An attribute based encryption scheme with supervision of IoT devices in 5G cloud and fog environment

Internet of Things (IoT) industry is exploding quickly. The application of 5G network makes the interaction between IoT devices and outside network more frequently. The function of cloud server is storing the data sent by the IoT devices via 5G network. Fog nodes are adopted to help conduct the complex tasks for cloud server and IoT devices. However, the lack of supervision of IoT devices become the hidden risk because the illegal or sensitive information may be uploaded to the cloud and influence the normal operation of IoT network. To solve the problems mentioned above, we propose an encryption scheme with supervision of IoT devices in 5G cloud and fog environment (SID-ABE). Firstly, our SID-ABE scheme combines cloud and fog to realize secure data sharing and storing in 5G cloud and fog environment. Secondly, our SID-ABE scheme realizes attribute revocation of fog nodes and users. Thirdly, our SID-ABE scheme realizes supervision of IoT devices by fog nodes. Fog nodes are responsible to check the data received or sent by IoT devices for security. Fourthly, our SID-ABE scheme can withstand collusion attacks. Finally, we compare the security performance with some representative schemes.