The Research on Security Technology of Earthquake Warning Information Release Based on Zero Trust MQTT Protocol

The national earthquake intensity rapid report and early warning project has been under construction since August 2018. Tianjin Earthquake Agency has built Tianjin Earthquake Early Warning System through this project. The system is composed of station technology system, central processing system and early warning information release system. The early warning information release system is an important part of the earthquake early warning system, and is also the key protection object of network security. At present, the release of Tianjin earthquake early warning information mainly adopts special early warning terminal, IPTV and other channels. The early warning information release system is based on MQTT. The release of early warning information depends on the Internet, and the end users who subscribe to early warning information through MQTT protocol are mostly zero trust users. This problem has become the biggest potential safety hazard endangering the early warning system. The project team proposed an MQTT dynamic access control model based on trust computing. This method realizes the safe release of earthquake warning information.