CAJ | 학술논문

基于坐标变换的图像置乱是一种图像加密技术.提出一种基于图像矩阵循环移位操作的灰度图像置乱方法,循环移动位数的随机性增加了变换的无规律性,提高了算法的抗攻击能力.算法原理简单、易于实现,对图像大小没有限制.理论分析和实验仿真表明,算法具有良好的安全性和可操作性.
기우좌표변환적도상치란시일충도상가밀기술.제출일충기우도상구진순배이위조작적회도도상치란방법,순배이동위수적수궤성증가료변환적무규률성,제고료산법적항공격능력.산법원리간단、역우실현,대도상대소몰유한제.이론분석화실험방진표명,산법구유량호적안전성화가조작성.
Image scrambling based on coordinate transformation was a kind of image encryption technologies. This paper put forward a scrambling method for gray image based on image matrix's circular shifting, the random-bit of circle shifting increased non-regularity of the transformation, improved the algorithm's ability of anti-attacking. The algorithm had a simple principle and easy to implement, and had no restriction on image size. Theoretical analysis and simulation experiments show that the algorithm has good security and maneuverability.