luks-encrypt an entire drive with a randomly-generated keyfile in one command.
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Keith Irwin 0230616ce4
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README.md

luksit

luks-encrypt an entire hard drive using a randomly-generated keyfile.

Origins

I based on a tutorial on a github gist that's now down. I found a cached version on bing. That original tutorial can be found in original-tutorial.md.

Installation

Linux & friends

git clone https://gitea.gf4.pw/ki9/luksit.git /usr/local/src/luksit
ln -s /usr/local/src/luksit/luksit /usr/local/bin/luksit

Usage

WARNING! This program will wipe any drive you feed it and replace it with an empty luks-encrypted filesystem. Always read command line prompts before typing 'y'. Always double-check the device filename. Always keep backups of your important data. I am not responsible for misuse of this program.

First, find the device name of the target drive. I use the lsblk command. Others prefer fdisk -l. Check and double check. If you go by the size, ensure you have no other drives of that size.

Assuming the target device file is /dev/sdf, you can create a luks-encrypted ext4 filesystem on that drive by running this command. You can change mydrive to something more memorable. The decryption key will be saved to /root/luks/mydrive.key unless you modify the $KEYDIR var in the script.

luksit sdf mydrive ext4

Mounting on boot

The script does not yet support adding lines to /etc/fstab or /etc/crypttab. Consult the "automountable" section in original-tutorial.md for help with automounting the drive.

License

luksit - Luks-encrypt drives with a single command
Copyright © 2021 Keith Irwin www.ki9.us

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.