A Practical Implementation of Hierarchically Structured Key Predistribution System and Its Evaluation

  • Daisuke Nojiri
  • Goichiro Hanaoka
  • Hideki Imai
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1975)


In Key Predistribution Scheme(KPS) and One-Time use Broadcast Encryption Schemes(OTBES) a Trusted Authority(TA) generates secret information and distributes part of it to users. It also has to observe users’ dishonest acts to prevent collusion attacks. However, these tasks can be heavy for a TA if there are a large number of users in the system. In this paper, we propose Hierarchically Structured KPS(HS-KPS) as an effective solution for this problem. Then we evaluate its performance in terms of efficiency, security and memory size.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Daisuke Nojiri
    • 1
  • Goichiro Hanaoka
    • 1
  • Hideki Imai
    • 1
  1. 1.The Third Department, Institute of Industrial Sciencethe University of TokyoMinato-ku, TokyoJapan

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