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Identity-Based Multi-signatures from RSA

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Topics in Cryptology – CT-RSA 2007 (CT-RSA 2007)

Part of the book series: Lecture Notes in Computer Science ((LNSC,volume 4377))

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Abstract

Multi-signatures allow multiple signers to jointly authenticate a message using a single compact signature. Many applications however require the public keys of the signers to be sent along with the signature, partly defeating the effect of the compact signature. Since identity strings are likely to be much shorter than randomly generated public keys, the identity-based paradigm is particularly appealing for the case of multi-signatures. In this paper, we present and prove secure an identity-based multi-signature (IBMS) scheme based on RSA, which in particular does not rely on (the rather new and untested) assumptions related to bilinear maps. We define an appropriate security notion for interactive IBMS schemes and prove the security of our scheme under the one-wayness of RSA in the random oracle model.

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Author information

Authors and Affiliations

  1. Department of Computer Science & Engineering, University of California San Diego,  

    Mihir Bellare

  2. Department of Electrical Engineering, Katholieke Universiteit Leuven and Département d’Informatique Ecole Normale Supérieure,  

    Gregory Neven

Authors
  1. Mihir Bellare
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  2. Gregory Neven
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Editor information

Editors and Affiliations

  1. Information Sharing Platform Laboratories, NTT Corporation, Japan

    Masayuki Abe

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Bellare, M., Neven, G. (2006). Identity-Based Multi-signatures from RSA. In: Abe, M. (eds) Topics in Cryptology – CT-RSA 2007. CT-RSA 2007. Lecture Notes in Computer Science, vol 4377. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11967668_10

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  • DOI: https://doi.org/10.1007/11967668_10

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-69327-7

  • Online ISBN: 978-3-540-69328-4

  • eBook Packages: Computer ScienceComputer Science (R0)

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