2022
DOI: 10.3390/e24030384
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A Novel and Fast Encryption System Based on Improved Josephus Scrambling and Chaotic Mapping

Abstract: To address the shortcomings of weak confusion and high time complexity of the existing permutation algorithms, including the traditional Josephus ring permutation (TJRP), an improved Josephus ring-based permutation (IJRBP) algorithm is developed. The proposed IJRBP replaces the remove operation used in TJRP with the position exchange operation and employs random permutation steps instead of fixed steps, which can offer a better scrambling effect and a higher permutation efficiency, compared with various scramb… Show more

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Cited by 10 publications
(11 citation statements)
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“…Step 1: to remove the correlations of the original image, scrambling is necessary. First, we transform all pixels of the grey-scale image I sized M × N to binary sequence and then scramble in the pixel level, which dislocates the position of all elements with Guan et al [40]. en, we segment the image into eight bit planes and scramble within each bit plane by Li et al [41].…”
Section: Image Encryptionmentioning
confidence: 99%
“…Step 1: to remove the correlations of the original image, scrambling is necessary. First, we transform all pixels of the grey-scale image I sized M × N to binary sequence and then scramble in the pixel level, which dislocates the position of all elements with Guan et al [40]. en, we segment the image into eight bit planes and scramble within each bit plane by Li et al [41].…”
Section: Image Encryptionmentioning
confidence: 99%
“…The straightforward bit position altering technique was unable to alter the statistical distribution of the bits in order to mitigate the dangers brought on by the independence of the picture encryption algorithm and the plaintext. [20], and it was easy to track the bits, which led to cracking. Last, the confusion and diffusion characteristics of the algorithm were further enhanced by cipher feedback.…”
Section: Literature Reviewmentioning
confidence: 99%
“…In 1998, Fridrich [6] presented a new image encryption architecture, which employed the pseudo-random numbers generated by the chaotic system for both scrambling and diffusion stage. In recent years, a plethora of encryption algorithms have been proposed, which utilize a similar encryption framework [1][2][3][4][5][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. In these work, one or multiple pseudo-random sequences generated by 1D or high-dimensional chaotic maps are needed for scrambling or diffusion.…”
Section: Introductionmentioning
confidence: 99%
“…However, traditional Josephus traversing has two drawbacks. One is the fixed step size, which most scholars [9,13,14] try to solve by using a dynamic step size. The dynamic step size is determined by a pseudo-random sequence generated with a chaotic system.…”
Section: Introductionmentioning
confidence: 99%