As an application of the present invention, the present invention is applicable to, for example, a case in which {HEAD ~ a terminal authorization certificate} is issued between {TAIL ~ terminals} in a wireless ad hoc communication system 
is issued between
As an application of the present invention , the present invention is applicable to , for example , a case in which { HEAD ~ a terminal authorization certificate } is issued between { TAIL ~ terminals } in a wireless ad hoc communication system
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 HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH