Design And Implementation Of Covert Communication System Based On Random Data Stream

With the development of network and computer technology,the emergence of big data,distributed computing and quantum computer makes the confidential communication of information face new challenges.In recent years,how to ensure information security through information hiding technology has become a hot spot in the field of information security.Based on this background,this research proposes a covert communication system based on 2 major branch technology theory:Steganography and Covert Channelsin the information hiding discipline.This system builds a system that can continuously send invalid data,by hiding the plaintext information in the form of data stream,the hiding capacity of information hiding system is effectively increased,and the security and real-time performance of covert communication are improved,it increases the time cost and computational cost of attackers stealing and cracking hidden information.In the process of research and development,this paper focuses on the theoretical knowledge of covert communication,cryptographic algorithm and TCP data flow.This design establishes the idea of modular design,focusing on the generation of random data stream,the encryption and decryption of files,and the embedded sending of plaintext.It completes the functional design of the core modules such as the generation of random data stream,the communication between the receiver and the sender,the encryption and decryption of AES,the chaotic encryption and decryption of logistic mapping system,and the sending and receiving of files.At the same time,the application program based on Windows is designed and developed.The program realizes the functions of file encryption transmission and status display,and can adjust the bandwidth of data stream,which is convenient for users to manage and control data stream in different hardware environments.By testing the system software and analyzing the data,it is proved that the system can realize the covert communication between the sender and the receiver,and the bandwidth of the data stream is adjustable,the software has ideal performance and has strong practical value...