Smart metering was initially used for electricity and natural gas. Smart water meters (SWMs) have attracted much attention in recent years. SWMs are installed in users' homes to collect users with water consumption information. However, SWMs real-time data collection can reveal users' private information. The paper proposes a secure smart water meter data aggregation scheme based on edge computing. The solution adopts Boneh-Goh-Nissim cryptosystem, BLS short signature and edge computing to protect users' privacy information. It can resist various attacks and protect the water consumption data of users from being leaked. The solution can resist various attacks while protecting the user's water consumption data information from being leaked. The performance evaluation shows that the communication cost of this scheme are lower than those of the existing schemes.
Smart agriculture is a new agricultural production model integrating Internet, cloud computing and Internet of things, which provides precision planting and online services for agricultural production. The accuracy and reliability of agricultural data collection affect agricultural decision-making, so it is very necessary to protect agricultural privacy data. Existing solutions usually require the cooperation of trusted institutions, which is not practical. Blockchain adopts the PBFT consensus algorithm and does not require a trusted third party. Edge computing can greatly improve the efficiency of data aggregation and save data transmission time. Hence, this paper proposes a data collection scheme with a faulttolerant property based on blockchain and edge computing to protect sensitive information in smart agriculture. It is proved to be data security, privacy protection, and fault tolerance with the performance simulation and security analysis.
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