[gentoo-user] Re: Copying encrypted files from a DVD

[Nikos Chantziaras]

Joerg Schilling wrote:
> Nikos Chantziaras <realnc@×××××.de> wrote:
>
>> Grant wrote:
>>> I'd like to back up the files on my DVD-Audio discs.  The files are
>>> encrypted and I don't want to decrypt them, I just want to back them
>>> up.  I'm getting I/O errors when I try to cp the files, and I'm
>>> guessing it's because of the encryption.  Does anyone know of a method
>>> that would back these discs up in their encrypted form?
>> That doesn't work that way.  What you get is actually garbage and is not
>> "encrypted" (otherwise you would be able to copy it to another DVD).
>> Creating a copy of an audio DVD which is itself encrypted would defeat
>> the purpose of a copy protection, since even though encrypted, it's
>> still a copy, and the protection wants to prevent that.  If you can copy
>> it, it wouldn't be protected :P
>
> There is no copy protection on a DVD. There is however a region specific
> _usage_ "protection".

DVD-Audio works different, utilizing other forms of protection unrelated 
to video DVDs.  See http://en.wikipedia.org/wiki/DVD-Audio