Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 20 Dec 2000 20:22:17 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 20 Dec 2000 20:22:07 -0500 Received: from router-100M.swansea.linux.org.uk ([194.168.151.17]:49163 "EHLO the-village.bc.nu") by vger.kernel.org with ESMTP id ; Wed, 20 Dec 2000 20:21:57 -0500 Subject: Re: CPRM copy protection for ATA drives To: lk@mailandnews.com Date: Thu, 21 Dec 2000 00:54:07 +0000 (GMT) Cc: linux-kernel@vger.kernel.org In-Reply-To: from "lk@mailandnews.com" at Dec 20, 2000 11:23:48 PM X-Mailer: ELM [version 2.5 PL1] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: From: Alan Cox Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > Does anyone have any details on this? I presume that the drive > firmware is capable of identifying copy-protected data during > a write. I also presume that nobody on lkml would condone It seems to be very similar to the DVD stuff, including ideas for play once only blocks and the like. Pay per read hard disk... > such a terrible idea. I imagine that this system is pretty > easy to defeat if you can modify the filesystem. Perhaps even Its probably very hard to defeat. It also in its current form means you can throw disk defragmenting tools out. Dead, gone. Welcome to the United Police State Of America. > The consequences of being able to corrupt other people's backups > by introducing "copy-protected" data are intriguing... I'm just waiting for a few class action law suits against drive manufacturers when people's backup tools cannot cope - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/