If Authentication Type is simplePassword, the
device will left adjust and zero fill to 8 oc-
tets.
Note that unauthenticated interfaces need no
authentication key, and simple password authen-
tication cannot use a key of more than 8 oc-
tets. Larger keys are useful only with authen-
tication mechanisms not specified in this docu-
ment.
When read, nsVrOspfVifAuthKey always returns a
string of length zero.