Efficient identity-based RSA multisignatures |
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Authors: | Lein Jian |
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Affiliation: | aDepartment of Computer Science and Electrical Engineering, University of Missouri, Kansas City, MO 64110, United States;bDepartment of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48864, United States |
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Abstract: | A digital multisignature is a digital signature of a message generated by multiple signers with knowledge of multiple private keys. In this paper, an efficient RSA multisignature scheme based on Shamir's identity-based signature (IBS) scheme is proposed. To the best of our knowledge, this is the first efficient RSA-based multisignature scheme with both fixed length and the verification time. The proposed identity-based multisignature scheme is secure against forgerability under chosen-message attack. It is also secure against multi-signer collusion attack and adaptive chosen-ID attack. |
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Keywords: | Digital signature Identity-based signature Multisignature RSA Public-key cryptography |
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