[XeTeX] How can I encrypt (limit permissions) in my PDF?

[Ron Aaron]

Hi, Peter -

> This is an inflexible "security" option. Xdvipdfmx is obviously meant
> to be an interactive programme... Something like a "--batch" option is
> needed.

Yes, I agree.

>
> You can circumvent this! First create the XDV file (xetex --no-pdf),
> then run xdvipdfmx -S <file.xdv>.

OK, so this is a known bug?

> Xdvipdfmx is based on dvipdfm. See its documentation (texdoc dvipdfm)
> and check which of dvipdfm's specials work with xdvipdfmx.

OK, thanks.  I think most of its specials will work, but none of them
seem to be what I need :o