password protection for generated pdf

[zabinetta]

Hi,
so many thanks for sharing this extension. If you might think about an improvement: it would be great if the generated pdfs could optionally be password protected; password could be one of the fields, like the zip code or email-address or something.
with the very best regards,
Sabine

[Starkmann]

At the moment we have no need for such a feature, and I'm not sure how complicated this might me since I am not an pdf expert.