#!/bin/sh
SIGN_FILE=$(find /usr/lib -name sign-file)
MOK_KEY="/var/lib/shim-signed/mok/kernel.key"
MOK_CERT="/var/lib/shim-signed/mok/kernel.pem"
kernel_elf=$(readlink /boot/vmlinuz)

if [ ! -f ${MOK_KEY} ]; then
    echo "I: Signing key for Linux Kernel not found - Secure Boot not possible"
else
    echo "I: Signing Linux Kernel for Secure Boot"

    sbsign --key $MOK_KEY --cert $MOK_CERT /boot/${kernel_elf} --output /boot/${kernel_elf}
    sbverify --list /boot/${kernel_elf}

    find /lib/modules -type f -name \*.ko -o -name \*.ko.xz | while read module; do
      $SIGN_FILE sha512 $MOK_KEY $MOK_CERT $module
    done
fi