Abstract:
among heterogeneous users/resources. The membership in grid is large and dynamic. There is a need for a SGC mechanism that is scalable as well as handles membership changes efficiently since security should not compromise the performance of grid. The dissertation focuses on providing a secure, scalable and efficient mechanism for group communication in grid. Some of the mechanisms have been analysed, of which some are found to be not secure enough while being computationally efficient. Solutions have been provided to make them secure. Some others are found to be secure but high computational overhead is involved. While each mechanism has its advantages and disadvantages, few solutions have been proposed by combining the existing techniques which are supposed to improve security while performance is not degraded. The proposed mechanisms have been implemented. Simulations have been run to prove that some of the methods are not secure and also analyse the performance of various schemes. The results of these have been provided that verify the same
