计算机工程与应用 ›› 2013, Vol. 49 ›› Issue (20): 77-81.

• 网络、通信、安全 • 上一篇    下一篇

可证安全的基于身份的门限代理签名方案

黄梅娟,杜红珍   

  1. 宝鸡文理学院 数学系,陕西 宝鸡 721013
  • 出版日期:2013-10-15 发布日期:2013-10-30

Provable secure ID-based threshold proxy signature scheme

HUANG Meijuan, DU Hongzhen   

  1. Department of Mathematics, Baoji University of Arts and Science, Baoji, Shaanxi 721013, China
  • Online:2013-10-15 Published:2013-10-30

摘要: 在Paterson基于身份的签名方案基础上,提出一个在标准模型下可证安全的基于身份的门限代理签名方案。新方案具有在自适应选择消息攻击下存在不可伪造性,其安全性在标准模型下可归约为CDH问题假定,与基于公钥密码体制的门限代理签名方案相比,新方案的安全性更高。同时,相对随机预言模型下基于身份的门限签名方案,新方案更具有实际意义。

关键词: 门限代理签名, 基于身份密码体制, 标准模型, CDH问题

Abstract: Based on the Paterson’s identity-based signature scheme, this paper proposes a provable secure identity-based threshold proxy signature scheme. The scheme is existentially unforgeable against adaptive chosen message attacks under the computational Diffie-Hellman assumption in the standard model. Compared with other threshold proxy signature schemes based on public key cryptosystem, the new scheme is more secure. Compared with other identity-based threshold proxy signature schemes in the random oracle model, the new scheme is more meaningful.

Key words: threshold proxy signature, identity-based cryptography, standard model, Computation Diffie-Hellman(CDH) problem