  This paper aims to provide differentiated security protection for
infotainment data communication in Internet-of-Vehicle (IoV) networks. The IoV
is a network of vehicles that uses various sensors, software, built-in
hardware, and communication technologies to enable information exchange between
pedestrians, cars, and urban infrastructure. Negligence on the security of
infotainment data communication in IoV networks can unintentionally open an
easy access point for social engineering attacks. The attacker can spread false
information about traffic conditions, mislead drivers in their directions, and
interfere with traffic management. Such attacks can also cause distractions to
the driver, which has a potential implication for the safety of driving. The
existing literature on IoV communication and network security focuses mainly on
generic solutions. In a heterogeneous communication network where different
types of communication coexist, we can improve the efficiency of security
solutions by considering the different security and efficiency requirements of
data communications. Hence, we propose a differentiated security mechanism for
protecting infotainment data communication in IoV networks. In particular, we
first classify data communication in the IoV network, examine the security
focus of each data communication, and then develop a differentiated security
architecture to provide security protection on a file-to-file basis. Our
architecture leverages Named Data Networking (NDN) so that infotainment files
can be efficiently circulated throughout the network where any node can own a
copy of the file, thus improving the hit ratio for user file requests. In
addition, we propose a time-sensitive Key-Policy Attribute-Based Encryption
(KP-ABE) scheme for sharing subscription-based infotainment data...
