Institute of Electrical & Electronic Engineers
Increasing numbers of mobile users are being allowed to use wireless networks, and universal access is being promoted. In the absent of a single, trusted authentication server, it is a great challenge to ensure the inter-domain security, which makes it feasible for users to migrate into foreign domains. Thus, an authentication mechanism is needed between mobile users and foreign servers, and an authenticated key also is highly desirable to support secure communications in wireless networks. In addition, maintaining the anonymity of users is an important security requirement, such as the information about customer's behaviors.