Hello Chris, As Petr Pisar said it, last Fedora's kernel uses a compiled binary software sign-file file. It is still a perl script in RHEL. Your command line should work if you remove perl invocation: /usr/src/kernels/4.19.14-300.fc29.x86_64/scripts/sign-file sha256 /home/chris/MOK.priv /home/chris/MOK.der providing you enrolled your public key in MOK with mokutil. Concerning compressing modules, they have to be built, stripped (if needed), signed and compressed, in that order to make them work with secure boot. So if the build process compresses your modules automatically, you have to decompress them before signing, and re-compress them after signing. Hope this will help you. Cordially, -- NVieville _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx