Security architecture parameters in VANETs

Vehicular area networks are prone to very fast topology changes and require support for multiple types of services. This leads to a requirement of strict guarantees for quality of services (QoS). Many real time or partial real time applications are bound to share the user information which may hurt privacy of the user. In critical scenarios where quick decision making is of high importance, users may not be able to adhere to standard cryptographic procedures, and this may lead to false decisions. This paper compares different options available for cryptographic procedures and proposes a mechanism for swift decision making based on regional and application based certificates.