Survey of Research on Dynamic Trust Mechanism in Grid Environment

With depth study and application come into being of grid,security is becoming increasingly important.Trust in grid environment is an important aspect of the grid,and is an important guarantee for security.In the paper,we summarized the basic concepts and attributes of trust,and analysed trust model research status and study area in grid environment,at the same time,compared to trust models and evaluation method of grid,and put forward the main problems in the grid environment of trust.Finally,pointed out main direction of research and applications about grid in future,it offer an important reference for further development of grid.