Image Encryption Using Random Scrambling And XOR Operation
Rinki Pakshwar2013, International journal of engineering research and technology
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Abstract
This paper aims at improving the level of security and secrecy provided by the digital gray scale image encryption. The image encryption and decryption algorithm is designed and implemented to provide confidentiality and security in transmission of the image based data as well as in storage. Since the pixel of image is highly correlated to their neighboring pixels. Due to this strong correlation any pixel can be practically predicted from a value of its neighbors. So there is a need of a technique that can shuffle the pixels to reduce the correlation between the neighbor pixels. Hence we used Scrambling technique that Shuffles the pixels of image .This Scrambled image is called transformed image. The transformed image then divided into 2 pixels x 2 pixels blocks and each block is encrypted using XOR operation by four 8-bit keys. The total size of key in our algorithm is 32 bit long which proves to be strong enough. The proposed encryption algorithm in this study has been tested on some Gray Scale images and showed good results.
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This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
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