On Trayeliing incognito
Amir Herzberg, Hugo Krawczyk, Gene Tsudik · 1995
User mobility is rapidly becoming an important and popular feature in today's networks. This is especially evident in wireless/cellular environments. While use ful and desirable, user mobility raises a number of im portant security-related issues and concerns. One of them is the issue of tracking mobile user's movements and current whereabouts. Ideally, no entity other than the user himself and a responsible authority in the user's home domain should know either the real iden tity or the current location of the mobile user. At present, environments supporting user mobility either do not address the problem at all or base their solu tions on the specific hardware capabilities of the user's personal device, e.g., a cellular telephone. This paper discusses a wide range of issues related to anonymity in mobile environments, reviews current state-of-the-art approaches and proposes several poten tial solutions. Solutions vary in complexity, degree of protection and assumptions about the underlying envi ronment.