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In grid computing, group communication is an important strategy to realize large-scale information resource sharing. However, it is very difficult to ensure the security of group communication in large-scale grid environment. In this paper, based on the basic theories of threshold signature and the basic characteristics of group communication in grid, we present four algorithms, including keys generating, individual signature generating and verifying, group signature generating and encrypting, decrypting and group signature verifying, which constitute the authenticated encryption mechanism for group communication in grid. Finally, we validate the correctness of the authenticated encryption mechanism proposed in this paper and analyze its security. In addition, the validity of this mechanism is verified by the experiments. The results show that it is efficient to ensure the security of group communication in grid.
Date of Conference: 28-29 Jan. 2008