An efficient hierarchical group key management protocol for a ubiquitous computing environment

  • Authors:
  • Sangjin Kim;Taewook Ahn;Heekuck Oh

  • Affiliations:
  • School of Internet Media Engineering, Korea University of Technology and Education, Republic of Korea;Department of Computer Science and Engineering, Hanyang University, Republic of Korea;Department of Computer Science and Engineering, Hanyang University, Republic of Korea

  • Venue:
  • ICCSA'06 Proceedings of the 2006 international conference on Computational Science and Its Applications - Volume Part IV
  • Year:
  • 2006

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Abstract

We propose a new centralized hierarchical group key management protocol for a ubiquitous computing environment. The proposed scheme only uses XOR and hash operations during group key updates. Moreover, the order of the total message size sent during key updates is O(log n), where n is the size of the group. As a result, our scheme is very practical, scalable, and well suited for low-power mobile devices. We have also proved the security of our proposed protocol.