摘要

The traditional cryptographic techniques require decryption algorithm to decode the original information. This process requires computations and further increases cost of equipments making the technique inefficient. This paper briefly presents the visual cryptographic technique applied to image so that decryption can beperformed by human visual system, without any decryption algorithm. A visual cryptography scheme encodes a black %26 white secret image into n shadow images called shares which are distributed to the n participants. The VC scheme is based on the no. of the shares and participants. The paper projects a new matrices with different sharesand participants namely (3,6) %26 (4,4). The proposed scheme reduces the complexity by reducing the no. of shares with increased participants. This feature of the scheme improves the efficiency and makes the decoding system easy by printing out shadow images on transparencies and stacks them to visually reveal the secret image. The proposed scheme is developed using Matlab. The results are presented to validate the effectiveness of the proposed scheme.

  • 出版日期2010

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