TCG下可信度量机制与模型分析

Overview of trustworthiness measurement mechanism and model in TCG

摘要:

针对可信计算中可信度量的研究现状和所面临的问题,对依据可信需求如何表征对象的可信性问题进行了深入研究．分析了可信度量有关的基本概念、主要任务和预期目标;剖析了基本度量模型体系结构,给出了完整的度量过程及其形式化描述;综合考虑各种度量因子,依据度量对象、度量代理与实现策略的差异,选取典型模型进行评述．在此基础上,对可信度量模型进行了归类比较总结．研究分析表明在可信度量中引入信息流策略、访问控制,建立有效的度量模型,并注重实体行为的度量是可信度量后续研究的关键．

Abstract:

As one of the main bottle necks in Trusted Computing going forward, the technical core of trustworthiness measurement is how to characterize object trustworthiness in accordance with requirement of the trust. This paper states the current state of research and the confronted problems. Firstly, the basic concepts, main tasks and expected objectives of measurement are summarized and presented. Secondly, the framework of measurement, complete measurement process and formal description are described. With considering all factors, in the light of the difference of objects, measurement agents and implementation, some representative model of measurement are discussed. And on that basis, the latest models are classified and summarized respectively, and the directions for continuing research are discussed.