摘要：Developm en t of com puter and netwo rk is o ffering users v arious service. Howev er ex isting service m ayalso h av e several an ony mity and privacy weakness of u ser. Therefore we prop osed blind ticket b ased AAAtechn ology provid e anon ymity in ro am in g network environm en t. Our p ro tocol prov id e p riv acy andan ony mity in roaming environm en t, An d service is s eamlessly provid ed even thou gh th e mo bile devicem oves from the ho me network to the foreig n n etwork
