基于域的自主式信任模型的研究

网格环境中的信任问题是当前网格研究的一个热点问题,为了解决网格环境的动态性和不确定性带来的安全问题,本文提出了一种新的信任模型来处理网格环境中实体之间的信任关系,该模型对域内信任关系和域间信任关系分别采取不同的方法进行处理。实验和分析结果表明,与以往的信任模型相比,这种信任模型能更加精确地评估实体之间的信任关系,从而能更加有效地解决网格环境中存在的安全问题。

One Behavior Trust Model based on Autonomous Region

A grid computing system is a high performance distributed environment, which is composed of heterogeneous geographically-distributed computers and resources,with the intent of providing users transparent access to or sharing the resources and providing region-to-region close interactions.To guarantee this sharing and interaction more reliable and attractive, the trust is introduced in grid, including identity trust and behavior trust. Identity trust is concerned with verifying the entity authenticity and determining the entity authorizations; while behavior trust deals with a wider notion of trustworthiness, entities can adjust and update mutual trust relationship timely through their past transaction experiences.In this paper, we lay emphasis on the definition and the computation of behavior trust. Furthermore a new behavior trust grid architecture model is provided. At the end, the application of the model is demonstrated in detail through an example.