Optimal Unconditionally Secure ID-Based Key Distribution Scheme for Large-Scaled Networks : Special Section on Cryptography and Information Security

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概要

• 論文の詳細を見る

• Efficient ID-based key sharing schemes are desired worldwide in order to obtain secure communications on the Internet and other related networks, and Key Pre-distribution System (KPS) is one of the majority of such key sharing schemes. The remarkable property of KPS, is that, user need only input the partner's identifier to the secret KPS-algorithm in order to share a key between them. Although this is just a small part of many advantages KPS has in terms of efficiency, an enormous amount of memory is always required to achieve perfect security. While the conventional KPS methods can establish communication links between any pair of entities in a communication system, in most of the practical communication environment, such as in a broadcast system, not all links will be required. In this article, we achieved a desirable method to remove the unnecessary communication links between any pair of entities in a communication system. In our scheme, required memory size per entity was just proportional to the number of entities of the partner's, while that in conventional KPS, it is proportional to the number of entities of the whole communication system. As an example, if an entity communicated with only 1/r others, the memory requirement is reduced to 1/r of the conventional KPS's. Furthermore, it was proven that the obtained memory size was optimum. Overall, our scheme confirmed greater efficiency to achieve secure communication particularly suited in large-scale networks.

• 社団法人電子情報通信学会の論文
• 2001-01-01

著者

• Zheng Y

  Univ. North Carolina Charlotte Nc Usa

• Zheng Yuliang

  Department Of Software And Information Systems

• Hanaoka Goichiro

  3rd Department Institute Of Industrial Science The University Of Tokyo

• IMAI Hideki

  The author is with Institute of Industrial Sience, the University of Tokyo

• Imai H

  Research Center For Information Security (rcis) National Institute Of Advanced Industrial Science An

• Imai Hideki

  3rd Department Institute Of Industrial Science The University Of Tokyo

• Hanaoka G

  National Institute Of Advanced Industrial Science And Technology

• NISHIOKA Tsuyoshi

  The author is with Information Technology R&D Center, Mitsubishi Electric Corporation

• HANAOKA Goichiro

  The authors are with the 3rd Department, Institute of Industrial Science the University of Tokyo

• ZHENG Yuliang

  The author is with the School of Network Computing, Monash University

• Nishioka T

  Mitsubishi Electric Corp. Kamakura‐shi Jpn

• NISHIOKA Tsuyoshi

  The author is with Information Technology R&D Center, Mitsubishi Electric Corporation

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