“While many people many consider it trivial, the cracking of
the DVD encryption format is a very major event. The
encryption capabilities were one of the main reasons why DVD drives
and disks took so long to be released. But, as in all things, many
things can be learned from this. One of the major lessons is that
of security.”
“Bad security is easy to implement, with a major example of it
being the DVD encryption. By pairing relatively weak encryption
with a fixed set of decryption keys, it becomes easier to break,
and harder to prevent someone who has already broken one to break
others, and thus makes cycling the decode keys almost
pointless.”