Intrusion prevention and Message Authentication Protocol (IMAP) using Region Based Certificate Revocation List Method in Vehicular Ad hoc Networks

摘要

Vehicular Ad-hoc network uses some advanced Public Key Infrastructure and digital signature method for security. But, intrusion detection and avoidance is an inevitable challenge in networks. Authentication is performed in any PKI (Public Key Infrastructure) system by checking if the certificate of the sender is included in the CRL (Certificate Revocation List) and verifying the authenticity and checking the sign of the sender. This study focuses on efficient certificate revocation list management by region based certificate revocation list distribution protocol. Instead of storing all invalid vehicle identity in a single CRL, each region maintains a separate CRL which contains the invalid vehicle's identity in the region. This CRL checking process has been done using by Hash function technique, i.e., Bloom Filter which avoids false negative. It replaces the time-consuming CRL Checking process. This protocol can reduce message loss ratio by using fast revocation checking and the CRL updating method as well as it needs very less memory space compared to other methods.