摘要：AAA(Authentication, Autho rizatio n, Accoun ting) protocol is an information security tech nolog y that offers ecure and reliable user Authentication, Auth orization, Accoun tin g fun ctio n sy stematically in various services,p ro tocol an d wireles s n etwork as well as wire network. Cu rrently IETF(In ternet En gineering Task Force)AAA Working Grou p deal with abou t AAA proto co l an d stu dyin g with activ ity. But, recen tly it exp osingm uch problems sid e to user's an ony mity an d privacy violation. Th erefore, in this paper, AAAH(Ho meAu th entication Serv er) authenticates M obile d ev ice. after that, use ticket th at is issu ed fro m AAAH ev en ifm ove to ou tside n etwork and can be serviced offerin g authenticatio n in ou tside n etwork withou t
