Digital Image Scrambling Algorithm Based on Circulant Matrix
Changqing Zhu · Journal of Huaqiao University · 2008
Presenting a new image scrambling algorithm based on circulant matrix.The algorithm throwt equably the position of image pixel into confusion from space position and has high degree of scrambling with little warp.The algorithm shows many superiority such as carrying out simply,operating easily,high stability,and better effect through the comparison of numerical experiments among the circulant matrix method,Josephus traversing and chaos method.It is hard to uncoil the encrypted image when the keys s and t are not open even if the algorithm is open.The algorithm is suitable to any size of square matrix image,and also can be extended to color image,but it do not suit for the non-square matrix image.