ly);
> > > > > tp.fill();
> > > > > tp.setGrayStroke(0);
> > > > > tp.setLineWidth(1);
> > > > > tp.rectangle(0.5f, 0.5f, ux-lx - 0.5f, uy - ly - 0.5f);
> > > > > tp.closePathStroke();
> > > > > tp.saveState();
> > > > > tp.rectangle(1, 1, ux-lx - 2, uy - ly - 2);
> > > > > tp.clip();
> > > > > tp.newPath();
> > > > > tp.restoreState();
> > > > > sig.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, tp);
> > > > >
> > > > > stp.addAnnotation(sig, 1);
> > > > > stp.close();
> > > > >
> > > > > Best regards in advance.
> > > > >
> > > > >
> > > > > >From: "Paulo Soares" <[EMAIL PROTECTED]>
> > > > > >Reply-To: "Paulo Soares" <[EMAIL PROTECTED]>
> > > > > >To: "Juan Sanchez"
> > > > > ><[EMAIL PROTECTED]>,<[email protected]>
> > > > > >Subject: Re: [iText-questions] Add signatures in a existing
blank
> > > >signature
> > > > > >Date: Wed, 3 Aug 2005 16:41:34 +0100
> > > > > >
> > > > > >Signatures must be done one at a time, that's the way PDFs
work.
Do
> >the
> > > > > >next
> > > > > >signatures in append mode (as you did in your code). You can
have
> > > >external
> > > > > >signatures or even a full external PKCS#7, see the examples.
> > > > > >
> > > > > >----- Original Message -----
> > > > > >From: "Juan Sanchez" <[EMAIL PROTECTED]>
> > > > > >To: <[EMAIL PROTECTED]>;
<[email protected]>
> > > > > >Sent: Wednesday, August 03, 2005 3:27 PM
> > > > > >Subject: Re: [iText-questions] Add signatures in a existing
blank
> > > >signature
> > > > > >
> > > > > >
> > > > > > >
> > > > > > > Hi Paulo.
> > > > > > >
> > > > > > > After execute the next code , in the pdf document (that
contain
> >3
> > > >blank
> > > > > > > signatures) only appear 1 signed and the others continue
> >empties.
> > > > > > > What is the problem ? is it necessary to close document
> >everytime
> >?
> > > > > > >
> > > > > > > PdfReader reader = new PdfReader("blank_3.pdf");
> > > > > > > FileOutputStream fout = new
FileOutputStream("signed.pdf");
> > > > > > >
> > > > > > > PRAcroForm form = reader.getAcroForm();
> > > > > > > if (form == null){
> > > > > > > System.out.println("This document has no
fields.");
> > > > > > > return;
> > > > > > > }
> > > > > > >
> > > > > > > // prepare keyStore
> > > > > > > KeyStore ks = KeyStore.getInstance("pkcs12");
> > > > > > > ks.load(new FileInputStream("myCert.p12"),
> > > > > >"mypass".toCharArray());
> > > > > > > String alias = (String)ks.aliases().nextElement();
> > > > > > > PrivateKey key = (PrivateKey)ks.getKey(alias,
> > > > > > > "mypass".toCharArray());
> > > > > > > Certificate[] chain = ks.getCertificateChain(alias);
> > > > > > >
> > > > > > > PdfStamper stp = PdfStamper.createSignature(reader,
> >fout,
> > > >'\0',
> > > > > > > null, true);
> > > > > > > AcroFields af = stp.getAcroFields();
> > > > > > > ArrayList names = af.getBlankSignatureNames();
> > > > > > > for (int k = 0; k < names.size(); ++k) {
> > > > > > > String name = (String)names.get(k);
> > > > > > > System.out.println("Signature name: " + name);
> > > > > > >
> > > > > > > PdfSignatureAppearance sap = stp.getSignatureAppearance();
> > > > > > > sap.setCrypto(key, chain, null,
> > > >PdfSignatureAppearance.WINCER_SIGNED);
> > > > > > > sap.setReason("MyReasons");
> > > > > > > sap.setLocation("MyLocation");
> > > > > > > sap.setVisibleSignature(name);
> > > > > > > }
> > > > > > > stp.close();
> > > > > > > }
> > > > > > > catch(Exception e ){
> > > > > > > System.out.println("\n\t" + e.toString());
> > > > > > > }
> > > > > > > }
> > > > > > >
> > > > > > >
> > > > > > > Regards.
> > > > > > >
> > > > > > >
> > > > > > > >From: "Paulo Soares" <[EMAIL PROTECTED]>
> > > > > > > >Reply-To: "Paulo Soares" <[EMAIL PROTECTED]>
> > > > > > > >To: "Juan Sanchez"
> > > > > > >
><[EMAIL PROTECTED]>,<[email protected]>
> > > > > > > >Subject: Re: [iText-questions] Add signatures in a existing
> >blank
> > > > > >signature
> > > > > > > >Date: Wed, 3 Aug 2005 11:09:01 +0100
> > > > > > > >
> > > > > > > >See http://itextpdf.sf.net/howtosign.html. To sign an
existing
> > > >field
> > > > > >use
> > > > > > > >PdfSignaturaAppearance.setVisibleSignature(String).
> > > > > > > >
> > > > > > > >----- Original Message -----
> > > > > > > >From: "Juan Sanchez" <[EMAIL PROTECTED]>
> > > > > > > >To: <[email protected]>
> > > > > > > >Sent: Wednesday, August 03, 2005 9:38 AM
> > > > > > > >Subject: [iText-questions] Add signatures in a existing
blank
> > > >signature
> > > > > > > >
> > > > > > > >
> > > > > > > > > Hi.
> > > > > > > > >
> > > > > > > > > I want to insert a signature in a blank signature
created
> > > > > >previously.
> > > > > > > > > Is there some example that it can help me ?
> > > > > > > > >
> > > > > > > > > Regards.
> > > > > > > > >
> > > > > > > > >
> > > >_________________________________________________________________
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