RE: [dvd-discuss] Microsoft Reader encryption broken too

[Michael.A.Rolenz(at)aero.org]

Or if those critical section are damaged by the player through bad design. 
This is not a hypothetcal. I had a TEAC CD changer that nearly ruined a 
CD. Actually it has ruined it. It would spin it CDs, not find the laser 
synch and then drop the still  spinning CD onto the changer table 
(Obviously it was spinning nothing right.) One CD got a nasty circular 
scratch on it after one attempt at using the player. When it did play the 
CD the changer hit that scratch and stopped-track servo lock lost I would 
guess. The replacement CD changer does play it although I can hear some 
problems at the right time (some clicks.).  Also, don't forget The click 
of death for ZIP drives.  But then the MPAA and DVDCCA  as well as the 
rest of the cartel don't want to see a univeral DVD player that not only 
works in any region but plays ANY DVD.




"Harold Eaton" <haceaton@hotmail.com>
Sent by: owner-dvd-discuss@eon.law.harvard.edu
09/04/01 03:12 PM
Please respond to dvd-discuss

 
        To:     dvd-discuss@eon.law.harvard.edu
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        Subject:        RE: [dvd-discuss] Microsoft Reader encryption broken too


Richard Hartman wrote:

>I don't think you've read that correctly.  If the TPM
>fails to permit access because of damage.  Well, if you've
>not damaged the DVD sufficiently, access will still be
>granted.  If you _have_ damaged it sufficiently, the TPM
>doesn't matter a damn because the bits are gone and you
>can't read the source material anyway.

Umm, no.  You could damage only the title keys (or even
a specific title key) on the DVD disc, and then CSS will
no longer provide access, but Franks direct attack will
provide access...


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