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论文类型：期刊论文
发表时间：2017-01-01
发表刊物：OPTICS AND LASERS IN ENGINEERING
收录刊物：SCIE、EI
卷号：88
页面范围：20-27
ISSN号：0143-8166
关键字：Image/video encryption; Chaotic phase masks; Henon map; Cascaded Fresnel transform; Digital holography
摘要：We propose an image encryption scheme using chaotic phase masks and cascaded Fresnel transform holography based on a constrained optimization algorithm. In the proposed encryption scheme, the chaotic phase masks are generated by Henon map, and the initial conditions and parameters of Henon map serve as the main secret keys during the encryption and decryption process. With the help of multiple chaotic phase masks, the original image can be encrypted into the form of a hologram. The constrained optimization algorithm makes it possible to retrieve the original image from only single frame hologram. The use of chaotic phase masks makes the key management and transmission become very convenient. In addition, the geometric parameters of optical system serve as the additional keys, which can improve the security level of the proposed scheme. Comprehensive security analysis performed on the proposed encryption scheme demonstrates that the scheme has high resistance against various potential attacks. Moreover, the proposed encryption scheme can be used to encrypt video information. And simulations performed on a video in AVI format have also verified the feasibility of the scheme for video encryption. (C) 2016 Elsevier Ltd. All rights reserved.