Install keyutils by entering the following commands in the terminal:
sudo apt update sudo apt install keyutils
Description:
Linux Key Management Utilities
Keyutils is a set of utilities for managing the key retention facility in the kernel, which can be used by filesystems, block devices and more to gain and retain the authorization and encryption keys required to perform secure operations.
Homepage: http://people.redhat.com/~dhowells/keyutils/
Version: 1.5.9-9.2ubuntu2
Section: misc