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Fast image encryption algorithm based on (n, m, k)-PCMLCA
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DOI：10.1007/s11042-021-11424-8.png)
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En 中文
Cellular Automata (CA) can be implemented by hardware and processed in parallel unlike the conventional algorithm based on chaotic function. In this paper, we propose a fast encryption algorithm for color image using (n, m, k)-programmable complemented maximum length CA((n, m, k)-PCMLCA). This algorithm improves the speed of shuffling pixel positions in the color image encryption system. The encryption process of the proposed image encryption system consists of a substitution step and a shuffling step. In the substitution step, we design the (n, m, k)-PCMLCA which can generate nonlinear sequences whose lengths are longer than the lengths of sequences generated by complemented maximum length CA (C-MLCA), and use it as the key sequence generator. In the shuffling step, we improve the encryption/decryption speed by raising the domain processing the image to the row/column level rather than the pixel unit and processing the block unit using 1-D MLCA. With the advantage of these CA, we can improve the speed of encryption/decryption.
Keyword:
Fast image encryption
Image shuffling
Cellular automata
Programmable complemented MLCA
PRNG
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3
论文数:
1.9W
被引数:
3.2W
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