基于网格环境下的信任评估的研究

Research on Trust Evaluation Based on Grid

网格环境中的信任评估问题是当前网格研究的一个热点问题,为了解决网格环境中复杂动态的安全问题,模型提出了一个能广泛适用于具有高效率的网格等开放网络环境的方法。从使用推荐信任的历史窗口的角度来设计研究网格计算环境中的信任模型,根据信任模型算法算出实体的信任度,解决如何筛选出符合网格用户要求的资源节点,来完成用户提交的作业任务问题。引入树的深度遍历和广度遍历概念来解决网格用户与本虚拟组织内的网格实体以及其他虚拟组织的实体间的协同合作、共享资源的安全性和动态性问题,利用信任模型和信任评估控制机制对网格社区中的资源提供者和资源消费者实施安全保护以及对其提交任务的质量保证。

Trust evaluation in grid environment is a hot topic in currently grid research. In order to resolve the security problems due to the dynamics and uncertainty of grid environment, in this model we develop a new trust method, it can apply to the efficient grid and open network environment widely. From the aspect of history windows＇ recommendation trust, it resolves how to screen out resource entity which must accord with user＇s request, and introducing the conception of traversal depth of tree and traversal scope of tree, to solve the problems of cooperation, shared resource and dynamics between grid users and resource entity in autonomous domain. Using the trust model and trust evaluate control mechanism, which affords security protect and quality assurance up the resource provider and resource consumer.