Research note: A note on breaking and repairing a secure broadcasting in large networks

  • Authors:

  • Hung-Min Sun;Shiuh-Pyng Shieh;Hsin-Min Sun

  • Affiliations:

  • Department of Information Management, Chaoyang University of Technology, Wufeng, Taichung County, Taiwan 413;Department of Computer Science and Information Engineering, National Chiao Tung University, Hsinchu, Taiwan 30050;Chianan College of Science and Pharmacy, Tainan, Taiwan

  • Venue:
  • Computer Communications
  • Year:
  • 1999

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Abstract

In this note, we show that a proposed secure broadcasting scheme is insecure. We also present a modified scheme to overcome this weakness. The modified scheme has the extra advantage that each participant can derive his group keys from group identities without the need of knowing other information.