Image encryption under spatial domain based on modify 2D LSCM chaotic map via dynamic substitution-permutation network

Rana Saad Mohammed, Khalid Kadhim Jabbar, Hussien Abid Hilal


Image encryption has become an important application aspect of information security, which has occupied many researchers to find new and innovative methodology methods in this field. Most attempts are focused on increasing the security aspect, the quality of the resulting image, and the time consumed. On the other hand, dealing with the color image under the spatial domain in this filed is considered as another challenge added to the proposed method that make it sensitivity and difficulty due to the image texture that different from one image to another. The proposed method aims to encode a color image by dealing with the main color components of the Red (R), Green (G), and Blue (B) components of a color image in parallel after dividing the image into four blocks and mixing them to strengthen the dependence of each component by modifying a two dimensional Logistic- Sine Coupling map (2D- LSCM) under spatial domain to create a dynamic substitution- permutation network to satisfy the statistical features and reduce time consumption, and also benefit from a mixing step of the second of Advanced Encryption Standard (AES) candidates (Serpent block cipher) and modified it to achieve in addition of confusion and diffusion processes. The experimental results showed that our proposed method had the ability to resist against statistical attacks and differential attacks. And also it had a uniform histogram, a large key space, complex and faster, closer Shannon entropy to 8, and low correlation values between two adjacent pixels compared with other methods.


block cipher; confusion-diffusion; logistic- sine coupling map; random chaotic map; S-box; substitution-permutation;

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International Journal of Electrical and Computer Engineering (IJECE)
p-ISSN 2088-8708, e-ISSN 2722-2578