Talk Title and Abstract

Secure communication in ad hoc networks

For many years, wireless networks have been mostly single-hop: two devices, a cell phone and a base station, or a laptop and a Wi-Fi access point, communicating directly over the wireless medium. Nowadays, wireless devices are becoming increasingly versatile, powerful, embedded in our physical space, and ubiquitous. As a result, emerging wireless systems offer new valuable services but also need to be self-organized and able to communicate across multiple wireless hops. In other words, the ad hoc network abstraction is morphing into tangible instantiations, e.g., wireless sensor networks, tactical and public safety communication, or vehicular communication systems. However, the more important and prevalent wireless networks become, the more likely to be attacked they are. In fact, their openness and self-organizing operation render them vulnerable. Networking building blocks must be secured and solutions need to be effective and efficient, especially as the network size grows. This is exactly the focus of this talk: secure and fault tolerant communication in ad hoc networks, from its outset to recent results; including secure neighborhood discovery, secure route discovery, and secure data communication. We primarily discuss concrete protocols that leverage cryptographic primitives. But we also abstract away, considering, in an information-theoretic manner, fundamental limits of secure and reliable communication.

Short Bio


Panagiotis (Panos) Papadimitratos earned his Ph.D. degree from Cornell University, Ithaca, NY, in 2005. He then held positions at Virginia Tech, EPFL and Politecnico of Torino. Panos is currently an Associate Professor at KTH, where he leads the Networked Systems Security Group. His research agenda includes a gamut of security and privacy problems, with emphasis on wireless networks. Web page: www.ee.kth.se/nss