Minimization of rekeying cost for contributory group communications
Document Type
Conference Proceeding
Date of Original Version
12-1-2005
Abstract
While contributory group key agreement is a promising solution to achieve access control in collaborative and dynamic group applications, the existing schemes have not achieved the performance lower bound in terms of rekeying overhead. In this paper we introduce a contributory group key agreement that achieves the performance lower bound by utilizing a novel logical key tree structure, called PFMH, and the concept of phantom user position. In particular, the proposed scheme only needs O(1) rounds of two-party Diffle-Hellman upon any single user join event and O(log n) rounds of two-party Diffle-Hellman upon any single user leave event. Both theoretical bound analysis and simulation studies show that the proposed scheme achieves much lower rekeying cost than the existing tree-based contributory group key agreement schemes. © 2005 IEEE.
Publication Title, e.g., Journal
GLOBECOM - IEEE Global Telecommunications Conference
Volume
3
Citation/Publisher Attribution
Yu, Wei, Yan Sun, and K. J. Liu. "Minimization of rekeying cost for contributory group communications." GLOBECOM - IEEE Global Telecommunications Conference 3, (2005): 1716-1720. doi: 10.1109/GLOCOM.2005.1577943.