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Robust Identity-Based Signcryption Scheme for Vehicular Ad Hoc Networks
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Summary
This paper proposes RIBSC, a Robust Identity-based Signcryption scheme for VANETs, to address weaknesses in transmission robustness and identity privacy in existing schemes. It uses a Chinese Residual Theorem (CRT) based area session key distribution mechanism that can revoke malicious Roadside Units (RSUs) in real time, and a traceable pseudonym mechanism that protects vehicle and RSU identities while allowing true identities to be tracked when illegal activity occurs. The authors report a security proof under the random oracle model and experiments showing performance gains, with session information fixed at 148 bytes regardless of RSU count.