随着互联网的快速普及,网络中传输的信息流越来越多样,在网络中出现的数字化商品也日益丰富。数字化商品在现代电子交易中占据越来越重的比例,在线数字化商品交易支付的安全性是考虑的关键问题。在对安全电子交易(SET)协议进行简单介绍的基础上,指出了在进行网上数字化商品交易时SET协议的安全性方面的不足,提出了一个新的基于SET协议的改进方案,并对该方案作了详细分析。 With the rapid popularization of the Internet, the flow of information transmitted in the network is becoming more and more diversified, and digital products appearing in the network are increasingly enriched. Digital goods occupy an ever-increasing proportion of modern electronic transactions. The security of online digital merchandise payment is the key issue to be considered. On the basis of a brief introduction of Secure Electronic Transaction (SET) protocol, this paper points out the shortcomings of SET protocol in the online digital merchandise transaction, and proposes a new improved scheme based on SET protocol. Made a detailed analysis.