@inproceedings{5c407a274df24883abca3670b79e4992,
title = "Efficient and Secure Data Sharing in Scalable C-V2X with Dynamic Sharding Blockchain and Zero-Knowledge Proofs",
abstract = "The advent of Cellular Vehicle-to-Everything (CV2X) technology has revolutionised intelligent transportation systems (ITS), but poses challenges for secure and efficient data sharing due to its dynamic nature. Traditional centralised systems are inadequate, prompting the need for decentralised solutions like blockchain. However, applying blockchain technologies in C-V2X always faces scalability issues. This paper proposes a scalable C-V2X blockchain network with a hierarchical consensus by integrating a dynamic load-balancing sharding mechanism and zero-knowledge proofs (ZKPs). Our scheme ensures scalability in the C-V2X environment through sharding while utilising ZKPs to enhance cross-shard validation efficiency, reducing its complexity to O(1). Additionally, our approach reduces bandwidth consumption by 90.8\% compared to Merkle tree-based solutions and its consensus time is lower than 360 ms.",
keywords = "Blockchain, C-V2X, Sharding, Zero-Knowledge Proof",
author = "Ningyuan Chen and Kwong, \{Chiew Foong\} and David Chieng and Pushpendu Kar and Zheng Chu and Pingzhi Fan",
note = "Publisher Copyright: {\textcopyright} 2025 IEEE.; 2025 IEEE International Conference on Communications, ICC 2025 ; Conference date: 08-06-2025 Through 12-06-2025",
year = "2025",
doi = "10.1109/ICC52391.2025.11161890",
language = "English",
series = "IEEE International Conference on Communications",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "2918--2924",
editor = "Matthew Valenti and David Reed and Melissa Torres",
booktitle = "ICC 2025 - IEEE International Conference on Communications",
address = "United States",
}