Access control mechanism with dynamic authorization and file evaluation
ZHANG Yue1,2, ZHENG Dong1, ZHANG Yinghui1,2
1. National Engineering Laboratory for Wireless Security (Xi'an University of Posts and Telecommunications), Xi'an Shaanxi 710121, China;
2. State Key Laboratory of Information Security (Institute of Information Engineering, Chinese Academy of Sciences), Beijing 100093, China
Concering that the traditional access control methods fail to support dynamic authorization and file evaluation, and suffer from malicious re-sharing issue, an Access Control Mechanism with Dynamic Authorization and File Evaluation (DAFE-AC) was proposed. DAFE-AC adopted a dynamic authorization mechanism to monitor authorized users in real-time and allowed users to supervise each other. The file evaluation mechanism in DAFE-AC could dynamically update the access threshold of files. Based on the Hash/index database, DAFE-AC can ensure the uniqueness of files in the system. In DAFE-AC, a user' authorization value can dynamically change with behaviors of other users, and users can perform file evaluation to eliminate malicious re-sharing of files.
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2015, Vol. 35 
