Invertible Proactive Secret Image Sharing
Feng Bi · Journal of Chinese Computer Systems · 2015
Proactive secret sharing is a secret sharing scheme,where secret shadows are periodically renewed under the premise of never changing the shared secret. However,in the most existing proactive secret sharing schemes,they can't be applied in secret image. In this paper,we proposed a proactive secret image scheme,which is applied in secret image. Meanwhile,our scheme is an invertible secret image sharing scheme based on( k,n)-threshold secret sharing system. So in our scheme,participants update their stego image periodically without changing the secret image. And any t out of n authorized participants can cooperate to get secret image and original cover image,but no group of k-1 can do so. The experiments shows that our scheme is successful.