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计算机工程 ›› 2010, Vol. 36 ›› Issue (2): 156-157. doi: 10.3969/j.issn.1000-3428.2010.02.055

• 安全技术 • 上一篇    下一篇

一种无证书的前向安全代理签名方案

陈海滨1,杨晓元1,2,梁中银1,吴旭光1   

  1. (1. 武警工程学院网络与信息安全武警部队重点实验室,西安 710086;2. 西安电子科技大学计算机网络与信息安全教育部重点实验室,西安 710071)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-01-20 发布日期:2010-01-20

Forward Secure Certificateless Proxy Signature Scheme

CHEN Hai-bin1, YANG Xiao-yuan1,2, LIANG Zhong-yin1, WU Xu-guang1   

  1. (1. Key Laboratory of Network & Information Security of APF, Engineering College of APF, Xi’an 710086;2. Key Laboratory of Computer Network & Information Security of the Ministry of Education, Xidian University, Xi’an 710071)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-01-20 Published:2010-01-20

摘要: 结合前向安全性提出一个基于无证书公钥密码体制的代理签名方案。引入密钥更新算法,保证了代理签名方案的前向安全性。当代理签名者的代理密钥泄漏后,攻击者不能伪造当前时段以前的代理签名,从而减小了密钥泄漏所带来的损失。分析结果表明,新方案可避免基于证书密码系统的证书管理问题和基于身份的密钥托管问题。

关键词: 无证书公钥密码体制, 代理签名, 前向安全

Abstract: Forward secure characteristic is effective on dealing with the key exposure problem, a forward secure proxy signature scheme based on certificateless public key cryptography is proposed. This new scheme is forward secure by updating secret key frequently. When the proxy signature secret key is stolen, the attacker can not forge the former proxy signature, and it can reduce the loss, which caused by the key exposure to a great extent. Analysis result shows that the new scheme can overcome the problem of the certificate management in the certificate-based public key cryptosystem and the inherent key escrow problem in the identity-based public key cryptosystem.

Key words: certificateless public key cryptography, proxy signature, forward security

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