{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T10:43:52Z","timestamp":1777718632259,"version":"3.51.4"},"reference-count":38,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2015,4,9]],"date-time":"2015-04-09T00:00:00Z","timestamp":1428537600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>We propose a novel image encryption algorithm based on two pseudorandom bit generators: Chebyshev map based and rotation equation based. The first is used for permutation, and the second one for substitution operations. Detailed security analysis has been provided on the novel image encryption algorithm using visual testing, key space evaluation, histogram analysis, information entropy calculation, correlation coefficient analysis, differential analysis, key sensitivity test, and computational and complexity analysis. Based on the theoretical and empirical results the novel image encryption scheme demonstrates an excellent level of security.<\/jats:p>","DOI":"10.3390\/e17042117","type":"journal-article","created":{"date-parts":[[2015,4,9]],"date-time":"2015-04-09T10:44:31Z","timestamp":1428576271000},"page":"2117-2139","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":91,"title":["Image Encryption Using Chebyshev Map and Rotation Equation"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7307-5914","authenticated-orcid":false,"given":"Borislav","family":"Stoyanov","sequence":"first","affiliation":[{"name":"Department of Computer Informatics, Faculty of Mathematics and Informatics, Konstantin Preslavski University of Shumen, Shumen 9712, Bulgaria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Krasimir","family":"Kordov","sequence":"additional","affiliation":[{"name":"Department of Computer Informatics, Faculty of Mathematics and Informatics, Konstantin Preslavski University of Shumen, Shumen 9712, Bulgaria"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2015,4,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1259","DOI":"10.1142\/S021812749800098X","article-title":"Symmetric Ciphers Based on Two-Dimensional Chaotic Maps","volume":"8","author":"Fridrich","year":"1998","journal-title":"Int. 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