普适计算环境下信任管理模型的研究

Research on the Trust Management Model for Pervasive Computing

普适计算环境下,各种资源、设备、应用以及环境均是高度动态变化的,因此如何衡量实体间的信任关系成为了一个十分重要的问题。传统的安全和认证方法基于可信第三方,而在动态的普适计算环境下,可信第三方的设置是不现实的,也是不可行的。基于以上问题,提出了一个新的普适计算信任管理模型,该模型集成了信誉和风险分析机制,考虑了多种相关因素,可以有效建立和度量各实体间的信任关系。相关仿真结果证明,该模型是行之有效的。

In pervasive computing environment, various resources, devices and applications are frequently changeable. Therefore, how to measure the trust relationship between entities has become an important problem. Those traditional authentication and security solutions are mostly based on the third trusted party, however, it is infeasible to set the third trusted entities in dynamic pervasive computing environment. Based on the status quo, a novel trust management model was presented , several essential factors were considered. A reputation module and a risk analysis module were integrated in the model, by which it can establish and measure the trust relationship between various entities effectively. The simulation results prove that the model is feasible and effective. It is applicable in dynamic pervaisve computing environments.