Document both signed and with pdf/A standard?

How to put a signature in a pdf/A document without losing the pdf/A properties (ISO)?

I produced a pdf/A file in pdf24, saved it and closed the program. Then, i signed it in the same program and the result was a normal pdf file signed without the pdf/A ISO requirements. I Can´t figure it out why can´t have a file both PDF/A & signed. Thank you! Pedro P. arq@ofiarte.pt

Answers to question on topic: Document both signed and with pdf/A standard?

Re:

06.01.2012, 12:29:42

Oh yes, that's a nice thing but I think this is currently not possible.

Hm maybe it would be better if PDF/X and PDF/A options are part of the PDF output filter and not in it's own one.

I'll think that over.

Of course you can...

10.01.2012, 20:06:50

The PDF standard FULLY SUPPORTS digital signatures and in fact many tools (such as Adobe Acrobat/Reader) enable the ability to properly sign your PDF/A documents while remaining compliant with the standard.

Leonard Rosenthol
Project Leader, ISO 19005 (PDF/A)

Re:

12.01.2012, 10:11:29

I've set this point on TODO list.