A Digital Signature Architecture Suitable for V2V Applications

The elliptic curve digital signature algorithm(ECDSA) is widely used for guaranteeing data integrity anduser authentication in internet of things (IoT) applicationssuch as intelligent transport systems (ITS). In ITS, vehicles,infrastructures, and data networks communicate using vehicle-to-everything (V2X) protocols. In V2X message broadcasting,the ECDSA guarantees data security and privacy. During trafficcongestion, the signature generation/verification latency becomescrucial. Hence, this paper proposes a high-throughput andefficient ECDSA architecture for vehicle-to-vehicle (V2V) appli-cations. We investigate the double point multiplication (DPM)method for reducing computational overhead and propose anew finite field multiplier architecture for latency improvement.Our implementation results overp256on Virtex-7 field pro-grammable gate array (FPGA) show that our design's throughputand efficiency are improved compared to previous works byat least 4.9xand 7.2x, respectively. This unit generates asignature in 167 mu sand verifies a message in 188 mu s. Also, ourapplication-specific integrated circuit (ASIC) synthesis on 45nmand 180nmtechnologies can verify 4416 messages per second byconsuming 1.3 mu Jand 9.4 mu Jenergy, respectively. This advantagemakes the design affordable for other IoT applications