Yohei Kawada

Data access control for energy-related services in smart public infrastructures

A method for access control over energy consumption data in a smart city is proposed.Possible practical services using energy consumption data and the requirements of data access control for these services are clarified.The proposed access control method is intended to be simple to allow SQL, a common database language, to implement access control.Results of an experiment using a virtual one-day dataset of a middle-sized city show that the overhead incurred by access control is less than 10%. In smart urban infrastructures, access control technology is needed to provide appropriate consumer data to appropriate service providers. In this paper, we analyse the characteristics of and problems with data access in the service platform for smart city public infrastructures to clarify requirements for data access control. Then, we propose a data access control method that satisfies these requirements. The data access control method encompasses a data model for access authorization information that reflects the contracts between consumers and service providers. We develop a prototype system that implements the proposed access control method and experimentally show that the proposed method satisfies performance requirement using the prototype system.