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A Certificateless Authenticated Group Key Agreement Protocol Providing Forward Secrecy

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3 Author(s)
Eun-Jung Lee ; Dept. of Inf. Security, Kyungpook Nat. Univ., Daegu ; Sang-Eon Lee ; Kee-Young Yoo

As there is growth in the need of applications such as video conferencing and interactive chatting, secure group communication is an important research area. Security in these applications is necessary to provide services like privacy, data-integrity, and non-repudiation to group members. A naive way to achieve security in such groups is to have a secret key among every node. This task is achieved by means of a contributory group key agreement protocol that each member directly contributes to key management and generation. In 2007, Heo et al. [4] proposed certificateless authenticated group key agreement (CAGKA) protocol. While their protocol provides efficient communication and computation complexity, it does not provide (perfect) forward secrecy desired for a secure group key agreement protocol. In this paper, a certificateless authenticated group key agreement protocol is proposed based on CCEGK and EAGKA. The proposed protocol also satisfies security requirements and is suitable for dynamic membership events.

Published in:

Ubiquitous Multimedia Computing, 2008. UMC '08. International Symposium on

Date of Conference:

13-15 Oct. 2008