General Io T Security System Framework Based On MQTT

With the development of sensor,network,communication and computer technology,Internet of things technology is becoming more and more mature and widely used.Many new technologies have been proposed and applied to the Internet of things.But at the same time,in the process of the development and application of Internet of things technology,there are also some new problems: it is very complex to build an Internet of things system with many new technologies,and the security of the Internet of things system is also facing severe challenges.In this context,this paper decided to design a general framework of Internet of things security system based on "ruoyi" management system,which can more quickly build a complete Internet of things system.Firstly,the communication protocols commonly used in the Internet of things are analyzed and compared,and the MQTT communication protocol is adopted;Through the analysis of the message content uploaded and received by the Internet of things devices,the message content is abstractly expressed.After the message content is abstracted,a unified database template is established to store and interact with the front page,so as to realize the general monitoring and management of Internet of things devices.It solves the universal problems of Internet of things device access,information transmission and information storage.Secondly,by studying the security communication scheme of mqtt in the existing IOT system,this paper analyzes the efficiency and security problems existing in the information interaction,and proposes a general IOT communication security design scheme(named GtxMQTT)based on mqtt protocol and considering efficiency and security,which solves the communication security and efficiency problems of cloud on IOT devices.Thirdly,in order to reduce the development and deployment of back-end program,a general back-end management system is designed,and data table is designed in the front-end Web interface,and API interface and online interface documents with authority authentication are generated dynamically,which can avoid the back-end development of the system to a certain extent.Finally,this paper uses the above solutions,combined with embedded technology and front-end and back-end technology to design a general security system framework of Internet of things.After testing,the application of the framework can more quickly build some small and medium-sized Internet of things,and the information processing speed is faster when mqtt information is transferred between the device side and the server.