From: "Daniel P. Smith" <dpsmith.dev@gmail.com>
To: Jason Andryuk <jandryuk@gmail.com>, xen-devel@lists.xenproject.org
Cc: Ian Jackson <iwj@xenproject.org>, Wei Liu <wl@xen.org>
Subject: Re: [PATCH 1/9] docs: Warn about incomplete vtpmmgr TPM 2.0 support
Date: Fri, 7 May 2021 11:31:19 -0400 [thread overview]
Message-ID: <cea36fb6-9464-5e20-fbd7-fba367fd9ced@gmail.com> (raw)
In-Reply-To: <20210504124842.220445-2-jandryuk@gmail.com>
On 5/4/21 8:48 AM, Jason Andryuk wrote:
> The vtpmmgr TPM 2.0 support is incomplete. Add a warning about that to
> the documentation so others don't have to work through discovering it is
> broken.
>
> Signed-off-by: Jason Andryuk <jandryuk@gmail.com>
> ---
Reviewed-by: Daniel P. Smith <dpsmith@apertussolutions.com>
> docs/man/xen-vtpmmgr.7.pod | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/docs/man/xen-vtpmmgr.7.pod b/docs/man/xen-vtpmmgr.7.pod
> index af825a7ffe..875dcce508 100644
> --- a/docs/man/xen-vtpmmgr.7.pod
> +++ b/docs/man/xen-vtpmmgr.7.pod
> @@ -222,6 +222,17 @@ XSM label, not the kernel.
>
> =head1 Appendix B: vtpmmgr on TPM 2.0
>
> +=head2 WARNING: Incomplete - cannot persist data
> +
> +TPM 2.0 support for vTPM manager is incomplete. There is no support for
> +persisting an encryption key, so vTPM manager regenerates primary and secondary
> +key handles each boot.
> +
> +Also, the vTPM manger group command implementation hardcodes TPM 1.2 commands.
> +This means running manage-vtpmmgr.pl fails when the TPM 2.0 hardware rejects
> +the TPM 1.2 commands. vTPM manager with TPM 2.0 cannot create groups and
> +therefore cannot persist vTPM contents.
> +
> =head2 Manager disk image setup:
>
> The vTPM Manager requires a disk image to store its encrypted data. The image
>
next prev parent reply other threads:[~2021-05-07 15:31 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-04 12:48 [PATCH 0/9] vtpmmgr: Some fixes - still incomplete Jason Andryuk
2021-05-04 12:48 ` [PATCH 1/9] docs: Warn about incomplete vtpmmgr TPM 2.0 support Jason Andryuk
2021-05-04 17:55 ` Andrew Cooper
2021-05-07 15:31 ` Daniel P. Smith [this message]
2021-05-04 12:48 ` [PATCH 2/9] vtpmmgr: Print error code to aid debugging Jason Andryuk
2021-05-04 13:03 ` Samuel Thibault
2021-05-07 15:33 ` Daniel P. Smith
2021-05-04 12:48 ` [PATCH 3/9] stubom: newlib: Enable C99 formats for %z Jason Andryuk
2021-05-04 13:08 ` Samuel Thibault
2021-05-07 15:37 ` Daniel P. Smith
2021-05-04 12:48 ` [PATCH 4/9] vtpmmgr: Allow specifying srk_handle for TPM2 Jason Andryuk
2021-05-04 13:13 ` Samuel Thibault
2021-05-04 17:04 ` Jason Andryuk
2021-05-04 17:07 ` Samuel Thibault
2021-05-04 17:27 ` Jason Andryuk
2021-05-04 17:48 ` Samuel Thibault
2021-05-04 12:48 ` [PATCH 5/9] vtpmmgr: Move vtpmmgr_shutdown Jason Andryuk
2021-05-04 13:14 ` Samuel Thibault
2021-05-04 12:48 ` [PATCH 6/9] vtpmmgr: Flush transient keys on shutdown Jason Andryuk
2021-05-04 13:15 ` Samuel Thibault
2021-05-04 12:48 ` [PATCH 7/9] vtpmmgr: Flush all transient keys Jason Andryuk
2021-05-04 13:16 ` Samuel Thibault
2021-05-04 17:05 ` Jason Andryuk
2021-05-04 17:07 ` Samuel Thibault
2021-05-04 12:48 ` [PATCH 8/9] vtpmmgr: Shutdown more gracefully Jason Andryuk
2021-05-04 13:18 ` Samuel Thibault
2021-05-04 12:48 ` [PATCH 9/9] vtpmmgr: Support GetRandom passthrough on TPM 2.0 Jason Andryuk
2021-05-04 13:33 ` Samuel Thibault
2021-05-04 17:23 ` Jason Andryuk
2021-05-04 17:47 ` Samuel Thibault
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