Research On Grid Trust Model Based Directory Services Of LDAP

The trust problem in grid environment is a hot topic in current grid research. It is necessary to evaluate the network behavior of entities in grid computing in order to resolve the dependability problems due to the dynamics and uncertainty of the grid environment. Thus, evaluation of the entity's network behavior can reflect his reliability. This paper discusses the security requirements in grid environment, offers the correlative definitions of trust, compares and analyzes several existing trust models including their advantages, disadvantages and fit range, which provides the foundation for the further research work.The contributions of this dissertation are as follows.1) A new grid trust model combining the domain and independence of entities has been proposed. The model takes into account both the self-determination of grid entities and administrable of trust domain. It provides a method to analyze the trust degree of entities and the report in the grid environment. The two different trust relationships within and between domain are handled with different approaches.2) This dissertation studies how to build a trust model for grid computing. A new strategy of grid trust model based on Directory Services of LDAP has been proposed. This model is used to dispose of the trust relationships between entities in the grid environment. Experiment testifies that the trust model can restrain the complicity threat and promote reliability of system.