Security Lab Seminar

4/2/03 - 2 p.m. - EU #11331

Speaker: Fan Zhao

Topic: "RBWA: An Efficient Random-Bit Window-based Authentication Protocol"

Abstract: Given the wide and rapid deployment of visitor networks [1], how to authenticate the user and account the usage on the per-packet basis securely and yet efficiently is still a challenging problem. In this paper, we explore the tradeoff between performance and security, and propose a per-data-packet authentication and access control protocol called RBWA (Random-Bit Window-based Authentication). RBWA is in the IP layer, which means that it can work with various underlying linker-layer specific mechanisms and network topologies. And comparing to IPSec, it dramatically reduces the overhead and power consumption by only adding a few bits to each data packet. Furthermore, RBWA is strong against a suite of attacks such as replay, Denial-of-Service attack, and eavesdropping. In particular, a robust anti-replay window scheme is developed to counter the packet reordering. The performance of RBWA is evaluated via the simulation.