custom-uefi: Documents how to customize UEFI with your own keys (on Arch Linux)

[…]The goal is to have you own certificate in the Secure Boot db variable[…]Requirements: Under Arch Linux, install the packages efitools and sbsigntool.[…]

https://github.com/sebmillet/custom-uefi

https://github.com/sebmillet/custom-uefi/blob/master/customsb.md