期刊名称：International Journal of Computer Science & Information Technology (IJCSIT)
印刷版ISSN：0975-4660
电子版ISSN：0975-3826
出版年度：2017
卷号：9
期号：2
页码：53
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：An increasing demand of secure data transmission over internet leads to the challenge of implementing aconsistent cryptosystem. In 2004, USA navy published the patent which highlights the importance of fractalas an encryption/decryption key in a cryptosystem [1]. Fractal possess butterfly effect i.e. sensitivity toinitial condition, due to which small change in input produces a major change in output. This papersummarizes the various recent image encryption techniques in which fractal key is used to encrypt/decryptfollowed by substitution, scrambling and diffusion techniques to provide strong cryptosystem. Thealgorithms covered both private key encryption as well as public key encryption technique in the paper. Theanalysed algorithms include a set of fractal function such as Mandelbrot set, Julia set, Hilbert curve, 3Dfractal, multi-fractal, IFS and chaotic function to generate a complex key used in the encryption process.Corresponding performance of each algorithm is analysed by PSNR test, key space, sensitivity analysis andcorrelation coefficient value between the adjacent pixels of both images (Original image and encryptedimage) which shows significant improvement in performance over the traditional encryption methods.
关键词：Image Encryption; fractal; chaotic function; Scrambling; NIST test suite
