Power guest secure boot with key management: GRUB2 portion

[bugproxy]

Covering the GRUB2 portion:

Feature:

This feature comprises PowerVM LPAR guest OS kernel verification using static keys to extend the chain of trust from partition firmware to the OS kernel. GRUB and the host OS kernel are signed with 2 separate public key pairs. Partition firmware includes the the public verification key for GRUB in its build and uses it to verify GRUB. GRUB includes the public verification key for the OS kernel in its build and uses it to verify the OS kernel image

Test case:

If secure boot is switched off, any GRUB and kernel boots.
If secure boot is switched on:
  - Properly signed GRUB boots.
  - Improperly signed GRUB does not boot.
  - Tampered signed GRUB does not boot.
  - Properly signed kernels boot.
  - Improperly signed kernels do not boot.
  - Tampered signed kernels do not boot.
TPM PCRs are extended roughly following the TCG PC Client and UEFI specs as they apply to POWER.

[Frank Heimes (fheimes)]

Thanks to Mate there is now an initial draft version of grub2 available in this PPA:
https://launchpad.net/~mkukri/+archive/ubuntu/power-grub/+packages
(https://code.launchpad.net/~ubuntu-uefi-team/grub/+git/ubuntu/+ref/power-sb)
that has the patch set merged (and some issues fixed with the patch set) -- but it's untested yet.

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2024-07-30 08:53 EDT-------
Do you mean this has guest secure boot with dynamic keys related patches merged?

Could you please confirm from where the patches are picked?

Thanks & Regards,
- Nayna