Enhancements of authenticated multiple key exchange protocol based on bilinear pairings

Duc Liem Vo, Hyunrok Lee, Chan Yeob Yeun, Kwangjo Kim

Research output: Contribution to journalArticlepeer-review

55 Scopus citations


Lee et al. [4] proposed two new authenticated multiple key exchange protocols based on Elliptic Curve Cryptography (ECC) and bilinear pairings. In this paper, we show an impersonation attack on their pairing-based authenticated key exchange protocol. We demonstrate that any attacker can impersonate an entity to share multiple session keys with another entity of his/her choice by using only the public key of the victim. Moreover, their protocol fails to provide perfect forward secrecy, despite of their claim to the contrary. Thus, we propose a simple modification to the original protocol which avoids our attack.

Original languageBritish English
Pages (from-to)155-159
Number of pages5
JournalComputers and Electrical Engineering
Issue number1
StatePublished - Jan 2010


  • Authenticated key exchange
  • Bilinear pairing
  • Cryptanalysis
  • Cryptography


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