Encrypt USB-stick on Ubuntu in three steps

1. Install the required package:

sudo apt-get install cryptsetup

2. Create a partition on the USB-stick:

sudo cfdisk /dev/sdX

3. Encrypt the partition:

sudo luksformat -t ext2 /dev/sdX
Creating encrypted device on /dev/sdX...
Are you sure? (Type uppercase yes): YES
Enter LUKS passphrase:

Entering the USB-stick into Ubuntu will bring up the following window:
unlockencryptedusbstick

To edit the label of the USB-stick (by default it’s just ‘disk’) use e2label for ext filesystems and mtools for fat filesystems.

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