[Bug 2064319] Re: Power guest secure boot with key management: GRUB2 portion

[Frank Heimes]

Hi Nayna,
I believe that Mate took the patches from the discussion upstream.
Afaict it is still not merged, nor officially upstream accepted (last time I checked).

We (esp. Mate) just picked it and created an early grub2 package in PPA
for checking and testing. It is not in the archives yet - for that
upstream acceptance is mandatory.

The code of this test package can be found here:
https://code.launchpad.net/~ubuntu-uefi-team/grub/+git/ubuntu/+ref/power-sb
respectively here:
https://git.launchpad.net/~ubuntu-uefi-team/grub/+git/ubuntu/log/?h=power-sb
with (as you can see) some additional adjustments ...

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https://bugs.launchpad.net/bugs/2064319

Title:
  Power guest secure boot with key management: GRUB2 portion

Status in The Ubuntu-power-systems project:
  New
Status in grub2 package in Ubuntu:
  New

Bug description:
  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.

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