Strong Tamper-Localization, Visual Secret Sharing Scheme Based on Exploiting Modification Direction

Recently, protecting information that is shared or transmitted over the Internet has become a critical issue. Several ways to transfer secret data have been proposed, including visual secret sharing (VSS), which is an efficient technique because the secret data are kept by a group of participants, rather than one person, so that they cannot be lost. In this paper, we proposed a new, visual, secret-sharing method with high quality shadows by smartly employing a steganography method, called Exploiting Modification Direction (EMD), during share construction. In addition, the scheme can detect if any tampering has occurred on the shadow. Our experimental results show that the scheme is efficient and secure.