A new approach of image encryption using 3D chaotic map to enhance security of multimedia component

Multimedia data contains text, audio, video, graphic, images and with the increasing use of multimedia data over internet, here comes a demand of secure multimedia data. Image encryption differs from other multimedia components encryption due to some intrinsic features, such as bulk data capacity and high correlation among pixels the earlier encryption techniques such as AES, DES etc. are not suitable for practical applications. The combination of chaotic theory and cryptography forms an important field of information security. The latest trend in image encryption is chaos based for some unique characteristics such as the sensitivity to initial conditions, non-periodicity, non-convergence, and control parameters. There are a lot of image encryption algorithms based on chaotic maps have been proposed some of them are time consuming and complex some have little key space. In this paper we proposed a non-linier 3D chaos based simple encryption technique where for the first time 3D chaos is used for position permutation and value transformation technique. We get average entropy of encrypted image 7.99, NPCR of 99.6% and UACI of 33.5%. We tabulate correlation coefficient value both horizontal and vertical position for cipher and original image and compare performance of our method with some existing methods. We also discuss about different types of attack, key sensitivity, and key space of our proposed approach.