In this paper, a variety of cloud service combinations is used to form the control core of a smart home, realize data forwarding, storage, and analysis in the cloud, and complete the remote management of smart home devices. This paper studies the secure access control of smart home data combined with the blockchain technology and password technology to realize the secure and efficient access control of smart home data. The system can achieve the goal of independent research and development. Aiming at the problem that the access control of a smart home is generally managed by third-party authorized institutions and there is an unauthorized access, a blockchain-based smart home (BSH) access control scheme is proposed. The scheme extends the attribute-based access control model (ABAC) and applies the blockchain technology to the smart home ABAC model to realize fine-grained access control. In the scheme, the resource provider first publishes the access control policy of the resource to the blockchain. If the resource visitor wants to access the resource, he needs to submit an access request to the blockchain and use an SM2 threshold signature to process the transaction proposal. The endorsement peer node in the blockchain runs the access control policy smart contract to decide whether to grant access rights. This scheme can ensure that resource providers can participate in all the processes of access control and avoid the risk of unauthorized access caused by the centralized management of the third party. Finally, the simulation experiment is carried out on the Hyperledger Fabric alliance chain development platform. The results show that the BSH access control scheme has good applicability in the smart home scenario.

No abstract

No abstract

This study takes the use of digital teaching resources by teachers in a county junior high school in Longshan County, Hunan Province as the subject of the research, adopts constructivism, humanistic theory, and collaborative learning theory as the theoretical basis, and adopts literature analysis, case study method, questionnaire interview method, and classroom observation method. The research approach was based on the "current situation survey-problem, identificationproblem analysis, and suggestion", and the current situation and problems of using digital resources in junior high schools were used as the background to explore the impact of the results. The results of the questionnaires and tests were statistically analyzed by combining the questionnaire survey method. The classroom observation method was used to select two similar classes and to control for other variables to conduct comparative observations.