International Journal of Computer Applications
Visual cryptography and random grids are forms of visual secret sharing that encrypt a secret image into indecipherable shares. Decryption occurs by printing them onto transparencies and stacking, but this requires participants to be in the physical presence of each other, so this paper addresses the use of visual secret sharing between remote, incommunicado agents. To this end, a prototype application has been developed to form a sub-pixel matrix of a photographed share that is one half of a (2, 2) scheme. It is algorithmically \"Stacked\" with its stored complement to decrypt the secret.