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Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2006, Vol. 7 Issue (3 ): 3-    DOI: 10.1631/jzus.2006.A0296
    
A practical and dynamic key management scheme for a user hierarchy
Jeng Fuh-gwo, Wang Chung-ming
Institute of Computer Science, National Chung Hsing University, Taichung, Taiwan 402, China; Department of Applied Mathematics, National Chiayi University, Chiayi, Taiwan 60004, China
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Abstract  In this paper, we propose a practical and dynamic key management scheme based on the Rabin public key system and a set of matrices with canonical matrix multiplication to solve the access control problem in an arbitrary partially ordered user hierarchy. The advantage is in ensuring that the security class in the higher level can derive any of its successor’s secret keys directly and efficiently and show it is dynamic while a new security class is added into or a class is removed from the hierarchy. Even the ex-member problem can be solved efficiently. Moreover, any user can freely change its own key for some security reasons.

Key wordsUser hierarchy      Key management      Rabin public key      Matrix multiplication     
Received: 20 October 2005     
CLC:  TP391  
Cite this article:

Jeng Fuh-gwo, Wang Chung-ming. A practical and dynamic key management scheme for a user hierarchy. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2006, 7(3 ): 3-.

URL:

http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2006.A0296     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2006/V7/I3 /3

[1] LEE Kok-wah, EWE Hong-tat. Multiple hashes of single key with passcode for multiple accounts[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2007, 8(8): 1183-1190.