The Department of Computer Science at the University of Cyprus cordially invites you to the Colloquium entitled:

A Secure Data Aggregation based Trust Management Approach for Dealing with Untrustworthy Motes in Sensor Network


Speaker: Prof. Sanjay K. Madria
Affiliation: Missouri University of Science and Technology, Rolla, MO, USA
Category: Colloquium
Location: Room 148, Faculty of Pure and Applied Sciences (FST-01), 1 University Avenue, 2109 Nicosia, Cyprus (directions)
Date: Thursday, October 25, 2012
Time: 14.00-15.00 EET
Host: Andreas Pitsillides (

Efficient power management is vital for increasing the life of wireless sensor networks (WSN). The main reason is that the radio transmission consumes energy approximately three times comparing to other operations. Thus, techniques such as data aggregation have been widely used in WSN to preserve energy. Despite its appealing and powerful features, data aggregation requires a high level of security as tampering with aggregating data can be suspected due to small bit errors. We propose a comprehensive trust management approach to deal with the potential dishonest and faulty motes in sensor networks. Unlike other trust management approaches, we take into account multiple properties in leveraging between positive trust and behavior uncertainty so as to yield the projection of trust which represents truster’s confidence in the trustee node to have the capability to complete the task. We comprehensively evaluate and compare trust management schemes in the sensing environment using TOSSim simulator. The results have shown that the proposed scheme is memory efficient and provides fairly accurate results allowing sensors to appropriately adjust themselves and manage to carry out their missions during normal and extreme environment.

Short Bio:
Sanjay Kumar Madria received his Ph.D. in Computer Science from Indian Institute of Technology, Delhi, India in 1995. He is a full professor in the Department of Computer Science at the Missouri University of Science and Technology (formerly, University of Missouri-Rolla, USA) and site director, NSF I/UCRC center on Net-Centric Software Systems. He has published more than 180 Journal and conference papers in the areas of mobile data management, XML & Web Warehousing and Sensor computing. He won two three best papers awards including IEEE MDM 2011 and 2012. He is the co-author of a book in the area of web warehousing published by Springer in Nov 2003. He has organized International conferences as general co-chair (MDM, SRDS and others), workshops and presented tutorials in the areas of mobile data management and web data mangement. His research is supported by NSF, DOE, AFRL, ARL, Boeing and others. He has also been awarded JSPS (Japanese Society for Promotion of Science) visiting scientist fellowship in 2006 and ASEE (American Society of Engineering Education) fellowship at AFRL from 2008 to 2012. He received faculty excellence and research awards in 2007, 2009 and 2011 from his university for excellence in research, teaching and service. He is IEEE and ACM Distinguished Speaker, and IEEE Senior Member.

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Sponsor: The CS Colloquium Series is supported by a generous donation from Microsoft