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Semantically-Secure Functional Encryption: Possibility Results, Impossibility Results and the Quest for a General Definition

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Cryptology and Network Security (CANS 2013)

Part of the book series: Lecture Notes in Computer Science ((LNSC,volume 8257))

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Abstract

This paper explains that SS1-secure functional encryption (FE) as defined by Boneh, Sahai and Waters implicitly incorporates security under key-revealing selective opening attacks (SOA-K). This connection helps intuitively explain their impossibility results and also allows us to prove stronger ones. To fill this gap and move us closer to the (laudable) goal of a general and achievable notion of FE security, we seek and provide two “sans SOA-K” definitions of FE security that we call SS2 and SS3. We prove various possibility results about these definitions. We view our work as a first step towards the challenging goal of a general, meaningful and achievable notion of FE security.

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Author information

Authors and Affiliations

  1. Department of Computer Science & Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California, 92093, USA

    Mihir Bellare

  2. Department of Computer Science, Georgetown University, 3700 Reservoir Road NW, Washington, DC, 20057, USA

    Adam O’Neill

Authors
  1. Mihir Bellare
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  2. Adam O’Neill
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Editor information

Editors and Affiliations

  1. École Normale Supérieure and CNRS,, 45 rue d’Ulm, 75005, Paris, France

    Michel Abdalla

  2. Department of Computer Science, Purdue University, LWSN 2142J, 305 N. University Street,, 47907, West Lafayette, IN, USA

    Cristina Nita-Rotaru

  3. Institute of Computing, University of Campinas, Avenida Albert Einstein 1251, 13083-852, Campinas, SP, Brazil

    Ricardo Dahab

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Bellare, M., O’Neill, A. (2013). Semantically-Secure Functional Encryption: Possibility Results, Impossibility Results and the Quest for a General Definition. In: Abdalla, M., Nita-Rotaru, C., Dahab, R. (eds) Cryptology and Network Security. CANS 2013. Lecture Notes in Computer Science, vol 8257. Springer, Cham. https://doi.org/10.1007/978-3-319-02937-5_12

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  • DOI: https://doi.org/10.1007/978-3-319-02937-5_12

  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-02936-8

  • Online ISBN: 978-3-319-02937-5

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