An image encryption algorithm based on memristive chaotic neuron in medical internet of things environments.

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Bibliographic Details
Title: An image encryption algorithm based on memristive chaotic neuron in medical internet of things environments.
Authors: Yu, Zhenhua1 (AUTHOR), Zhu, Kailong1 (AUTHOR), Song, Xinlin2 (AUTHOR), Yang, Feifei1 (AUTHOR) dlpuyff@sina.com
Source: Engineering Applications of Artificial Intelligence. Jun2026, Vol. 173, pN.PAG-N.PAG. 1p.
Subjects: Image encryption, Internet of medical things, Data protection, Cryptography
Abstract: To address the severe security and privacy challenges faced by massive medical image data during transmission and storage in the medical Internet of Things environment, this paper proposes an image encryption algorithm based on memristive chaotic neuron. The encryption process adopts the classic architecture of scrambling-diffusion. During the scrambling stage, the image is adaptively divided into blocks. Within each sub-block, Zigzag scanning and rotation are randomly performed with equal probability to rearrange the pixel positions. Finally, the sub-blocks are globally randomly arranged to achieve pixel position scrambling in the deep space, break the spatial correlation between pixels. During the diffusion stage, based on the chaotic sequence, a dynamic Substitution box (S-box) is constructed to perform local XOR perturbation on the pixel values. Subsequently, the corresponding chaotic sequence is accumulated along the spiral path with the previous pixel value to achieve global gray-scale diffusion. The simulation experiments and security analysis show that this algorithm is extremely sensitive to the key, has a huge key space (2402), and can effectively resist various attack methods such as statistical analysis and brute-force attacks such as the ciphertext image has a correlation coefficient near zero and a uniform distribution, indicating successful encryption. The information entropy of the encrypted medical image is close to the theoretical maximum value, the correlation coefficient of adjacent pixels is close to zero, and the distribution is uniform. This algorithm ensures high security while also considering computational efficiency. It provides an effective solution for protecting patient privacy and the confidentiality of medical data. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
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