International Conference on the Theory and Applications of Cryptographic Techniques

EUROCRYPT 2004: Advances in Cryptology - EUROCRYPT 2004 pp 223-238

Efficient Selective-ID Secure Identity-Based Encryption Without Random Oracles

  • Dan Boneh
  • Xavier Boyen
Conference paper

DOI: 10.1007/978-3-540-24676-3_14

Volume 3027 of the book series Lecture Notes in Computer Science (LNCS)
Cite this paper as:
Boneh D., Boyen X. (2004) Efficient Selective-ID Secure Identity-Based Encryption Without Random Oracles. In: Cachin C., Camenisch J.L. (eds) Advances in Cryptology - EUROCRYPT 2004. EUROCRYPT 2004. Lecture Notes in Computer Science, vol 3027. Springer, Berlin, Heidelberg

Abstract

We construct two efficient Identity Based Encryption (IBE) systems that are selective identity secure without the random oracle model. Selective identity secure IBE is a slightly weaker security model than the standard security model for IBE. In this model the adversary must commit ahead of time to the identity that it intends to attack, whereas in the standard model the adversary is allowed to choose this identity adaptively. Our first secure IBE system extends to give a selective identity Hierarchical IBE secure without random oracles.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Dan Boneh
    • 1
  • Xavier Boyen
    • 2
  1. 1.Computer Science DepartmentStanford UniversityStanfordUSA
  2. 2.Voltage SecurityPalo Alto