期刊名称：International Journal of Multimedia and Ubiquitous Engineering
印刷版ISSN：1975-0080
出版年度：2020
卷号：15
期号：2
DOI：10.21742/ijmue.2020.15.2.01
语种：English
出版社：SERSC
摘要：Many threats in turn transmit images from satellites to Earth which can affect the confidentiality of the data as well as its qualities. From this encryption algorithms capable of securing the transmitted images are used, to preserve the quality of origins. The satellite images often have a large volume and high redundancy. At the same time, the satellites work under tight limitations in terms of computing power and resources. In addition to that, it operates in a harmful environment and therefore, any electronics used onboard, including encryption electronics, may exhibit radiation-induced defects. Our objective in this work is to assess the quality of a particular type of satellite image, which is an interferogram from the InSAR system, encrypted using the AES-256 standard and the RSA asymmetric encryption algorithm using Counter-mode encryption (CTR) mode and Output Feedback (OFB) mode. The evaluation work covered, it’s accomplished using different metrics, based on an objective evaluation with the methods using a complete reference image which is the original interferogram, the quantitative measures used are: The Mean Square Error (MSE), the Peak Signal to Noise Ratio (PSNR), Structural SIMilarity index (SSIM). Other statistical analyzes are used such as: the analysis of the original, encrypted and decrypted interferogram histogram, the entropy and the correlation coefficient between the adjacent pixels, the correlation between the original interferogram and the encrypted interferogram for the two modes under AES-256, as well as encryption speed, and execution time.
关键词：Interferogram quality assessment;Advanced encryptions standard (AES-256);SSIM;CTR and OFB mode
