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From: Kent Yoder <shpedoikal@gmail.com>
Date: Tue, 26 Feb 2013 10:45:27 -0600
Message-ID: <CAM0nabEQeezsg_KTX03-qVohXGX=8ZeW7ipFGn-e5_xfoTFXFw@mail.gmail.com>
Subject: Re: [GIT PULL] Load keys from signed PE binaries
To: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Raymond Jennings <shentino@gmail.com>, "Theodore Ts'o" <tytso@mit.edu>,
        Dave Airlie <airlied@gmail.com>, Greg KH <gregkh@linuxfoundation.org>,
        David Howells <dhowells@redhat.com>, Florian Weimer <fw@deneb.enyo.de>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Josh Boyer <jwboyer@redhat.com>, Peter Jones <pjones@redhat.com>,
        Vivek Goyal <vgoyal@redhat.com>, Kees Cook <keescook@chromium.org>,
        keyrings@linux-nfs.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Tue, Feb 26, 2013 at 4:21 AM, Matthew Garrett <mjg59@srcf.ucam.org> wrote:
> On Tue, Feb 26, 2013 at 02:07:22AM -0800, Raymond Jennings wrote:
>> Just curious here, but is this as much of an issue if a user is
>> somehow able to take ownership of his own machine?
>
> No, if you're doing your own key management then it's no problem at
> all.
>
>> I'm assuming this is related to TPM somehow.
>
> No, completely unrelated.

  Almost completely.  As Matthew I'm sure knows, TPM is also used to
establish a chain of trust, but not using signed
firmware/kernel/modules, but chained hashes that are later signed
using the TPM.  It does avoid the issue of embedding keys from a
centralized authority in your box's firmware.

Kent

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> Matthew Garrett | mjg59@srcf.ucam.org
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