Cryptanalyzing a novel image fusion encryption algorithm based on DNA sequence operation and hyper-chaotic system

被引：63

作者：

Zhang, Yushu ^{[1
]}

Wen, Wenying ^{[2
]}

Su, Moting ^{[3
]}

Li, Ming ^{[1
]}

机构：

[1] Chongqing Univ, Sch Comp Sci, Chongqing 400044, Peoples R China

[2] Jiangxi Univ Finance & Econ, Sch Informat Technol, Nanchang 330013, Peoples R China

[3] Chongqing Univ, Sch Econ & Business Adm, Chongqing 400044, Peoples R China

来源：

OPTIK | 2014年 / 125卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Cryptanalysis; DNA coding; Hyper-chaotic system; Chosen plaintext attack; ONLY MULTIMEDIA CIPHERS; QUANTITATIVE CRYPTANALYSIS; PLAINTEXT ATTACKS;

D O I：

10.1016/j.ijleo.2013.09.018

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Recently, an image fusion encryption algorithm [Optik 124 (18) (2013) 3596-3600] was proposed based on DNA sequence operation and hyper-chaotic system. The security of this algorithm depends mainly on both five keys as the initial conditions of hyper-chaotic system and a key image. In this paper, we cryptanalyze the algorithm and find that two chaotic keystream determined by the five keys keep unchanged for different image encryption processes. The two chaotic keystream can be revealed and the computational complexity is approximately O(mn), where m and n represent the height and width, respectively. In addition, the key image needs to be changed for each encryption. Finally, experimental results also verify our idea. 2013 Elsevier GmbH. All rights reserved.

引用

页码：1562 / 1564

页数：3

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