Calendar of Events - Event

Event Scheduled for Nov 16, 2012

Event: ECE Seminar - Generating keys from wireless fading channels - presented by Lifeng Lai, Worcester Polytechnic Institute

Location: Information Technologies Engineering Building (ITEB) room 127

Time: 02:00 pm

Details of Event:
Please join us at the ECE Seminar
Generating keys from wireless fading channels

Lifeng Lai, Worcester Polytechnic Institute

Friday, Nov 16, 2 PM, ITEB 127

Abstract: In this talk, we will discuss how to generate information theoretically secure keys using wireless fading channels. First, a key agreement protocol that exploits the random channel gain as random sources for pairwise key agreement is presented. Compared with the popular wiretap channel approach for physical layer security, this approach requires little knowledge about Eve and the performance of this approach will not saturate when the available power increases. Second, this protocol is extended to the scenario with an active attacker whose goal is to minimize the key rate that can be generated using our protocol. The attackerís optimal attack strategy is identified. The key rate under this attack model is then characterized. Finally, we discuss how to extend this point-to-point setup to the network setup. We will discuss how to exploit user cooperation to increase the key rate, how to use the pair-wise key agreement protocol to build efficient protocols for group key agreement and for generating multiple keys simultaneously. We will highlight connections between key generation problems under the network setup and various network optimization problems.

Biography: Dr. Lifeng Lai received the B.E. and M. E. degrees in Information Science and Electrical Engineering from Zhejiang University, Hangzhou, China in 2001 and 2004 respectively, and the PhD degree in Electrical and Computer Engineering from the Ohio State University at Columbus, OH, in 2007. He was a postdoctoral research associate at the Department of Electrical Engineering, Princeton University from Sept. 2007 to Aug. 2009 and an assistant professor at University of Arkansas, Little Rock from Aug. 2009 to July 2012. He joined the Department of Electrical and Computer Engineering at Worcester Polytechnic Institute as an assistant professor in Aug. 2012.
Dr. Lai received the Best Paper Award from IEEE Global Communications Conference (Globecom) in 2008, the Best Paper Award from IEEE International Conference on Communications (ICC) in 2011, the Faculty Early Career Development (CAREER) Award from the National Science Foundation in 2011, Northrop Young Researcher Award from University of Arkansas, Little Rock in 2012, and the Best Paper Award from IEEE International Conference on Smart Grid Communications in 2012.

If you have any questions, please contact:Shengli Zhou

Sponsored By: Electrical and Computer Engineering

Pamphlet/Flyer: No Pamphlet/Flyer Available

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