2 Replies Latest reply: Jun 18, 2014 9:42 AM by lrosenth

XFA Form signature

Clément K. Jun 18, 2014 8:24 AM

Hi,

My company developed a tool to sign PDF and it's working well. Today, we were submitted a XFA Form PDF, and we cannot see the signature field nor is the signature bar available.

We'd like to know why is Adobe Reader ignoring the signature?

Is it possible to sign a XFA Form with regular PAdES (and not PAdES part five)? If so, will Adobe Reader validate such signature?

1. Re: XFA Form signature

Test Screen Name Jun 18, 2014 8:39 AM (in response to Clément K.)

XFA forms are not really PDF at all, just a thin PDF wrapper round an XML form. Almost no tools work on them, and most tools should automatically disable themselves if XFA is detected to avoid damage, disappointment or at least confusion. I've never looked into it but I imagine signatures must be done in an entirely different XML-centric way.
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2. Re: XFA Form signature

lrosenth Jun 18, 2014 9:42 AM (in response to Clément K.)

You need to be looking at PAdES Part 6, which covers signing an XFA-based PDF.
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