Attack on an Efficient Certificateless Aggregate Signature without Pairing

被引:1
作者
LI Huimin [1 ,2 ]
LIANG Hongmei [3 ]
WANG Haimin [1 ,2 ]
ZHANG Jinhui [1 ,2 ]
机构
[1] School of Mathematics and Finance, Putian University
[2] Key Laboratory of Applied Mathematics, Fujian Province University (Putian University)
[3] School of Mathematics and Statistics, Minnan Normal University
基金
中国国家自然科学基金;
关键词
certificateless; aggregate signature; attack; security; random oracle model; discrete logarithm problem;
D O I
10.19823/j.cnki.1007-1202.2020.0015
中图分类号
TN918.1 [理论];
学科分类号
070104 ;
摘要
A Certificateless Aggregate Signature(CLAS) scheme was proposed by Qu and Mu recently, which was published in "Int J. Electronic Security and Digital Forensics, 2018, 10(2)". They used discrete logarithm to ensure the scheme’s security. However,we show by formulating an attack that their CLAS scheme cannot defend against Type I adversary. Furthermore, we point out an error that exists in the signature simulation of their security proof.After that we give a correct signature simulation for the security proof. Finally, to resist the Type I attack, we present two methods for improving Qu et al’s CLAS scheme. Moreover, the second improving method can elevate the trust level of Qu et al’s CLAS scheme to the highest trust level: Level 3.
引用
收藏
页码:139 / 145
页数:7
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