Group-Based Authentication and Key Agreement

Authors:
Yu-Wen Chen;Jui-Tang Wang;Kuang-Hui Chi;Chien-Chao Tseng
Affiliations:
Institute of Computer Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan;Information and Computer Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan;Department of Electrical Engineering, National Yunlin University of Science and Technology, Yunlin, Taiwan;Institute of Computer Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan
Venue:
Wireless Personal Communications: An International Journal
Year:
2012

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Abstract

This paper presents an authentication and key agreement protocol to streamline communication activities for a group of mobile stations (MSs) roaming from the same home network (HN) to a serving network (SN). In such a roaming scenario, conventional schemes require the SN to interact with the HN for authenticating respective MSs, at the cost of repeated message exchanges and communication delay. Instead, in our design, when the first MS of a group visits, the SN performs full authentication with the concerned HN and thereby obtains authentication information for the MS and other members. Thus when any other MS of the same group visits, the SN can authenticate locally without subsequent involvement of the HN, so as to simplify protocol operations. We will show that our scheme does not trade performance for security and robustness to the extent that security requirements are unduly weakened. Both qualitative and quantitative discussions indicate that our proposed scheme lends itself to pragmatic settings.