Secure Identity Based Encryption Without Random Oracles

Dan Boneh; Xavier Boyen

Paper 2004/173

Secure Identity Based Encryption Without Random Oracles

Dan Boneh and Xavier Boyen

Abstract

We present a fully secure identity based encryption scheme whose proof of security does not rely on the random oracle heuristic. Security is based on the decisional bilinear Diffie-Hellman assumption. Previous constructions of this type incurred a large penalty factor in the security reduction from the underlying complexity assumption. The security reduction of the present system is polynomial in all the parameters.

Metadata

Available format(s): PDF PS
Category: Public-key cryptography
Publication info: Published elsewhere. An extended abstract appears in CRYPTO 2004.
Keywords: identity-based encryption provable security
Contact author(s): eprint @ boyen org
History: 2004-07-21: revised; 2004-07-21: received; See all versions
Short URL: https://ia.cr/2004/173
License: CC BY

BibTeX

@misc{cryptoeprint:2004/173,
      author = {Dan Boneh and Xavier Boyen},
      title = {Secure Identity Based Encryption Without Random Oracles},
      howpublished = {Cryptology {ePrint} Archive, Paper 2004/173},
      year = {2004},
      url = {https://eprint.iacr.org/2004/173}
}