Using SPIN to Detect Vulnerabilities in the AACS Drive-Host Authentication Protocol

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Abstract

In this paper, we use SPIN, a model checker for LTL, to detect vulnerabilities in the AACS drive-host authentication protocol. Before the detection, we propose a variant of the Dolev-Yao attacker model [4] and incorporate the synthesis and analysis rules [7] to formalize the protocol and the intruder capabilities. During the detection, we check the authenticity of the protocol and identify a few weaknesses. Besides, we propose a novel collusion attack that seriously threaten the security of the protocol, and build a corresponding LTL formula. Based on the formula, SPIN detects a few relevant attack instances in the original scheme of the authentication protocol and a modified scheme advanced in [5].