计算机工程与应用 ›› 2008, Vol. 44 ›› Issue (4): 138-140.

• 网络、通信与安全 • 上一篇    下一篇

基于身份无可信中心的指定验证人代理签名方案

左为平1,2,王彩芬2,樊 睿2,蓝才会2   

  1. 1.天水师范学院 数学与信息科学学院,甘肃 天水 741000
    2.西北师范大学 数学与信息科学学院,兰州 730070
  • 收稿日期:2007-06-04 修回日期:2007-08-10 出版日期:2008-02-01 发布日期:2008-02-01
  • 通讯作者: 左为平

ID-based designated-verifier proxy signature scheme without trusted PKG

ZUO Wei-ping1,2,WANG Cai-fen2,FAN Rui2,LAN Cai-hui2   

  1. 1.College of Mathematics and Information Science,Tianshui Normal College,Tianshui,Gansu 741000,China
    2.College of Mathematics and Information Science,Northwest Normal University,Lanzhou 730070,China
  • Received:2007-06-04 Revised:2007-08-10 Online:2008-02-01 Published:2008-02-01
  • Contact: ZUO Wei-ping

摘要: 由于已有的基于身份的指定验证人代理签名方案都是无条件信任私钥产生中心(Private Key Generator,PKG)的,而这些方案中所有用户的私钥都是由PKG计算产生的,因此不诚实的PKG就可以伪造任意用户的代理签名。为了解决无条件信任PKG带来的问题,保护原始签名人和代理签名人的利益,首次提出了一种基于身份无可信中心的指定验证人代理签名方案。分析表明,该方案是安全有效的。

关键词: 基于身份, 代理签名, 私钥产生中心, 指定验证人

Abstract: As existing ID-based designated-verifier proxy signatures need to trust a Private Key Generator(PKG) unconditionally.PKG can compute the private key of any user and forge a proxy signature of any one in scheme.In order to protect advantages of the original signer and the proxy signer,an ID-based designated-verifier proxy signature scheme without trusted PKG is proposed for the first time.The security analysis shows that ID-based designated-verifier proxy signature scheme without trusted PKG is secure and effective.

Key words: ID-based, proxy signature, Private Key Generator(PKG), designated-verifier