| Improvement of Laih and Yen's multisignature scheme |
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| 作者姓名： | 谢琪 于秀源 |
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| 作者单位： | Department of Mathematics，Zhejiang University，Hangzhou 310027，China School of Information and Engineering，Hangzhou Teachers College，Hangzhou 310012，China，Department of Mathematics，Zhejiang University，Hangzhou 310027，China Hangzhou Teachers College，Hangzhou 310012，China |
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| 基金项目： | Project (No. 10271037) supported by the National Natural Science Foundation of China |
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| 摘 要： | A new attack is proposed to show that a specified group of verifiers can cooperate to forge the signature for any message by secret key substitution due to the leaked secret key or by the group public key adjustment because of the renewed members. This paper presents the improvement scheme which overcomes the security weakness of Laih and Yen's scheme.
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Improvement of Laih and Yen's multisignature scheme |
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| XIE Qi,YU Xiu-yuan.Improvement of Laih and Yen's multisignature scheme[J].Journal of Zhejiang University Science,2004(9). |
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| Authors: | XIE Qi YU Xiu-yuan |
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| Abstract: | A new attack is proposed to show that a specified group of verifiers can cooperate to forge the signature for any message by secret key substitution due to the leaked secret key or by the group public key adjustment because of the renewed members. This paper presents the improvement scheme which overcomes the security weakness of Laih and Yen's scheme. |
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| Keywords: | Digital signature Multisignature Cryptography |
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