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Subject[clueless] cryptography in DVD? Re: DVD-ROM problems
Hi!

> > #mount /dvd
> > #tstdvd /dev/cdrom
>
> (usually you tstdvd prior to mounting, but it's usually not a problem).
>
> > not Authenticated
> > Request AGID [1]... AGID 0
> > Host Sending Challenge: 09 08 07 06 05 04 03 02 01 00
> > LU sent key1: FD 14 D4 74 2A
> > Drive Authentic - using varient 0
> > LU sent challenge: 23 22 8E F5 86 EE BB 8B CB 3F
> > Host sending key 2: 8D 8D 6B C7 9B
> > DVD is authenticated
> > Received Session Key: B6 3D 2A 82 94
> > not Authenticated
> > Received Disc Key: 7A 7D 51 2E ED 2F 06 89 A6 6C
> > Authenticated
...
> Ok, so it authenticates fine at least. I'd like to see the errors that
> get dumped to the logs at this point (dmesg), this might not be a
> plain I/O error.

Just out of curiosity, what is that? You need cryptography for your
DVD to work? What is it good for? Why does linux need to know if drive
knows some secret numbers?
Pavel
--
I'm pavel@ucw.cz. "In my country we have almost anarchy and I don't care."
Panos Katsaloulis describing me w.r.t. patents me at discuss@linmodems.org

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