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Image Steganography based Cryptography

The privacy and security of data is of utmost importance to individuals whose critical data can be leaked out and used for illegal purposes. The data needs to be secure and precautions needs to be taken whenever it gets transmitted from one place to another. In the preceding years, chaotic systems are erratic but definite in nature. The data encrypted using this system is so sensitive, that, changes in one of the coordinate positions leads to data being encrypted in other coordinate positions. So the proposed paper involves an image encryption algorithm, it uses a secret key from Lorenz chaotic system. It’s a network consisting of weights with which the Y channel of the plain image is XORed with and the cipher image will be formed. These weights are unique and are non-identical to each other. The results have proved that the decrypted plain image has a similarity index of 0.96 to the original plain image.