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Yes. The PCR state after booting won't match that of the regular system, so the TPM will refuse to give up the key.
by noisem4ker 2mo ago
Yes. The PCR state after booting won't match that of the regular system, so the TPM will refuse to give up the key.
- evan_a_a 2mo agoThis is contingent on the sealing policy including PCRs that would change as a result of booting a different operating system, like PCR 11, which, when booting a UKI, contains those measurements. Only sealing against PCR 7 would allow this attack, since the default platform secure boot policy would not need to change.