Issue #417 has been reported by Simon Brand.

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Feature #417: Show platform key on boot when secure boot is enabled
https://ticket.coreboot.org/issues/417

* Author: Simon Brand
* Status: New
* Priority: Normal
* Target version: none
* Start date: 2022-10-02
* Related links: [0] 
https://source.android.com/docs/security/features/verifiedboot/boot-flow#locked-devices-with-custom-root-of-trust
[1] https://issuetracker.google.com/issues/217720443
[2] 
https://source.codeaurora.org/quic/la/abl/tianocore/edk2/tree/QcomModulePkg/Library/BootLib/VerifiedBootMenu.c?h=LA.UM.8.9.1.r1-03800-QCS610.0&id=8e06dfd3ceeb323546d330e918d19c542d2daee2#n340
* Affected hardware: All
* Affected OS: All but Windows
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I think it is useful to show the hash of the platform key, if a different 
platform key than default (Microsoft trusted Platform Key) is the current 
platform key and secure boot is enabled. It must be shown, before the operating 
system could have been started (to avoid the OS showing it with an older UEFI, 
which lacks this feature), also it makes sense to pause the screen, so you can 
verify the hash.

Why?
To make sure the correct operation system is loading and nobody tampered the 
devices platform key and disk.

Android smartphones have this feature for several years. [0]
Please keep in mind, that the screenshots are not fully up-to-date, devices 
show not only the first 8 digits, but the full root of trust hash since a few 
months. [1]
The reference source code is available here: [2]





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