计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (16): 97-100.

• 网络、通信、安全 • 上一篇    下一篇

前向安全的盲代理重签名方案

邓宇乔   

  1. 广东商学院 数学与计算科学学院,广州 510320
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-06-01 发布日期:2011-06-01

Forward secure blind proxy re-signature scheme

DENG Yuqiao   

  1. College of Mathematics and Computer Science,Guangdong University of Business Studies,Guangzhou 510320,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-06-01 Published:2011-06-01

摘要: 提出了一个具有前向安全的盲代理重签名方案,并在随机预言机的模型下证明了该方案能抵抗伪造攻击的特性。该方案除了具有消息透明性外,还能保证即使当前周期的签名密钥被泄露,也并不影响此周期前签名的有效性。

关键词: 二次剩余, 盲签名, 代理重签名, 前向安全, 随机预言机模型

Abstract: A forward secure blind proxy re-signature scheme based on the difficulty assumption of quadratic residues is presented,which is bidirectional.The scheme is safe under the random oracle model.The scheme can maintain the former signature’s safety even if current cycle’s signature key is leaked,and the scheme can make the message transparent.

Key words: quadratic residues, blind signature, proxy re-signature, forward-secure, random oracle model