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Center for Education and Research in Information Assurance and Security

Fault Tolerant Authentication in Mobile Computing

 Bharat Bhargava

Bharat Bhargava - Purdue University

Oct 18, 2000


Survivability and secure communications are essential in a mobile computing environment. In a secure network, all the hosts must be authenticated before they communicate with rest of the Internet. Failure or mobility of the base stations that authenticate the hosts may completely detach the hosts from the rest of the network. In this talk, I describe two solutions to eliminate such a single point of failure. Both of these solutions make use of backup servers, but they differ in the way they are organized and deployed. We address the issue of scalability by the use of clusters with different request distribution strategies like round-robin, location aware forwarding, back-end forwarding etc.. This research takes ideas such as election of leader from reliable distributed systems and applies them to security problems. Relationship between reliability and security will be presented to develop survivable mobile systems. The design of a series of experiments will be discussed.

About the Speaker

Bharat Bhargava is a professor of Computer Science at Purdue University since 1984. Professor Bhargava\'s research involves both theoretical and experimental studies in secure and reliable distributed systems. His research group has implemented a robust and adaptable distributed database system called RAID, an adaptable video conferencing system and is involved in networking research using ideas of active routers, diffserv, and mobileIP. Prof. Bhargava has conducted experiments in large scale distributed systems, communications, authentication, key management, fault-tolerance and Quality of Service. His current interests are in secure mobile systems, multimedia security and QoS as a security parameter.

Professor Bhargava was the chairman of the IEEE Symposium on Reliable and Distributed Systems held at Purdue in October 1998. Professor Bhargava is on the editorial board of three international journals. In the 1988 IEEE Data Engineering Conference, he and John Riedl received the best paper award for their work on \"A Model for Adaptable Systems for Transaction Processing.\" Professor Bhargava is a fellow of Institute of Electrical and Electronics Engineers and Institute of Electronics and Telecommunication Engineers. He has been awarded the charter Gold Core Member distinction by IEEE Computer Society for his distinguished service. He received Outstanding Instructor Awards, from the Purdue chapter of the ACM in 1996 and 1998. He has received IEEE Technical Achievement award for his contributions to foundations of adaptability in communication and distributed systems in 1999.

Unless otherwise noted, the security seminar is held on Wednesdays at 4:30P.M. STEW G52 (Suite 050B), West Lafayette Campus. More information...


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