Secret sharing scheme with reversing

Visual cryptography is a new paradigm to encode a secret image into multiple shares of images. It relies on decoding of image directly through the human eyes by stacking the shares, thus require minimal overhead for reconstruction of image. The secret sharing scheme can be considered as a basis for secure key management. In some situations, it may be possible that key becomes unavailable due to some reason, thus revealing of secret is much more difficult. In this paper, we propose a probabilistic (2, 2) visual secret sharing (VSS) scheme for binary images. The scheme relies on random generation of matrices with reversing to generate secrets. The experimental results shows that the scheme has satisfactory contrast, less prone to security attacks along with reasonable computation time.