计算机应用 ›› 2014, Vol. 34 ›› Issue (11): 3291-3294.DOI: 10.11772/j.issn.1001-9081.2014.11.3291

• 计算机安全 • 上一篇    下一篇

基于身份的强不可伪造代理重签名方案

冯婕1,蓝才会1,2,郏伯荣1   

  1. 1. 兰州城市学院 信息工程学院, 兰州 730070;
    2. 西北师范大学 计算机科学与工程学院,兰州 730070
  • 收稿日期:2014-05-16 修回日期:2014-07-02 出版日期:2014-11-01 发布日期:2014-12-01
  • 通讯作者: 冯婕
  • 作者简介:冯婕(1976-),女,甘肃定西人,讲师,硕士,主要研究方向:信息管理、信息系统;蓝才会(1977-),男,江西永丰人,副教授,博士,主要研究方向:代理重加密;郏伯荣(1973-),女,安徽蒙城人,副教授,主要研究方向:网络信息系统。
  • 基金资助:

    江苏高校优势学科建设工程项目;甘肃省科技计划项目;国家档案局科技计划项目;甘肃省自然科学基金资助项目;兰州市科技计划项目

ID-based proxy re-signature scheme with strong unforgeability

FENG Jie1,LAN Caihui1,2,XIE Borong1   

  1. 1. School of Information Science and Engineering, Lanzhou City University, Lanzhou Gansu 730070, China;
    2. College of Computer Science and Engineering, Northwest Normal University, Lanzhou Gansu 730070, China
  • Received:2014-05-16 Revised:2014-07-02 Online:2014-11-01 Published:2014-12-01
  • Contact: FENG Jie

摘要:

针对代理重签名方案的存在性不可伪造问题,利用目标抗碰撞杂凑函数和双线性映射,提出了一种基于身份的双向代理重签名方案。在计算Diffie-Hellman困难问题的假设下,证明了该方案在适应性选择消息攻击下是强不可伪造的。所提方案的系统参数和重签名的长度短,重签名的计算量小,解决了现有代理重签名方案中存在的密钥管理复杂和安全性低等问题。

Abstract:

Concerning the problem that ID-based proxy re-signature schemes are existentially unforgeable, an ID-based bidirectional proxy re-signature scheme was proposed by using target collision-resistant Hash function and bilinear pairing. Under computational Diffie-Hellman assumption, the proposed proxy re-signature scheme is provably secure against strongly forgery under adaptive chosen message attacks. Moreover, the proposed scheme has short system parameters, short re-signature, low re-signing computation cost and high security. The proposed scheme solves the existing proxy re-signature in the presence of low security and complex key management.

中图分类号: