Cryptanalysis and improvement of a certificateless signature scheme in the standard model

被引:0
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作者
Hu, Guo-Zheng [1 ]
Han, Lan-Sheng [2 ]
Wang, Zhan-Qing [1 ]
机构
[1] School of Science, Wuhan University of Technology, Wuhan 430070, China
[2] School of Computer, Huazhong University of Science and Technology, Wuhan 430074, China
关键词
Electronic document identification systems - Network security - Public key cryptography;
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学科分类号
摘要
The first certificateless signature scheme provably secure in the standard model and an improved scheme were analyzed. A new malicious KGC attack called universal malicious KGC attack was given. In this attack, malicious KGC could generate the trapdoor system parameters of the schemes in set-up phase and forge signatures of any user for any message in the signing phase. An improved scheme was presented to defense this attack.
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页码:54 / 58
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