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I am working on an image encryption and decryption project with 3 levels of security. The latter levels of security involve false image addition and cryptographical enhancement. I am looking for encryption on the first level of security. Can you suggest an algorithm in which I can mask the image on the encryption side and the same image has to be got back(after removing the mask) on the decryption side.

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Perhaps you should be more precise about what you have and what you want. masking and decryption is very large. I think what you search for is steganography


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