Design And Implementation Of Multi-carrier Hidden System In Mobile Device

With the current rapid development of mobile Internet networks and the widespread popularity of smart devices,mobile phones have gradually become an important window for people to communicate on the Internet,and a large number of sensitive data and information security issues have arisen in mobile devices.In the face of these potential risks such as data information leakage and theft,how to ensure the information security of personal-related sensitive data is an urgent issue that needs to be resolved.In normal applications,confidentiality is directly based on cryptographic technology and direct encryption.However,in this case,there is still a risk of exposure.Therefore,it is not only necessary to protect data and information from leakage,but also to protect confidentiality from being recognized.The steganography technology in information hiding is an important way of covert communication and covert storage,which can protect the secret behavior while protecting data information,and improve the security in the process of confidential data information.This article combines the steganography technology in information hiding in protecting the information security of mobile devices.Based on the background of instant messaging in the mobile Internet,this paper conducts research on the protection of data and information and the security issues in the transmission process,aiming to solve the sensitive issues on mobile devices.Issues such as the leakage and theft of data information.The secret system research content discussed in the paper is as follows:This article first analyzes the risk of information leakage in mobile devices,and uses steganography in information hiding to research and design a hidden system.Then analyze the functional requirements of the hidden system of mobile devices,including the analysis of the steganographic functional requirements,the analysis of other functional requirements,and the analysis of non-functional requirements.The system is divided into steganographic modules,user management,friend management,instant messaging,Multimedia processing module and other functional modules.Then,on the basis of the analysis of system requirements,a design framework for the secret system client was proposed,and the secret system was explained one by one from the perspectives of various functional module design,system data structure design,database design and system security design,and adopted Each functional module is designed in UML in detail,and the system is finally implemented on the Android platform.Finally,the client software of the system was deployed and tested,and the system was tested in terms of test content,test methods,and test functions.In the process of system testing,the system software runs stably,and the steganography function achieves the purpose of protecting data and information from leakage on the mobile terminal through information hiding,and other system functions on the mobile terminal meet the requirements of the design goals.