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Improvement of Laih and Yen’s multisignature scheme
Pages: 149-153
Year: Issue:  9
Journal: Journal of Zhejiang University Science B

Keyword:  Digital signatureMultisignatureCryptography;
Abstract: <正> 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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