scholarly journals Bring Your Own Reputation: A Feasible Trust System for Vehicular Ad Hoc Networks

2018 ◽  
Vol 7 (3) ◽  
pp. 37 ◽  
Author(s):  
Ricardo Mühlbauer ◽  
João Kleinschmidt
Keyword(s):  
Ad Hoc Networks ◽  
Traffic Control ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Mobile Network ◽  
Decision Mechanism ◽  
Malicious Behavior ◽  
Trust System ◽  
Digital Certificates ◽  
Hoc Networks

The establishment of trust in vehicular ad hoc networks (VANETs) will require the application of non-conventional measures of information security, such as reputation of the participants. The system proposed in this paper uses the concept of certified reputation, in which vehicles communicate providing digital certificates that include their own reputation level. The vehicles periodically come in contact with certification and traffic control authorities to update their reputation levels, which are determined by the validation of their behavior on the network. Decision-making mechanisms in the receiver vehicles are responsible for evaluating whether the messages are true or false, based on the reputation of the communication nodes. The quantitative analysis of simulated scenarios showed the combination of the central reputation scheme with an appropriate vehicular decision mechanism achieved a total of correct decisions superior than without reputation systems. Considering the constraints of a high mobile network, the proposed system is a feasible way to reduce the risk of anomalous or malicious behavior in a vehicular network.

Study of Ad hoc Networks with Reference to MANET, VANET, FANET

2017 ◽  
Vol 7 (7) ◽  
pp. 390 ◽  
Author(s):  
Bodhy Krishna .S
Keyword(s):  
Ad Hoc Networks ◽  
Ad Hoc Network ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Mobile Network ◽  
Wireless Ad Hoc Network ◽  
Mobile Ad Hoc ◽  
Autonomous Nodes ◽  
Hoc Networks ◽  
Network Administration

A wireless ad hoc network is a decentralized type of wireless network. It is a type of temporary computer-to-computer connection. It is a spontaneous network which includes mobile ad-hoc networks (MANET), vehicular ad-hoc networks (VANET) and Flying ad-hoc networks (FANET). A MANET is a network that has many free or autonomous nodes often composed of mobile devices that can operate without strict top-down network administration [1]. A VANET is a sub form of MANET. It is a technology that uses vehicles as nodes in a network to create a mobile network. FANET is an ad-hoc network of flying nodes. They can fly independently or can be operated distantly. This paper discusses the characteristics of these three ad-hoc networks.

scholarly journals BECSI: Bandwidth Efficient Certificate Status Information Distribution Mechanism for VANETs

2013 ◽  
Vol 9 (4) ◽  
pp. 347-370 ◽  
Author(s):  
Carlos Gañán ◽  
Jose L. Muñoz ◽  
Oscar Esparza ◽  
Jonathan Loo ◽  
Jorge Mata-Díaz ◽  
...  
Keyword(s):  
Ad Hoc Networks ◽  
Response Time ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Mobile Network ◽  
Information Distribution ◽  
Certificate Revocation ◽  
Security Standard ◽  
Status Information ◽  
Hoc Networks

Certificate revocation is a challenging task, especiallyin mobile network environments such as vehicular ad Hoc networks (VANETs).According to the IEEE 1609.2 security standard for VANETs, public keyinfrastructure (PKI) will provide this functionality by means of certificate revocation lists (CRLs).When a certificate authority (CA)needs to revoke a certificate, itglobally distributes CRLs.Transmitting these lists pose a problem as they require high update frequencies and a lot of bandwidth. In this article, we propose BECSI, aBandwidth Efficient Certificate Status Informationmechanism to efficiently distributecertificate status information (CSI) in VANETs.By means of Merkle hash trees (MHT), BECSI allowsto retrieve authenticated CSI not onlyfrom the infrastructure but also from vehicles actingas mobile repositories.Since these MHTs are significantly smaller than the CRLs, BECSIreduces the load on the CSI repositories and improves the response time for the vehicles.Additionally, BECSI improves the freshness of the CSIby combining the use of delta-CRLs with MHTs.Thus, vehicles that have cached the most current CRLcan download delta-CRLs to have a complete list of revoked certificates.Once a vehicle has the whole list of revoked certificates, it can act as mobile repository.

scholarly journals A Game Theory Based Approach for Power Efficient Vehicular Ad Hoc Networks

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Kun Hua ◽  
Xing Liu ◽  
Zheyi Chen ◽  
Mingyue Liu
Keyword(s):  
Ad Hoc Networks ◽  
Power Efficiency ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Mobile Network ◽  
Repeated Game ◽  
Noncooperative Game ◽  
Green Communications ◽  
Power Efficient ◽  
Hoc Networks

Green communications are playing critical roles in vehicular ad hoc networks (VANETs), while the deployment of a power efficient VANET is quite challenging in practice. To add more greens into such kind of complicated and time-varying mobile network, we specifically investigate the throughput and transmission delay performances for real-time and delay sensitive services through a repeated game theoretic solution. This paper has employed Nash Equilibrium in the noncooperative game model and analyzes its efficiency. Simulation results have shown an obvious improvement on power efficiency through such efforts.

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