A large amount of achievements have been accumulated in steganalysis and steganography community for the past few decades.Nevertheless

the application of information hiding is restricted to research in laboratory

focusing on the confrontation between steganography and steganalysis

which has a huge distance from real world.Inspired by the cryptography

we establish a novel information hiding system whose algorithms are changeable and modification modes are under control based on investigation of previous work.We construct a huge multi-modal information hiding space with multiple algorithms and modification modes.Moreover

we build the mapping method between steganography methods and keys to implement the reconstruction mechanism of generating information hiding process when giving a key.There is no doubt that information hiding research scope will be expanded and vitality will be integrated.Experimental results and theoretic analysis have shown that the proposed system is effective and security.