Cryptology ePrint Archive: Report 2006/446

New Identity-Based Authenticated Key Agreement Protocols from Pairings (without Random Oracles)

Shengbao Wang and Zhenfu Cao and Kim-Kwang Raymond Choo

Abstract: We present the first provably secure ID-based key agreement protocol, inspired by the ID-based encryption scheme of Gentry, in the standard (non-random-oracle) model. We show how this key agreement can be used in either escrowed or escrowless mode. We also give a protocol which enables users of separate private key generators to agree on a shared secret key. All our proposed protocols have comparable performance to all known protocols that are proven secure in the random oracle model.

Category / Keywords: identity-based cryptography, authenticated key agreement, bilinear pairings, standard model

Publication Info: In submission.

Date: received 27 Nov 2006, last revised 5 Sep 2007

Contact author: shengbao-wang at cs sjtu edu cn

Available format(s): Postscript (PS) | Compressed Postscript (PS.GZ) | PDF | BibTeX Citation

Note: Some minor changes were made to the security proof.

Version: 20070905:163007 (All versions of this report)

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