Privacy-Preserving Scheme With Smart Contracts and Quadtree in 5G for Fog-Enhanced Smart Logistics

In the 5G era, fog-enhanced smart logistics integrates fog computing, along with advanced network communication and information physics systems, into the integrated logistics system to achieve more intelligent and accurate package management and delivery. However, with the mobility of fog nodes, it increases the risk of data privacy leakages and the difficulty of access control management. To address this issue, this article proposes a privacy-preserving scheme with smart contracts and quadtree in 5G for fog-enhanced smart logistics, named PSCQ-FSL. This scheme is based on the logistics chain platform and achieves the generation, circulation, and processing of logistics data by executing preset smart contract algorithms. To protect user privacy, a fine-grained data encryption system has been used here, and precise access control of data is achieved through smart contracts. In addition, the logistics path selection algorithm based on quadtree is designed to ensure the efficiency and fairness of this scheme. Considering the characteristics of the logistics chain, we have improved the delegated proof of stake consensus algorithm to make it more suitable for the proposed scheme. The extended experimental results indicate that the proposed scheme is privacy preserving, secure, and efficient.