Iolus: a framework for scalable secure multicasting
SIGCOMM '97 Proceedings of the ACM SIGCOMM '97 conference on Applications, technologies, architectures, and protocols for computer communication
Distributed systems (2nd Ed.)
Secure group communications using key graphs
IEEE/ACM Transactions on Networking (TON)
Simple and fault-tolerant key agreement for dynamic collaborative groups
Proceedings of the 7th ACM conference on Computer and communications security
Key Agreement in Dynamic Peer Groups
IEEE Transactions on Parallel and Distributed Systems
A Secure Audio Teleconference System
CRYPTO '88 Proceedings of the 8th Annual International Cryptology Conference on Advances in Cryptology
CLIQUES: A New Approach to Group Key Agreement
ICDCS '98 Proceedings of the The 18th International Conference on Distributed Computing Systems
A Security Analysis of the Cliques Protocols Suites
CSFW '01 Proceedings of the 14th IEEE workshop on Computer Security Foundations
New multiparty authentication services and key agreement protocols
IEEE Journal on Selected Areas in Communications
Scalable secure group communication over IP multicast
IEEE Journal on Selected Areas in Communications
A dynamic key management solution to access hierarchy
International Journal of Network Management
An efficient fault-tolerant group key agreement protocol
Computer Communications
Scalable group key management protocol based on key material transmitting tree
ISPEC'07 Proceedings of the 3rd international conference on Information security practice and experience
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With the widespread use of the Internet, the popularity of group communication-based applications has grown considerably. Since most communications over the Internet involve the traversal of insecure networks, basic security services are necessary for these collaborative applications. These security services can be facilitated if the authorized group members share a common secret. In such distributed applications, key agreement protocols are preferred to key distribution protocols. In the past two decades, there have been many proposals for key agreement protocols. Most of these protocols are not efficient and limit the size of the underlying group. In this paper, we consider the scalability problem in group key agreement protocols. We propose a novel framework based on extension of the Diffie-Hellman key exchange protocol. The efficiency of our protocol comes from the clustering of the group members, where the common session key is established collaboratively by all participants. We present the auxiliary protocols needed when the membership changes. We show that our protocol is superior in complexity in both communication and computation overheads required to generate the session key.