Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752644Ab2JaRBp (ORCPT ); Wed, 31 Oct 2012 13:01:45 -0400 Received: from caibbdcaaaaf.dreamhost.com ([208.113.200.5]:42637 "EHLO homiemail-a47.g.dreamhost.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750992Ab2JaRBn (ORCPT ); Wed, 31 Oct 2012 13:01:43 -0400 Message-ID: <50915975.8030503@shealevy.com> Date: Wed, 31 Oct 2012 13:01:41 -0400 From: Shea Levy User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20121020 Thunderbird/15.0.1 MIME-Version: 1.0 To: Alan Cox CC: Jiri Kosina , Josh Boyer , Matthew Garrett , linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, linux-efi@vger.kernel.org Subject: Re: [RFC] Second attempt at kernel secure boot support References: <1348152065-31353-1-git-send-email-mjg@redhat.com> <20121029174131.GC7580@srcf.ucam.org> <20121031155503.1aaf4c93@pyramind.ukuu.org.uk> <20121031170334.59833fb1@pyramind.ukuu.org.uk> In-Reply-To: <20121031170334.59833fb1@pyramind.ukuu.org.uk> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1083 Lines: 27 On 10/31/2012 01:03 PM, Alan Cox wrote: > On Wed, 31 Oct 2012 16:55:04 +0100 (CET) > Jiri Kosina wrote: > >> On Wed, 31 Oct 2012, Alan Cox wrote: >> >>> All this depends on your threat model. If I have physical access to >>> suspend/resume your machine then you already lost. If I don't have >>> physical access then I can't boot my unsigned OS to patch your S4 image >>> so it doesn't matter. >> Prepare (as a root) a hand-crafted image, reboot, let the kernel resume >> from that artificial image. > It's not signed. It won't reboot from that image. So then to hibernate the kernel must have a signing key? > Alan > -- > To unsubscribe from this list: send the line "unsubscribe linux-efi" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- 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/