  In this paper a secret message/image transmission technique has been proposed
through (2, 2) visual cryptographic share which is non-interpretable in
general. A binary image is taken as cover image and authenticating
message/image has been fabricated into it through a hash function where two
bits in each pixel within four bits from LSB of the pixel is embedded and as a
result it converts the binary image to gray scale one. (2,2) visual
cryptographic shares are generated from this converted gray scale image. During
decoding shares are combined to regenerate the authenticated image from where
the secret message/image is obtained through the same hash function along with
reduction of noise. Noise reduction is also done on regenerated authenticated
image to regenerate original cover image at destination.
