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arXiv · 1001.2945

Weakness Analysis and Improvement of a Gateway-Oriented Password-Based Authenticated Key Exchange Protocol

He Debiao·Chen Jianhua·Hu Jin
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Abstract

Recently, Abdalla et al. proposed a new gateway-oriented password-based authenticated key exchange (GPAKE) protocol among a client, a gateway, and an authentication server, where each client shares a human-memorable password with a trusted server so that they can resort to the server for authentication when want to establish a shared session key with the gateway. In the letter, we show that a malicious client of GPAKE is still able to gain information of password by performing an undetectable on-line password guessing attack and can not provide the implicit key confirmation. At last, we present a countermeasure to against the attack.

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He Debiao, Chen Jianhua, Hu Jin. 2010-01-18. Weakness Analysis and Improvement of a Gateway-Oriented Password-Based Authenticated Key Exchange Protocol. https://arxiv.org/abs/1001.2945

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