提出了基于代理签名的安全电子支付协议及其安全性分析，从而使得用户可以找代理人为其在网上寻找和购买一些特殊的商品或服务。
A secure e-payment protocol based on proxy signature is proposed. From this protocol, customers can make proxy search and buy special products or services on behalf of them.
此系统采用SET协议作为电子支付的基本流程框架，保证系统具有高度的安全性；
This system adopted SET protocol as the basic flow frame of the payment system to ensure the system high security.
目前最流行的两个安全电子支付系协议是SSL和SET，它们在保障安全电子支付方面各有特点。
The most popular two secure E-payment protocols are SSL and SET, each has its strong points in ensuring safe E-payment.
安全电子交易协议SET通过制定标准和采用各种密码技术手段，确保了电子支付过程中的安全问题。
Secure Electronic Transaction protocol(SET) has guaranteed security problem in the electronic payment process through formulating standard and using cryptogram technology.
第三，详细介绍了两种电子支付安全协议（SSL协议和SET 协议）；
Third, dissertation explicates two electronic payment protocols (SSL protocol and SET protocol), which correlate EC;
第三，详细介绍了两种电子支付安全协议（SSL协议和SET 协议）；
Third, dissertation explicates two electronic payment protocols (SSL protocol and SET protocol), which correlate EC;
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