计算机应用 ›› 2013, Vol. 33 ›› Issue (12): 3519-3521.

• 信息安全 • 上一篇    下一篇

盲化的基于无证书的可验证加密签名方案

李艳红1,高德智1,2,冯文文1   

  1. 1. 山东科技大学 信息科学与工程学院,山东 青岛 266590
    2.
  • 收稿日期:2013-06-25 修回日期:2013-08-26 出版日期:2013-12-01 发布日期:2013-12-31
  • 通讯作者: 李艳红
  • 作者简介:李艳红(1988-),女,山东济宁人,硕士研究生,主要研究方向:密码学、信息安全;
    高德智(1963-),男,新疆昌吉人,教授,博士,主要研究方向:应用泛函分析、密码学;
    冯文文(1987-),女,山东聊城人,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

Blind verifiably encrypted signature scheme based on certificateless

LI Yanhong1,GAO Zhide1,2,FENG Wenwen1   

  1. 1. College of Information Science and Engineering, Shandong University of Science and Technology, Qingdao Shandong 266510, China
    2.
  • Received:2013-06-25 Revised:2013-08-26 Online:2013-12-31 Published:2013-12-01
  • Contact: LI Yanhong

摘要: 可验证加密签名方案的公平性完全由仲裁者中立问题决定,这样就降低了交换签名的安全性。为了应对这种情况,利用双线性对的性质,结合无证书公钥密码体制与可验证加密数字签名,设计了一种盲化的基于无证书的可验证加密签名方案,方案中的仲裁者不能直接恢复原始签名,从而加强了交换签名的安全性。在假设离散对数问题(DLP)和计算Diffie-Hellman问题(CDHP)难解的前提下,该方案在随机预言模型中是可证安全的。

关键词: 无证书公钥密码体制, 可验证加密签名, 仲裁者, 双线性对, 随机预言模型

Abstract: The fairness of verifiable encrypted signature scheme is completely determined by the arbitrators neutral problem, which reduces the security of signature exchange. In order to deal with this issue, using the properties of bilinear pairings and combining with certificateless public key cryptography and verifiable encrypted signature, a blind verifiable encrypted signature was designed without certificate. The adjudicator in this scheme cannot restore the original signature directly, thereby the security of exchange signature protocols was enhanced. The proposed scheme was also provably secure in the random oracle module under Discrete Logarithm Problem (DLP) and Computational Differ-Hellman Problem (CDHP) assumption.

Key words: certificateless public key cryptography, verifiably encrypted signature, adjudicator, bilinear pairing, random oracle model

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