Blockchain IOTA Sharding-Based Scalable Secure Group Communication in Large VANETs

【Author】 Naresh, Vankamamidi S.; Allavarpu, V. V. L. Divakar; Reddi, Sivaranjani

【Source】IEEE INTERNET OF THINGS JOURNAL

【影响因子】10.238

【Abstract】The advent of group-oriented communication applications has triggered research on secure group communication (SGC) in vehicular ad hoc networks (VANETs). Given this, some researchers worked in this area and proposed various schemes. However, these systems lacking the dynamic nature, and struggling with larger processing loads, enormous storage, increased communications, security, and privacy concerns. Further, with the increase in the size of VANET, it is challenging to manage processing loads and storage requirements of group controller (GC)-centric group key agreement (GKA). To address these drawbacks in existing VANET communications, we propose a blockchain IOTA sharding-based smart contract-centric GKA for SGC in large VANETs. In this scheme, we partition the main network into r sharded subnetworks using blockchain sharding technique, with G(1), G(2), G(3), . . . , G(r) as smart contract (SC) instances generated by GC, G, which functions as Sub GC (Sub-GC) to their respective shards. Under the Elliptic curve decision Diffie-Hellman (ECDDH) and group-Elliptic curve Diffie-Hellman (GECCDH) assumptions, the proposed protocol is proven to be secure. The suggested protocol outperforms the other protocols for secure communication in large VANETs, according to the performance analysis.

【Keywords】Vehicular ad hoc networks; Blockchains; Security; Protocols; Internet of Things; Privacy; Public key; Blockchain; group key agreement (GKA); group controller (GC); IOTA; privacy preserving; sharding; smart contract (SC)

【发表时间】2023 15-Mar

【收录时间】2023-05-22

【文献类型】理论模型

【主题类别】

区块链技术-协同技术-密码学