Am 03.06.20 um 07:27 schrieb Chris Murphy:
> You trust the encryption only to provide confidentiality of your data
> from the attacker. Not as a means of detecting an attack on your data.
> And also this isn't really just user data, the hibernation image is
> the kernel. If it's really compromised, it's a complete end run around
> the guarantees of Secure Boot so necessarily it can't be weaker than
> that implementation or the whole implementation is weakened. If it's
> easier to exploit via the hibernation image, that's what attackers
> will do.
>

making an unencrypted image tamper safe by signing it, is just
unnecessary work frpm the POV of security as it stays insecure:

a) an attacker can read the content and gain informations
b) he can change the data on disk and just wait for a reboot.

Signing the image for the pure integrity of the data structures to be
(technically) "safe" to load
is a whole different story and a gerneral good idea.  But don't mix
"safe" with "secure", it's not secure.

Best regards,
Marius
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