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This paper is to provide knowledge of safety of images which is traveling over internet. Moreover, an image-based data requires more effort during encryption and decryption. In this paper, the authors present some advantages and disadvantages of existing algorithm for encryption and decryption of an image with the same objective. Moreover, they are also doing analysis of entropy and correlation between pixels value of various image encryption algorithm. From the analysis they are observing that which one is the best approach to calculate these things. Finally, it sums up with thoughts and suggestions about information security, along with a chosen example of the current proposals in security.
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