Sharing secret images using keyed information hiding technique

Sharing secret through the Internet is very popular nowadays. Traditional meaningless sharing images may attract attackers' attentions. If an attacker can collect enough shares, he/she can overlap the intercepted images and reveal the secret. In this paper, we propose a new secret image sharing method to improve this situation. The secret image is first transformed into two meaningful sharing images depending on a cover image and a predefined secret codebook. The secret image can be reconstructed by using the secret codebook. Experimental results show that two meaningful sharing images can be effectively created using the proposed sharing images creation process and the original secret image can be reconstructed according to the proposed secret image reconstruction process.