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Constructing Secure Proxy Cryptosystem

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Information Security and Cryptology (CISC 2005)

Part of the book series: Lecture Notes in Computer Science ((LNSC,volume 3822))

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Abstract

Proxy cryptosystem was first proposed by Mambo and Okamoto, for the delegation of the power to decrypt ciphertexts. However, to our knowledge, there is no reasonable mode aimed at this cryptographic notion. In this paper, we first present a practical mode: proxy cryptosystem based on time segmentation. Under this mode, a secure model is proposed and a proxy cryptosystem is constructed. Our construction uses ideas from the HIBE scheme of Gentry and Silverberg, the FSPE scheme of Canetti et al. and the scheme of Fujisaki and Okamoto, and is proven to be secure based on the hardness of bilinear Diffie-Hellman assumption. At last, we give an identity based (ID-based) version of the proxy cryptosystem based on time segmentation.

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Author information

Authors and Affiliations

  1. Department of Computer Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200030, P.R. China

    Yuan Zhou, Zhenfu Cao & Zhenchuan Chai

Authors
  1. Yuan Zhou
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  2. Zhenfu Cao
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  3. Zhenchuan Chai
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Editor information

Editors and Affiliations

  1. State Key Laboratory of Information Security, Institution of Software of Chinese Academy of Sciences, 100080, Beijing, China

    Dengguo Feng

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

    Dongdai Lin

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

    Moti Yung

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© 2005 Springer-Verlag Berlin Heidelberg

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Zhou, Y., Cao, Z., Chai, Z. (2005). Constructing Secure Proxy Cryptosystem. In: Feng, D., Lin, D., Yung, M. (eds) Information Security and Cryptology. CISC 2005. Lecture Notes in Computer Science, vol 3822. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11599548_13

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  • DOI: https://doi.org/10.1007/11599548_13

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-30855-3

  • Online ISBN: 978-3-540-32424-9

  • eBook Packages: Computer ScienceComputer Science (R0)

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