sbsigntools: sbsigntools (signing utility for UEFI secure boot) sbsigntools: sbsigntools: sbsigntool is a signing utility for UEFI secure boot. sbsigntools: sbsigntools: sbsigntools: sbsigntools: sbsigntools: sbsigntools: sbsigntools: See: https://git.kernel.org/pub/scm/linux/kernel/git/jejb/sbsigntools.git/about/ sbsigntools: