Spiral-Transform-Based Fractal Sorting Matrix for Chaotic Image Encryption

Xian, Yongjin; Wang, Xingyuan; Wang, Xiaoyu; Li, Qi; Yan, Xiaopeng

doi:10.1109/tcsi.2022.3172116

Cited by 48 publications

(8 citation statements)

References 41 publications

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“…In digital image encryption, spiral transformation is often used to permute the image [13,14]. Subramanyan et al used the conventional spiral transformation to permute the plain image, which can scan the elements of the matrix from the left corner to the center in a clockwise manner [15].…”

Section: Related Workmentioning

confidence: 99%

Color image encryption algorithm based on bidirectional spiral transformation and DNA coding

Wang¹,

Zhang²,

Zhao³

2023

Phys. Scr.

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The security of digital images has become increasingly important as information technology has advanced considerably. To ensure image security and improve the efficiency of image encryption, a novel color image encryption algorithm is proposed in this paper. Firstly, a novel three-dimensional chaotic system with extreme multistability is proposed and employed to generate the chaotic sequences to be used in the permutation and diffusion processes. Secondly, the proposed bidirectional spiral transformation is used to permute the R, G and B components extracted from the color plain image. Thirdly, the permuted pixel sequence is dynamically encoded into a DNA sequence. To further increase the permutation effect, the DNA sequence is permuted again using the index sequence. Finally, the dynamical DNA operations are performed to diffuse the permuted DNA sequence, and the designed look-up table method is used to quickly obtain the DNA operation results. The key space of the proposed algorithm is 10266, which is large enough to resist the brute-force attacks. The average entropy value of the cipher image of Peppers is 7.9971, which is much closer to the theoretical entropy value 8. The dynamic DNA operations process only takes up 0.032349s, which shows the advantage of the proposed look-up table method. Therefore, the proposed algorithm can be applied to the application that require high confidentiality and real-time.

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Section: Related Workmentioning

confidence: 99%

Color image encryption algorithm based on bidirectional spiral transformation and DNA coding

Wang¹,

Zhang²,

Zhao³

2023

Phys. Scr.

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“…That is, the plain image is processed and converted into a noise-like cipher image. Many scholars propose different image encryption schemes based on quantum computation, [4,5] chaos theory, [6][7][8] fractal sorting matrix, [9][10][11] DNA coding, [12,13] fractal control theory, [14][15][16] and other technologies. [17][18][19] Specifically, this type of image encryption algorithms is mainly composed of scrambling and diffusion, which encrypt the image by changing pixel position and pixel value, respectively.…”

Section: Introductionmentioning

confidence: 99%

Lossless embedding: A visually meaningful image encryption algorithm based on hyperchaos and compressive sensing

Wang¹,

Wang²,

Teng³

et al. 2023

Chinese Phys. B

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In this paper, a novel visually meaningful image encryption algorithm is proposed based on hyperchaotic system and compressive sensing (CS), which aims to improve the visual security of steganographic image and decrypted quality. First, a dynamic spiral block scrambling is designed to encrypt the sparse matrix generated by performing discrete wavelet transform (DWT) on the plain image. And then the encrypted image is compressed and quantified to obtain the noise-like cipher image. Then the cipher image is embedded into the Alpha channel of the carrier image in Portable Network Graphics (PNG) format to generate the visually meaningful steganographic image. In our scheme, the hyperchaotic Lorenz system controlled by the hash value of plain image is utilized to construct the scrambling matrix, the measurement matrix and the embedding matrix to achieve higher security. In addition, compared with other existing encryption algorithms, the proposed PNG-based embedding method can blindly extract the cipher image, thus effectively reducing the transmission cost and storage space. Finally, the experimental results indicate that the proposed encryption algorithm has very high visual security.

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“…[ 8,9 ] Digital encryption relies on specific algorithms to resist cropping attack and noise attacks, which plays a pivotal role in operating systems for maintaining communication privacy and network security. [ 10–14 ] Compared with digital encryption, physical encryption has the advantage of crypticity and can be realized via diverse methods, [ 15,16 ] which is widely applied in currency anti‐counterfeiting, confidential work, information transfer, etc. With the continuous development of physical encryption technology, various methods such as security codes, holographic anti‐counterfeiting, fluorescence recognition, etc., are invented.…”

Section: Introductionmentioning

confidence: 99%

Regulable Mixed‐Solvent‐Induced Phase Separation in Hydrogels for Information Encryption

Wang

et al. 2022

Small

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The rapid progress of information technology is accompanied by plenty of information embezzlement and forgery, but developing advanced encryption technologies to ensure information security remains challenging. Phase separation commonly leads to a dramatic change in the transmittance of hydrophilic polymer networks, which is a potential method for information security but is often neglected. Here, taking the polyacrylamide (PAAm) hydrogel system as a typical example, facilely adjustable information encryption and decryption via its regulable phase separation process in ethanol/water mixed solvent, are reported. By controlling the osmotic pressure of the external and internal environment, it is demonstrated that the diffusion coefficient during deswelling and reswelling, as well as the corresponding change of transmittance of the gel, can be well controlled. Relatively high osmotic pressure leads to rapid phase separation of the initial gel but slow phase remixing of the phase‐separated gel, opening the opportunity of applying the gel as a reversible information encryption device. As proof‐of‐concept demonstrations, several stable and reversible information encryption and decryption systems by making use of the phase separation process of the gels are designed, which are expected to inspire the development of next‐generation soft devices for information technology.

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Spiral-Transform-Based Fractal Sorting Matrix for Chaotic Image Encryption

Cited by 48 publications

References 41 publications

Color image encryption algorithm based on bidirectional spiral transformation and DNA coding

Color image encryption algorithm based on bidirectional spiral transformation and DNA coding

Lossless embedding: A visually meaningful image encryption algorithm based on hyperchaos and compressive sensing

Regulable Mixed‐Solvent‐Induced Phase Separation in Hydrogels for Information Encryption

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