Nowadays, with the development of Internet technology and the improvement of safety awareness, image encryption technique has become very important, especially for color image encryption. The direction of research is focused on the RGB color space. There are few researches in other color spaces, such as HSVL*a*b*, YCbCr. In this paper, we propose a color image encryption method in YCbCr color s...

In recent years, the chaos based cryptographic algorithms have suggested some new and efficient ways to develop secure image encryption techniques. In this paper, we propose a novel method to encrypt a gray image based on Arnold transform and Kent mapping. It is a digital medical image encryption algorithm, dual scrambling that based on chaos of pixel position and pixel values. The results of e...

In this paper, after reviewing the main points of image encryption and threshold function, we introduce the methods of chaotic image encryption based on pseudorandom bit padding that the bits be generated by the novel generalized threshold function (segmentation and selfsimilarity) methods. These methods decrease periodic effect of the ergodic dynamical systems in randomness of the chaotic imag...

It describes an improved encryption algorithm of a three-dimensional image based on multiple chaotic systems. The algorithm uses a variety of chaotic encryption system to cut the image into three-dimensional matrix systems, in three-dimensional space do the image scrambling transformation, three-dimensional chaotic sequence output by multiple chaotic systems achieved three color pixel substitut...

According to the existing problems like that the algorithm is very complex, the quantity of operation is large and safety is not advanced in the present digital image encryption, this study has put forward a new chaotic system based on Logistic generation and transformation to realize the sequence image encryption, the algorithm gave the traditional chaotic series a new purpose. It used two kin...

Steganography, water marking and encryption are widely used in image processing and communication. A general practice is to use them independently or in combination of two for e.g. data hiding with encryption or steganography alone. This paper aims to combine the features of watermarking, image encryption as well as image steganography to provide reliable and secure data transmission .The basic...