Transparent and Accountable Vehicular Local Advertising With Practical Blockchain Designs

Vehicular local advertising enables roadside retailers to provide timely and location-aware advertisements to on-road vehicular users to attract more in-store visits. However, the prevalence of the vehicular local advertising has raised increasing transparency and accountability concerns on the spatial keyword query process, such as why a vehicular user receives advertisements from specific spatial entities as well as the timely detection of the advertising misbehavior. In this paper, the authors develop a transparent and accountable vehicular local advertising system by utilizing the tamper-proof and open nature of the blockchain technology. Considering the large scale of the spatial-keyword database and the expensive computation and storage cost on the blockchain, the authors introduce two design strategies, digest-and-verify and divide-then-assemble. In specific, a large-scale spatial keyword database is digested and stored on the blockchain. The spatial keyword query is then conducted with modular executions of two off-chain spatial keyword query functions, the results of which are efficiently assembled and verified in an advertising smart contract. By doing so, expensive on-chain computation and storage overheads are significantly reduced at a cost of acceptable off-chain overheads. The authors define the security requirements of the vehicular local advertising system as Auditing Security and achieve the notion with the security analysis. The authors also conduct real-world experiments to show the efficiency of the blockchain-based vehicular local advertising system.


  • English

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  • Accession Number: 01766766
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 2 2021 10:20AM