CCA Secure IB-KEM from the Computational Bilinear Diffie-Hellman Assumption in the Standard Model

Yu Chen; Liqun Chen; Zongyang Zhang

Paper 2011/593

CCA Secure IB-KEM from the Computational Bilinear Diffie-Hellman Assumption in the Standard Model

Yu Chen, Liqun Chen, and Zongyang Zhang

Abstract

In this paper, we propose several selective-identity chosen-ciphertext attack secure iden- tity based key encapsulation (IB-KEM) schemes that are provably secure under the computational bilinear Diffie-Hellman (CBDH) assumption in the standard model. Our schemes compare favor- ably to previous results in efficiency. With delicate modification, our schemes can be strengthened to be full-identity CCA secure easily.

Note: fix some typos

Metadata

Available format(s): PDF
Publication info: Published elsewhere. An extended abstract of this paper appears in the Proceedings of the 14th International Conference on Information Security and Cryptology (ICISC 2011).
Keywords: identity based encryption standard model CCA security CBDH assumption
Contact author(s): cycosmic @ gmail com
History: 2011-11-25: last of 2 revisions; 2011-11-03: received; See all versions
Short URL: https://ia.cr/2011/593
License: CC BY

BibTeX

@misc{cryptoeprint:2011/593,
      author = {Yu Chen and Liqun Chen and Zongyang Zhang},
      title = {CCA Secure IB-KEM from the Computational Bilinear Diffie-Hellman Assumption in the Standard Model},
      howpublished = {Cryptology ePrint Archive, Paper 2011/593},
      year = {2011},
      note = {\url{https://eprint.iacr.org/2011/593}},
      url = {https://eprint.iacr.org/2011/593}
}