a terminal authorization certificate table that stores the second terminal authorization certificate indicating access rights of the terminal for a network that is shared by a plurality of terminals including the terminal and the second terminal authorization certificate is used by each of the plurality of {HEAD ~ terminals} to determine {TAIL ~ access rights} to the network 
to determine
a terminal authorization certificate table that stores the second terminal authorization certificate indicating access rights of the terminal for a network that is shared by a plurality of terminals including the terminal and the second terminal authorization certificate is used by each of the plurality of { HEAD ~ terminals } to determine { TAIL ~ access rights } to the network
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH