关键词: 车载Ad Hoc网络, 书撤销列表, 车辆速度, 证书有效期

Abstract: Certificate revocation is one of the important problems to provide the security of vehicular Ad Hoc networks, but traditional CRL distribution schemes are not suitable due to large dimension, high mobility and other related reasons. In this paper, based on consideration of node mobility patterns, speed and other characteristics, a CRL degradation scheme is firstly proposed, then a speed oriented fast certificate revocation scheme is introduced. Performance analysis shows the proposed scheme is better than traditional one when using short-lived certificates.

Key words: vehicular Ad Hoc networks, certificate revocation list, speed, valid period of certificates