DNA Image Encryption Scheme Based on a Chaotic LSTM Pseudo-Random Number Generator

被引:5
|
作者
Koubaa, Karama [1 ]
Derbel, Nabil [1 ]
机构
[1] Univ Sfax, Natl Engn Sch Sfax, Control & Energy Management Lab CEMLab, BP 1173, Sfax 3038, Tunisia
来源
关键词
DNA coding; high-dimensional coupled chaotic maps; image encryption algorithm; long short-term memory; pseudo-random sequence; HYPERCHAOTIC SYSTEM; MAP;
D O I
10.1142/S0218127423500670
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Deoxyribonucleic Acid (DNA) coding technology is a new research field developed by the combination of computer science and molecular biology, that has been gradually applied in the field of image encryption in recent years. Furthermore, sensitivity to initial conditions, pseudo-random properties, and state ergodicity of coupled chaotic maps can help produce good pseudo-random number generators and meet the requirements of an image encryption system well. In this paper, an image encryption algorithm based on high-dimensional coupled chaotic maps and DNA coding is proposed. A pseudo-random sequence is generated by a long short-term memory (LSTM) architecture using the proposed maps and evaluated through a set of statistical tests to show the high performance of the proposed generator. All intensity values of an input image are converted to a binary sequence, which is scrambled globally by the high-dimensional coupled chaotic maps. The DNA operations are performed on the scrambled binary sequences instead of binary operations to increase the algorithm efficiency. Simulation results and performance analyses demonstrate that the proposed encryption scheme is extremely sensitive to small changes in secret keys, provides high security and can resist differential attack.
引用
收藏
页数:20
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