Abstract

The need to evict compromised, faulty, or illegitimate nodes is well understood in prominent projects designing security architectures for Vehicular Communication (VC) systems. The basic approach envisioned to achieve this is via distribution of Certificate Revocation Lists (CRLs). Nonetheless, the problem of how to distribute CRLs effectively and efficiently has not been investigated. In this paper, we addresses exactly this problem. We propose a flexible, simple, and scalable design that leverages on road-side VC infrastructure. Our scheme can distribute large CRLs across wide VC regions within minutes, by utilizing a bandwidth of only a few Kbps at each road-side infrastructure unit.

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