title: Is there an open-source DRM solution?
body: <p>Is there some open-sourced, well-documented and used DRM framework/library?</p>
  
  <p>I want to write some framework for buying and selling digital stuff, where I want to implement, somehow, for the seller to have the possibility to lock the files with some sort of DRM, where only authorised computers would be able to open it (something like iTunes FairPlay). </p>
  
  <p>It can, and probably has to, involve contacting my server with some login credentials.</p>
  
  <p>On the other hand, I want the client to be open-sourced, and probably the server too .. is that even possible? Security through obscurity does not work, but DRM is not exactly "security"...</p>
  
  <p>All I was able to find is <a href="http://it.slashdot.org/article.pl?sid=08/01/22/0230217" rel="noreferrer">this discussion on slashdot with the exact same problem</a>, but it ended with "DRM IS BAD", and Sun's DReaM project, but I have no clue how to get to the <a href="http://www.openmediacommons.org/" rel="noreferrer">actual code/usage of the framework on their site</a>.</p>
  
  <p>If you think Open Sourced DRM is not possible, tell me so.</p>