Research On Text Coverless Information Hiding Methods Based On Searching

In recent years,coverless information hiding has rapidly become a research hot spot in the field of information security due to its advantages of anti-detection and anti-attack.Different from the traditional information hiding methods,the coverless information hiding method is driven by secret information.The nature carrier is selected to hide the information.The method does not need to modify the carrier,so it can effectively resist attacks of various steganalysis algorithms.Among the various digital carriers,text is the most basic communication medium,and it is the most important channel for humans to obtain information.Therefore,this paper mainly focus on coverless information hiding based on text.Aiming at the problems of low hiding capacity and low success rate for the existing text coverless information hiding method,this paper proposes a text coverless information hiding method based on Word2 Vec.The method employs Chinese components as location tags,and uses Word2 Vec to augment secret keywords set.Information hiding can be achieved by simply searching for natural text that contains a combination of “locaiton tags +keywords”.The experimental results show that the method can guarantee a hidden success rate close to 100%,and the average hiding capacity is 2.87.In addition,this paper proposes a coverless information hiding method based on web text by analyzing the characteristics of web text big data.Firstly,the set of web pages related to the secret information is captured,and the web text library is constructed after processing.Secondly,the stego-text set is retrieved in the web text library,and the optimal web text is selected as the secret text.Finally,the location of the secret information is described,and the URL and location information are combined into a secret URL and sent to the recipient.The experimental results show that the average hiding capacity of the method is 10.53,which significantly increases the hiding capacity,and the hiding success rate is relatively stable.