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《Computer Engineering》 2006-12
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Secure Efficient Hierarchical Key Management in Distributed Environments

LU Jianzhu,CHEN Huoyan(Department of Computer Science,Jinan University,Guangzhou 510632)  
The paper presents a secure efficient hierarchical key management scheme in order to solve the dynamic access control problems in distributed environments.By using the scheme based on the one-way function,each security class chooses randomly and independently a secret key that can be used to derive his successors’ secret keys efficiently.The dynamic key management problem,such as adding/ deleting classes,and changing secret key,are discussed.Moreover,an improved Lin’s scheme can be derived from the scheme,which overcomes the two vulnerabilities issued by Lee and Hwang,in addition,it is more efficient than other improvement of Lin’s,such as Rhee’s scheme,Chen-Chung scheme,in terms of computational complexities.
【Fund】: 国家自然科学基金资助项目(60173038 69873020);; 广东省自然科学基金资助项目(010421 000759 980690)
【CateGory Index】: TP393.08
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