Research On Information Hiding Techniques Based On The DVB-S2 Protocol

With the continuous development of satellite communication technology,the application of two-way broadband multimedia satellite communication technology is becoming more and more common.This provides a large number of hidden channels for concealed information transmission.Information hiding technology has been very mature in the research of terrestrial network protocol,but there are still few researches on satellite network communication protocol.In recent years,the combination of satellite communication and the Internet has shown a trend of integration of satellite network and integrated media,which puts forward higher requirements for the security of important data transmission based on satellite communication network.Therefore,the research of information hiding technology for satellite communication network protocol has very important theoretical and practical significance.In this paper,the concept of information hiding based on forward channel protocol DVB-S2 based on bidirectional broadband multimedia satellite communication is proposed,and the feasibility of information hiding based on this protocol is analyzed.Three information hiding algorithms are designed and simulated.The specific research contents and main achievements include the following four aspects:(1)A detailed analysis of the DVB-S2 protocol and its various functional modules,given the feasibility of information hiding based on the agreement gives a positive conclusion.And in the pattern adaptation module to find the information can be hidden in the redundant space.(2)The information hiding algorithm based on MATYPE field is proposed,and the information hiding algorithm is realized on the basis of DVB-S2 protocol simulation framework.Through the analysis of experimental data,the advantages and disadvantages of the algorithm are pointed out.(3)In order to improve the imperceptibility of information hiding capacity and hidden algorithm,based on the DVB-S2 protocol simulation framework,this paper designs a second information hiding algorithm,based on the information hiding algorithm of SYNC-BYTE field.The performance of the algorithm is verified by experiments.(4)In order to improve the imperceptible type of hidden algorithm,this paper proposes a third information hiding algorithm,which is based on the information hiding algorithm of DATA FIELE domain in this protocol.And the algorithm is implemented on the basis of protocol simulation framework.