From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from v6.tansi.org (ns.km31936-01.keymachine.de [87.118.116.4]) by mail.server123.net (Postfix) with ESMTP for ; Thu, 29 May 2014 22:13:37 +0200 (CEST) Received: from gatewagner.dyndns.org (77-57-44-24.dclient.hispeed.ch [77.57.44.24]) by v6.tansi.org (Postfix) with ESMTPA id 8BC4434FA001 for ; Thu, 29 May 2014 22:13:36 +0200 (CEST) Date: Thu, 29 May 2014 22:13:35 +0200 From: Arno Wagner Message-ID: <20140529201335.GA9014@tansi.org> References: <1401370403.94216.YahooMailNeo@web172002.mail.ir2.yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1401370403.94216.YahooMailNeo@web172002.mail.ir2.yahoo.com> Subject: Re: [dm-crypt] Is erasing hard disk drive mandatory? List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: dm-crypt@saout.de First, I presume this is about wiping the raw volume with cryptographically striong randomness, or wriping the new encrypted volume with anything (e.g. zeros). These two come down to the same effect on the raw volume. Erasing is not recommended to remove any data that was there before (if you want that, you must erase, but it is a separate thing). Erasing is recommended to make it non-transparent where data was written in the encrypted volume. If you care, then you need to erase. Arno On Thu, May 29, 2014 at 15:33:23 CEST, Kenny Lake wrote: > If I want to create an encrypted volume, over a disk drive where there > were no sensible data or there was another encrypted volume, can i skip > the erasing procedure or will compromise the security of the new encrypted > volume? > _______________________________________________ > dm-crypt mailing list > dm-crypt@saout.de > http://www.saout.de/mailman/listinfo/dm-crypt -- 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 ---- A good decision is based on knowledge and not on numbers. - Plato