动态信任模型及其在移动代理环境中的应用  

Dynamic trust model and its application in mobile agents

作　　者：宋卫卫[1] 叶震[1] 岳磊[1] 

机构地区：[1]合肥工业大学计算机与信息学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2009年第1期73-77,104,共6页Journal of Hefei University of Technology：Natural Science

摘　　要：文章提出了一种新的移动代理安全模型,该模型是信任模型、风险评估和密码系统三者结合的移动代理安全模型。它具有动态性,可以实现实时更新;具有全面性,可以实现主观判断和客观判断的结合;具有灵活性,可以使模型适应性更广。在分析移动代理面临的安全问题和信任本身特性的基础上定义信任以及信任关系,对已有的信任更新函数和推荐者评价函数进行了改进,并就信任而产生的安全问题进行了分析,最后表明该模型具有灵活的动态适应性及安全性。A new philosophy of secure mobile agent model based on the trust model, venture evaluation and cryptography is put forward. This model is dynamic so real-time updating can be achieved, and it is comprehensive for combining subjective estimation and objective estimation, and the model is so agile that it is broadly adaptive. Trust and trust relationship are defined based on the analysis of the security problem of mobile agents and the characters of trust itself. And the existing trust updating function and the recommender evaluation function are improved. The security problems resulting from trust are discussed, which indicates that this model is flexible, dynamic and secure.

关 键 词：移动代理 信任模型 安全模型 风险评估 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]