基于角色的动态转授权模型的研究与实现  

Role-based dynamic delegation model

作　　者：李怀明[1] 马甜[1] 王延章[1] 

机构地区：[1]大连理工大学信息与决策技术研究所,辽宁大连116024

出　　处：《计算机集成制造系统》2007年第11期2115-2120,2194,共7页Computer Integrated Manufacturing Systems

基　　金：国家自然科学基金资助项目(70271045);辽宁省自然科学基金资助项目(2051066)。~~

摘　　要：为在转授权过程中实现双边协议和动态角色互斥约束,解决由权限共享引起的角色互斥问题,提出了基于角色的动态转授权模型。首先,对模型的核心思想进行了阐述;然后,结合离散数学的相关知识对模型中的组成元素、元素间的相互关系和转授权的约束进行了形式化描述;最后,对如何借助Agent,在兼顾动态职责分离约束的同时实施带时间限制的部分角色转授权,以及对权限共享问题的处理细节进行了阐述。To realize bilateral protocols and dynamic restriction of roles mutex,and to solve the problems arose by permission sharing,a role-based dynamic delegation model was proposed.Firstly,the main idea of the model was explained.Secondly,the constitution elements,elements relationships and delegation restrictions were expatiated with discrete mathematical expressions.Finally,details on how to achieve temporal delegation,part-role delegation,bilateral protocols,and dynamic restriction of roles mutex as well as how to solve the problem of permission sharing based on Agent in the whole delegation process were discussed.

关 键 词：双边协议 动态角色互斥约束 权限共享 基于角色的动态转授权模型 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]