CAESAR : A criticality-aware ECDSA signature verification scheme with Markov Model\ud

摘要

Intelligent transport systems (ITS) facilitate road\udtraffic by periodically exchanging messages with neighbouring\udvehicles, road side units (RSUs) and ITS stations. For security\udreasons these messages will be encapsulated with security credentials\udto form secured messages (SMs) and will be inoperative\uduntil the authentication completes. This creates a challenge\udin a dynamic and dense road network where many SMs are\udawaiting authentication. To address this problem, we propose\udCAESAR, a criticality-aware Elliptic Curve Digital Signature\udAlgorithm (ECDSA) signature verification scheme that utilizes\udmulti-level priority queues (MLPQs) and Markov model to dispatch\udand schedule SMs. Simulation results verify the accuracy\udof CAESAR and the enhancements in terms of several safety\udawareness metrics compared with the existing schemes.\ud