A novel hierarchical key management scheme based on quadratic residues

Authors:
Jue-Sam Chou;Chu-Hsing Lin;Ting-Ying Lee
Affiliations:
Department of Information Management, Nanhua University, Chiayi, Taiwan R.O.C;Department of Computer Science, Information Engineering, Tunghai University, Taichung, Taiwan R.O.C;Department of Computer Science, Information Engineering, Tunghai University, Taichung, Taiwan R.O.C
Venue:
ISPA'04 Proceedings of the Second international conference on Parallel and Distributed Processing and Applications
Year:
2004

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Abstract

In 1997, Lin [1] proposed a dynamic key management scheme using user hierarchical structure. After that, Lee [2] brought to two comments on Lin's method. In 2002, Lin [3] proposed a more efficient hierarchical key management scheme based on Elliptic Curve. Lin's efficient scheme solves the weaknesses appearing in Lee's scheme in [1]. In this paper, we further use Quadratic Residues (Q.R.) theorem to reduce the computing complexity of Lin's method.