计算机应用 ›› 2013, Vol. 33 ›› Issue (05): 1386-1390.DOI: 10.3724/SP.J.1087.2013.01386

• 信息安全 • 上一篇    下一篇

用基于身份的环签密构造的并发签名方案

刘奎,梁向前,李晓琳   

  1. 山东科技大学 信息科学与工程学院,山东 青岛 266590
  • 收稿日期:2012-11-02 修回日期:2012-12-13 出版日期:2013-05-01 发布日期:2013-05-08
  • 通讯作者: 梁向前
  • 作者简介:刘奎(1987-),男,山东滨州人,硕士研究生,主要研究方向:密码学、信息安全; 梁向前(1969-),男,山东青岛人,副教授,主要研究方向:密码学、信息安全;李晓琳(1987-),女,山东滕州人,硕士研究生,主要研究方向:密码学、信息安全。
  • 基金资助:

    青岛市科技发展计划项目(11-2-4-6-(1)-jch)

Concurrent signature scheme constructed by identity-based ring signcryption

LIU Kui,LIANG Xiangqian,LI Xiaolin   

  1. College of Information Science and Engineering, Shandong University of Science and Technology, Qingdao Shandong 266590, China
  • Received:2012-11-02 Revised:2012-12-13 Online:2013-05-08 Published:2013-05-01
  • Contact: LIANG Xiangqian

摘要: 基于身份的环签密算法兼具基于身份的密码体制与签密技术高效性的优点,同时具备环签名的模糊性。针对罗铭等提出的基于签密的公平交换协议(罗铭,邹春华,胡军,等. 基于签密的公平交易协议. 通信学报,2010,31(8A):146-150)中公平性水平与算法效率不高的问题,新方案引入了一个更加高效的基于身份的环签密算法,并将绑定签名身份与解密密文分开处理,构造了一种新的并发签名方案,并基于该方案构造了一个公平交换协议。分析表明,该方案克服了原方案公平性的不足,并在算法效率上有所提高,能很好地应用在电子支付、合同签署等电子商务活动中。

关键词: 基于身份, 环签密, 并发签名, 公平交易协议, 公平性

Abstract: The identity-based ring signcryptions have both high efficiency of identity-based cryptosystem and signcryption technology and the ambiguity of ring signature. In the fair exchange protocol based on signcryption proposed by Luo, et al (Luo M, Zou C H, Hu J, 〖WTBX〗et al.〖WTBZ〗Signcryption-based fair exchange protocol. Journal of Communications, 2010, 31(8A): 146-150), the fairness and efficiency are not good enough. The new scheme introduced a more efficient identity-based ring signcryption and dealt with the decryption and the signature-and-identity binding separately. A new fair exchange protocol was proposed based on this new scheme. The analysis shows that this scheme overcomes the fairness defect of the original scheme and has a better efficiency, which makes it a good application in electronic payment and contract signing.

Key words: identity-based, ring signcryption, concurrent signature, fair exchange protocol, fairness

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