scholarly journals An efficient cooperative message authentication based on reputation mechanism in vehicular ad hoc networks

2019 ◽  
Vol 15 (6) ◽  
pp. 155014771985491
Author(s):  
Yong Xie ◽  
Songsong Zhang ◽  
Xiang Li ◽  
Yanggui Li
Keyword(s):  
Ad Hoc Networks ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Computational Cost ◽  
Message Authentication ◽  
Selfish Behavior ◽  
Reputation Mechanism ◽  
Single Vehicle ◽  
Detection Ratio ◽  
Hoc Networks

Vehicular ad hoc networks have emerged as a promising approach to increasing road safety and efficiency. Vehicles periodically broadcast traffic-related status messages. Message authentication is a common way for ensuring information reliability, but it is an unaffordable computational cost for single vehicle. In this article, we propose an efficient cooperative message authentication based on reputation mechanism. In the proposed scheme, reputation model is used to assess authentication efforts of vehicles, which enhances initiative for cooperative message authentication and inhabits selfish behavior; sequence optimization algorithm solves messages overflowing on condition limited computation of onboard unit and improves the speed of message authentication at the premise of ensuring the reliability of message authentication. Simulation results show that our scheme presents a nice performance of authentication efficiency, packet loss ratio, and missing detection ratio.

scholarly journals A More Efficient Conditional Private Preservation Scheme in Vehicular Ad Hoc Networks

2018 ◽  
Vol 8 (12) ◽  
pp. 2546
Author(s):  
Tao Wang ◽  
Xiaohu Tang
Keyword(s):  
Ad Hoc Networks ◽  
Privacy Preservation ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Computational Cost ◽  
Communication Overhead ◽  
Storage Space ◽  
Anonymous Authentication ◽  
Vehicle Ad Hoc Networks ◽  
Hoc Networks

It is a challenging issue to provide a secure and conditional anonymous authentication scheme in vehicle ad hoc networks (VANETs) with low storage space and computational cost. In 2008, Lu et al. proposed a conditional privacy preservation scheme called efficiency conditional privacy preservation (ECPP) protocol. The ECPP protocol provides conditional privacy preservation to vehicles in VANETs. That is, on one hand vehicles can achieve anonymous authentication in the network, on the other hand, allow to be traced and revoked if necessary. However, ECPP scheme suffers from high computational cost and large storage. In this scheme, an improved protocol based on the concept of ECPP protocol has been proposed to achieve more efficiency conditional privacy preservation (MECPP) scheme in VANETs. Comparing with ECCP, the computational cost of the proposed scheme has been decreased by about 54 % while the communication overhead has been reduced by about 10 % . At the same time, a lot of storage space has been saved.

scholarly journals Sybil Attack Detection in Vehicular Ad-hoc Networks using Direct Trust Calculation

2020 ◽  
Vol 9 (10) ◽  
pp. 67-73
Keyword(s):  
Ad Hoc Networks ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Attack Detection ◽  
Sybil Attack ◽  
Trust Value ◽  
The Road ◽  
Direct Trust ◽  
Detection Ratio ◽  
Hoc Networks

Vehicular Ad-hoc Networks (VANETs) are gaining rapid momentum with the increasing number of vehicles on the road. VANETs are ad-hoc networks where vehicles exchange information about the traffic, road conditions to each other or to the road-side infrastructures. VANETs are characterized by high mobility and dynamic topology changes due to the high-speed vehicles in the network. These characteristics pose security challenges as vehicles can be conceded. It is critical to address security for the sake of protecting private data of vehicle and to avoid flooding of false data which defeats the purpose of VANETs. Sybil attack is one of the attacks where a vehicle fakes multiple vehicle identity to compromise the whole network. In this work, a direct trust manager is introduced which derives the trust value of each of its neighbor nodes at a regular interval of time. If the trust value is deviated, it confirms sybil attack. The proposed system is compared with the existing system to prove improved sybil attack detection ratio, thus providing better security. NS2 environment is used to prove the simulation results. The experimental results show that the attack detection ratio of SAD-V-DTC is 5 times better than that of the existing system. The packet delivery ratio shows an improvement of 27.27% while the false positive shows a good increase of 65.80% than the existing system.

Sign in / Sign up

Export Citation Format

Share Document