期刊名称：International Journal of Computer Science and Network Security
印刷版ISSN：1738-7906
出版年度：2019
卷号：19
期号：9
页码：49-56
出版社：International Journal of Computer Science and Network Security
摘要：This paper proposes a novel encryption scheme for digital images, which utilizes chaotic diffusion in spatial-domain and plaintext-related shuffling in frequency-domain based on a hyper chaos, where the initial values of the hyper chaos are served as keys to the encryption. In spatial-domain, the original digital image is diffused using chaotic XOR operation. After that, both phase and magnitude spectra of the cipher image are further encrypted using chaotic shuffling. The highest entropy and lowest correlation are achieved for the sample image in the proposed hybrid plaintext-related encryption, in which a huge key space of 6.5×1064 is created due to the multi-fold encryption algorithm. The high-level security of the proposed hybrid encryption is also verified with the capability against various attacks. In addition, the hybrid encryption scheme is optimized via the performance comparisons among the encryption procedures.
关键词：Transport security; digital image encryption; digital chaos; double-domain; plaintext-related algorithm.
