We propose a new two-pass authenticated key exchange protocol which enjoys following desirable properties. \textbf{First}, our protocol is shown secure in the eCK model under the gap Diffie-Hellman (GDH) assumption. Moreover, our protocol does not use the NAXOS transformation, the drawback of which will be discussed in the introduction. \textbf{Second}, under the same assumption, we prove that our protocol achieves perfect forward security against active adversary in one round.
To the best of our knowledge, our proposal is first two-pass (one round) AKE protocol provably secure in the eCK model and achieving perfect forward security against active adversary.
Category / Keywords: cryptographic protocols / Publication Info: To some conference, submmision date: May 15, 2011 Date: received 27 Jun 2011 Contact author: haihuang1005 at gmail com Available formats: PDF | BibTeX Citation Version: 20110627:080352 (All versions of this report) Discussion forum: Show discussion | Start new discussion