[clue] Rsync and root

[Jason Friedman]

I am wanting to synchronize two filesystems, probably with rsync, and
I want to include owner/group/permissions as part of the
synchronization.
Files could be owned by anyone, so ideally the command would be issued as root.
For root to connect to another host as root, absent someone typing a
password, SSH keys could be exchanged, or one can use RSH and .rhosts
(unencrypted).
If my organization discourages the use of RSH and discourages the use
of exchanging root's keys (but accepts the exchanging of non-root
keys), what are my options?