RSA scheme with MRF and ECC for data encryption

The security of multimedia over network transmission has recently attracted a lot of research. This paper combines schemes of cryptography with steganography for hiding secret messages. Given secret messages, for example, an English sentence, our scheme first converts the messages to an M/spl times/N binary image which is then covered by a binary random texture synthesized from a 2D Ising Markov random field using the seed, a shared secret key, between the sender and the receiver, generated by the strategy of elliptic curve cryptography (ECC). The concealed messages are then encrypted, based on the RSA scheme for transmission. An experiment shows that using an unauthorized key gets messages totally different from the original ones even when the error key is very close to the authorized one.