信任链传递研究进展

Development of the transitive trusted chain research

通过信任链传递技术和理论方面的最新研究成果,分析了目前信任链传递研究现状与该领域中存在的问题。尽管TCG信任链传递模型能保证一定的可信性,但较长的信任链增加了传递过程的损失;信任度值采用迭代计算的方式获得,增大了计算量。基于此提出了一种星型结构的信任链传递模型。该模型将RTM置入TPM内部,从而有效的提高了信任链传递的安全性;其次,该模型在信任度量过程中增加了数据恢复功能,增强了数据传输过程中的可靠性;又由于RTM到所有被测量部件都是一级测量,因此传递过程的信任损失较少。最后指出了信任链传递领域亟待研究的理论与技术方向。

The paper presents the latest research results of the transitive trusted chain from theory and technology,and analyzes the level of the research on transitive trusted chain and some problems in the field at present.The transitive trusted chain model of TCG can guarantee the credibility in a certain extent,but the long trusted chain increases the damage of the transitive process.Furthermore,the trust value is gotten by iterative computation with large calculated amount.So a transitive trusted chain model of star structure is proposed based on transitive trusted chain.Firstly,the model puts RTM into TPM,which can effectively improve the safety of the trusted chain.Secondly,it can strengthen the reliability through increasing the data recovery function.Thirdly,the measurements from RTM to other components are direct measurement,which reduce the trusted loss of the transitive.Finally,some new fields of transitive trusted chain are pointed out from theory and technology.