From owner-freebsd-hackers Tue Feb 22 0:22:55 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from freebsd.dk (freebsd.dk [212.242.42.178]) by hub.freebsd.org (Postfix) with ESMTP id EAB4037B616 for ; Tue, 22 Feb 2000 00:22:51 -0800 (PST) (envelope-from sos@freebsd.dk) Received: (from sos@localhost) by freebsd.dk (8.9.3/8.9.1) id JAA00287; Tue, 22 Feb 2000 09:21:20 +0100 (CET) (envelope-from sos) From: Soren Schmidt Message-Id: <200002220821.JAA00287@freebsd.dk> Subject: Re: DeCSS In-Reply-To: <38B20317.8C63436C@bellatlantic.net> from Sergey Babkin at "Feb 21, 2000 10:31:35 pm" To: babkin@bellatlantic.net (Sergey Babkin) Date: Tue, 22 Feb 2000 09:21:20 +0100 (CET) Cc: hackers@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL54 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG It seems Sergey Babkin wrote: > > I can't help keeping wondering if this MAA > is missing the point completely: why would > someone need the decryption to make a _copy_ ? > A copy is a copy and it appears to me that > the encrypted bits written on the disk surface > could be copied just exactly as well as the > decrypted bits. Probably the real reason they > start this activity is because otherwise they > would lose some kind of royalties from the > DVD-players manufacturers. Well, since this is another issue, I'll answer :) You cannot _read_ a DVD without having exchanged the CSS keys with the drive, it will return "not authenticated" when you try to read the protected sectors (ie not all sectors on a DVD are protected, there might be programs, pictures and stuff thats not). So you would need special HW to read the original, before you can copy. And yes I think the DVD guys are the bad ones, and they try to hide the real agenda, but the DVD hackers are not much better I'm sorry to say. -Søren To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message