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A robust encryption scheme using RC4 And Arnold’s Chaotic Map

Recently, the internet becomes a worldwide source for transmission of information from one end to the other, whether it is video, audio, image, text, etc. Transferring images over the network is very risky, as any unauthorized person can do modifications to these images and may lead to big trouble. For secure transmission of these images over the internet with high security and confidentiality, it is necessary to convert the image into an unreadable format. To do this, there are various encryption techniques used for securing images. Amongst all the image encryption technique which is extensively used by researchers for secure and safe transmission of the image on the reliable network, RC4 and Arnold’s chaotic map are the techniques used for encryption of image. Our proposed paper aim is to represent a new encryption technique that combines RC4 algorithm and Arnold Chaotic map which is a chaotic map to propose a new algorithm and encrypt an image. The aim of using Rivest Cipher 4 algorithm is to enhance the confidentiality to encryption by generating key and Arnold Chaotic Map is used for confusion to change the image’s pixels. The efficiency of our proposed algorithm is evaluated using a Histogram analysis, Coefficient Analysis, and key Space Analysis. The achieved result of histogram analysis shows the same distribution trend of pixels before and after the encryption of an image. Further the proposed scheme is evaluated against various parameters (like NPCR, and entropy values) to check its resistance over differential attacks and the result shows values near to the ideal values.