摘要
针对现有门限代理签名方案存在不具有可追踪性和无法防止签名被代理者滥用的问题,提出一种可追踪的双重子秘密门限代理签名方案.该方案在依赖于双线性映射以及计算Diffie-Hellman问题的基础上,通过引入盲因子和代理子秘密双重子秘密分量,对代理签名的发起者进行限制和追踪,使得签名具有强不可伪造性、强不可否认性、前向安全性、抗合谋性、防滥用与可追踪性等安全性质.文中利用范德蒙变换等数学工具,对方案的正确性、效率和安全性进行了详细的讨论和证明,分析表明该方案是一种安全有效的门限代理签名方案.
In the light of the problems that the existing threshold proxy signature schemes do not have traceability and cannot prevent the proxy from abusing signature, a threshold proxy signature scheme based on double sub-secret is proposed in this paper. From the Computational Diffie-Hellman （ CDH ） problem and bilinear pairings, the scheme can restrict and track the initiator of the signature by introducing blind factor and proxy sub-secret. It can make the signature have the security nature of strong unforgeability, non-repudia- tion, traceability and resist collusion attack. Vandermonde transform and other mathematical tools are used to analyze correctness, ef- ficiency, and security of this signature scheme. The detailed analysis shows that this scheme is secure and effective.
出处
《小型微型计算机系统》
CSCD
北大核心
2014年第4期911-916,共6页
Journal of Chinese Computer Systems
基金
国家自然科学基金项目(61073037
61272151)资助
湖南省自然科学基金项目(13JJ6031)资助
关键词
门限代理签名
CDH问题
双线性映射
双重子秘密
范德蒙变换
threshold proxy signature
CDH problem
bilinear transformation
double sub-secret
Vandermonde transform
