On Thu, Aug 6, 2015 at 3:14 PM, Carlos E. R.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
On 2015-08-06 22:16, Chris Murphy wrote:
On Thu, Aug 6, 2015 at 12:39 PM, Carlos E. R. <> wrote:
How would you create such a signature in Linux? :-?
I've been too lazy to try to figure it out.
I've used self-signed certificates generated in Acrobat to do this.
Well, yes, acrobat does it, but there is no more acrobat in Linux.
I have to look at LibreOffice options. It can encode, which I use. Dunno about sign.
Evince always comes up in such searches. And also just stumbled on this but only gave it a quick glance. https://paulbradley.org/digitally-sign-pdf-files/ I think this is definitely an area that needs to be better on all platforms. But PDF is sufficiently complicated that I think some of the work has been about narrowing the scope of what's included, and that's on-going work. Like, you can embed movies in PDF. But does it make sense to print a movie? No. So the PDF/X (various) formats all exclude movies, and exclude music files, and restrict features to more reliable ones that aren't brand new, and so on. The same applies to PDF/A for archiving. But for secure document exchange, is this well standardized? I don't know, and I think that's a pre-requisite I'd think any development effort outside of Adobe would want to see. Their able to get away with a pre-mature implementation when they have 90% of platforms covered with a mix of free and not free software, as that helps drive pay for software sales. -- Chris Murphy -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org