Current grid authentication frameworks are achieved by applying the standard SSL authentication protocol (SAP).The authentication process is very complicated,and therefore,the grid user is in a heavily loaded point both in computation and in communication.Based on identity-based architecture for grid (IBAG) and corre-sponding encryption and signature schemes,an identity-based authentication protocol for grid is proposed.Being certificate-free,the authentication protocol aligns well with the demands of grid computing.Through simulation testing,it is seen that the authentication protocol is more lightweight and efficient than SAP,especially the more lightweight user side.This contributes to the larger grid scalability.
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