Vulnerability Development mailing list archives
Re: hacksdmi?
From: David Knaack <dknaack () RDTECH COM>
Date: Mon, 16 Oct 2000 16:10:43 -0500
From: "Granquist, Lamont" <lamont () ICOPYRIGHT COM>
On Fri, 13 Oct 2000, Blue Boar wrote:OK, here's another tangent to the issue: Why do they (RIAA?) want a watermark in the first place? What can you do with it?I think the idea is that they tag the content that you download off of a website with a watermark, then they run it through some kind of encryption/compression algorithm to the SDMI format. The client that you use to download this is the same client that you use for playback. The watermark is tagged with a specific key which will only allow you to play it back on the client that you used to download it.
I can't see this ever working. They are sending data to your computer, and there is no way they can prevent someone from storing and modifying it to remove any access controls. Attempting to watermark the file is pointless, because if they provide a software player for computers, it will quickly be reverse-enginereed to determine how the watermark is detected, which will provide all the information necessary to defeat the watermark. They are fighting the same war that it seems most software makers have already given up on (run away! run away!), and I think they will have about as much success. That is, they will put in a token effort (like a serial number) to 'keep honest people honest', and realize that they cannot stop the dishonest ones. DK
Current thread:
- Re: SDMI - The way I would make the water mark., (continued)
- Message not available
- Re: SDMI - The way I would make the water mark. Ralph Moonen (Oct 14)
- Re: hacksdmi? Bluefish (P.Magnusson) (Oct 11)
- Re: hacksdmi? Bluefish (P.Magnusson) (Oct 11)
- Re: hacksdmi? Steve Mosher (Oct 12)
- Re: hacksdmi? David Knaack (Oct 12)
- Re: hacksdmi? Robert Johnson (Oct 13)
- Re: hacksdmi? Robert A. Seace (Oct 13)
- Re: hacksdmi? Steve Mosher (Oct 12)
- Re: hacksdmi? Granquist, Lamont (Oct 14)
- Re: hacksdmi? Ben Galehouse (Oct 15)
- Re: hacksdmi? David Knaack (Oct 16)
- Re: hacksdmi? Ralph Moonen (Oct 12)
- Re: hacksdmi? Steve Mosher (Oct 12)
- Re: hacksdmi? Bluefish (P.Magnusson) (Oct 19)
- sdmi info Phosgene (Oct 20)
- Re: hacksdmi? Steve Mosher (Oct 20)
- Re: hacksdmi? Joseph Pingenot (Oct 20)