VANET Authentication with Privacy-Preserving Schemes—A Survey

Intelligent transportation has provided tremendous convenience to drivers as they have gained interest in Vehicle Ad Hoc Networks (VANETs). The messages can be broadcasted by any user on the open communication network. In some cases, the user can misbehave by sending wrong messages, malicious and bogus messages that disrupt the system’s normal operation. As a result, we required to verify the message sender’s identity. Due to its greater security over single-component user authentication, multi-component user authentication is becoming increasingly popular. Existing security and privacy authentication schemes, on the other hand, necessitate repeated interactions between users and various authentication components when sensing many components, resulting in additional costs and poor user experiences. Most of the existing schemes is not efficient to perform the certification validation due to the transmission overhead. As a result, these techniques are not suitable to implement real-life problems. Different types of authentication schemes are analyzed to perform the comparison between the varieties of components to improve the security requirements and efficiency in this paper.