Tree Based Conference Key Establishment Cost Analysis and Minimization in Heterogeneous Networks.
Zhan Liu, Mi Lu · 2006
works A shared secret, conference key, must be established among members to securely communicate among them. The Diffie-Hellman is often used for the conference key establishment. In a heterogenous network, the participants have different resources. Therefore, different burden should be placed on dif-ferent participants. However, most protocols did not address this problem. Wade Trappe et. al. ad-dressed this problem considering the computational power minimization for Perrig protocol. In this pa-per, we will consider minimization of the cost with considering the transmission since transmission con-sumes most of the energy. A cost analysis and a minimum cost protocol with or without constraints are presented. 1