Multi secret Sharing Based on Hill Cipher and Blakley Secret Sharing

This paper presents multi secret sharing scheme using Hill cipher and Blakley secret sharing. The proposed scheme can reconstruct k- secret images with only or more of shadow images. The proposed scheme is compared with other related visual secret sharing schemes for gray scale images with a (n, n)- threshold. The proposed scheme decreases the threshold to (k, n) compared to the other work. Also, the proposed scheme shares more than one secret using Hill Cipher algorithm without depending on random grid as a share image used in another work scheme. Using Hill Cipher and Blakley to share more than secret image increases the security of secret images with lossless image recovery and no pixel expansion. Experimental results demonstrate the efficiency of the scheme.