Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2008, Vol. 31 ›› Issue (1): 92-96.doi: 10.13190/jbupt.200801.92.064

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Optimized Re-Keying Solution for Secure Multicast Using PRF and XOR Operation

LI Yang1, XIN Yang1, GAO Xue-song2, NIU Xin-xin1, YANG Yi-xian1   


  1. (1. State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2. Huawei Technologies Corporation Ltd., Beijing 100085, China)
  • Received:2007-05-27 Revised:1900-01-01 Online:2008-02-28 Published:2008-02-28
  • Contact: LI Yang

Abstract:

An optimized re-keying algorithm for secure multicast based on pseudo-random function (PRF) and exclusive OR (XOR) operation was presented. According to algorithm design concept, all updated keys with relativity were generated by PRF operation, and re-keying messages in multicast were generated by PRF and XOR operation together instead of conventional encryption and decryption. The communication cost, computation cost and storage cost are obviously decreased without destroy of the insurance of security. The simulation results of prototype under Linux verify that the optimized algorithm improves key management performance to some extent in secure multicast.

Key words: secure multicast, key management, logical key hierarchy, pseudo-random function, exclusive OR

CLC Number: