npodonnell/luks_encryption_cheatsheet.md

## luks_encryption_cheatsheet.md

      
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    LUKS Encryption Cheatsheet

N. P. O'Donnell, 2021
Before you do anything, ensure you have cryptsetup installed:
sudo apt-get install -y cryptsetup
Find out correct block device

Make sure you choose the correct disk:
lsblk
Format disk with LUKS+ext4

#!/usr/bin/env bash

DEVICE=sdx
NAME=storage

sudo cryptsetup -y -v luksFormat /dev/$DEVICE
sudo cryptsetup luksOpen /dev/$DEVICE $NAME
sudo cryptsetup config /dev/$DEVICE --label $NAME
sudo dd if=/dev/urandom of=/dev/mapper/$NAME bs=8M status=progress
sudo mkfs.ext4 /dev/mapper/$NAME
sudo e2label /dev/mapper/$NAME $NAME
Unlock, map and mount the disk

Unlock / Map:
sudo cryptsetup luksOpen /dev/$DEVICE $NAME
Enter passphrase when prompted.
Mount:
sudo mkdir -p /mnt/$NAME
sudo mount /dev/mapper/$NAME /mnt/$NAME
sudo chmod 777 /mnt/$NAME
Unmount:
cd
sudo umount /mnt/$NAME