[mythtv-users] Mythtv SDV issues

[Raymond Wagner]

On 4/20/2013 3:02 PM, Kris Jensen wrote:
> That pop up all kinds of questions for me. So I Googled  "Tivo is
> licensed with CableLabs" for kicks and the first hit is a good read on
> DRM and such.
> http://w2.eff.org/IP/pnp/cablewp.php
>
> Thought I may help with others understanding DRM. As it did mine.

The basic gist is that in order to protect the content from you, the 
user, both the keys to the content, and the software that handles the 
keys and the unencrypted content, must be outside the control of the 
user.  The software must be distributed as a signed binary, and it must 
only be willing to communicate with other signed or otherwise 
authenticated software, lest you as a user rip out the protection 
mechanisms and recompile.

While nothing prevents an implementation of DRM algorithm to be 
distributed as open source, any functional software must be closed.