Research On Information Hiding Method Based On SVD Decomposition Technology

With the popularity of the Internet and gradually accelerate the computer operation speed,encryption technology has been unable to ensure the safety of information transmission because of computer operation speed.What's more,information hiding technology can effectively enhance the security of information transmission by disguising the secret information.Therefore,the information hiding technology has been developed faster than before.Nowadays,it is vital to ensure data security,and information hiding technology is used to prevent secret information from being attacked by illegal molecules.It determines the imperfection of information hiding technology that information hiding technology involves a wide range of technology.Therefore,many technical problems are still to be solved.In order to effectively protect the safety of the transmission of secret information,the existed information hiding scheme algorithms,such as watermarking algorithm based on DCT-SVD,which is a watermarking algorithm based on image,and encryption algorithm and hidden fusion algorithm constitute the watermarking algorithm;according to the difference of human eye sensitivity,the concealment of secret information is improved.These two kinds of information embedding algorithms improve the traditional hiding algorithm.And there are still some defects in some aspects: on the basis of high embedded capacity,concealment will be reduced;while the invisibility of information hiding is improved,its robustness is ignored.In this paper,in response to the above problems,we propose the image information hiding algorithm based on SVD(Singularly Valuable Decomposition)by using the Singular Value Decomposition technique to information hiding processing module.Double barriers protect the security of information transmission.Firstly,the preprocessing module is added for information to be hidden.Its main function is to encrypt and compress information to be hidden into ciphertext so as to increasing the amount of information embedded and to enhancing its security.Secondly,the optimal embedding position in the carrier image is found by SVD decomposition technique before the ciphertext is embedded in the optimal embedding position.In this paper,the concealment of information hiding is improved by the compression of embedded information and the selection of a more concealed embedding position.The experimental results show that the algorithm achieves the purpose of improving the security of secret information transmission and the embedding amount.