Abstract
With the increasing demand for intelligent traffic management and road network intelligent information services, the vehicular ad hoc networks (VANETs) combined with information of air, space and ground have outstanding advantages in coverage, reliable transmission, and resource richness. Due to the characteristics of heterogeneous, numerous nodes, and frequent cross-network flow, the space–air–ground integrated network (SAGIN) puts forward higher requirements for security. This paper proposes a cross-regional node identity management architecture based on the hash chain, combined with radio frequency (RF) fingerprint theory, to guarantee node identity security with a non-duplicated physical information identity authentication mechanism. At the same time, the blockchain consensus mechanism is simplified to achieve block recording and verification. OMNet ++, SUMO, and Veins co-simulation platforms are used to generate transactions for cross-regional traffic flow. Based on the Hyperledger–Fabric architecture, Kafka and PBFT consensus algorithms are simulated. The simulation results show that the average delay of a single transaction generated block is about 0.9 ms, which achieves efficient and low-latency authentication.
Highlights
As an indispensable part of the intelligent transportation system, vehicular ad hoc networks (VANETs) have received extensive attention from academia and industry
The space–air–ground integrated network (SAGIN) consists of platforms of different dimensions [3], including space-based platforms composed of orbiting satellites, which mainly provides a macro and global information network for the application of VANETs and realizes the mobile internet access to large-scale vehicles
For the above two experimental scenarios, 20, 40, 60, 80, 100, and 120 vehicles were generated at random positions at the speed of 8.33 m/s (30 km/h), 13.89 m/s (50 km/h), 19.44 m/s (70 km/h) and
Summary
As an indispensable part of the intelligent transportation system, VANETs have received extensive attention from academia and industry. The SAGIN consists of platforms of different dimensions [3], including space-based platforms composed of orbiting satellites, which mainly provides a macro and global information network for the application of VANETs and realizes the mobile internet access to large-scale vehicles. This paper proposes a cross-regional node identity management architecture based on the hash chain, combined with the physical identity information authentication mechanism to ensure the security of node identity. We Simplify the critical technologies of the blockchain and propose a hash-chain-based cross-regional security authentication scheme for space–air–ground integrated VANETs. We replace the traditional consensus mechanism with Kafka distributed message processing to implement the verification and backup of the records on the block. Combined with SAGIN to meet the needs of highly intelligent assisted driving, the hash-chain template is redefined according to the characteristics of network transmission.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
