An efficient key assignment scheme for access control in a large leaf class hierarchy

Authors:
Jung-Wen Lo;Min-Shiang Hwang;Chia-Hsin Liu
Affiliations:
Department of Information Management, National Taichung Institute of Technology, 129 Sec. 3, San-min Rd., Taichung 404, Taiwan, ROC;Department of Management Information Systems, National Chung Hsing University, 250 Kuo Kuang Rd., Taichung 402, Taiwan, ROC;Graduate Institute of Networking and Communication Engineering, Chao Yang University of Technology, 168 Gifeng E. Rd., Wufeng, Taichung 413, Taiwan, ROC
Venue:
Information Sciences: an International Journal
Year:
2011

Citing 19
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Abstract

The employees of an organization are usually divided into different security classes to authorize the information retrieval, and the number of leaf classes is substantially larger than the number of non-leaf classes. Additionally, the alternations in leaf classes are more frequent than in non-leaf classes. We proposed a new key assignment scheme for controlling the access right in a large POSET (partially ordered set) hierarchy to reduce the required computation for key generation and derivation with the storage amount of data decreased.