Analytic model on data security in VANETs
Xuan Zha, Xu Wang, Wei Ni, Ren Ping Liu, Y Jay Guo, Xinxin Niu, Kangfeng Zheng
2017 17th International Symposium on Communications and Information Technologies (ISCIT)
Fast-changing topologies and uncoordinated transmissions are two critical challenges of implementing data security in vehicular ad-hoc networks (VANETs). We propose a new protocol, where transmitters adaptively switch between backing off retransmissions and changing keys to improve success rate. A new 3-dimensional (3-D) Markov model, which can analyze the proposed protocol with symmetric or asymmetric keys in terms of data security and connectivity, is developed. Analytical results, validated by simulations, show that the proposed protocol achieves substantially improved resistance against collusion attacks.