linux ubuntu驱动签名

Aug 23 07:07:16 ubuntu kernel: JWNetFilter: loading out-of-tree module taints kernel.
Aug 23 07:07:16 ubuntu kernel: JWNetFilter: module verification failed: signature and/or required key missing - tainting kernel
Aug 23 07:07:16 ubuntu kernel: JWNetFilter: [INFO] [NetFilter.c:485] (JwNet_init) - JwNet_init net connect module init
Aug 23 07:07:16 ubuntu kernel: JWNetFilter: [INFO] [NetFilter.c:489] (JwNet_init) - JwNet_init black white port module init
Aug 23 07:07:16 ubuntu kernel: JWNetFilter: [INFO] [NetFilter.c:496] (JwNet_init) - JwNet_init netlink module init
Aug 23 07:07:16 ubuntu kernel: JWNetFilter: [INFO] [NetFilter.c:506] (JwNet_init) - JwNet_init netfilter hook init
Aug 23 07:07:16 ubuntu kernel: JWNetFilter: [INFO] [NetFilter.c:509] (JwNet_init) - Synctimer init
Aug 23 07:30:25 ubuntu kernel: JWNetFilter: [INFO] [NetFilter.c:518] (JwNet_exit) - JwNet_exit  nf_unregister_hooks
Aug 23 07:30:25 ubuntu kernel: JWNetFilter: [INFO] [NetFilter.c:520] (JwNet_exit) - Sync timer exit
Aug 23 07:30:25 ubuntu kernel: JWNetFilter: [INFO] [netlink.c:273] (netlink_exit) - netlink release ok
Aug 23 07:30:25 ubuntu kernel: JWNetFilter: [INFO] [NetFilter.c:522] (JwNet_exit) - JwNet_exit  netlink exit
Aug 23 07:30:25 ubuntu kernel: JWNetFilter: [INFO] [NetFilter.c:525] (JwNet_exit) - JwNet_exit  net_connect_thread_exit
Aug 23 07:30:25 ubuntu kernel: JWNetFilter: [INFO] [NetFilter.c:528] (JwNet_exit) - JwNet_exit  black white port exit
Aug 23 07:31:12 ubuntu kernel: JWNetFilter: [INFO] [NetFilter.c:485] (JwNet_init) - JwNet_init net connect module init
Aug 23 07:31:12 ubuntu kernel: JWNetFilter: [INFO] [NetFilter.c:489] (JwNet_init) - JwNet_init black white port module init
Aug 23 07:31:12 ubuntu kernel: JWNetFilter: [INFO] [NetFilter.c:496] (JwNet_init) - JwNet_init netlink module init
Aug 23 07:31:12 ubuntu kernel: JWNetFilter: [INFO] [NetFilter.c:506] (JwNet_init) - JwNet_init netfilter hook init
Aug 23 07:31:12 ubuntu kernel: JWNetFilter: [INFO] [NetFilter.c:509] (JwNet_init) - Synctimer init

2013  ls
 2014  openssl req -new -x509 -newkey rsa:2048 -keyout MOK.priv -outform DER -out MOK.der -nodes -days 36500 -subj "/CN=Module Signature Key/"
 2015  ls
 2016  sudo find / -name "sign-file"
 2017  clear
 2018  ls
 2019  cp /home/lyd/hostprotect/demo/kernel/NetFilter/JWNetFilter.ko .
 2020  ls
 2021  sudo ./usr/src/linux-headers-5.4.0-150-generic/scripts/sign-file sha256 MOK.priv MOK.der JWNetFilter.ko 
 2022  /usr/src/linux-headers-5.4.0-150-generic/scripts/sign-file sha256 MOK.priv MOK.der JWNetFilter.ko 
 2023  rmmod JWNetFilter
 2024  sudo rmmod JWNetFilter
 2025  lsmod
 2026  clear