Cryptanalysis of Wang et al.’s lattice-based key exchange protocol

详细信息    查看全文

• 作者：Daya Sagar Gupta ; ^{dayasagar.ism@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; G.P. Biswas
• 关键词：Lattice-based cryptography ; Man-in-the-middle attack ; Key exchange protocol ; Cryptanalysis
• 刊名：Perspectives in Science
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：8
• 期：Complete
• 页码：228-230
• 全文大小：363 K

文摘

Wang et al. proposed a new hard problem on lattices which is an extension of the small integer solution (SIS) on lattices. This new generated hard problem is named to be bilateral in-homogeneous small integer solution (Bi-ISIS). Using the hardness of Bi-ISIS, Wang et al. proposed a new key exchange protocol, which is based on the lattice-based cryptography. In this paper, we signalize that Wang et al.’s lattice-based key exchange protocol is vulnerable to an attack, namely, man-in-the-middle (MITM) attack. Through this attack, Eavesdropper can intercept the authenticated messages and communicate the unauthentic messages among the communicating parties.