Security analysis and improvements of certificateless aggregate signature schemes

被引：0

作者：

Zhang, Yu-Lei ^{[1
]}

Li, Chen-Yi ^{[1
]}

Wang, Cai-Fen ^{[1
]}

Zhang, Yong-Jie ^{[2
]}

机构：

[1] College of Computer Science and Engineering, Northwest Normal University, Lanzhou

[2] Gansu Health Vocational College, Lanzhou

来源：

Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology | 2015年 / 37卷 / 08期

关键词：

Aggregate signature; Certificateless signature; Chosen message attack; Computational Diffie-Hellman Hard problem (CDH); Cryptography; Key Generation Center (KGC) attack;

D O I：

10.11999/JEIT141635

中图分类号：

学科分类号：

摘要：

The security of certificateless signature scheme which was proposed by He et al. (2014) is analyzed, and the security of the certificateless aggregate signature scheme which was proposed by Ming et al. (2014) is analyzed too. It is pointed out that the Key Generation Center (KGC) can realize the passive attacks in the Ming's scheme. It is also pointed out that KGC can realize the passive attack and initiative attack respectively in the Nimg's scheme. The processes of concrete forgery attacks which perfored by KGC are shown, and the possible reasons are analyzed. Finally, two improved Ming's schemes are proposed. The improved schemes not only overcome the security problem of original scheme but also have an advantage that the length of aggregated signature is fixed. ©, 2015, Science Press. All right reserved.

引用

页码：1994 / 1999

页数：5

共 14 条

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