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DOI:
Journal of Software:2003.14(11):1841-1848

工作流系统带权角色与周期时间访问控制模型
王小明,赵宗涛,郝克刚
(陕西师范大学,计算机科学学院,陕西,西安,710062;西北大学,计算机科学系,陕西,西安,710069)
A Weighted Role and Periodic Time Access Control Model of WorkFlow System
WANG Xiao-Ming,ZHAO Zong-Tao,HAO Ke-Gang
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Received:January 09, 2003    Revised:January 09, 2003
> 中文摘要: 带权角色激活任务和周期时间授权是工作流系统访问控制研究尚未解决的核心问题.以基于角色的访问控制模型为基础,提出了一种新的工作流系统带权角色与周期时间访问控制模型WRPTAC(weighted role and periodic time access control).讨论了周期时间表示方法,定义了工作流系统授权新概念和时态授权推导规则,给出了时间复杂度为O(n2)的时态授权推导规则一致性验证图论算法,并定义了任务激活约束规则.它能够表达复杂的工作流系统访问控制约束.
中文关键词: 工作流  任务  周期时间  带权角色  授权约束
Abstract:A weighted role for activating task and periodic time authorization is an unsolved major problem for the access control of a workflow management system (WfMS). In this paper, a novel weighted role and periodic time access control (WRPTAC) model for WfMS is proposed on the basis of a role-based access control model. The periodic time expression method is discussed and then the new authorization concepts and the temporal authorization derivation rules for WfMS are defined respectively. An algorithm based on the graph theory for verifying the consistency of all the authorization derivation rules is presented, which has the time complexity of O(n2). The constraint rule for activating task is defined, which can express complex access control constraints for WfMS.
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基金项目:Supported by the National Natural Science Foundation of China under Grant No.90204012 (国家自然科学基金); the National High-Tech Research and Development Plan of China under Grant No.2002AA143021 (国家高技术研究发展计划(863)) Supported by the National Natural Science Foundation of China under Grant No.90204012 (国家自然科学基金); the National High-Tech Research and Development Plan of China under Grant No.2002AA143021 (国家高技术研究发展计划(863))
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王小明,赵宗涛,郝克刚.工作流系统带权角色与周期时间访问控制模型.软件学报,2003,14(11):1841-1848

WANG Xiao-Ming,ZHAO Zong-Tao,HAO Ke-Gang.A Weighted Role and Periodic Time Access Control Model of WorkFlow System.Journal of Software,2003,14(11):1841-1848