具有隐私保护的安全电子交易协议

电子交易的普及在给用户带来便利的同时，其在交易支付中所暴露出的隐私保护和安全性问题也受到不同程度的挑战。针对此问题，提出一个安全的电子交易协议。协议中，优化后的签密算法可保证交易的安全性；同时支付服务商具有去匿名性功能，可以在保护用户隐私的基础上进行追责。经性能分析，本协议在提高通信性能的基础上，满足消息的机密性和不可否认性、购买者的匿名性和可追踪性以及电子交易的公平性。

A secure electronic transaction protocol with privacy protection

While the popularization of electronic transactions brings convenience to users, privacy protection and security problems exposed in transaction payment are also facing challenges to varying degrees. Aiming at this problem, we propose a secure electronic transaction protocol. The optimized signcryption algorithm in the protocol can secure safe electronic transaction. Meanwhile, payment service providers have the function of de anonymity, which can claim responsibility on the premise of protecting user privacy. Performance analysis show that the proposed protocol can improve communication performance, meet the need of confidentiality and non repudiation of information, and guarantee the anonymity and traceability of buyers and fairness of electronic transactions.