Install donkey by entering the following commands in the terminal:
sudo apt update sudo apt install donkey
Description:
One Time Password calculator
Donkey is an alternative for S/KEY's "key" command. This means that donkey is also an alternative for "keyinit". Since the entry is printed to stdout (not to /etc/skeykeys), you can easily send it to a remote operator by e-mail (with a PGP signature or something). So, it is possible to initiate S/KEY without logging onto the console of the host.
Homepage: https://devel.ringlet.net/security/donkey/
Version: 1.0.2-1
Section: universe/net