Signature Split Method for a PQC-DSA Compliant with V2V Communication Standards

The development of quantum computing systems poses a great threat to the security existing public key-based systems. As result, National Institute Standards and Technology (NIST) started Post-Quantum Cryptography (PQC) standardization project in 2015, currently active research is being conducted apply PQC various cryptographic protocols. Unlike elliptic curve cryptography (ECC)-based schemes, requires large memory footprint key/signature size. Therefore, when migrating protocol, depending on protocol specifications, it can be hard migrate PQC. In case WAVE difficult satisfy accuracy specific algorithm because segmentation signature occurs during transmission due limitation maximum packet this paper, we present two methodologies that while complying with IEEE 1609.2 standards V2V environment. Whereas previous migration studies have focused designing hybrid mode protocols, paper explores solutions more intuitively at application layer We analyzed postquantum digital algorithms (Crystals-Dilithium Falcon) structure basic-safety messages (BSMs) size side. Through this, propose methods perform an independent verification process without waiting for all divided signatures protocol. Our methodology overcomes schemes sizes cannot mounted into also note architecture used as on-board unit (OBU) autonomous driving environment mainly microprocessor. investigated optimized implementation OBU simulated our V2Verifier. Finally, measured accurate latency through simulation Jetson Xavier, which communication network.