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I'm trying to digitally sign PDFs server-side. So far I found that I can do this using MyPDFSigner, but it's far from my needs. Also I don't believe that this is the only option here.

How to sign pdfs in linux? Does Adobe provide any tool for server-side-signinig PDF documents (it does, see edit)?

It would be nice if it has python api, but command line tool will do too.

I found that its possible using Adobe LiveCycle Digital Signatures ES2 which is java appliaction, but it comes with Adobe LiveCycle which is quite expensive.

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up vote 2 down vote accepted

There's a portable java app that works from the CLI here. I haven't tried it, reversing Java is simple enough. If you really needed a python version it should be possible to clone however it does it.

Credit to @seler on looking up the project page...It is open source. Here's the link

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Nice. It shouldn't be difficult to rewrite it to python (if anyone needs it). And here is project page – seler Sep 19 '11 at 14:44
Bonus on actually looking for the project page. Source available. I just assume closed source a lot of the time ;) – hbdgaf Sep 19 '11 at 14:47
FYI: we are now using PortableSigner in production environment. :) – seler May 11 '12 at 7:32

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