This article introduces a Linux boot guide encryption method.

Linux boot guide encryption is a measure to improve Linux security. Here we use RedHat Linux as an example to set Linux boot guide encryption. experiment is a means to improve our technology, we must try this method to learn the technology.

Enable linux to boot the encryption method
# Vi/boot/grub. conf
# Grub. conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a/boot partition. This means that
# All kernel and initrd paths are relative to/boot/, eg.
# Root (hd0, 0)
# Kernel/vmlinuz-version ro root =/dev/sda2
# Initrd-version.img/initrd
# Boot =/dev/sda
Default = 0
Timeout = 10
Splashimage = (hd0, 0)/grub/splash.xpm.gz
Title Red Hat Linux (2.4.18-3)
Password 12345678
Root (hd0, 0)
Kernel/vmlinuz-2.4.18-3 ro root =/dev/sda2
Initrd/initrd-2.4.18-3.img
~
~
"/Boot/grub. conf" 17L, Objective C written
[Root @ localhost root] # reboot

Now, enter 12345678 as prompted.

System guidance

Note: Do not try it remotely!

Ciphertext

[Root @ localhost root] # grub-md5-crypt
Password:
$1 $ jQORq $ BbVuVrnQ60b87FlXP/aau/
[Root @ localhost root] # vi/boot/grub. conf

# Grub. conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a/boot partition. This means that
# All kernel and initrd paths are relative to/boot/, eg.
# Root (hd0, 0)
# Kernel/vmlinuz-version ro root =/dev/sda2
# Initrd-version.img/initrd
# Boot =/dev/sda
Default = 0
Timeout = 10
Splashimage = (hd0, 0)/grub/splash.xpm.gz
Title Red Hat Linux (2.4.18-3)
Password -- md5 $1 $ jQORq $ BbVuVrnQ60b87FlXP/aau/
Root (hd0, 0)
Kernel/vmlinuz-2.4.18-3 ro root =/dev/sda2
Initrd/initrd-2.4.18-3.img
~
~
"/Boot/grub. conf" 17L, 598C written
[Root @ localhost root] # reboot

The encryption settings for Linux boot guide are implemented here.

1. Solve Linux grub startup Problems
2. Detailed analysis of Linux password cracking Problems
3. View All Linux hardware information
4. Detailed parsing of Linux directory structure
5. Describes the Linux User Group Management Solution in detail.