At 10:44 PM -0700 8/28/97, Lucky Green wrote:
At 07:30 AM 8/28/97 DST, Jenaer Mixmaster Anonserver wrote:
DVD encryption is described on the Web at:
http://www.kipinet.com/tdb/tdb_oct96/feat_protection.html
There's a very simple way to 'break' it - you just copy the entire disk. Key-size is irrelevant.
I fail to see how you can prevent copying an entire disk. If the controller can access the data, I can copy it. Unless of course it will be made illegal to sell DVD controllers that output the raw data stream.
Come to think of it, that must be coming.
The way it was done with DAT (Digital Audio Tape), the product similar to DVD in so many ways, was to restrict the availability of DAT recorders which could faithfully record the output of other DAT machines. The SCMS system, or "Serial Copy Management System," has been in all consumer-grade DAT machines. Pro-grade DAT machines have no SCMS, or SCMS-defeat switch. And there are various SCMS defeaters widely available. --Tim May There's something wrong when I'm a felon under an increasing number of laws. Only one response to the key grabbers is warranted: "Death to Tyrants!" ---------:---------:---------:---------:---------:---------:---------:---- Timothy C. May | Crypto Anarchy: encryption, digital money, tcmay@got.net 408-728-0152 | anonymous networks, digital pseudonyms, zero W.A.S.T.E.: Corralitos, CA | knowledge, reputations, information markets, Higher Power: 2^1398269 | black markets, collapse of governments. "National borders aren't even speed bumps on the information superhighway."