Improved Efficiency for CCA-Secure Cryptosystems Built Using Identity-Based Encryption

Dan Boneh; Jonathan Katz

Paper 2004/261

Improved Efficiency for CCA-Secure Cryptosystems Built Using Identity-Based Encryption

Dan Boneh and Jonathan Katz

Abstract

Recently, Canetti, Halevi, and Katz showed a general method for constructing CCA-secure encryption schemes from identity-based encryption schemes in the standard model. We improve the efficiency of their construction, and show two specific instantiations of our resulting scheme which offer the most efficient encryption (and, in one case, key generation) of any CCA-secure encryption scheme to date.

Metadata

Available format(s): PDF PS
Category: Public-key cryptography
Publication info: Published elsewhere. This is an updated version of the paper to appear at CT-RSA 2005
Keywords: chosen-ciphertext security identity-based encryption
Contact author(s): jkatz @ cs umd edu
History: 2004-10-19: revised; 2004-10-14: received; See all versions
Short URL: https://ia.cr/2004/261
License: CC BY

BibTeX

@misc{cryptoeprint:2004/261,
      author = {Dan Boneh and Jonathan Katz},
      title = {Improved Efficiency for CCA-Secure Cryptosystems Built Using Identity-Based Encryption},
      howpublished = {Cryptology ePrint Archive, Paper 2004/261},
      year = {2004},
      note = {\url{https://eprint.iacr.org/2004/261}},
      url = {https://eprint.iacr.org/2004/261}
}