发表刊物：Optics Communications
关键字：Image encryption; Remote sensing; Discrete wavelet transform (DWT); Spatial domain
摘要：Remote-sensing technology plays an important role in military and industrial fields. Remote-sensing image is the main means of acquiring information from satellites, which always contain some confidential information. To securely transmit and store remote-sensing images, we propose a new image encryption algorithm in hybrid domains. This algorithm makes full use of the advantages of image encryption in both spatial domain and transform domain. First, the low-pass subband coefficients of image DWT (discrete wavelet transform) decomposition are sorted by a PWLCM system in transform domain. Second, the image after IDWT (inverse discrete wavelet transform) reconstruction is diffused with 2D (two-dimensional) Logistic map and XOR operation in spatial domain. The experiment results and algorithm analyses show that the new algorithm possesses a large key space and can resist brute-force, statistical and differential attacks. Meanwhile, the proposed algorithm has the desirable encryption efficiency to satisfy requirements in practice.
第一作者：Xiaoqiang Zhang
合写作者：Shilong Ma,Guiliang Zhu
论文类型：期刊论文
卷号：285
期号：7
页面范围：1736-1743
是否译文：否
发表时间：2012-04-01
收录刊物：SCI
发布期刊链接：https://doi.org/10.1016/j.optcom.2011.12.023