Annual International Conference on the Theory and Applications of Cryptographic Techniques

EUROCRYPT 2005: Advances in Cryptology – EUROCRYPT 2005 pp 114-127

Efficient Identity-Based Encryption Without Random Oracles

  • Brent Waters
Conference paper

DOI: 10.1007/11426639_7

Volume 3494 of the book series Lecture Notes in Computer Science (LNCS)
Cite this paper as:
Waters B. (2005) Efficient Identity-Based Encryption Without Random Oracles. In: Cramer R. (eds) Advances in Cryptology – EUROCRYPT 2005. EUROCRYPT 2005. Lecture Notes in Computer Science, vol 3494. Springer, Berlin, Heidelberg

Abstract

We present the first efficient Identity-Based Encryption (IBE) scheme that is fully secure without random oracles. We first present our IBE construction and reduce the security of our scheme to the decisional Bilinear Diffie-Hellman (BDH) problem. Additionally, we show that our techniques can be used to build a new signature scheme that is secure under the computational Diffie-Hellman assumption without random oracles.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Brent Waters
    • 1
  1. 1.Stanford University