Re: [PATCH v11 00/20] Automatic Disk Unlock with TPM2

[Gary Lin]

On Fri, Apr 12, 2024 at 12:24:36PM -0400, Stefan Berger wrote:
> 
> 
> On 4/12/24 04:39, Gary Lin via Grub-devel wrote:
> > GIT repo for v11: https://github.com/lcp/grub2/tree/tpm2-unlock-v11
> > 
> > This patch series is based on "Automatic TPM Disk Unlock"(*1) posted by
> > Hernan Gatta to introduce the key protector framework and TPM2 stack
> > to GRUB2, and this could be a useful feature for the systems to
> > implement full disk encryption.
> 
> You also need to extend the documentation with the command line steps and a
> IMO there has to be a warning for VM users that sealing to PCRs inside a VM
> is dangerous since the next packages update may bring an update to TianoCore
> UEFI/SeaBIOS/SLOF/... showing different PCR values and unsealing will not
> work then.
> 
For baremetal users, it still could happen after upgrading the firmware.
We surely need a place to notice users this situation when using PCR
0~7.

Thanks,

Gary Lin