sentences:  This is an example of the analog hole.Both title keys and one of the keys used to decrypt them (known as "Processing Keys" in the AACS specifications) have been found by using debuggers to inspect the memory space of running HD-DVD and Blu-ray player programs.Hackers also found Device Keys,
  which are used to calculate the Processing Key, and a Host Private Key
  (a key signed by the AACS LA used for hand-shaking between host and HD drive; required for reading the Volume ID).