Re: [Xen-devel] Install vTPM on Xen-4.2.2

[Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>]

On 05/29/2013 07:23 AM, Bei Guan wrote:
> Thank you for all your reply. I'll try vTPM on Xen-4.3-unstable.
>
> However, I don't have a physical TPM on my PC. Can I use the TPM emulator
> in Xen-4.3-unstable now?
>
> Thank you very much,
> Bei Guan
The current TPM Manager requires a physical TPM to be present. While
you could make things work without one, it would require patching
either the vTPM or vTPM Manager domains with an alternate sealing
mechanism for the long-term keys and source of random numbers.

> 2013/5/29 George Dunlap <George.Dunlap@xxxxxxxxxxxxx>
>
> > On Tue, May 28, 2013 at 9:00 PM, Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>
> > wrote:
> > > On 05/22/2013 09:56 AM, Bei Guan wrote:
> > > > Hi,
> > > >
> > > > I‘m trying to install vTPM based on Xen-4.2.2, linux-kernel 3.9.1 (Dom0)
> > > > and TPM emulator. However, I cannot find the TPM backed driver in this
> > > > version of Dom0 linux kernel. There is no CONFIG_XEN_TPMDEV_BACKEND in
> > the
> > > > kernel config file. The config file for Dom0 is attached. Maybe it
> > > > provides
> > > > some useful information.
> > > >
> > > > So, how to install a Xen TPM backend driver in the Dom0 linux-kernel.
> > > > Thank you very much.
> > >
> > > Unless you need to use Xen 4.2 for some reason, I would suggest using the
> > > vTPM in Xen 4.3, as it works more reliably.
> > You do realize 4.3 hasn't actually been released yet, right? :-)
> >
> > Bei Guan: We expect 4.3 to be released in the next month or so, so you
> > may wish to wait.
> >
> >   -George

--
Daniel De Graaf
National Security Agency

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