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Identity-Based Parallel Key-Insulated Encryption Without Random Oracles: Security Notions and Construction

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Book cover Progress in Cryptology - INDOCRYPT 2006 (INDOCRYPT 2006)

Part of the book series: Lecture Notes in Computer Science ((LNSC,volume 4329))

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Abstract

In this paper, we apply the parallel key-insulation mechanism to identity-based encryption (IBE) scenarios, and minimize the damage caused by key-exposure in IBE systems. We first formalize the definition and security notions for ID-based parallel key-insulated encryption (IBPKIE) systems, and then propose an IBPKIE scheme based on Water’s IBE scheme. To the best of our knowledge, this is the first IBPKIE scheme up to now. Our scheme enjoys two attractive features: (i) it is provably secure without random oracles; (ii) it not only allows frequent key updating, but also does not increase the risk of helper key-exposure.

Supported by the National Science Foundation of China under Grant Nos.60303026, 60403007, 60573030 and 60673077.

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Author information

Authors and Affiliations

  1. Dept. of Computer Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China

    Jian Weng, Shengli Liu & Kefei Chen

  2. Key Laboratory of CNIS, Xidian University, Xian, 710071, P.R. China

    Shengli Liu

  3. School of Computer, South China Normal University Shipai, Guangzhou, 510631, P.R. China

    Changshe Ma

Authors
  1. Jian Weng
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  2. Shengli Liu
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  3. Kefei Chen
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  4. Changshe Ma
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Editor information

Editors and Affiliations

  1. Indian Statistical Institute, 205, B.T. Road, Kolkata, India

    Rana Barua

  2. Department of Mathematics and Computer Science, Technische Universiteit Eindhoven, P.O. Box 513, 5600, Eindhoven, MB, Netherlands

    Tanja Lange

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Weng, J., Liu, S., Chen, K., Ma, C. (2006). Identity-Based Parallel Key-Insulated Encryption Without Random Oracles: Security Notions and Construction. In: Barua, R., Lange, T. (eds) Progress in Cryptology - INDOCRYPT 2006. INDOCRYPT 2006. Lecture Notes in Computer Science, vol 4329. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11941378_29

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  • DOI: https://doi.org/10.1007/11941378_29

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-49767-7

  • Online ISBN: 978-3-540-49769-1

  • eBook Packages: Computer ScienceComputer Science (R0)

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