【摘要】 给出了分布式环境下RBAC安全域的定义和构造 ,定义了安全域的偏序关系 ;在此基础上自下向上动态构造出基于安全域的RBAC层次模型 .该模型克服了集中式模型存在的诸多问题 ,具有可扩展性、易管理性、抗风险、高效等特点 .更多还原

【Abstract】 The definition of Role-Based Access Control security domain and its construction indistributed system was proposed. The partial order relationship in the security domain wasdefined. Based on it, a hierarchy model for Role-Based Access Control was dynamically constructed from bottom to top. A lot of shortcomings in the centralized model can be overcome in this model and its features were scalable, easy to manage, anti-risk, efficient and so on.更多还原