Research On PMI-based Authorization Management System In Grid

This paper proposes a PMI-based authorization management system model in grid. First, this paper gives a PMI-based authorization management system model in grid. There're two other works needed to do in this model: improving the performance of the PMI system and researching VO authorization management model. To lighten the bottleneck taken by the process that calling ACs, it gives the AC cache mechanism and gives the relative updating algorithm. Then it analyzes the essence of the authorization management system model, gives generalized delegation by extending traditional delegation, and gives generalized delegation based authorization management model (DBVOAM), it also implements DBVOAM with PMI, At last, this paper presents some simulations and researches the authorization management system model in power grid.