Design of a lattice-based access control scheme
SMC'09 Proceedings of the 2009 IEEE international conference on Systems, Man and Cybernetics
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In 2004, Chang et al. suggested an approach that solves the problem of secret sharing with access structures in a hierarchy. They used the concept of discrete logarithm to reuse shadows, and adopted Cho [4]mechanism to achieve theproperties of hierarchical key management. However, Changk scheme requires a lot of time for computation. In this paper, we adopt one-way hash function to allow the shadows to be reused and achieve the properties of hierarchical access control. The proposed scheme is more efficient than Changk scheme.