Security Analysis of the Khudra Lightweight Cryptosystem in the Vehicular Ad-hoc Networks

Abstract

With the enlargement of wireless technology, vehicular ad-hoc networks (VANETs) are rising as a hopeful way to realize smart cities and address a lot of vital transportation problems such as road security, convenience, and efficiency. To achieve data confidentiality, integrity and authentication applying lightweight cryptosystems is widely recognized as a rather efficient approach for the VANETs. The Khudra cipher is such a lightweight cryptosystem with a typical Generalized Feistel Network, and supports 80-bit secret key. Up to now, little research of fault analysis has been devoted to attacking Khudra. On the basis of the single nibble-oriented fault model, we propose a differential fault analysis on Khudra. The attack can recover its 80-bit secret key by introducing only 2 faults. The results in this study will provides vital references for the security evaluations of other lightweight ciphers in the VANETs.

Modeling Geographical Anycasting Routing in Vehicular Networks

“…Vehicular networks have many features including self-organization, self-management, high speed, mobility, and high dynamic topology. Of important applications of these networks, we can refer to safety, traffic management, and assisting the drivers [2,3,4]. Routing plays a crucial role in efficiency of VANET networks [5,6].…”