Abstract
VANET (Vehicular Adhoc Network) has made an evolution in the transportation hi-tech system in most of the developed countries. VANET plays an important role in an intelligent transportation system (ITS). This paper gives an overall survey on the research in VANET security and communication. It also gives parameters considered by the previous researchers. After the survey, it considered the authentication and message forwarding issues required more research. Authentication is first line of security in VANET; it avoids attacks made by the malicious nodes. Previous research has come up with some Cryptographic, Trust based, Id based, and Group signature based authentication schemes. Speed of authentication and privacy preservation are the important parameters in VANET authentication. This paper presented the AECC (Adaptive Elliptic Curve Cryptography), and EECC (Enhanced Elliptic Curve Cryptography) schemes to improve the speed and security of authentication. In AECC, the key size is adaptive, i.e. different sizes of keys are generated during the key generation phase. Three ranges are specified for key sizes: small, large, and medium. In EECC, added an extra parameter during the transmission of information from, the vehicle to the RSU for key generation. This additional parameter gives the information about the vehicle ID, and the location of the vehicle to the RSU and the other vehicle. Under the communication issue of VANET, the paper gives priority based message forwarding for improving the message forwarding scheme. It handles emergency situations more effectively.
Highlights
The Vehicular Ad hoc Networks (VANETs) becomes a milestone in an intelligent transportation system
Advanced secure scheme based on Clustering and Key Distribution (SCKD) among members and cluster-heads in VANET
Session Granted/Rejected End c) EECC (Enhanced Elliptic Curve Cryptography) based authentication: In the Enhanced ECC algorithm, we added an extra parameter during the transmission of information from the vehicle to the RSU for key generation
Summary
The VANET becomes a milestone in an intelligent transportation system. It helps to automate the traffic monitoring system more efficiently. B. Communication in VANET 1) Wireless Access in Vehicular Environment (WAVE): Lots of efforts have been made to design the new standards for the services and the interfaces for VANET. These standards can be defined as follows [3]: IEEE 1609.1(Resource Manager): This standard defines the services, and the interfaces of the WAVE Resource Manager applications. IEEE 1609.3 (Networking Services): This standard defines the routing and transport layer services It defines a WAVE-specific message alternative to IPv6 that can be supported by the applications.
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