Research on information steganography based on network data stream

To protect the information from being intercepted by third parties during the network communication process, this paper proposes a new type of data steganography technology based on network data flow. Using the network protocol itself and the relationship between data packets in the entire network data stream to perform network data steganography, transfer hidden data, and perform secondary identity authentication. Different from the traditional steganography method, this method can encode the hidden data and send the interval value by embedding the data packet, thereby hiding and transmitting the hidden data. In this technology, the operation of hidden data does not affect the user's access request for real network data, and it can perform processes such as hidden data transfer and secondary authentication without the user being able to detect it. Through experimental verification and evaluation, our method improves the concealment of the steganographic channel, is not easy to attract attention and has no obvious statistical characteristics of the traffic, and can improve the concealment and robustness of the steganography technology based on network data streams.