Chen and Colleagues Proposes Hybrid Certificate for Quantum-Resilient Vehicular Communications

Abel C. H. Chen of the National Institute of Standards and Technology, and colleagues, are tackling the increasing danger quantum computing poses to vehicular communication security. They propose a new hybrid certificate scheme combining Elliptic-Curve Cryptography with Post-Quantum Cryptography to strengthen existing Security Credential Management Systems against future attacks. The scheme presents a generalised pseudonym scheme designed to sever links between enrollment and pseudonym certificates, enhancing vehicle privacy. A performance evaluation of key cryptographic algorithms, RSA, ECC, and PQC, is included to recommend optimal solutions for secure and efficient vehicular communications. A 30% reduction in pseudonym certificate size now enables secure vehicular communications within the stringent 1400-byte packet length limit imposed by IEEE…