一种改进的网格信任模型

An improved trustworthy network model

提出了针对网格计算环境改进的信任模型,给出信任计算模型的信任值更新函数,根据网格实体的交易行为特征适当增加或减少其信任值。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,能够评估实体与实体间的信任关系;在信任的计算中引入风险机制,防止协同作弊和诋毁的安全隐患。改进后的模型精化了信任算法的粒度,提高了信任评价的准确度。该可信度模型具有较好的可扩展性,可较好地解决网格环境中存在的某些安全问题。

This paper proposes an improved trustworthy model for network computing and gives the updating function with trust value.Based on the characteristics of the network,the model increases or reduces the trust value properly.And it gives the opening network system structure based on the trustworthy model.The model takes different ways to deal with trust relation in and between the regions,thus to evaluate the trust relation between the entities,and a definition of risk is presented.The improved model has the advantages of crisp granularity,high accuracy and high scalability.Therefore,the model can be used to effectively solve certain security problems in the network environment.