Design Of Superior Colour Image Cryptosystem Using Chaotic Maps and Mathematical Transforms

Abstract

This paper presents an improved encryption algorithm for colour images based on chaotic system. First, the chaotic sequences generated by chaotic system, using encryption system randomly generated a set of keys, and then using the keys to scramble the image pixel position and pixel values, which is a good way to avoid the key sequence unchanged of the HIE encryption. To against attack, the algorithm encrypted in a way of one time one keys. In addition, the paper diffused encrypted three colour components RGB of a picture to avoid the drawbacks of breaking one of the components can know the all plaintext messages. Experimental results show that the proposed algorithm has good encryption and anti-jamming performance. Data transfer has become an integral part of our lives in the digital age and is increasing at an enormous pace. However, over public network like internet is susceptible to various online threats, including identity theft, infections, or attacks. So, it is extremely important to ensure the security and integrity of our data, whether it is in the form of a simple text, colour image file.  Research paper on cryptosystems for colour image encryption, compression models using mathematical transforms use of chaotic colour image. The proposed cryptosystems use affine and Arnold transforms as scrambling techniques to introduce chaos in the images, whereas random decomposition and decomposition are used for matrix factorization. Decomposition are proposed in the subsequent paper these schemes are the generalizations of the colour image encryption schemes to encrypt colour image files. To analyse the efficacy, strength and robustness of the proposed systems, key sensitivity, histogram and colour image analysis, noise, occlusion and special attack analysis have been performed"