Abstract
In response to the problems of excessive decryption computation burden on users, inability to protect users' privacy information, and the inability of traditional cloud storage methods to meet users' faster file upload and download speed requirements and track malicious users, this paper proposes an attribute-based encryption and blockchain-based trusted data access control scheme for smart home environments. The scheme combines symmetric encryption algorithms and attribute-based encryption algorithms to achieve fine-grained access control of data. At the same time, it leverages edge computing technology to outsource most of the decryption and computation operations to edge computing nodes, reducing the user's decryption and computation burden. Furthermore, the introduction of blockchain technology enables the monitoring and auditing of users within the system, achieving full traceability of access control. Finally, the proposed scheme was analyzed and validated through simulation experiments, which showed that the scheme is safe and effective, protecting users' security and privacy, and enabling secure data sharing.
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