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An ultrahigh-resolution image encryption algorithm using random super-pixel strategy
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DOI：10.1007/s11042-021-11096-4.png)
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Abstract
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Almost all existing image encryption algorithms are only suitable for low-resolution images in the standard image library. When they are used to encrypt high-resolution images, they will inevitably suffer from inefficiency or program crashes. Inspired by the super-pixel concept in image processing, in this paper, a new image encryption algorithm using PRSP (Pseudo Random Super Pixel) strategy and KBCA (Key-based Cellular Automata) is proposed. Both scrambling and diffusion are implemented in parallel to improve the efficiency of encryption algorithm when encrypting ultra-high resolution images. Besides, random diffusion path is designed to ensure the security of encryption algorithm. Simulations are carried out using CUDA (Compute Unified Device Architecture) platform, and simulation results show the high efficiency and security of our algorithm.
Keywords:
Image encryption
Ultrahigh resolution images
Super-pixels
Pseudo-random diffusion path
Parallelism
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