systemd-random-seed.service, systemd-random-seed − Load and save the system random seed at boot and shutdown
systemd−random−seed.service
/usr/lib/systemd/systemd−random−seed
systemd−random−seed.service is a service that restores the random seed of the system at early−boot and saves it at shutdown. See random(4) for details. Saving/restoring the random seed across boots increases the amount of available entropy early at boot. On disk the random seed is stored in /var/lib/systemd/random−seed.
systemd(1), random(4)