A layered trust model based on behavior in service grid

In open service grid, to establish trust relationships among different domains is a basic problem. This paper proposes a layered trust model based on behavior to enhance grid security and extensibility. The upper layer establishes and maintains recommendation trust relationships between different domains in grid; lower layer is in charge of evaluating trust value of entities in his domain. We give an algorithm to adjust trust relationships between domains based on entities interactions, and a practical method to process recommendation trust.