Advanced Security for Visual Dataset Using Visual Cryptography and Steganography

Information Security

In the current technology world, data transmission of various multimedia like sensitive images, video, text is very important and security is major concern in the fields of medical, commercial and military fields. Security is very important, as illegal users may hack the sensitive data. Currently, many techniques are available for Visual data Security. In this proposed system, describes an approach to hide valuable secret information inside the different file formats without losing it by using Steganography and Visual Cryptography techniques.Visual Cryptography is a special kind of cryptographic scheme where the decryption of the encrypted secret is done by the human vision and not by complex mathematical calculations. Visual Cryptography deals with any secrets such as printed or pictures, etc. These secrets are fed into the system in a digital (image) form. The digital form of the secrets is then divided into different parts based on the pixel of the digital secret. These parts are called shares. The shares are then overlapped correctly to visualize the secret.In this method first of all we generate the stego image using cover image and secret data. After that stego image is divide into two shares. This two shares are divided into R,G,B channel and apply 2-level DWT. For scramble the secret data and provide better security we split data into 8*8 block and then apply inverse 2-level DWT and extract the original secret data. Secret data is hide into the frequency domain of the shares which restrict the various types of attacks and provide better security robustness.Experimental results show that the new scheme is simple and robust.

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