Module signing and post-quantum crypto public key algorithms

David Howells dhowells at redhat.com
Tue Nov 11 18:38:32 UTC 2025


Simo Sorce <simo at redhat.com> wrote:

> If a defect in a signing algorithm is found you can simply distribute a
> new kernel with modules resigned with a different algorithm.

Probably more "have to" than "can".  The cert providing the composite key for
both would have to be invalidated to stop it from being used - and invalidated
by having it added to the UEFI dbx table.

David




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