| Sumario: | Fog computing especially wants to process an outsized amount of data created by terminal devices. As fog nodes are the closest spotters to the terminal devices, the processed data could also be tinkered with or illegally captured by some dangerous nodes while the info is transferred or piled up. When some applications need to require a real-time process with high security, cloud service may represent some data from fog service to check final results. The suggested system is a secure data query structure for both fog and cloud computing. We use cloud service to see queried data from the fog network when the fog network furnishes queried data to users. In the framework, the cloud server pre-assign a few facts aggregation topology trees to the fog community, then the fog community might also additionally spot associated facts from fog nodes constant with one the various pre-assigned facts aggregation trees. Moreover, some fog nodes are allocated as sampled nodes which will feedback related data to the cloud server. Based on the safety requirements of fog computing, we inspect the safety of our proposed framework. The Proposed framework not only assures the reliability of essential data but also effectively guards data against a man-in-the-middle attack, single node attack, and collusion attack of dangerous users. Also, the experiments show our framework is powerful and methodical.
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