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/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.