In mobile peer-to-peer networks, existing service discovery protocols disregard the exposure of the participating peers' privacy details (privileged information). In these methods, the participating peers must provide their identities during the service discovery process to be authorized to utilize services. However, a peer may not be willing to reveal its privileged information until it correctly identifies the service providing peer. Thus, these peers face a problem; who should reveal their identity first, the service requesting or the service providing peer. One of the protocols presented earlier to solves this problem discovers the services available in the requester's vicinity among single-hop time sync peers only. In this talk, I will discuss a privacy-preserving model based on challenged/response idea to discover services available in the mobile peer-to-peer network even when the service requester and the provider are at a multi-hop distance away. The performance studies shows that our protocol preserve the privacy in a communication efficient way with reduced false positives in comparison to this other recently proposed protocol. This talk is based on the paper appeared in 29th IEEE Proceedings of Software Reliability in Distributed Systems 2010 conference.

Monday, March 21st  1:00 pm, Gray Conference Room, ISIS

Biography:
Sanjay Kumar Madria received his Ph.D. in Computer Science from Indian Institute of Technology, Delhi, India in 1995. He is an Associate Professor, Department of Computer Science, at the Missouri University of Science and Technology (formerly, University of Missouri-Rolla), USA. Earlier he was Visiting Assistant Professor in the Department of Computer Science, Purdue University, West Lafayette, USA. He has published more than 150 Journal and conference papers in the areas of mobile computing, sensor networks, security, XML, and databases in general. He co-authored a book entitled "Web Data Management : A Warehouse Approach" published by Springer-verlag. He received faculty excellence award in 2007 & 2009, Japanese Society for Promotion of Science invitational fellowship in 2006, and Air Force Research Lab's visiting faculty fellowships from 2008-2010. His research is supported by grants NSF, DOE, Army, AFRL, UM research board, and from industry such as Boeing and Hengsoft. He is IEEE Senior Member and also a speaker under ACM DVP (Distinguished Visitor Program).