Analysis and Improvement of Certificateless signature and Proxy re-signature schemes

摘要：

　　Certificateless cryptography avoids the key escrow problem in identity-based crytosystems and certificate management in traditional public-key crytosystems,it has been researched by many scholars and many certificateless signature schemes have been proposed.However,most of them exist some security drawbacks and are insecure for some kinds of attacks.In this paper,we analyze two certificateless signature schemes and one proxy re-signature scheme proposed by some scholars recently.And we show that these schemes are insecure and also present the detailed attack steps.In order to overcome this problem,we also address some improved schemes which have the same or better performance than the original schemes.

关键词： information security certificateless signature aggregate signature proxy re-signature security analysis

作者: Xiaoming Hu Yan Liu Huajie Xu Jian Wang Xiaojun Zhang

作者单位: College of Computer and Information Engineering, Shanghai Second Polytechnic University, Shanghai 20 School of Computer and Electronic Information, Guangxi University, Nanning 530004, China E & A College, Hebei Normal University of Science & Technology, Hebei 066004, China

会议类型: 国际会议

会议名称: 2015 IEEE Advanced Information Technology, Electronic and Automation Control Conference(IAEAC 2015)(2015 IEEE先进信息技术,电子与自动化控制国际会议)

会议地点: 重庆

会议语种:英文

页码: 166-170

在线出版日期: 2015-12-19（万方平台首次上网日期，不代表论文的发表时间）