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The objective of the vehicular ad-hoc network (VANET) is to mobilize transportation systems along with the enhancement of safeguard and efficiency. Security and anonymity are important aspects of VANET too. Vehicle-to-vehicle (V2V) communication fulfills most of the requirements in VANET except the security breaches. Authentication protocols are designed to improve security by validating legitimate users in V2V communication. In this research, we proposed a two-factor authentication protocol using user biometric-based and password-based, which can support minimum or no VANET infrastructure environments. Furthermore, we performed an informal security analysis on the aforesaid protocol and shown the security features of it. We further discussed the future scope of the research in the field of VANET authentication.
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Nandy et al. (2020) studied this question.