Secure Distribution of Certificate Revocation List (CRL) in Vehicular Ad-hoc Network (VANET)

Abstract

In this study, we have implemented Public Key Infrastructure (PKI) with Certification Authority (CA) that will issue and verify the digital certificate of any entity or vehicle in a Vehicular Ad-hoc network (VANET). After revoking a certificate for whatever reasons, the CA generates a Certificate Revocation List (CRL), where there will be the list of revoked certificates. Distribution of CRL is crucial for the quick removal of faulty or misbehaving nodes or any entity whose key pair has been compromised. Secure distribution of CRLs can be ensured with the help of the PKI, to the VANET. We have evaluated the performance of three VANET protocols. These are Ad hoc On-Demand Distance Vector (AODV), Dynamic Source Routing Protocol (DSR) and Destination Sequence Distance Routing Protocol (DSDV). We have evaluated their performance regarding average Lost Packet Ratio (LPR) and average End to End Delay to investigate which protocol performs efficiently in propagating the CRL message to the all nodes. Our results help that there is no best protocol that performs well in every situation, rather depending on the situation, the routing protocol can be selected for the quickest distribution of CRLs.