From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shea Levy Subject: Re: [RFC] Second attempt at kernel secure boot support Date: Wed, 31 Oct 2012 13:01:41 -0400 Message-ID: <50915975.8030503@shealevy.com> 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> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20121031170334.59833fb1-38n7/U1jhRXW96NNrWNlrekiAK3p4hvP@public.gmane.org> Sender: linux-efi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Alan Cox Cc: Jiri Kosina , Josh Boyer , Matthew Garrett , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-efi@vger.kernel.org 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-u79uwXL29TY76Z2rM5mHXA@public.gmane.org > More majordomo info at http://vger.kernel.org/majordomo-info.html