systemd-creds

List, show, encrypt and decrypt service credentials. More information: https://www.freedesktop.org/software/systemd/man/systemd-creds.html.

systemd-creds encrypt --name=name path/to/input_file path/to/output

systemd-creds decrypt path/to/input_file path/to/output_file

echo -n text | systemd-creds encrypt --name=name - path/to/output

echo -n text | systemd-creds encrypt --name=name --pretty - - >> service

systemd-creds encrypt --not-after="timestamp" path/to/input_file path/to/output_file