A Fuzzy Trust Evaluation Based Access Control in Grid Environment

Due to the nowadays increasing applications of grid computing technology, the risks of grid security are growing, such as the problem of access control inter-domain in grid environment. Recently, trust management is considered as an effective approach for enhancing grid security. As the fuzzy feature of trust and the advantage of fuzzy theory for trust representation and reasoning, this paper presents a two-level fuzzy trust model for grid environment as well as an inter-domain access control method based on it. The model adopts fuzzy math theory and considers direct trust and recommended trust comprehensively between domains. Case study and simulation results show that the scheme can realize access control inter-domain in grid environment correctly and effectively.