A NEW ENHANCED AUTHENTICATED KEY AGREEMENT PROTOCOL

Document Type : Original Article

Authors

Faculty of Science, Mathematics Department, Al-Azhar University, Cairo - Egypt

Abstract

In 2010, Deng and Deng investigated several Seo-Sweeny related protocols and presented a
new improvement to Tseng’s protocol to avoid discovered attacks such as modification and off-line
password guessing attacks. In this paper, we show that Deng-Deng protocol is still vulnerable to offline
password guessing attack, and then we present an enhancement to prevent such attacks.