IoT security verification framework based on 5G network slice and service method thereof

The invention provides an IoT security verification framework based on a 5G network slice and a service method thereof. Under this frame, the Internet of Things architecture comprises user equipment,an access network, a core network and an Internet of Things server, the user equipment is divided into different network slices according to different required service types and then accessed to the core network through the access network, and is connected with a data network and communicated with the Internet of Things server. A privacy protection slice selection mechanism is introduced, so thatthe fog node is allowed to select a proper network slice to carry out data forwarding, and the access service type of a user is hidden. In addition, service-oriented anonymous authentication and key agreement are realized, and the anonymity and authenticity of the user and the confidentiality of service data are ensured. Based on the framework, a user can carry out anonymous authentication on an Internet of Things server b