A Modified Otway-Rees Protocol to Overcome Triple MAB Vulnerability

Abstract

With growth of internet and wireless networks all around the world, information security has taken a central stage to protect commercial and well as personal data. Key exchange algorithms play an important role in information security. In this paper we study the Otway-Rees protocol and its vulnerabilities and propose a modified Otway-Rees protocol to overcome them. We then evaluate performance of the protocol from various points of view such as execution time, encryption speed and power consumption by comparing the original and proposed protocols. We find that although the original protocol is faster, the difference in speed is not significant and the modified protocol protects against vulnerability resulting in the best choice between the two protocols.