【摘要】 提出一种基于混沌映射和Walsh变换的二值图像加密算法。首先对二值图像进行混沌加密,再对混沌加密后的图像用Walsh变换进行置乱,实现图像信息的高强度加密。运用Walsh变换可以在很大程度上节约计算时间。仿真实验结果表明,混沌序列与Walsh变换相结合的方法加密强度高,计算时间短。更多还原

【Abstract】 A binary image encryption algorithm based on chaos map and discrete Walsh transform is proposed.Firstly,chaos sequence is used to encrypt the image,then the encryption image is scrambled by the discrete Walsh transform,which can achieve high-strength encryption.The discrete Walsh transform can save computation time greatly.The simulation result shows that this algorithm has high quality of secrecy as well as short computation time.更多还原