摘要
分析了刘晓红和张建中提出的一个无证书代理签名方案,发现其不能抵抗恶意KGC攻击、原始签名人A(代理签名人B)和KGC的合谋攻击。针对这些安全问题,提出了一种改进方案,分析表明:改进方案能克服以上的安全性问题。
This paper analyzes the security of the certificateless proxy signature scheme that Liu Xiaohong and Zhang Jianzhong proposed.The analysis shows that Liu and Zhang’s scheme cannot resist the attack of malicious KGC and the collusion attack among the original signer,the proxy signer and KGC.To get over these security problems,an improved scheme is proposed.The security analysis shows that the improved scheme can overcome the above mentioned problems.
作者
葛丽霞
李虓
何明星
李亚荣
刘晓剑
GE Lixia;LI Xiao;HE Mingxing;LI Yarong;LIU Xiaojian(School of Science, Xihua University, Chengdu 610039, China;School of Computer and Software Engineering, Xihua University, Chengdu 610039, China)
出处
《计算机工程与应用》
CSCD
北大核心
2017年第8期92-94,158,共4页
Computer Engineering and Applications
基金
国家自然科学基金(No.U1433130)
西华大学重点实验室开放研究基金项目(No.S2jj2012-029)
西华大学"西华杯"大学生科技创新登峰计划项目(No.2015077)
关键词
代理签名
无证书签名
合谋攻击
双线性对
proxy signature
certificateless signature
collusion attack
bilinear pairing
