Fault-Tolerant Visual Secret Sharing Scheme Using Meaningful Shares

Abstract

Security problem is becoming increasingly crucial in many fields. In order to ensure that secret images are not being stolen during information transmission, a preferred way is to encrypt them before transmission. Visual secret sharing scheme (VSSS) is a scheme of secure communication technology in which a secret image is encrypted into some shares and then restored through human vision by stacking shares directly. A fault-tolerant VSSS is a VSSS which is not necessary to align the shares precisely when recovering the secret image. In the other side, encrypting a secret image into two meaningless shares might invite the attacker's attention. Therefore, this paper proposed two fault- tolerant VSSS which encrypt one secret image into two meaningful shares, and with the fault-tolerant mechanism.