Restricting Secure Boot to openSUSE keys only

This procedure might brick your device. The contents are not yet fully verified and should not be used in any productive setup. Proceed with caution, you have been warned If you are confused by the whole key nomenclature in UEFI, go and see this excellent blog post for a summary of the different UEFI key types. I write this blog post as a draft/guide for some people to check and verify before putting this into a more official place. Please check before you type, make sure you understand what’s going on here. If you feel uneasy modifying a system on a UEFI level, then this guide is certainly not for you.