计算机工程 ›› 2009, Vol. 35 ›› Issue (4): 152-153.doi: 10.3969/j.issn.1000-3428.2009.04.053

• 安全技术 • 上一篇    下一篇

一个基于身份的可证明安全代理签名方案

王天芹   

  1. (河南大学数据与知识工程研究所,开封 475001)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-02-20 发布日期:2009-02-20

Provably Secure Identity-based Proxy Signature Scheme

WANG Tian-qin   

  1. (Institute of Data and Knowledge Engineering, Henan University, Kaifeng 475001)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-02-20 Published:2009-02-20

摘要: 针对实际应用中的代理签名问题,提出一个基于身份的代理签名方案,包括系统初始化、注册、签名、验证及追踪5个算法。应用可证明安全性的理论和方法,证明在CDH问题难解及子集判定问题难解的假设下,该方案具有代理者的匿名性与身份的可追查性。

关键词: 双线性对, 代理签名, 可证明安全性

Abstract: This paper presents an identity-based proxy signature scheme to solve the proxy signature problem, which includes such five algorithms: setup, enroll, sign, verify and Trace. With the theory and approach of provable security, it proves that under the Computational Diffie-Hellman(CDH) and the subgroup decision assumptions, the scheme has the properties of anonymity and traceability.

Key words: bilinear pairings, proxy signature, provable security

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