Cryptology ePrint Archive: Report 2011/593
CCA Secure IB-KEM from the Computational Bilinear Diffie-Hellman Assumption in the Standard Model
Yu Chen and 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.
Category / Keywords: identity based encryption, standard model, CCA security, CBDH assumption
Publication Info: An extended abstract of this paper appears in the Proceedings of the 14th International Conference on Information Security and Cryptology (ICISC 2011).
Date: received 3 Nov 2011, last revised 24 Nov 2011
Contact author: cycosmic at gmail com
Available format(s): PDF | BibTeX Citation
Note: fix some typos
Version: 20111125:013112 (All versions of this report)
Short URL: ia.cr/2011/593
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