Group key exchange protocol based on Diffie-Hellman technique in ad-hoc network

Abstract

One of the most important issue for secure communication in wireless networks is generating a common key for many participants. Analysis of Tseng's protocol (Y.-M. TSENG, T.-Y. WU, INFORMATICA 2010, 21, 2, 247-259) is done. We show that Tseng's protocol fails to establish a common key when the key generated by Diffie-Hellman protocol is not invertible. It is modified so that its correct work is guaranteed, security features are preserved, and its computational complexity in the most time consuming controller part is decreased at least three times. The Tseng's modified protocol is implemented and tested for ad-hoc WLAN with 3, 4, and 5 nodes. © 2014 ACM.