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Vehicular ad hoc networks (VANETs) have attracted significant attention in academia insofar as they can provide reliable and secure communication between vehicles. It is thus essential to ensure security and preserve privacy. In this paper, we propose mix-context-based pseudonym changing privacy-preserving authentication (MPCPA). MPCPA introduces privacy protection through a mutual authentication mechanism to prevent attack-vehicles from sneaking into a VANET system. Moreover, it preserves thedoi:10.1155/2019/3109238 fatcat:7g6uz5p7ojdwpef74lyqqruada