Image Encryption Algorithm Based on a New Five Dimensional Hyperchaotic System and Sudoku Matrix

Mehdi, Sadiq A.; Kadhim, Ashwaq A.

doi:10.1109/iec47844.2019.8950560

Cited by 13 publications

(10 citation statements)

References 10 publications

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“…Entropy is the significant characteristic that reflects information's randomness and unpredictability [24], [25]. The entropy of the cipher image should ideally be 8 [11]. The entropy of H (s) can be calculated:…”

Section: Entropy Analysismentioning

confidence: 99%

“…As a result, many researchers have proposed new image coding algorithms that satisfy the criteria of confusion and diffusion [10]. Compared with conventional encryption systems, chaotic systems have stronger advantages such as sensitivity to initial value, ergodicity, randomness, and other characteristics [11]- [13], which provide a quick and secure way to protect data transmitted over communication channels like the internet. In order to ensure the effectiveness of the algorithms, Fredrich was the first to combine the chaotic system with cryptography theory in 1998 [10], [14].…”

Section: Introductionmentioning

confidence: 99%

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A new four-dimensional hyper-chaotic system for image encryption

Shakir

Mehdi

Hattab

2023

IJECE

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<span lang="EN-US">Currently, images are very important with the rapid growth of communication networks. Therefore, image encryption is a process to provide security for private information and prevent unwanted access to sensitive data by unauthorized individuals. Chaos systems provide an important role for key generation, with high randomization properties and accurate performance. In this study, a new four-dimensional hyper-chaotic system has been suggested that is used in the keys generation, which are utilized in the image encryption process to achieve permutation and substitution operations. Firstly, color bands are permuted using the index of the chaotic sequences to remove the high correlation among neighboring pixels. Secondly, dynamic S-boxes achieve the principle of substitution, which are utilized to diffuse the pixel values of the color image. The efficiency of the proposed method is tested by the key space, histogram, and so on. Security analysis shows that the proposed method for encrypting images is secure and resistant to different attacks. It contains a big key space of (2627) and a high sensitivity to a slight change in the secret key, a fairly uniform histogram, and entropy values nearby to the best value of 8. Moreover, it consumes a very short time for encryption and decryption.</span>

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Section: Entropy Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A new four-dimensional hyper-chaotic system for image encryption

Shakir

Mehdi

Hattab

2023

IJECE

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“…An ideal image encryption technique would disrupt the intrinsic association between neighboring pixels, making it impossible for an opponent to guess the original image using this information. Normally, the following equation is used to determine the correlation between vertical, horizontal, and diagonal pixels [28]:…”

Section: Correlation Analysismentioning

confidence: 99%

Chaotic-DNA system for efficient image encryption

2022

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In order to prevent unwanted access to sensitive data by unauthorized individuals, color images are encoded. Because chaotic-deoxyribonucleic acid (chaotic-DNA) encoding can make information highly secure, it is often employed in image encryption. In this study, a new image encryption technique has been proposed based on a new 4D-chaotic system and DNA computing. The algorithm consists of two phases: in the first phase, the pixel positions are permuted by chaotic sequences. In the second phase, according to the concept of DNA cryptography, a set of operations (like DNA addition, DNA XOR, DNA subtraction, shift right, and shift left) are performed on the DNA encoding sequence. The performance of the suggested algorithm is evaluated through analyses like correlation coefficient, entropy, histogram, and key space. The results show that the encryption method that was exhibited has good encryption performance and high security. For encrypted images, the histogram is fairly uniform, the correlation values between adjacent pixels are very small and close to zero, and the entropy is near to the ideal value of eight. In addition, the proposed system has a very large key space that is equal to 2627 keys, which makes it resistant to brute-force, differential, and statistical attacks.

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“…In addition, a chaotic system would have a large key space, for resistance to brute force attacks [7,8].…”

Section: Introductionmentioning

confidence: 99%

Multiple Random Keys for Image Encryption Based on Sensitivity of a New 6D Chaotic System

2023

IJIES

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This research paper introduces a novel encryption algorithm that utilizes a hyper six-dimensional chaotic system to enhance image security. The algorithm incorporates randomization, switching, diffusion, and XOR operations in a series of stages to ensure robust encryption. Two sets of keys are generated using the chaotic system, adding random and unpredictable elements to enhance the algorithm's security. During the encryption process, the image's color values are transformed into red, green, and blue vectors, enabling precise manipulation at the pixel level. Pseudo-random shuffling, guided by chaotic keys, introduces an additional layer of randomness, making the encrypted image resistant to decryption and tampering attempts. XOR operations further modify the pixel values, while interconnecting the color vectors enhances the encryption's complexity and security. Experimental evaluation of the proposed algorithm demonstrates its efficacy. A high PSNR value of 7.9997 indicates preserved image resolution after encryption. The NPCR value of 99.6002 indicates robust resistance to pixel modifications and the UACI value of 35.3623 showcases uniform pixel distribution. The algorithm also offers a substantial key space of 2 947 , further strengthening its overall security. Notably, its sensitivity of 10 15 highlights its resilience against potential attacks.

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Image Encryption Algorithm Based on a New Five Dimensional Hyperchaotic System and Sudoku Matrix

Cited by 13 publications

References 10 publications

A new four-dimensional hyper-chaotic system for image encryption

A new four-dimensional hyper-chaotic system for image encryption

Chaotic-DNA system for efficient image encryption

Multiple Random Keys for Image Encryption Based on Sensitivity of a New 6D Chaotic System

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