A two-dimensional chaotic model and its application in image encryption

Lei, RongQing; Liu, LingFeng

doi:10.1088/1402-4896/ad4f64

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…As can be seen from the figure, despite the fact that we have implemented a variety of attack strategies of different degrees against the cryptographic images, we are still able to accurately decrypt the correct results while maintaining a satisfactory level of clarity. What's more, under the same attack conditions, our algorithm shows a more excellent performance compared to the comparison algorithm [37], which further verifies the high robustness of our encryption algorithm.…”

Section: Robustness Analysissupporting

confidence: 63%

A hierarchical authorization image encryption algorithm based on two-dimensional time-varying delayed chaotic map

Jin,

Fan,

Zhang

et al. 2024

Phys. Scr.

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With the continuous development of information technology, the security of images in the process of transmission, storage and use has also become the focus of network security. However, most of the existing image encryption algorithms only focus on the security of images in the transmission and storage process, while ignoring their security in use. For some special organisations, images are very sensitive information and their security during usage is also very important. Similar to the advanced encryption information stored in the public security system, the depth of information that can be viewed by ordinary privileges and advanced privileges is different. But there is no such hierarchical authorisation algorithm in image security. In order to solve this problem, this study proposes a hierarchical authorisation encryption and decryption algorithm, which achieves hierarchical decryption while ensuring the security of encrypted images. In this method, the image is decomposed by bit plane, and the bit plane is grouped, and each group adopts different key. According to the level of legitimate users, the corresponding key is assigned to them, and the clarity of the decrypted image requested by different levels of users is different, that is, the information depth is different. This method extends the scope of application of the encryption algorithm and is more practical than the existing encryption algorithm.

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Section: Robustness Analysissupporting

confidence: 63%

A hierarchical authorization image encryption algorithm based on two-dimensional time-varying delayed chaotic map

Jin,

Fan,

Zhang

et al. 2024

Phys. Scr.

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Multi-wing chaotic system based on meminductor and its application in image encryption

Ding,

Hu,

Geng

et al. 2024

Phys. Scr.

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Meminductor is a novel type of nonlinear device following the memristor, characterized by its memory properties. Currently, research on meminductors is still in its infancy, with their physical devices yet to be formally realized. Therefore, conducting fundamental research on their nonlinear circuit properties and applications is of great significance. In this paper, a new multi-wing chaotic system is proposed based on the mathematical model of a magnetically controlled meminductor. By varying the values of its parameters, the system can generate two-wing, three-wing, and four-wing chaotic attractors. Various analytical methods are employed to study the dynamical behaviours of the proposed chaotic system. The results demonstrate that the system is highly sensitive to its initial conditions and control parameters, which makes it suitable for image encryption. Based on the new system, we propose a new algorithm for image encryption that combines the newly established four-dimensional multi-wing chaotic system with bit plane decomposition technique, firstly, the high four-bit planes containing 94% image information are disordered by S-type permutation, then the disordered bit planes perform operation of XOR with the random matrix generated by chaotic sequences, and finally, the encrypted image is obtained by merging the bit planes.

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A Chaos-Based Encryption Algorithm to Protect the Security of Digital Artwork Images

Shi,

Li,

Jin

et al. 2024

Mathematics

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Due to the security weaknesses of chaos-based pseudorandom number generators, in this paper, a new pseudorandom number generator (PRNG) based on mixing three-dimensional variables of a cat chaotic map is proposed. A uniformly distributed chaotic sequence by a logistic map is used in the mixing step. Both statistical tests and a security analysis indicate that our PRNG has good randomness and is more complex than any one-dimensional variable of a cat map. Furthermore, a new image encryption algorithm based on the chaotic PRNG is provided to protect the content of artwork images. The core of the algorithm is to use the sequence generated by the pseudorandom number generator to achieve the process of disruption and diffusion of the image pixels, so as to achieve the effect of obfuscation and encryption of the image content. Several security tests demonstrate that this image encryption algorithm has a high security level.

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A two-dimensional chaotic model and its application in image encryption

Cited by 3 publications

References 27 publications

A hierarchical authorization image encryption algorithm based on two-dimensional time-varying delayed chaotic map

A hierarchical authorization image encryption algorithm based on two-dimensional time-varying delayed chaotic map

Multi-wing chaotic system based on meminductor and its application in image encryption

A Chaos-Based Encryption Algorithm to Protect the Security of Digital Artwork Images

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