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Seminar: ECE Faculty Candidate Friday April 21 11:00 – 11:50am KEC 1007 Loukas Lazos Securing Network Services and Protocols
for Infrastructureless Wireless Networks Major challenges in realizing reliable
and resource-efficient network services for wireless networks in the absence of
infrastructure, are tentatively being addressed by the development of
collaborative, cross-layer protocols. At present, security in wireless network
designs is added as an after thought overlay, an approach that has migrated
from our experiences in infrastructure-based wired networks. In this talk, I
advocate that reliability, resource-efficiency and layer transparency cannot be
considered disjointedly from network security, when wireless networks operate
untethered in hostile environments. Network nodes must be able to verify that
the information to be processed comes from a trustable source (authenticity),
has not been altered in transit (integrity), is fresh (freshness), is local
(locality verification) and restricted to authorized parties (confidentiality).
Providing effective security in resource-constrained environments that are
vulnerable to side-channel attacks requires a multi-modal approach in which
cryptography is only one primitive/building block. I show the need for
multi-modality by illustrating a series of vulnerabilities on location
estimation methods proposed for wireless sensor networks in non-adversarial
setting, and present a distributed passive solution for achieving
resource-efficient secure location estimation. I also present a cross-layer
design for resource-efficient group communications in wireless ad hoc networks. Biography: Loukas Lazos received his Diploma in
Engineering Degree in Electrical and Computer Engineering from the National
Technical University of Athens, Greece, in 2000. In 2001, he joined the Network
Security Lab at the Electrical Engineering Department at the |
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