Also remove the sigflags in acroform. You can remove all in the reader and
just use the stamper to output the result.
Paulo
----- Original Message -----
From: "Starke, Rico" <rico.sta...@gl-group.com>
To: "Post all your questions about iText here"
<itext-questions@lists.sourceforge.net>
Sent: Friday, January 23, 2009 5:50 PM
Subject: Re: [iText-questions] Removing a signature
thoroughly(acroFields.removeField not sufficient?)
Hi,
using stamper.getAcroFields() still isn't enough to completely remove the
signature. I still cannot apply password encryption to the resulting pdf
file in acrobat pro v8 ("the security policy cannot be changed because the
document is signed or certified").
Any other ideas?
Kind regards,
Rico
_________________________________________________________
Rico Starke / Capgemini sd&m / Hamburg
Tel: +49 40 254491-451 / www.de.capgemini-sdm.com
Fax: +49 40 254491-11 / mailto:rico.sta...@capgemini-sdm.com
Capgemini sd&m AG, Lübecker Straße 128, 22087 Hamburg
Zusammen. Für nachhaltigen Erfolg.
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-----Ursprüngliche Nachricht-----
Von: 1T3XT info [mailto:i...@1t3xt.info]
Gesendet: Donnerstag, 22. Januar 2009 22:22
An: Post all your questions about iText here
Betreff: Re: [iText-questions] Removing a signature thoroughly
(acroFields.removeField not sufficient?)
Starke, Rico wrote:
> Hi,
>
> thanks for your quick reply! Can you provide more information on how
> to do a full save with iText after removing the signature field? What
> I do right now is:
>
> InputStream signedFileStream = // FileInputStream for a temporary
> java.io.File OutputStream resultFileStream = // FileOutputStream for a
> different temporary File PdfReader reader = new
> PdfReader(signedFileStream); AcroFields acroFields =
> reader.getAcroFields();
> acroFields.removeField("my_signature_name");
> PdfStamper stamper = new PdfStamper(reader, resultFileStream);
> stamper.close();
> reader.close();
For starters, your getting your AcroFields object from the reader. You
should get it from the stamper:
AcroFields acroFields = stamper.getAcroFields();
But I don't know if this will be sufficient to remove the signature.
--
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