[c-nsp] OSPF passive-interface statement on ASA 8.x

[ghostonthewire]

hi

Is there a way to suppress OSPF Hellos on specified interface on ASA5510 
running 8.x software? "passive-interface" avaliable under "router 
eigrp", but not under "router ospf". I would like to make adjacencies 
possible only on backbone-faced interfaces. Cisco have forced me do 
magic tricks setting "deliberately wrong" authentication key, or I 
simply missing something?