arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1703.02162cs.CR
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信息资源上下文感知访问控制策略模型与框架

A Policy Model and Framework for Context-Aware Access Control to Information Resources

A. S. M. Kayes, Jun Han, Wenny Rahayu, Md. Saiful Islam, Alan Colman

摘要:

在当今动态的信通技术环境中,控制用户获取资源的能力变得越来越重要。一方面,它应该适应用户不断变化的需求;另一方面,它不应该妥协。因此,必须有一个灵活的访问控制模型,结合动态变化的上下文信息。为此,本文介绍了一个上下文感知访问控制(CAAC)应用程序的策略框架,扩展了基于角色的访问控制模型与用户角色和角色权限能力的动态关联。我们首先提出了一个正式的模型CAAC政策,我们的框架。使用这个模型,然后介绍了一个基于本体的方法和软件原型建模和执行民航局的政策。此外,我们评估我们的策略本体模型和框架,考虑(i)本体概念的完整性,指定不同的上下文感知的用户角色和角色权限分配策略,从医疗保健场景;(ii)本体语义的正确性和一致性,通过医疗保健案例研究评估核心和特定领域的本体;以及(iii)通过响应时间来评估框架的性能。评估结果表明,我们的框架的可行性和量化的性能开销实现上下文感知的访问控制信息资源。

英文摘要:

In today's dynamic ICT environments, the ability to control users' access to resources becomes ever important. On the one hand, it should adapt to the users' changing needs; on the other hand, it should not be compromised. Therefore, it is essential to have a flexible access control model, incorporating dynamically changing context information. Towards this end, this paper introduces a policy framework for context-aware access control (CAAC) applications that extends the role-based access control model with both dynamic associations of user-role and role-permission capabilities. We first present a formal model of CAAC policies for our framework. Using this model, we then introduce an ontology-based approach and a software prototype for modelling and enforcing CAAC policies. In addition, we evaluate our policy ontology model and framework by considering (i) the completeness of the ontology concepts, specifying different context-aware user-role and role-permission assignment policies from the healthcare scenarios; (ii) the correctness and consistency of the ontology semantics, assessing the core and domain-specific ontologies through the healthcare case study; and (iii) the performance of the framework by means of response time. The evaluation results demonstrate the feasibility of our framework and quantify the performance overhead of achieving context-aware access control to information resources.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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