Vehicular ad-hoc network data security sharing and storage system based on blockchain technology

Abstract

The invention discloses a vehicular ad-hoc network data security sharing and storage system based on a blockchain technology. The vehicular ad-hoc network data security sharing and storage system based on the blockchain technology comprises a vehicle, a roadside unit, and a trusted institution. When data shared by the roadside unit, the vehicle performs digital signature on interactive informationby using a bilinear algorithm based on an elliptic curve to ensure the non-repudiation and integrity of the data; the roadside unit packs the collected data into a block, and uses the Byzantine fault-tolerant consensus mechanism to make the data block reach a coherent protocol across the network, thereby improving the fault tolerance of the system and making system more stable; after reaching theconsensus, the block is sorted by a smart contract in the roadside unit and stored in the blockchain, and other consensus nodes save the data synchronously; and the system rewards a corresponding number of data coins to the roadside unit, and then the data coins are assigned to the vehicle contributing the data by the smart contract, so as to keep the entire system active and stable.

Description

Technical field [0001] The invention belongs to the secure transmission and storage of data in a vehicle ad-hoc network (Vehicular Ad-Hoc Network, VANET), and relates to blockchain technology in the field of information security, and digital signature verification technology based on bilinear pairing properties on elliptic curves . Background technique [0002] As a part of the intelligent transportation system, the vehicle-mounted self-organizing network improves traffic flow and reduces congestion, and provides convenient information services. Its goal is to provide self-organized data transmission capabilities for vehicles on the road and to achieve applications such as assisted vehicle driving and safety warnings. The traffic management center can reasonably allocate road resources through distributed synchronization and coordination. Therefore, the on-board self-organizing network will play a major role in the development of intelligent transportation systems to ensure the...

AI Technical Summary

Problems solved by technology

But their scheme lacks practical issues such as pre-selected node management and scalability

Jia Wenkang of Guangdong University of Technology and others designed a peer-to-peer power transaction model based on the alliance blockchain. Although it solved the scalability problem, it found that its security could not be fully guaranteed during the information transaction process and was vulnerable to security attacks.

Because the traditional blockchain system (for example, Bitcoin) requires all nodes in the entire network to agree and bookkeeping together, this will lead to practical problems such as inefficiency and network congestion

Moreover, the above scheme is not very suitable for solving the security problems of data sharing and storage in the vehicle ad hoc network

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