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

Yu Chen; Liqun Chen; Zongyang Zhang

Paper 2011/593 Original: eprint.iacr.org/2011/593 ↗

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

Yu Chen

Liqun Chen

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.

Metadata

Available format(s): PDF
Publication info: Preprint.
History: 2011-11-25: last updated; 2011-11-03: published
Short URL: https://ia.cr/2011/593
License: https://creativecommons.org/licenses/by/4.0/

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},
      url = {https://eprint.iacr.org/2011/593}
}