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A Short Verifier-Local Revocation Group Signature Scheme with Backward Unlinkability

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Advances in Information and Computer Security (IWSEC 2006)

Part of the book series: Lecture Notes in Computer Science ((LNSC,volume 4266))

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Abstract

Previously Verifier-Local Revocation (VLR) group signature schemes from bilinear maps were proposed. In VLR schemes, only verifiers are involved in the revocation of a member, while signers are not involved in the revocation. Thus, the schemes are suitable for mobile environments. Furthermore, the previously proposed schemes satisfy an important property, the backward unlinkability. It means that even after a member is revoked, signatures produced by the member before the revocation remain anonymous. This property is needed in case a member leaves voluntarily or in case of a stolen key. In this paper an improved scheme is proposed, where the group signatures are shorter. This is achieved using a different assumption, DLDH assumption, and improving zero-knowledge proofs in the group signatures. The length of the proposed group signatures is about 53% of that of the previous ones.

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Authors and Affiliations

  1. Dept. of Communication Network Engineering, Okayama University, Japan

    Toru Nakanishi & Nobuo Funabiki

Authors
  1. Toru Nakanishi
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  2. Nobuo Funabiki
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Editor information

Editors and Affiliations

  1. Faculty of Electro-Communication, The University of Electro-Communications, 1-5-1, Chofugaoka, P.O. Box, 182-8585, Chofu, Japan

    Hiroshi Yoshiura

  2. Department of Computer Science, Communication Engineering, Kyushu University, 812-0053, Fukuoka, Japan

    Kouichi Sakurai

  3. Institute of Business Informatics, Goethe University Frankfurt, Frankfurt/Main, Germany

    Kai Rannenberg

  4. Faculty of Software and Information Science, Iwate Prefectural University, 152-52 Sugo, Takizawa, Takizawa-mura, 020-0193, Iwate, Japan

    Yuko Murayama

  5. Toshiba Corporation, 1, Komukai Toshiba-cho, Saiwai-ku, P.O. Box, 212-8582, Kawasaki, Japan

    Shinichi Kawamura

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Nakanishi, T., Funabiki, N. (2006). A Short Verifier-Local Revocation Group Signature Scheme with Backward Unlinkability. In: Yoshiura, H., Sakurai, K., Rannenberg, K., Murayama, Y., Kawamura, S. (eds) Advances in Information and Computer Security. IWSEC 2006. Lecture Notes in Computer Science, vol 4266. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11908739_2

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  • DOI: https://doi.org/10.1007/11908739_2

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-47699-3

  • Online ISBN: 978-3-540-47700-6

  • eBook Packages: Computer ScienceComputer Science (R0)

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