Certificateless Signature-Based Authentication Scheme for Vehicle-to-Infrastructure Communications Using Bilinear Pairing

The vehicles in VANETs communicate with each other through a wireless medium. An attacker can utilize that when launching attacks. For example, the attacker can collect sensitive messages, change them, and then spread them in VANETs to cause serious damage. Therefore, messages that are broadcast in VANETs should ensure authentication, integrity, and other security requirements. In addition, it is necessary to ensure each vehicle’s privacy, i.e., protect its original identity from malicious vehicles that try to get information about its identity, current position, and direction [15, 16].