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Efficient Short Signcryption Scheme with Public Verifiability

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Information Security and Cryptology (Inscrypt 2006)

Part of the book series: Lecture Notes in Computer Science ((LNSC,volume 4318))

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Abstract

Signcryption is such a public key cryptographic primitive that simultaneously provides the functionality of signature and encryption within a single logic step. Despite the flurry of recent results on signcryption, there are no signcryption schemes which possess both tight security and short expansion. This paper presented a short signcryption scheme to achieve both above merits. Thanks to q-strong Diffie-Hellman problem and parings, our scheme is quite efficient and security: the signcryption operation has almost the same cost as an El Gamal encryption while the reverse operation only requires one pairing evaluation and two exponentiations, the ciphertext expansion is about 260 bits which is much smaller than that of all previously proposed schemes, and the security of our scheme is tightly related to q-Strong Diffie-Hellman problem in the random oracle model.

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Author information

Authors and Affiliations

  1. School of Computer, South China Normal University, Guangzhou, 510631, China

    Changshe Ma

Authors
  1. Changshe Ma
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Editor information

Editors and Affiliations

  1. University College London, UK

    Helger Lipmaa

  2. Computer Science Department, Google Inc. and Columbia University, 1214 Amsterdam Avenue, 10027, New York, NY, USA

    Moti Yung

  3. SKLOIS Lab, Institute of Software, Chinese Academy of Sciences, 100080, Beijing, P.R. China

    Dongdai Lin

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© 2006 Springer-Verlag Berlin Heidelberg

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Ma, C. (2006). Efficient Short Signcryption Scheme with Public Verifiability. In: Lipmaa, H., Yung, M., Lin, D. (eds) Information Security and Cryptology. Inscrypt 2006. Lecture Notes in Computer Science, vol 4318. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11937807_10

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  • DOI: https://doi.org/10.1007/11937807_10

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-49608-3

  • Online ISBN: 978-3-540-49610-6

  • eBook Packages: Computer ScienceComputer Science (R0)

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