From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>,
"libvir-list@redhat.com" <libvir-list@redhat.com>,
"Relph, Richard" <Richard.Relph@amd.com>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"Lendacky, Thomas" <Thomas.Lendacky@amd.com>
Subject: Re: [Qemu-devel] libvirt/QEMU/SEV interaction
Date: Wed, 18 Oct 2017 20:18:48 +0100 [thread overview]
Message-ID: <20171018191847.GF3225@work-vm> (raw)
In-Reply-To: <20171018071906-mutt-send-email-mst@kernel.org>
* Michael S. Tsirkin (mst@redhat.com) wrote:
> On Fri, Sep 08, 2017 at 10:48:10AM -0500, Brijesh Singh wrote:
> > > > > 11. GO verifies the measurement and if measurement matches then it may
> > > > > give a secret blob -- which must be injected into the guest before
> > > > > libvirt starts the VM. If verification failed, GO will request cloud
> > > > > provider to destroy the VM.
>
> I realised I'm missing something here: how does GO limit the
> secret to the specific VM? For example, what prevents hypervisor
> from launching two VMs with the same GO's DH, getting measurement
> from 1st one but injecting the secret into the second one?
Isn't that the 'trusted channel nonce currently associated with the
guest' in the guest context?
Dave
> Thanks,
>
> --
> MST
>
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
next prev parent reply other threads:[~2017-10-18 19:19 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-08 11:57 [Qemu-devel] libvirt/QEMU/SEV interaction Brijesh Singh
2017-09-08 13:15 ` Daniel P. Berrange
2017-09-08 13:45 ` Relph, Richard
2017-09-08 14:52 ` Daniel P. Berrange
2017-09-08 15:48 ` Brijesh Singh
2017-09-08 15:51 ` Daniel P. Berrange
2017-09-08 16:10 ` Brijesh Singh
2017-09-08 16:11 ` Laszlo Ersek
2017-10-18 4:21 ` Michael S. Tsirkin
2017-10-18 19:18 ` Dr. David Alan Gilbert [this message]
2017-10-19 1:35 ` Michael S. Tsirkin
2017-10-20 14:26 ` Richard Relph
2017-09-18 9:43 ` [Qemu-devel] [libvirt] " Erik Skultety
2017-09-18 9:47 ` Daniel P. Berrange
2017-09-18 12:41 ` Richard Relph
2017-09-18 13:51 ` Erik Skultety
2017-09-26 14:36 ` [Qemu-devel] " Michael S. Tsirkin
2017-09-27 11:06 ` Dr. David Alan Gilbert
2017-09-27 13:39 ` Brijesh Singh
2017-09-27 16:12 ` Michael S. Tsirkin
2017-09-27 19:06 ` Richard Relph
2017-09-29 19:34 ` Michael S. Tsirkin
2017-09-29 19:48 ` Richard Relph
2017-09-29 20:07 ` Richard Relph
2017-09-29 21:35 ` Michael S. Tsirkin
2017-10-01 2:54 ` Michael S. Tsirkin
2017-10-01 2:59 ` Michael S. Tsirkin
2017-09-29 21:16 ` Michael S. Tsirkin
2017-09-29 22:15 ` Laszlo Ersek
2017-10-02 9:15 ` Daniel P. Berrange
2017-10-02 9:11 ` Daniel P. Berrange
2017-09-29 21:58 ` Laszlo Ersek
2017-10-01 0:09 ` Brijesh Singh
2017-10-01 9:17 ` Laszlo Ersek
2017-10-01 9:56 ` Laszlo Ersek
2017-10-03 16:03 ` Brijesh Singh
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