摘要： 公平交换协议是安全电子商务的基石，RSA密码体制在电子商务领域中得到了广泛的应用，设计基于RSA密码体制的公平交换协议具有重要的实践意义。文章提出了一种新的基于整数扩环的高效可验证的加密的RSA签名方案，基于该方案设计了一种高效、安全、简单、实用、快速的交换RSA签名的优化公平交换协议，对其安全性和效率进行了分析和比较。

关键词: 公平交换协议, RSA密码体制, 可验证的加密的签名, 信息安全

Abstract: Fair exchange protocol is the basis of secure electronic commerce where the RSA cryptosystem gains comprehensive applications. This paper presents a new efficient verifiable encrypted RSA signature scheme, on which a simple and practical optimistic fair exchange protocol is been devised. Analysis and comparisons show that this protocol is secure and fast.

Key words: fair exchange protocol, RSA cryptosystem, verifiably encrypted signature, information security

中图分类号: 

• TP309.7