关键词: 普适计算, 访问控制, 模糊不确定性, 区间值模糊集, 模糊授权推理

Abstract: Access control is a key technique for the security of pervasive computing. However, due to the distributed, fuzzy and dynamic characteristics of pervasive computing, traditional access control theories and methods are not always suitable to security requirements for pervasive computing. Based on the interval-valued fuzzy set and fuzzy inference, this paper proposes a novel fuzzy access control paradigm to effectively describe the fuzziness and uncertainty of access control in the environment of pervasive computing, presents the new concepts of the security of fuzzy controlled system, and analyzes the security property of fuzzy controlled system so that the new theory and method of fuzzy access control are created for pervasive computing. The application instance shows that the pro-posed fuzzy access control for pervasive computing is effective.

Key words: pervasive computing, access control, fuzzy uncertainty, interval-valued fuzzy set, fuzzy authorization inference