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Overview: How UEFI Secure Boot Works in Linux
(tiffybelle.vivaldi.net)
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this post was submitted on 13 Oct 2023
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Interesting. I guess this could be a method to allow actual full disk encryption? Unless there's a way to have grub encrypted too?
What do you mean by that? TPM and Secure boot do not manage encryption, but rather authentication and key management aspects. You still need an unencrypted UEFI partition storing your EFI binaries. This partition is always readable by an attacker, however any changes to binaries will make booting fail. Also no secrets should be stored here.
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