Cryptanalysis and Improvement of a Certificateless Signature Scheme with Strong Unforgeability

被引：0
|
作者：
Wu T. [1 ]
Jing X.-J. [1 ]
机构：
[1] School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing
来源：
| 2018年 / Chinese Institute of Electronics卷 / 46期
关键词：
Bilinear pairings; Certificateless signature; Collision resistant hash; Cryptanalysis; Diffie-Hellman assumptions;
D O I：
10.3969/j.issn.0372-2112.2018.03.013
中图分类号：
学科分类号：
摘要：
Certificateless cryptographic schemes are very useful secure protection tools in Wireless Network. Quite recently, a certificateless signature with strong unforgeability in the Standard Model is presented by Hung et al. in 2016. Although they demonstrated that their scheme is secure and unforgeable under the collision resistant hash and computational Diffie Hellman assumptions, but we find that it is not secure against Type II adversary. In this paper, we give security analysis to their scheme, and show that by giving concrete attack, a Type II adversary could forge a legal signature of any message. We also put forward a possible fix of certificateless scheme which can solve secure problem. © 2018, Chinese Institute of Electronics. All right reserved.
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页码：602 / 606
页数：4
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