[Resource Topic] 2006/013: Comments on a Provably Secure Three-Party Password-Based Authenticated Key Exchange Protocol Using Weil Pairings

Resource Cryptographic protocols
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Welcome to the resource topic for 2006/013

Title:
Comments on a Provably Secure Three-Party Password-Based Authenticated Key Exchange Protocol Using Weil Pairings

Authors: Hung-Yu Chien

Abstract:

In 2005, Wen et al. proposed the first provably secure three-party password-based authenticated key exchange using Weil pairings, and provided their proof in a modified Bellare-Rogaway model (BR-model). Here, we show an impersonation attack on Wen et al.¡¦s scheme and point out a main flaw of their model that allows a man-in-the-middle adversary easily violate the security.

ePrint: https://eprint.iacr.org/2006/013

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