基于开放网络环境下信任建立的博弈模型  

Game Model for Trust Establishment Based on Internet Virtual Environments

作　　者：刘继超[1,2] 曾国荪[1,2] 袁禄来[1,2] 

机构地区：[1]同济大学计算机科学与技术系,上海201804 [2]国家高性能计算机工程技术中心同济分中心,上海201804

出　　处：《计算机工程》2009年第2期167-169,213,共4页Computer Engineering

基　　金：国家"863"计划基金资助项目(2007AA01Z425);国家"973"计划基金资助项目"前期研究专项"(2007CB316502);国家自然科学基金资助项目(90718015;60673157)

摘　　要：现有的信任研究关注单个安全域内实体间的信任建立,在解决跨安全域或非集中环境下陌生实体间的信任建立问题存在不足。该文提出一种信任建立博弈模型,根据访问控制策略求解满足访问条件的初始证书交换集,并利用纳什均衡理论精减证书交换集,使得双方在获取对方最大信任的同时损失自身最小隐私。一次性披露精减后的证书交换集,节省传统的根据访问控制策略多次交换属性证书而带来的通信开销。信任博弈模型既解决了陌生实体间信任建立问题,又能有效保护实体隐私,提高信任建立效率。Recent research pays more attention on trust establishment in one securing region, there are some shortages to establish trust for the strangers in the virtual computing environment. Therefore this paper proposes a game model for trust establishment based on the game theory. It finds the coarse set of exchange credential which is generated according to local access control policies, and uses Nash Equilibrium（NE） to refine the set of exchange credential, so as to make the client and server gain the most trust but loss the least privacy. And exchanges the refined set of exchange credential at one time to save the communication time which is brought by exchange credentials time without number according to the access control policies. The game model for trust establishing not only resolves the problem of establish trust between strangers, but also improves the efficiency of trust establishment.

关 键 词：信任建立 信任管理 博弈模型 信任效用 纳什均衡 

分 类 号：TP338[自动化与计算机技术—计算机系统结构]