Welcome to the resource topic for 2005/269
Title:
Security Weakness in a Three-Party Password-Based Key Exchange Protocol Using Weil Pairing
Authors: Junghyun Nam, Seungjoo Kim, Dongho Won
Abstract:Recently, Wen, Lee, and Hwang proposed a three-party
password-authenticated key exchange protocol making use of the
Weil pairing. The protocol was claimed to be provably secure. But
despite the claim of provable security, the protocol is in fact
insecure in the presence of an active adversary. We demonstrate
this by presenting an attack that completely compromises the
authentication mechanism of the protocol. Consequently, the proof
of security for the protocol is invalidated.
ePrint: https://eprint.iacr.org/2005/269
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