Hierarchical Based Group Key Transfer for Secure Group Communication
Kanimozhi Sakthivel1, Velumadhava Rajasekaran2, Selvamani Kadirvelu2, Kannan Arputharaj2
1Ramco Systems, India
2Department of Computer Science and Engineering, Anna University, India
Abstract: In this research paper, a scalable and efficient multicast secure protocol for large and dynamic systems that relies on trusted Key Generation Center (KGC) is proposed. In this protocol, we partition the entire group into several subgroups which is controlled by Intermediate Controller (IC). Our protocol is based on Iolus protocol and the hierarchical structure of
LKH protocol. The decomposition of subgroup is organized in an hierarchical manner as it is in the LKH protocol which helps
us to reduce the complexity for a member to join or leave from O(n) to O(log m), where n represents the number of entire group members and m represents the number of each subgroup members. Out protocol performance is compared with that of
Iolus and LKH protocol. The performance is enhanced especially when there is a member leave operation.
Keywords: Group communication, decentralized protocols, distributed protocols, logical key hierarchy and secure multicast.
Received April 6, 2012; accepted March 13, 2013