期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2012
卷号：3
期号：4
页码：4806-4808
出版社：TechScience Publications
摘要：We propose an algorithm that will allow encryption of image data. Traditional symmetric ciphers such as Advanced Encryption Standard (AES) are designed with good confusion and diffusion properties. These two properties can also be found in chaotic systems which have desirable properties. Our algorithm uses chaotic maps. Chaotic maps demonstrate great potential for information security, especially image encryption. Chaotic output signals, which present random statistical properties, are used for both confusion and diffusion operations in a cryptosystem. The system uses combinational permutation techniques that divides the image into blocks, and then shuffles their positions before passing them to the bit manipulation stage. At bit manipulation stage the system will modify individual pixel values using an encryption key. A chaotic map will be used to perform permutation i.e. diffusion on each of the pixel value. As chaotic map is applied all the pixel position will be scattered. During bit level manipulation the bits for each pixel are permuted to achieve diffusion at bit level.
