Multi-Authorization Center Attribute-Based Encryption Scheme Based on Internet of Things

With the rapid development of the Internet of Things (IoT) and the continuous expansion of the application market, the problem of data sharing and security of IoT devices has been fully emphasized. To address this problem, a multiauthorized centralized attribute-based encryption scheme based on the characteristics of IoT data sharing is proposed. The scheme can realize fine-grained access control of ciphertext data while guaranteeing data privacy. The attribute-based encryption scheme with multiple authorization centers is firstly adopted to solve the user collusion problem. The IoT access server is introduced in the IoT architecture to complete the attribute-based encryption operation, and the MQTT server and RocketMQ server are built to complete the integration of device message processing and attribute-based encryption algorithm. Finally, through theoretical analysis and experimental results, it is proved that the scheme proposed in this paper has advantages in the security of multi-authorization attribute-based encryption scheme, and this scheme is more suitable for IoT environment.