Coverless Information Hiding Technology Research Based On News

With the rapid development of network and digital technologies,information security issues are being subjected to more severe and complicated challenges in the new situation.In general,people can use the public carriers such as text,images,videos,and audios to transfer secret information.However,the traditional information hiding technology will leave traces of modification to the carrier more or less in the hidden process,which leaves a great opportunity for attackers.In recent years,how to conceal the confidential information in the carrier,prevent the carrier from leaving a modification trail,and improve the security of information hiding,are hotspots in the field of information hiding.The coverless information hiding technology aims to transmit hidden information by searching for an open dense carrier,and establish a mapping relationship between the carrier information and the secret information according to the characteristics of the carrier,so as to solve the problem of that traditional information hiding technology is vulnerable to third party attack due to its carrier modification.Nowadays,news is increasingly popular on the Internet,and people can easily exchange information through it.Considering that there are few existing literatures on coverless information hiding,the realization of coverless information hiding based on news generating dense carriers has important application value and research significance.The main innovations of the paper are as follows:Aiming at the problem that the traditional text information hiding algorithm will leave modified tracks in the process of transmitting secret information in the text carrier,which makes it difficult to resist the detection of steganalysis tool,a novel coverless information hiding and extracting algorithm based on news publishing time is proposed.The algorithm effectively combines the characteristics of the coverless text information hiding technology and the news publishing time,and the idea of converting secret information into binary bit stream to slice and map it into news blocks,and finally achieve the purpose of information hiding on the news website.At the same time,the algorithm was verified and compared with related research work.Experimental results show that the algorithm can effectively resist the detection of the existing steganalysis algorithm,and improve the security and anti-detection ability of the hidden information to some extent.In order to further improve the hidden capacity of the news-based coverless information hiding algorithm,combined with the non-regular characteristics of headlines display order,a new coverless information hiding and extraction algorithm based on headlines with capacity improved is proposed.The algorithm,with the idea of converting the secret information into a large integer,effectively reduces the hidden bit redundancy of the news carrier on the basis of the previous chapter algorithm.At the same time,according to the number of news in the block,it continues to perform modular operations,and then map the results of modular operations into the order of news within the block,and successfully implementing coverless information hiding without modifying news carriers.Experimental results show that the algorithm can not only effectively improve the hidden capacity of news carriers,but also can effectively resist the detection of existing steganalysis algorithms.