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CLC number: TP391
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Received: 2005-10-20
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A practical and dynamic key management scheme for a user hierarchy
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Jeng Fuh-gwo, Wang Chung-ming. A practical and dynamic key management scheme for a user hierarchy[J]. Journal of Zhejiang University Science A, 2006, 7(3): 296-301.
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author="Jeng Fuh-gwo, Wang Chung-ming",
journal="Journal of Zhejiang University Science A",
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doi="10.1631/jzus.2006.A0296"
}
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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.
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