digital signature - How to digitally sign PDF files with XFA forms using iText -

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itext release notes mention signing of pdfs xfa forms supported itext versions 5.4.2 , 5.4.3:

http://itextpdf.com/history/?branch=54&node=542

http://itextpdf.com/history/?branch=54&node=543

is there documentation somewhere how signing in java?

i interested in signing pdfs xfa there prepared field signature.

this small example showing how sign using xmldsig:

pdfreader reader =new  pdfreader(src); fileoutputstream os =new  fileoutputstream(dest); pdfstamper stamper = pdfstamper.createxmlsignature(reader, os); xmlsignatureappearance appearance = stamper.getxmlsignatureappearance(); appearance.setxmllocator(new  xfaxmllocator(stamper)); appearance.setxpathconstructor(new xfaxpathconstructor(xfaxpathconstructor.xdppackage.datasets)); externalsignature signature =new  privatekeysignature(pk, digestalgorithm,"bc"); //use signxmldsig or signxades makexmlsignature.signxmldsig(appearance, signature, chain);

you can sign using xades, won't able validate signature in adobe software because don't think adobe supports xades (please correct me if i'm wrong).


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