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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.

EDIT:
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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  • The closest to this I've found (short of implementing it yourself) is described in this SO question/answer: http://stackoverflow.com/questions/378247/how-to-digitally-sign-pdf-files The accepted solution there is a Java library ([iText](http://itextpdf.com/index.php)) that I'm assuming you could turn into an executable, then in turn, call from python. Far from ideal, but it's offered under the [AGPL](http://itextpdf.com/terms-of-use/agpl.php) (as well as commercial, if this is a problem for you) so it doesn't have to be expensive. – Adam Wagner Oct 23 '11 at 20:49

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