> If I enable FS-verity and later find that I need to patch a file to fix
> some problem, how do I as the sysadmin tell Linux that this change is
> authorized? Do I disable FS-verity for that specific file? Disable
> FS-verity globally? Add my own key to the kernel's keyring? Build and
> sign my own RPM package?
> 
> What prevents an attacker from doing the same?

I think this is a good, fair point and is a serious tradeoff in authenticating 
distributed files. However, I believe it should be possible for the user to 
securely configure a keypair and load the certificate in the fs-verity keyring 
s.t. they can sign the files they craft themselves, without allowing an 
attacker to, just like they would to normally sign things. So you could copy 
the file, modify it to your liking, (or just rebuild the rpm locally) then 
enable verity with your own signature.
_______________________________________________
devel mailing list -- devel@lists.fedoraproject.org
To unsubscribe send an email to devel-le...@lists.fedoraproject.org
Fedora Code of Conduct: 
https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: 
https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
Do not reply to spam on the list, report it: 
https://pagure.io/fedora-infrastructure

Reply via email to