信息网络安全 ›› 2017, Vol. 17 ›› Issue (3): 53-58.doi: 10.3969/j.issn.1671-1122.2017.03.009

• • 上一篇    下一篇

基于双线性对的无证书群签名方案研究

陈亚萌1, 程相国2(), 王硕2, 高明2   

  1. 1.青岛大学数据科学与软件工程学院,山东青岛 266071
    2.青岛大学计算机科学技术学院,山东青岛 266071
  • 收稿日期:2016-11-16 出版日期:2017-03-20 发布日期:2020-05-12
  • 作者简介:

    作者简介:陈亚萌(1994—),女,山东,硕士研究生,主要研究方向为信息安全;程相国(1969—),男,山东,教授,博士,主要研究方向为信息安全;王硕(1992—),男,山东,硕士研究生,主要研究方向为信息安全;高明(1990—),男,山东,硕士研究生,主要研究方向为信息安全。

  • 基金资助:
    国家自然科学基金[61572267,61303197,61272425];山东省自然科学基金[ZR2013FQ005]

Research on Certificateless Group Signature Scheme Based on Bilinear Pairings

Yameng CHEN1, Xiangguo CHENG2(), Shuo WANG2, Ming GAO2   

  1. 1.College of Data Science and Software Engineering, Qingdao University, Qingdao Shandong 266071, China
    2. College of Computer Science and Technology, Qingdao University, Qingdao Shandong 266071, China
  • Received:2016-11-16 Online:2017-03-20 Published:2020-05-12

摘要:

无证书密码体制的提出不仅解决了传统公钥密码体制中存在的证书管理问题,也克服了基于身份的密码体制中密钥托管的问题。国内外研究者在无证书密码体制的基础上,提出了具有特殊性质的签名方案,如群签名、多签名、环签名、盲签名等。群签名方案允许群内成员代表群组进行匿名签名,并满足匿名性、不可伪造性、可跟踪性等安全性要求。文章引入双线性对的概念,以及基于双线性对的DH、CDH和DDH困难性问题,结合门限签名和多签名在签名中的优势,在无证书公钥密码体制和群签名的基础上,提出了一个基于双线性对的无证书群签名方案。该方案具有无证书密码体制的优点,满足群签名的安全性要求,且可以方便地实现群成员的加入和撤销,对群成员的跟踪也更加简单。与现有的无证书群签名方案相比,文章方案所需的双线性对运算次数更少,计算效率更高。

关键词: 无证书, 群签名, 双线性对, 匿名性

Abstract:

Certificateless cryptography not only solves the certificate management problem in the traditional public key cryptography, but also overcomes the key escrow problem in identity-based cryptography. On the basis of the certificateless cryptography, domestic and foreign researchers propose many signature schemes with special properties, such as group signature, multi-signatures, ring signature, blind signature and so on. A group signature scheme allows a group member to sign messages anonymously on behalf of the group, which meets the security requirements of anonymity, nonforgery, traceability, etc. On the basis of the certificateless public key cryptography and group signature, by introducing the concept of bilinear pairings and the DH,CDH and DDH difficult problems based on bilinear pairings, combining the advantages of the threshold signature and multi-signatures, this paper proposes a certificateless group signature scheme based on bilinear pairings. This scheme has the advantages of certificateless public key cryptography, meets the security requirements of group signature, and can easily achieve the accession and revocation of group members, which tracking group members is also more simple. Compared with the existing certificateless group signature schemes, this scheme need less bilinear pairings calculation number and the computational efficiency is higher.

Key words: certificateless, group signature, bilinear pairings, anonymity

中图分类号: