一个基于普适计算的动态协同的信任模型

Dynamic Collaborative Trust Model Based on Pervasive Computing

普适计算环境是一个具有高度动态性的分布式环境,进行信息交互的实体之间存在着自发性和不可预知性。因此,普适计算比传统计算更强调信任的作用,对系统安全也提出了更高的要求。综合了影响信任决策的多个凭证因素,并结合信息安全风险评估,提出一个由信任-信誉模块和风险模块组成的动态协同模型。该模型克服了对影响信任决策的凭证考虑不完整的问题,有利于在实体间建立可靠的信任关系,提高普适环境和信息的安全性。

Pervasive computing environment is a highly dynamic distributed environment in which principals collaborate spontaneously and unpredictably.Therefore,the pervasive computing puts more emphasis on the role of trust and puts forward higher request to system security than traditional calculation.A new dynamic collaborative trust model composed trust-reputation module and risk module was proposed based on combining credence elements and information safety risk assessment.This model resolve the limitations in the integrality of evidence used for the trust judgment,and in favor of setting up the reliable trust relationship in the entities,and improving environment and information security of universal.