From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.saout.de ([127.0.0.1]) by localhost (mail.saout.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id M3s0LbcHaNjX for ; Wed, 11 Dec 2013 21:21:53 +0100 (CET) Received: from v6.tansi.org (unknown [87.118.116.4]) by mail.saout.de (Postfix) with ESMTP for ; Wed, 11 Dec 2013 21:21:52 +0100 (CET) Received: from gatewagner.dyndns.org (77-57-44-24.dclient.hispeed.ch [77.57.44.24]) by v6.tansi.org (Postfix) with ESMTPA id AB6F420DC239 for ; Wed, 11 Dec 2013 21:21:52 +0100 (CET) Date: Wed, 11 Dec 2013 21:21:51 +0100 From: Arno Wagner Message-ID: <20131211202151.GA15640@tansi.org> References: <52A8B602.4030303@riseup.net> <20131211191607.GA9082@fancy-poultry.org> <20131211191816.GB9082@fancy-poultry.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20131211191816.GB9082@fancy-poultry.org> Subject: Re: [dm-crypt] Possibility for safe Luks partition delete functionality List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: dm-crypt@saout.de On Wed, Dec 11, 2013 at 20:18:16 CET, Heinz Diehl wrote: > On 11.12.2013, Heinz Diehl wrote: > > > You can do that easily by running dd against the first MB's of the > > respective partition.. > > I forgot: you can just switch off the power, which will surely be > much faster than wiping the LUKS header. Ah, no? Unless you have it in a RAM-disk? If you power off, the device is not mapped anymore, but the header is there. Wit things like rubber-hise cryptoanalysis, you can still get at it. If the header is wiped, that becomes impossible. Arno -- Arno Wagner, Dr. sc. techn., Dipl. Inform., Email: arno@wagner.name GnuPG: ID: CB5D9718 FP: 12D6 C03B 1B30 33BB 13CF B774 E35C 5FA1 CB5D 9718 ---- There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies. The first method is far more difficult. --Tony Hoare