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计算机工程 ›› 2012, Vol. 38 ›› Issue (13): 117-118,127. doi: 10.3969/j.issn.1000-3428.2012.13.034

• 安全技术 • 上一篇    下一篇

新型可撤销代理权的代理签名方案

原变青1,张 忠2   

  1. (1. 山东广播电视大学计算机与通信学院,济南 250014;2. 山东大学计算机科学与技术学院,济南 250061)
  • 收稿日期:2011-10-27 出版日期:2012-07-05 发布日期:2012-07-05
  • 作者简介:原变青(1980-),女,讲师、硕士,主研方向:信息安全;张 忠,博士研究生

Novel Proxy Signature Scheme with Revocable Proxy Right

YUAN Bian-qing 1, ZHANG 2   

  1. (1. School of Computer & Communication, Shandong TV University, Jinan 250014, China; 2. School of Computer Science & Technology, Shandong University, Jinan 250061, China)
  • Received:2011-10-27 Online:2012-07-05 Published:2012-07-05

摘要: 针对代理授权撤销问题,提出一个新型可撤销代理权的代理签名方案。通过在轻量级目录访问协议服务器上维护一张授权列表和一张可信列表,并设置只有原始签名人拥有写权限,使签名过程无需一个实时在线的可信第三方。分析结果表明,该方案具有强不可伪造性、可验证性、强不可否认性、可区分性、强可识别性及防止滥用,与同类方案相比,签名和验证的计算量更小、交互次数更少。

关键词: 数字签名, 代理签名, 代理授权, 代理撤销, 强不可伪造性

Abstract: In order to solve the problem of proxy revocation, a novel efficient proxy signature scheme with revocable proxy right is proposed. By maintaining an authorized list and a trusted list in Lightweight Directory Access Protocol(LDAP) server and setting write access only to original signer, the novel scheme does not rely on the on-line trusted third part. Analysis shows that the new proposal fulfills all the security requirements of proxy signatures such as strong unforgeability, verifiability, strong undeniability, strong identifiability, distingulshability, prevention of misuse. Compared with the existing solutions, this scheme has less computation and fewer interactions in signature issuing and verification phase.

Key words: digital signature, proxy signature, proxy authorization, proxy revocation, strong unforgeability

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