Real-time video encryption scheme based on multi-round confusion-diffusion architecture

Li-Xun Zhi, Wan-Jing Zhang, Jin Zhong, Wen-Chao Ma and Dong Jiang
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Li-Xun Zhi: School of Computer and Communication, Jiangsu Vocational College of Electronics and Information, Huaian 223003, P. R. China
Wan-Jing Zhang: School of Computer and Communication, Jiangsu Vocational College of Electronics and Information, Huaian 223003, P. R. China
Jin Zhong: School of Computer Science and Technology, Hefei Normal University, Hefei 230061, P. R. China
Wen-Chao Ma: School of Physics, Nanjing University, Nanjing 210093, P. R. China
Dong Jiang: School of Internet, Anhui University, Hefei 230039, P. R. China5National Engineering Research Center of Agro-Ecological Big Data Analysis and Application, Anhui University, Hefei 230601, P. R. China

International Journal of Modern Physics C (IJMPC), 2024, vol. 35, issue 08, 1-27

Abstract: With the rapid development of network and multimedia technologies, the widespread use of images in social networks, military applications, and other fields has led to substantial demands for image encryption. To protect images from potential threats, most protocols perform multiple rounds of confusion and diffusion until a satisfactory security level is attained. However, this strategy is time-consuming and unable to meet the requirements for real-time video encryption. Consequently, many works realize video encryption by simplifying the encryption process, e.g. employing a single round of confusion and diffusion to encrypt each frame. To enhance security to the level of image encryption while ensuring real-time performance, this paper proposes a real-time video encryption protocol based on multi-round confusion-diffusion architecture. It splits the frame into subframes, uses a set of threads to concurrently perform confusion and diffusion. The statistical and security analyses demonstrate the proposed protocol exhibits exceptional statistical properties and is resistant to various attacks. The encryption speed evaluation shows that our method significantly enhances computational efficiency, achieving latency-free encryption of 512×512 24FPS videos using the Intel Xeon Gold 6226R@2.9GHz CPU. Even with the execution of four rounds of confusion and six rounds of diffusion operations on each frame, the average encryption time remains below 30ms.

Keywords: Real-time video encryption; hyper-chaotic systems; multi-round confusion-diffusion architecture; parallel computing (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1142/S0129183124500955

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