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International Conference on Security and Cryptography for Networks

SCN 2008: Security and Cryptography for Networks pp 126–143Cite as

General Certificateless Encryption and Timed-Release Encryption

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Part of the book series: Lecture Notes in Computer Science ((LNSC,volume 5229))

Abstract

While recent timed-release encryption (TRE) schemes are implicitly supported by a certificateless encryption (CLE) mechanism, the security models of CLE and TRE differ and there is no generic transformation from a CLE to a TRE. This paper gives a generalized model for CLE that fulfills the requirements of TRE. This model is secure against adversaries with adaptive trapdoor extraction capabilities, decryption capabilities for arbitrary public keys, and partial decryption capabilities. It also supports hierarchical identifiers. We propose a concrete scheme under our generalized model and prove it secure without random oracles, yielding the first strongly-secure security-mediated CLE and the first TRE in the standard model. In addition, our technique of partial decryption is different from the previous approach.

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Author information

Authors and Affiliations

  1. Department of Computer Science Courant Institute of Mathematical Sciences, New York University, NY 10012, USA

    Sherman S. M. Chow

  2. FX Palo Alto Laboratory,  , 3400 Hillview Avenue, Palo Alto, CA 94304, USA

    Volker Roth & Eleanor G. Rieffel

Authors
  1. Sherman S. M. Chow
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  2. Volker Roth
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  3. Eleanor G. Rieffel
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Rafail Ostrovsky Roberto De Prisco Ivan Visconti

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© 2008 Springer-Verlag Berlin Heidelberg

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Chow, S.S.M., Roth, V., Rieffel, E.G. (2008). General Certificateless Encryption and Timed-Release Encryption. In: Ostrovsky, R., De Prisco, R., Visconti, I. (eds) Security and Cryptography for Networks. SCN 2008. Lecture Notes in Computer Science, vol 5229. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-85855-3_9

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  • DOI: https://doi.org/10.1007/978-3-540-85855-3_9

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-85854-6

  • Online ISBN: 978-3-540-85855-3

  • eBook Packages: Computer ScienceComputer Science (R0)

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