Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261425AbVDNK6S (ORCPT ); Thu, 14 Apr 2005 06:58:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261432AbVDNK6S (ORCPT ); Thu, 14 Apr 2005 06:58:18 -0400 Received: from mail-in-05.arcor-online.net ([151.189.21.45]:56215 "EHLO mail-in-05.arcor-online.net") by vger.kernel.org with ESMTP id S261425AbVDNK6R (ORCPT ); Thu, 14 Apr 2005 06:58:17 -0400 From: "Bodo Eggert " <7eggert@gmx.de> Subject: Re: encrypted swap (was Re: [PATCH encrypted swsusp 1/3] core functionality) To: Andy Isaacson , Herbert Xu , Pavel Machek , Andreas Steinmetz , rjw@sisk.pl, linux-kernel@vger.kernel.org Reply-To: 7eggert@gmx.de Date: Thu, 14 Apr 2005 12:57:50 +0200 References: <3SZMt-3zo-15@gated-at.bofh.it> <3T83r-1Mk-35@gated-at.bofh.it> User-Agent: KNode/0.7.2 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8Bit Message-Id: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 963 Lines: 14 Andy Isaacson wrote: > * the key is automatically regenerated every 2 hours (or whatever); as > pages encrypted under the old key age out, it can be freed eventually Changing the key would not help, since if you can get the swap pages on a running system, you can also get the keys, and if you are using a limited set of keys (you obviously want that), using more than one key will just add a small linear factor to cracking the whole swap data of an offline system. -- Field experience is something you don't get until just after you need it. Fri?, Spammer: info@fibelckn.info webmaster@tlcks.com borrowed@jebafdef.info graspable9755@incbggc.info zm-e@bnik.com several@sanction6029biz.us - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/