The current limitations with certifying is that it will only work with
Acrobat 7 and higher and that no further changes are allowed in the
document.
Paulo
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On
> Behalf Of Wahaj Khan
> Sent: Friday, November 17, 2006 9:57 AM
> To: [email protected]
> Subject: [iText-questions] signed and certified not working
>
> Hi All,
>
> I am trying to certify a PDF which has an empty signature
> field and a text
> field, using the code below, allowing only signing to be done
> later in the
> existing empty signature field but when I opened the
> certified document in
> Acrobat 7, it does not allow me to sign any empty signature field.
>
> Here is the code I am trying:
>
> System.out.println("Signing and Certifying...");
> PdfReader reader = new PdfReader(m_strInputPDFDocument);
> FileOutputStream fout = new
> FileOutputStream(a_strOutputPDFDocument);
>
> // creating the appearance
> PdfStamper stp = PdfStamper.createSignature(reader, fout,
> '\0', null,
> false);
> PdfSignatureAppearance sap = stp.getSignatureAppearance();
> sap.setCrypto(key, chain, null,
> PdfSignatureAppearance.WINCER_SIGNED);
> sap.setReason("I'm the author");
> sap.setLocation("Lisbon");
> sap.setCertified(true);
> stp.setEncryption(true, "","testing", 256);//encrypt with
> no open PDF
> permissions
>
> When I am only encrypting the PDF, 256 parameter does work
> correctly works
> and I can sign the PDF later on.
> I am using iText 1.4.6 with JRE 1.5.
>
> Am I doing some thing wrong here.
>
> Best Regards,
> Wahaj
>
>
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