【摘要】 随着公钥基础设施 (publickeyinfrastructure ,PKI)的出现 ,使得越来越多的电子商务方面的应用可以架构其上。提出一种适于网上电子合同签署的PKI模型。首先介绍了方案中用到的密码学相关知识 ;然后提出模型(包括单CA模型的扩展模型 )并对模型的正确性给出了相应的证明 ;最后 ,比较两个模型 ,对模型的特点作了进一步的说明。此外 ,为了清楚起见 ,还进一步给出了模型的实施方案简图。更多还原

【Abstract】 With the emergence of the PKI,more and more applications in the electronic commerce are designed on it. This paper presents a PKI model for the scheme of contract signing on the net. The knowledge about the cryptology is introduced firstly,then the two models (single CA model and improved model) are put forward and their correctness is verified.In the end the characteristics of the two models are respectively discussed. What’s more, a simple implementing chart is given for an easy unerstanding.更多还原