[iText-questions] Multiple signatures problem

2007-12-09 Thread Luca Tomat 
Hello,
i'm trying to place multiple signatures on a PDF file (i need 4 signatures).
I tried modifying OpenSignPDF but when i add more than two signatures i
always get that only the first and the last one are valid while all the
signatures among the two show a red X on them.

For instance... lets say that i have 3 signatures, then the first and third
signature are valid, but not the second. Same thing if i have 4 signatures:
the first and fourth signature are valid but not the second and the third.

This is a piece of the code that i am using:
if (.) { //First signature
pdfStamper = PdfStamper.createSignature(pdfReader, bos,
'\0');

} else { //Other signatures
pdfStamper = PdfStamper.createSignature(pdfReader, bos,
'\0', null, true);
}

  [CUT]

if (.) { //First signature
signApp.setReason(Author);
signApp.setCertificationLevel(
PdfSignatureAppearance.CERTIFIED_FORM_FILLING);
signApp.setVisibleSignature(new Rectangle(100, 600, 200, 640),
1, null);
PdfFormField sign2 = PdfFormField.createSignature(
pdfStamper.getWriter());
sign2.setWidget(new Rectangle(200, 600, 300, 640), null);
sign2.setFlags(PdfAnnotation.FLAGS_PRINT);
sign2.setFieldName(sign2);
sign2.setPage(1);
pdfStamper.addAnnotation(sign2, 1);
PdfFormField sign3 = PdfFormField.createSignature(
pdfStamper.getWriter());
sign3.setWidget(new Rectangle(300, 600, 400, 640), null);
sign3.setFlags(PdfAnnotation.FLAGS_PRINT);
sign3.setFieldName(sign3);
sign3.setPage(1);
pdfStamper.addAnnotation(sign3, 1);
PdfFormField sign4 = PdfFormField.createSignature(
pdfStamper.getWriter());
sign4.setWidget(new Rectangle(400, 600, 500, 640), null);
sign4.setFlags(PdfAnnotation.FLAGS_PRINT);
sign4.setFieldName(sign4);
sign4.setPage(1);
pdfStamper.addAnnotation(sign4, 1);
} else { //Other signatures
signApp.setReason(Countersign);
signApp.setCertificationLevel(
PdfSignatureAppearance.NOT_CERTIFIED);
signApp.setVisibleSignature(sign + (round+1)); //round tells
me which field to sign
}

[CUT]





Am i doing something wrong?

Thank you,
  Luca
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Re: [iText-questions] Multiple signatures problem

2007-12-09 Thread Luca Tomat 
Ok, everything works now.
It looks like a problem of OpenSignPDF... this is what they do:
[CUT]
PdfDictionary signDict = new PdfDictionary();
signDict.put(PdfName.FT, PdfName.SIG);
signDict.put(PdfName.FILTER, new PdfName(Adobe.PPKLite));
signDict.put(PdfName.SUBFILTER, new PdfName(adbe.pkcs7.detached));
signDict.put(PdfName.M, new PdfDate(cal));
signDict.put(PdfName.NAME, new
PdfString(PdfPKCS7.getSubjectFields((X509Certificate)
certChain[0]).getField(CN)));

PdfDictionary transParamsDict = new PdfDictionary();
transParamsDict.put(PdfName.P, new PdfNumber(1));
transParamsDict.put(PdfName.V, new PdfName(1.2));
transParamsDict.put(PdfName.TYPE, new PdfName(TransformParams));

PdfDictionary refDict = new PdfDictionary();
refDict.put(new PdfName(TransformMethod), new PdfName(DocMDP));
refDict.put(PdfName.TYPE, new PdfName(SigRef));
refDict.put(new PdfName(TransformParams), transParamsDict);

PdfArray typesArray = new PdfArray();
typesArray.add(refDict);

signDict.put(new PdfName(Reference), typesArray);
signApp.setCryptoDictionary(signDict);
[CUT]

I have changed it into:

PdfDictionary signDict = new PdfDictionary();
signDict.put(PdfName.FT, PdfName.SIG);
signDict.put(PdfName.FILTER, new PdfName(Adobe.PPKLite));
signDict.put(PdfName.SUBFILTER, new PdfName(adbe.pkcs7.detached));
signDict.put(PdfName.M, new PdfDate(cal));
signDict.put(PdfName.NAME, new
PdfString(PdfPKCS7.getSubjectFields((X509Certificate)
certChain[0]).getField(CN)));
signApp.setCryptoDictionary(signDict);

and now it works fine. It looks like they were adding unecessary fields
(maybe because they are using an old version of iText).

Thank you,
  Luca


On Dec 9, 2007 10:42 PM, Luca Tomat [EMAIL PROTECTED] wrote:

 Hello,
 i'm trying to place multiple signatures on a PDF file (i need 4
 signatures).
 I tried modifying OpenSignPDF but when i add more than two signatures i
 always get that only the first and the last one are valid while all the
 signatures among the two show a red X on them.

 For instance... lets say that i have 3 signatures, then the first and
 third signature are valid, but not the second. Same thing if i have 4
 signatures: the first and fourth signature are valid but not the second and
 the third.
-
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[iText-questions] Adding an empty signature-field and signing

2007-12-02 Thread Luca Tomat 
Hello,
I need to add two signature-fields and add a signature inside the first one.

This is how i do it:

..
..
//Lets create the two fields
PdfFormField sign1 = PdfFormField.createSignature(
pdfStamper.getWriter());
sign1.setWidget(new Rectangle(100, 600, 180, 640), null);
sign1.setFlags(PdfAnnotation.FLAGS_PRINT);
sign1.setFieldName(sign1);
sign1.setPage(1);
pdfStamper.addAnnotation(sign1, 1);
PdfFormField sign2 = PdfFormField.createSignature(
pdfStamper.getWriter());
sign2.setWidget(new Rectangle(200, 600, 280, 640), null);
sign2.setFlags(PdfAnnotation.FLAGS_PRINT);
sign2.setFieldName(sign2);
sign2.setPage(1);
pdfStamper.addAnnotation(sign2, 1);
..
..
//Creating the signature for the first field
PdfSignatureAppearanceOSP signApp;
signApp = pdfStamper.getSignatureAppearance();
signApp.setCrypto(null, certChain, null,
PdfSignatureAppearance.WINCER_SIGNED);
signApp.setReason(Author);
signApp.setCertified(2);
signApp.setVisibleSignature(sign1);
..
..

Unfortunately on the last line (signApp.setVisibleSignature(sign1);) i get
the error: The field sign1 does not exist.

Why? What am i doing wrong?

Thank you,
Luca
-
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