Image Encryption Based on Chaotic Map and DNA Coding

In order to obtain chaos with a wider chaotic scope and better chaotic behavior, this paper combines the several existing one-dimensional chaos and forms a new one-dimensional chaotic map by using a modular operation which is named by LLS system and abbreviated as LLSS. To get a better encryption effect, a new image encryption method based on double chaos and DNA coding technology is proposed in this paper. A new one-dimensional chaotic map is combined with a hyperchaotic Qi system to encrypt by using DNA coding. The first stage involves three rounds of scrambling; a diffusion algorithm is applied to the plaintext image, and then the intermediate ciphertext image is partitioned. The final encrypted image is formed by using DNA operation. Experimental simulation and security analysis show that this algorithm increases the key space, has high sensitivity, and can resist several common attacks. At the same time, the algorithm in this paper can reduce the correlation between adjacent pixels, making it close to 0, and increase the information entropy, making it close to the ideal value and achieving a good encryption effect.

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Image Encryption Algorithm Based on Substitution Principle and Shuffling Scheme

Engineering and Technology Journal ◽

10.30684/etj.v38i3b.433 ◽

2020 ◽

Vol 38 (3B) ◽

pp. 98-103

Author(s):

Atyaf S. Hamad ◽

Alaa K. Farhan

Keyword(s):

Image Encryption ◽

Chaotic Map ◽

Logistic Map ◽

Encryption Algorithm ◽

Second Phase ◽

Cipher Text ◽

The Face ◽

Substitution Principle ◽

2D Logistic Map ◽

Image Encryption Algorithm

This research presents a method of image encryption that has been designed based on the algorithm of complete shuffling, transformation of substitution box, and predicated image crypto-system. This proposed algorithm presents extra confusion in the first phase because of including an S-box based on using substitution by AES algorithm in encryption and its inverse in Decryption. In the second phase, shifting and rotation were used based on secrete key in each channel depending on the result from the chaotic map, 2D logistic map and the output was processed and used for the encryption algorithm. It is known from earlier studies that simple encryption of images based on the scheme of shuffling is insecure in the face of chosen cipher text attacks. Later, an extended algorithm has been projected. This algorithm performs well against chosen cipher text attacks. In addition, the proposed approach was analyzed for NPCR, UACI (Unified Average Changing Intensity), and Entropy analysis for determining its strength.

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A New Image Encryption Scheme Using Dual Chaotic Map Synchronization

The International Arab Journal of Information Technology ◽

10.34028/iajit/18/1/11 ◽

2020 ◽

Vol 18 (1) ◽

Keyword(s):

Image Encryption ◽

Chaotic Systems ◽

Initial Conditions ◽

Chaotic Map ◽

Security Applications ◽

The Common ◽

And Diffusion ◽

Confusion And Diffusion ◽

Sensitivity To Initial Conditions ◽

Diffusion Properties

Chaotic systems behavior attracts many researchers in the field of image encryption. The major advantage of using chaos as the basis for developing a crypto-system is due to its sensitivity to initial conditions and parameter tunning as well as the random-like behavior which resembles the main ingredients of a good cipher namely the confusion and diffusion properties. In this article, we present a new scheme based on the synchronization of dual chaotic systems namely Lorenz and Chen chaotic systems and prove that those chaotic maps can be completely synchronized with other under suitable conditions and specific parameters that make a new addition to the chaotic based encryption systems. This addition provides a master-slave configuration that is utilized to construct the proposed dual synchronized chaos-based cipher scheme. The common security analyses are performed to validate the effectiveness of the proposed scheme. Based on all experiments and analyses, we can conclude that this scheme is secure, efficient, robust, reliable, and can be directly applied successfully for many practical security applications in insecure network channels such as the Internet

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A novel image encryption scheme based on multi-directional diffusion technique and integrated chaotic map

Neural Computing and Applications ◽

10.1007/s00521-021-06077-5 ◽

2021 ◽

Author(s):

Milad Riyahi ◽

Marjan Kuchaki Rafsanjani ◽

Rouzbeh Motevalli

Keyword(s):

Image Encryption ◽

Chaotic Map ◽

Encryption Scheme ◽

Directional Diffusion ◽

Diffusion Technique

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Non-Linear Hopped Chaos Parameters-Based Image Encryption Algorithm Using Histogram Equalization

Entropy ◽

10.3390/e23050535 ◽

2021 ◽

Vol 23 (5) ◽

pp. 535

Author(s):

Karim H. Moussa ◽

Ahmed I. El Naggary ◽

Heba G. Mohamed

Keyword(s):

Image Encryption ◽

Initial Conditions ◽

Signal To Noise Ratio ◽

Chaotic Map ◽

Histogram Equalization ◽

Encryption Algorithm ◽

Multimedia Contents ◽

Encryption Schemes ◽

Change Intensity ◽

Increasing Demand

Multimedia wireless communications have rapidly developed over the years. Accordingly, an increasing demand for more secured media transmission is required to protect multimedia contents. Image encryption schemes have been proposed over the years, but the most secure and reliable schemes are those based on chaotic maps, due to the intrinsic features in such kinds of multimedia contents regarding the pixels’ high correlation and data handling capabilities. The novel proposed encryption algorithm introduced in this article is based on a 3D hopping chaotic map instead of fixed chaotic logistic maps. The non-linearity behavior of the proposed algorithm, in terms of both position permutation and value transformation, results in a more secured encryption algorithm due to its non-convergence, non-periodicity, and sensitivity to the applied initial conditions. Several statistical and analytical tests such as entropy, correlation, key sensitivity, key space, peak signal-to-noise ratio, noise attacks, number of pixels changing rate (NPCR), unified average change intensity randomness (UACI), and others tests were applied to measure the strength of the proposed encryption scheme. The obtained results prove that the proposed scheme is very robust against different cryptography attacks compared to similar encryption schemes.

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