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Description: Time characteristics and spatial characteristics with the role of authorization management model is the existing RBAc research, 4J, based on adding time constraints on the role of constraints and space news, into the role of the concept level and user level, improve system security and flexibility , reduces the complexity of authorization management, and resolve the conflicting role of the licensing issue.
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一种带时间和空间约束的角色授权管理模型.pdf
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