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An Efficient Group Key Agreement Using Hierarchical Key Tree in Mobile Environment

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2018, 23(2), pp.53-61
  • DOI : 10.9708/jksci.2018.23.02.053
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science
  • Received : January 15, 2018
  • Accepted : February 14, 2018
  • Published : February 28, 2018

Seokhyang Cho 1

1평택대학교

Accredited

ABSTRACT

In this paper, the author proposes an efficient group key agreement scheme in a mobile environment where group members frequently join and leave. This protocol consists of basic protocols and general ones and is expected to be suitable for communications between a mobile device with limited computing capability and a key distributing center (or base station) with sufficient computing capability. Compared with other schemes, the performance of the proposed protocol is a bit more efficient in the aspects of the overall cost for both communication and computation where the computational efficiency of the scheme is achieved by using exclusive or operations and a one-way hash function. Also, in the aspect of security, it guarantees both forward and backward secrecy based on the computational Diffie-Hellman (CDH) assumption so that secure group communication can be made possible. Furthermore, the author proves its security against a passive adversary in the random oracle model.

Citation status

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