计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (30): 90-93.

• 网络、通信、安全 • 上一篇    下一篇

一种公平的无证书电子现金方案

郭 琳   

  1. 四川职业技术学院 计算机科学系,四川 遂宁 629000
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-10-21 发布日期:2011-10-21

Fair and certificateless-based E-cash scheme

GUO Lin   

  1. Department of Computer Science,Sichuan Vocational and Technical College,Suining,Sichuan 629000,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-10-21 Published:2011-10-21

摘要: 在跨域和跨组织的电子商务应用中,基于公钥基础设施的密码技术存在沉重的公钥证书管理负担,而基于身份的密码技术存在密钥托管问题,这些都制约了电子现金方案的进一步发展。而基于无证书的密码技术可以避免这些问题。提出了一种基于无证书的签名和认证密钥交换机制,分析了该机制的安全性。基于新的无证书签名和认证密钥交换机制,提出了一种新的电子现金方案。该方案满足电子现金的不可伪造性和不可重用性、用户匿名性以及电子商务交易的公平性。

关键词: 无证书认证, 电子现金, 公平性, 双线性对

Abstract: In the E-commerce application of cross-domain and cross-organization scenarios,there are heavy certificate management burden in PKI-based cryptography and so-called key escrow problem in ID-based cryptography,which limits the development of E-cash.Recently,certificateless cryptography has been adopted to deal with those problems.In this paper,a certificateless signature and authenticated key exchange scheme is proposed,and its security is analyzed.An E-cash scheme based on the new certificateless signature and authenticated key exchange is then proposed,which achieves unforgeability and unreusability of e-cash,customer anonymity,and fair exchange on e-commerce transactions.

Key words: certificateless authentication, electronic cash, fairness, bilinear pairings