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计算机工程 ›› 2013, Vol. 39 ›› Issue (4): 146-150. doi: 10.3969/j.issn.1000-3428.2013.04.034

• 安全技术 • 上一篇    下一篇

基于信任度和协作安全策略的委托模型

孙 伟1,汪 磊2   

  1. (1. 信阳师范学院计算机与信息技术学院,河南 信阳 464000;2. 信阳供电公司,河南 信阳 464000)
  • 收稿日期:2012-04-28 出版日期:2013-04-15 发布日期:2013-04-12
  • 作者简介:孙 伟(1981-),男,讲师、硕士,主研方向:访问控制,安全模型;汪 磊,工程师
  • 基金资助:
    河南省教育厅科学技术研究基金资助重点项目(13A520765);河南省信息技术教育研究基金资助项目(ITE12192)

Delegation Model Based on Trust Degree and Secure Strategy of Collaboration

SUN We   1, WANG Lei    2   

  1. (1. School of Computer and Information Technology, Xinyang Normal University, Xinyang 464000, China; 2. Xinyang Power Supply Company, Xinyang 464000, China)
  • Received:2012-04-28 Online:2013-04-15 Published:2013-04-12

摘要: 为提高委托过程的可信度并保证系统的安全性,提出一种基于信任度和协作安全策略的委托模型。利用信任资历、信任经验和信任推荐综合计算不同用户的信任度,选取值得信任的受托对象,采用互斥角色约束间接实施协作分工策略的方法,进一步选取保证系统安全性的受托对象。理论分析与应用实例证明,与现有模型相比,该模型通过量化计算信任度及最小约束构造算法确定的受托用户能够较好地体现委托的可靠性,并且满足系统状态的安全性要求。

关键词: 委托, 信任度, 协作分工策略, 信任资历, 信任经验, 信任推荐

Abstract: In order to enhance reliability in delegations and ensure system security, this paper proposes a delegation model based on trust degree and secure strategy of collaboration. Trust qualifications, trust experiences and trust recommendations are utilized to comprehensively compute trust values, and trustworthy candidates with higher values are chosen. Mutually exclusive role constraints are adopted to indirectly enforce division policy of collaboration, and the most appropriate delegate is chosen in the secure collaborative environment. Compared with existing models, theoretical analyses and experimental results show that the model can efficiently reflect reliability in delegations, and it satisfies requests of system security.

Key words: delegation, trust degree, policy of collaboration division, trust qualification, trust experience, trust recommendation

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