计算机工程2013，Vol.39Issue(2)：112-118,7.DOI:10.3969/j.issn.1000-3428.2013.02.023
开放式环境下一种基于信任度的RBAC模型
An RBAC Model Based on Trust Degree in Open Environment
摘要
Abstract
In open environment, the user nodes and resource nodes are variable, and it is almost impossible to check their priorities to access different kind of resources in the system in which the traditional Role Based Access Control(RBAC) model is adapted. To simplify the access control and standardize security strategy in open system, a flexible RBAC model based on trust degree is proposed. It uses the evaluation between the user node and resource node to calculate they direct trust, and employs the evaluation among the resource nodes to get the recommended trust of the resource nodes. Using the two trust values, together with the session history of user nodes and resource nodes, the system assigns the roles as well as its corresponding priorities for the user node flexibly. It adopts the Additive-increase, Multiplicative-decrease(AIMD) algorithm, which is widely used in TCP congestion control algorithm, in the trust evaluation to punish the node with malicious behaviors.关键词
开放式环境/访问控制/评价机制/信任度/权威度/基于角色的访问控制模型Key words
open environment/ access control/ evaluation mechanism/ trust degree/ authority degree/ Role-based Access Control(RBAC) model分类
信息技术与安全科学引用本文复制引用
邓文洋,周洲仪,林思明,刘金刚..开放式环境下一种基于信任度的RBAC模型[J].计算机工程,2013,39(2):112-118,7.基金项目
国家自然科学基金资助项目(60903139,60933005) （60903139,60933005）
