Big Update to 8.4.28: limited experimental APS support

Some curious guys may have already seen it. There are APS and an AES functions in the text which you don’t need for FileOpen.

Tetrachroma and Neisklar are proud to present the world’s first release:

Ineptpdf 8.4.28 has limited (experimental) Adobe Policy Server Support.

Actually, at the moment it only works for German Libraries but with the right ‘PrincipalKey’ (which you can get by sniffing communication between your computer and the server) it should work for a bigger set of files. As it’s experimental no support for that part but for a fraction of users might fi nd itvery interesting.

At that moment I want to say thanks to Neisklar who helped to find the key elements in APS. Thanks for the productive teamwork.

Despite APS support there are numerous small bug fixes.



15 Responses to “Big Update to 8.4.28: limited experimental APS support”

  1. 1 ukraine
    August 5, 2010 at 8:13 am

    doesn’t work for d@wsonera
    Error:cannot find principal key for this pdf

    • August 5, 2010 at 8:35 am

      Yes that’s an expected behavior for a non existing Principal Key. If you want to get the principal key you have to setup an Apache (and php) and ‘fish’ the key out of the logs:

      The method is described in


      A medium experienced user will need around an hour to set it up (uncomment the debug print outs).

      If you have the Principal key you can decrypt all the e-books from that publisher.

      A fully automated script update is loosely planed but it’s a complete soap xml request-reply scheme – that could take a while to develop (and I have other priorities right now).

      I will include PrincipalKeys which will (hopefully) be sent to me in the next releases.

      • 3 ukraine
        August 5, 2010 at 10:42 am

        thank you very much for detailed reply!

      • 4 Marek
        August 26, 2011 at 4:13 am

        How the hell do you sniff anything with Apache? I thought this is a web server…

  2. 5 Stu
    October 10, 2010 at 3:54 pm

    ukraine/tetrachroma – did you manage to get the principalkey for dawsonera? if not I may try using the method above

    • October 11, 2010 at 6:33 am

      If you want to get the Principal Key you have to install Apache2/PHP and log the communication. In fact it’s not hard to do (costs just a little bit of time).

      The script includes the Principal Key for the German Onleihe (German E-Book Lending System). As you have to have access to the server (via workable pdf) you can get the Principal Key.

      I can include new principal keys if you send them to me.

      • 7 Cassandra
        October 11, 2010 at 10:18 am

        Stu, please do. Could really do with that.

    • 8 ukraine
      December 15, 2010 at 9:17 am

      not managed. could you please post it?

      • December 15, 2010 at 1:22 pm

        Experimental APS support is included since 8.4.28. Check out the FAQs and links for background information.

        Greetings Tetrachroma

        • 10 ukraine
          December 15, 2010 at 11:39 pm

          thank tetrachroma, already checked with no success.

          • December 16, 2010 at 10:21 am

            You have to fish out the PrincipalKey which needs some patience and time.

            Greetings Tetrachroma

          • 12 Dawson
            March 14, 2012 at 6:36 pm

            Has anyone managed to obtain the dawsonera Principal Key?

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