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In order to effectively protect digital image information, to improve the efficiency and security of the encrypted image, many effective and feasible image encryption algorithms have been proposed. The recovery is depended on the recovery value of pixel 8 bits plane; the incorrect from low to high pixel value of plane affect the incorrect of Index...
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... system was developed by Professor Yuan Sheng Lee, who has proposed a two-dimensional chaotic systems [4] in 2004, the two-dimensional chaotic systems is a new domain-wide discrete chaotic system, with zero correlation and a stable probability distribution [4][5] . The mapping equation is 2 2 1 1 1 1 2 2 1 2 1 1 2 1 2 ( ) 2 , 1, 2, 3, 1 2 ' n n n n n n n m n n n m n n n m n ...
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It is well known that the wireless communications have great challenges in ensuring high security, due to the great facilities in attacking the communication channels. Hence there is continues trends towards finding a suitable approach to ensure high security for wireless communication. One of such approaches was with the application of chaos theor...
Citations
... Along with this analysis, the proposed scheme was compared to two representative methods from other schemes [34,35,49,50]; Table 5 presents the correlation coefficient results for the encrypted Lena image. e proposed scheme obtained results superior to those of the reference methods, as the encrypted image correlation coefficient values were smaller than those obtained by the reference methods. ...
This paper proposes a method of encrypting images with password protection for secure sharing based on deoxyribonucleic acid (DNA) sequence operations and the tangent-delay ellipse reflecting the cavity-map system (TD-ERCS). The initial values of the TD-ERCS system are generated from a user’s password, and the TD-ERCS system is used to scramble the pixel locations of the R, G, and B matrices of the original image. Next, three DNA-sequence matrices are generated by encoding the permuted color image such that it can be transformed into three matrices. Then, the TD-ERCS system is employed to generate three chaotic sequences before encoding the DNA into the three matrices. Thereafter, a DNA exclusive OR (XOR) operation is executed between the DNA sequences of the permuted image and the DNA sequences generated by the TD-ERCS system to produce three encrypted scrambled matrices. Finally, the matrices of the DNA sequences are decoded, and the R, G, and B channels are recombined to form an encrypted color image. The results of simulation and security tests reveal that the proposed algorithm offers robust encryption and demonstrates the ability to resist exhaustive, statistical, and differential attacks.
... Chaotic systems have many important properties, such as sensitive dependence on initial conditions and parameters, unpredictability, similar randomness, aperiodicity and ergodicity, which make chaotic systems popular in image encryption [22,23]. In the past 20 years, a large number of chaos-based encryption schemes have been designed [12,16,50]. According to the Shannon information theory, confusion and diffusion are two properties of the operation of a secure cipher in cryptography [27,45,46]. ...
... The three RGB bit-plane matrixes are converted to one-dimensional row vectors B n ð Þ are used as control parameters for the red layer XOR operations. The first entry of the red layer row vector is encrypted by Eq. (16), and then the i th entry is encrypted as shown in Eq. (17). ...
In this paper, we propose an efficient and self-adapting colour-image encryption algorithm based on chaos and the interactions among multiple red, green and blue (RGB) layers. Our study uses two chaotic systems and the interactions among the multiple layers to strengthen the cryptosystem for the colour-image encryption, which can achieve better confusion and diffusion performances. In the confusion process, we use the novel Rubik’s Cube Scheme (RCS) to scramble the image. The significant advantage of this approach is that it sufficiently destroys the correlation among the different layers of colour image, which is the most important feature of the randomness for the encryption. The theoretical analysis and experimental results show that the proposed algorithm can improve the encoding efficiency, enhances the security of the cipher-text, has a large key space and high key sensitivity, and is also able to resist statistical and exhaustive attacks.
... Tangent-delay ellipse reflecting cavity-map system (TD-ERCS) was developed in 2004 by Li-Yuan et al. TD-ERCS system is a discrete chaotic system and has many properties such as the maximum Lyapunov exponent which is over zero, unchangeable equiprobability distribution, and zero correlation in total field (Han and Zhu 2011;Hussain et al. 2012). TD-ERCS is described by where n = 1, 2, 3,…, and ...
Rapid growth of digital data and their security concerns increases the significance of enhancing advanced encryption techniques. Encryption is the backbone of secure communication in networks and the physical process of scrambling and permuting data in order to make them impossible to understand for unauthorized users. This paper proposes a novel audio signal encryption method, based on a mixture of three chaos functions. Due to the reversibility of the chaos functions, the decryption process is the inverse of the encryption process. This method was applied to audio signals with various sizes and the encoded messages were compared to the original ones. Simulation results and theoretical analyses show that the proposed approach offers a significant gain in terms of robustness and computational complexity.
In recent days chaos based image encryption is going through under research and implementation. Some chaos based algorithms are working well and resists many type of crypto analysis attacks, but it takes lot of time for encryption and decryption. Some of chaos based algorithms are very fast but their strength to resist attack is questionable. So these have motivated us to design a crypto system which will take less amount of time for encryption and decryption and it should resist all type of crypto analysis attacks. In this paper we have developed an advanced image encryption scheme by using block based randomization and chaos system. Here we discuss a block based transformation algorithm in which image is divided in to number of blocks. Then these blocks are transformed before going through a chaos based encryption process. At the receiver side after decryption, these blocks are re- transformed in to their original position. The main advantage of this approach is that it reproduces the original image with no loss of information during the encryption and decryption process in a reasonable amount of time, and due to sensitive chaos system becomes it more secure and reliable over the network.
