Digital Image Encryption Based On Multiple Chaotic Maps

2016

Noora Shihab Ahmed Collage of Science, Department of Computer Science, Halabja University Halabja, Kurdistan, Iraq [email protected] Abstract-The key stream generator is the key design issue of an encryption system. In this work presents an n-array three key stream generators (KSI, KSII and KSIII), Based on permutation of three chaotic maps (Logistic map, Kent map and tent map). This work reviews of some image encryption algorithm and finally investigate three methods for image encryption. First algorithm is encryption of original image by using KSI system. Second algorithm relies on KSII system to randomly generate two sequences of numbers by means of selecting proper factors along with seed value. Afterwards, the randomly produced numbers are employed to permute the image by means of shuffling its rows, columns and pixels sequentially in a manner by which first sequence is utilized to shuffle rows while second sequence is utilized to shuffle columns. Afterwards masking pro...

Journal of Imaging

Secure image transmission is one of the most challenging problems in the age of communication technology. Millions of people use and transfer images for either personal or commercial purposes over the internet. One way of achieving secure image transmission over the network is encryption techniques that convert the original image into a non-understandable or scrambled form, called a cipher image, so that even if the attacker gets access to the cipher they would not be able to retrieve the original image. In this study, chaos-based image encryption and block cipher techniques are implemented and analyzed for image encryption. Arnold cat map in combination with a logistic map are used as native chaotic and hybrid chaotic approaches respectively whereas advanced encryption standard (AES) is used as a block cipher approach. The chaotic and AES methods are applied to encrypt images and are subjected to measures of different performance parameters such as peak signal to noise ratio (PSNR)...

ICCKE 2013, 2013

We are living in the world in which most people and organizations communicate via digital devices so that a large quantity of information is electronically saved. In this condition, it's readily possible to access sensitive organizational and personal information. There is no doubt that of digital data, multimedia data carry heavy information load. This paper attempts to provide an efficient method for encryption digital image using logistic and Tent map in order to protect digital images in cyber space. In order to assess the performance of our method, it was implemented in Matlab.

Scientia Iranica

This paper proposes a new symmetric cryptographic system using chaotic systems. The basic idea is that a random strand is generated from chaotic functions. The developed random strand is merged with the strand obtained from the original image. The researcher used tables called multiple encryption tables in the composition of these strands. These tables are produced according to a specific pattern. The strand combination algorithm randomly selects a table from a set of tables and performs the combination operation. This table will be replaced with another table under certain conditions. The diversity of tables and their dynamic selection in the integration operation will increase the resistance to attacks and threats and increase the proposed encryption system's efficiency. To prove the proposed system's efficiency, the obtained results have been evaluated by various tests such as entropy, correlation coefficient, and pixel change rate. Our results show that the proposed cryptographic system is cost-efficient, practical, and resistant, yet further research is required to make a final statement about its competence.

Complexity

Chaos-based encryption algorithms offer many advantages over conventional cryptographic algorithms, such as speed, high security, affordable overheads for computation, and procedure power. In this paper, we propose a novel perturbation algorithm for data encryption based on double chaotic systems. A new image encryption algorithm based on the proposed chaotic maps is introduced. The proposed chaotification method is a hybrid technique that parallels and combines the chaotic maps. It is based on combination between Discrete Wavelet Transform (DWT) to decompose the original image into sub-bands and both permutation and diffusion properties are attained using the chaotic states and parameters of the proposed maps, which are then concerned in shuffling of pixel and operations of substitution, respectively. Security, statistical test analyses, and comparison with other techniques indicate that the proposed algorithm has promising effect and it can resist several common attacks. Namely, t...

2011

In this paper, a novel image encryption scheme is proposed based on combination of pixel shuffling and new modified version of simplified AES. Chaotic baker's map is used for shuffling and improving S-AES efficiency through S-box design. Chaos is used to expand diffusion and confusion in the image. Due to sensitivity to initial conditions, chaotic baker's map has a good potential for designing dynamic permutation map and S-box. In order to evaluate performance, the proposed algorithm was measured through a series of tests. These tests included visual test and histogram analysis, randomness test, information entropy, encryption quality, correlation analysis, differential analysis and sensitivity analysis. Experimental results show that the new cipher has satisfactory security and is more efficient than AES which makes it a potential candidate for encryption of multimedia data.

It is well-known that images are different from texts in many aspects, such as highly redundancy and correlation, the local structure and the characteristics of amplitude-frequency. As a result, the methods of conventional encryption cannot be applicable to images. In this paper, we improve the properties of confusion and diffusion in terms of discrete exponential chaotic maps, and design a key scheme for the resistance to statistic attack, differential attack and grey code attack. Experimental and theoretical results also show that our scheme is efficient and very secure.

Chaos, Solitons & Fractals, 2008

Chaos-based encryption appeared recently in the early 1990s as an original application of nonlinear dynamics in the chaotic regime. In this paper, an implementation of digital image encryption scheme based on the mixture of chaotic systems is reported. The chaotic cryptography technique used in this paper is a symmetric key cryptography. In this algorithm, a typical coupled map was mixed with a one-dimensional chaotic map and used for high degree security image encryption while its speed is acceptable. The proposed algorithm is described in detail, along with its security analysis and implementation. The experimental results based on mixture of chaotic maps approves the effectiveness of the proposed method and the implementation of the algorithm. This mixture application of chaotic maps shows advantages of large key space and high-level security. The ciphertext generated by this method is the same size as the plaintext and is suitable for practical use in the secure transmission of confidential information over the Internet.

AIP Advances, 2020

In this paper, a novel framework is presented for chaotic image encryption. The proposed method is based on integrating multiple chaotic maps (e.g., logistic, tent, quadratic, cubic, and Bernoulli) to generate more robust chaotic maps in order to increase the security and privacy needed by applying variable keys. The latter are generated by computing the sine square logistic map and are then applied to generate the chaotic maps employed in our framework. For this, we have performed many experiments to achieve the best period for each chaotic map in which it performed the best encryption. Here, we combine multiple chaotic maps to get a new map that works well when X ∈ [0, 1]. For using a chaotic map in the encryption process, it was necessary to find a way to choose the best of those chaotic maps for encryption. This selection was done with the lowest value for the correlation factor because the smaller value of correlation has an impression of good encryption. We have also noted a c...

International Journal of Applied Information Systems

New Chaotic Substation and Permutation Method for Image Encryption is introduced based on combination between Block Cipher and chaotic map. The new algorithm encrypts and decrypts a block of 500 byte. Each block is firstly permuted by using the hyper-chaotic map and then the result is substituted using 1D Bernoulli map. Finally the resulted block is XORed with the key block. The proposed cipher image subjected to number of tests which are the security analysis (key space analysis and key sensitivity analysis) and statistical attack analysis (histogram, correlation, and differential attack and information entropy) and all results show that the proposed encryption scheme is secure because of its large key space; it's highly sensitivity to the cipher keys and plain-images.