Multiple-image encryption algorithm based on mixed image element and chaos. (August 2017)

• Record Type: Journal Article
• Authors: Zhang, Xiaoqiang; Wang, Xuesong
• Is Part Of: Computers & electrical engineering. Volume 62(2017)
• Page Start: 401
• Page End: 413
• Publication Date: 2017-08
• Subjects: Multiple-image encryption (MIE) -- Single-image encryption (SIE) -- Chaotic system -- Big image -- Encryption efficiency; Computer engineering -- Periodicals; Electrical engineering -- Periodicals; Electrical engineering -- Data processing -- Periodicals; Ordinateurs -- Conception et construction -- Périodiques; Électrotechnique -- Périodiques; Électrotechnique -- Informatique -- Périodiques; Computer engineering; Electrical engineering; Electrical engineering -- Data processing; Periodicals; Electronic journals; 621.302854
• DOI: 10.1016/j.compeleceng.2016.12.025
• Languages: English
• ISSNs: 0045-7906

Abstract

Highlight: A new multiple-image encryption algorithm based on mixed image element and chaos is proposed. Conceptions of pure and mixed image elements are defined. A similar algorithm is introduced and the comparison analyses are made. Experimental results show that the proposed algorithm is efficient and secure. Abstract: To improve the encryption efficiency and facilitate the secure transmission of multiple images, this paper presents a new multiple-image encryption (MIE) algorithm based on the mixed image element and piecewise linear chaotic maps (PWLCM). Firstly, Alice (the sender) combines original images into a big image, and divides it into many pure image elements; secondly, she scrambles these pure image elements with the chaotic sequence generated by the PWLCM system to get mixed image elements; thirdly, she combines these mixed image elements into a big-scrambled image, and segments it into small images with the equal size of original images; finally, these small images, i.e., encrypted images, are named with the filenames generated by another PWLCM system. Meanwhile, the comparison analysis with a similar existing algorithm is made. Experimental results and algorithm analyses show that the new algorithm is very efficient and secure. Graphical abstract: