International Journal of Computer Science Issues
Security is one of the most important aspects in all grid environments. Researchers and engineers developed many technologies and frameworks used to establish an environment, in which users can use grid capabilities in a secure manner. In traditional grid environments security is based on user authentication and authorization of user's actions on shared resources. However, this approach demands a pre-established trust relationship between the grid users and the resource providers. Security based on trust management enables dynamic creation of trust relationships between unknown parties.