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Aiming at the deficiencies of weak adaptability due to the singleness of the role establishment method, relatively high management complexity and the security problems such as covert role promotion and privilege penetration in the existing methods, a double-tier role and organization-based cross-domain access control mechanism is proposed. The double-tier role architecture of function role and task...
Due to the problem that resource management is the foundation of authorization management and the requirement of unified description and management of resources with any type and arbitrary granularity, a finer-grained resource management model named FGRMMRBAC is proposed. An extensible organization and description method is present to manage the resource, resolving the unified description, organization...
Due to the drawbacks of lack of incentive mechanism in existing trust evaluation methods, a feedback-based trust evaluation mechanism for grid is proposed. Based on recommendation threshold and positive factor used to control the weights of the direct and indirect trust, an improved trust evaluation method is presented to compute the general trust, with highly dynamic adaptive capacity. Then, through...
In order to satisfy dynamic authorization in service-oriented grid environment, a context and trust-based grid service authorization model (CTGSA) is proposed. First, model is defined formally. Benefiting from the mapping relation of user-role, role-service and service-resource assignment, model can provide authorization using service-oriented method, which reduces the management overhead greatly...
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