On Tue, Sep 02, 2025 at 09:47:15AM +0800, Gary Lin via Grub-devel wrote:
> For users who require a sealed key to be unsealable only once per boot
> process, a straightforward technique involves "capping" the key by
> extending the associated PCRs. This patch set introduces PCR capping
> support for the TPM2 key protector, allowing users to select specific
> PCRs to extend immediately after the key is unsealed.
>
> v3:
>   - Amending the conditional check for the event buffer in efi/tcg2.c
> v2:
>   - Fixing typos
>   - Moving the error message to grub_ieee1275_ibmvtpm_2hash_ext_log()
>   - Replacing 'SEPARATOR' with 'EV_SEPARATOR'

This should be GRUB_EV_SEPARATOR...

>   - Amending the conditional check for grub_tpm2_buffer.error
>   - Removing the unnecessary 'extern' from grub_tpm2_pcr_event()
>
> Gary Lin (7):
>   tss2: Add TPM2_PCR_Event command
>   tss2: Introduce grub_tcg2_cap_pcr()
>   tss2: Implement grub_tcg2_cap_pcr() for EFI
>   tss2: Implement grub_tcg2_cap_pcr() for ieee1275
>   tss2: Implement grub_tcg2_cap_pcr() for EMU
>   tpm2_key_protector: Support PCR capping
>   tests/tpm2_key_protector_test: Add a test for PCR Capping

Except a nitpick mentioned above for all patches Reviewed-by: Daniel Kiper 
<[email protected]>...

Daniel

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