Research and implementation of information hiding based on RSA and HVS

To better protect the security of information, this paper proposed an information transmission scheme which combined the cryptosystem and information hiding. The scheme pretreated the information firstly by making use of the RSA arithmetic which belongs to the public key cryptosystem, and then took advantage of the improved LSB which based on the Human Visual System to make the cryptograph hid in the 24 bits BMP image and transmitted it. The embedding and extracting process of secret information in the scheme were discussed in detail. Also, the result of information hiding achieved by this scheme was given. The principle of the scheme is simple, and it is easy to implement. The experimental result suggests that the scheme is efficient and has good practical value.