نویسندگان
1 دانشگاه آزاد اسلامی واحدتهران مرکزی، دکترای برق
2 دانشگاه آزاداسلامی واحدتهران مرکزی، دکترای برق
3 دانشگاه آزاداسلامی واحدتهران مرکزی، کارشناسی ارشد
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
In this paper, a novel image encryption algorithm based on quantum chaotic map, nearest-neighboring coupled-map lattices (NCML) and permutation- diffusion architecture is proposed. First, keystream generated by quantum chaotic map is used to permute the pixels of R, G and B components at the same time and make the three components affect one other. Next, perform the random circular shift operation to the result of the permuted pixels to rearrange bits of each pixel. Finally, the new algorithm employs keystreams generated by the nearest-neighboring coupled-map lattices to diffuse the relationship between the cipher-image and the plain-image. In order to generate the initial conditions and parameters of the chaotic maps, 128-bit long external secret key is used. The image encryption is performed with just one iteration; in some of the methods, obtaining the appropriate values for tests requires a number of iterations. This means that the proposed method is faster than other encryption processes. The results of several experimental analyses about randomness, sensitivity and correlation of the cipher-images show that the proposed algorithm has high security level and high sensitivity which can be adopted for network security and secure communications.
کلیدواژهها [English]
)