The Comparative Study on Visual Cryptography and Random Grid Cryptography

Visual cryptography scheme is a cryptographic technique which allows visual information to be encrypted into several shares in such a way that the decryption can be performed by the human visual system, without the aid of computers. Random grid is a methodology to construct Visual Secret Sharing (VSS) scheme without pixel expansion in which an RG scheme takes an input image and transforms it into multiple cipher-grids that provide no information on the original image and the resulting decrypted image retains the size of the original image.

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