A(3,3) visual cryptography scheme for authentication
Xu Chen · Journal of Shenyang Normal University · 2013
The visual cryptography is a secret sharing technique,for which the secret can be decoded directly by human visual system without any cryptography knowledge.This technique splits a secret image into n shares in such a way that the stacking of any k shares can reveal the secret image but any less than k shares should provide no information.In this paper,a(3,3) visual cryptography scheme has been proposed which may be used for the trusted third party to verify the two other participants.This scheme involves two validation images and a secret image.The validation images are used to verify the participants.The secret image is split into three shares.One of the shares is hold by the trusted third party and the other by the two participants.The trusted third party stacks his/her share with the share of the two other participants respectively and the two different images for participant authentication will be revealed.Experiments show the effectiveness of the proposed(3,3) visual cryptography scheme.