{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T01:13:23Z","timestamp":1777511603569,"version":"3.51.4"},"reference-count":40,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2015,6,9]],"date-time":"2015-06-09T00:00:00Z","timestamp":1433808000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61173183"],"award-info":[{"award-number":["61173183"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Doctoral Program Foundation of Institution of Higher Education of China","award":["20070141014"],"award-info":[{"award-number":["20070141014"]}]},{"name":"Program for Liaoning Excellent Talents in University","award":["LR2012003"],"award-info":[{"award-number":["LR2012003"]}]},{"name":"National Natural Science Foundation of Liaoning province","award":["20082165"],"award-info":[{"award-number":["20082165"]}]},{"DOI":"10.13039\/501100012226","name":"Fundamental Research Funds for the Central Universities","doi-asserted-by":"publisher","award":["DUT12JB06"],"award-info":[{"award-number":["DUT12JB06"]}],"id":[{"id":"10.13039\/501100012226","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>An encryption scheme for colour images using a spatiotemporal chaotic system is proposed. Initially, we use the R, G and B components of a colour plain-image to form a matrix. Then the matrix is permutated by using zigzag path scrambling. The resultant matrix is then passed through a substitution process. Finally, the ciphered colour image is obtained from the confused matrix. Theoretical analysis and experimental results indicate that the proposed scheme is both secure and practical, which make it suitable for encrypting colour images of any size.<\/jats:p>","DOI":"10.3390\/e17063877","type":"journal-article","created":{"date-parts":[[2015,6,10]],"date-time":"2015-06-10T14:06:12Z","timestamp":1433945172000},"page":"3877-3897","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":37,"title":["A Colour Image Encryption Scheme Using Permutation-Substitution Based on Chaos"],"prefix":"10.3390","volume":"17","author":[{"given":"Xing-Yuan","family":"Wang","sequence":"first","affiliation":[{"name":"Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ying-Qian","family":"Zhang","sequence":"additional","affiliation":[{"name":"Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China"},{"name":"City Institute, Dalian University of Technology, Dalian 116600, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xue-Mei","family":"Bao","sequence":"additional","affiliation":[{"name":"Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2015,6,9]]},"reference":[{"key":"ref_1","unstructured":"Uhl, A., and Pommer, A. 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