基于混沌映射的图像位平面加密算法

A Chaos-based Image Bit-Plane Encryption Algorithm

文章针对目前的图像加密算法中,存在加密后的图像与原图像仍然相关的问题,提出了一种基于混沌映射的图像位平面加密算法。该算法首先通过Logistic映射构造出与原图像大小相同的混沌位平面图像,然后将生成的混沌位平面图像按一定的规则与原图像的各位平面进行异或。实验表明,该算法能很好的使原图像处于混沌状态,并能有效的改变原图像的统计特性。

For the current image encryption algorithm,there exists the issue that encrypted image is still related to the original image.Consequently a chaos-based image bit-plane encryption algorithm is presented.The algorithm firstly constructs a chaos plane image with the same size as the original image by Logistic mapping,and then the generated chaotic bit-plane images are carried out XOR with the bit-plane of original images according to certain rules.Experiments show that the algorithm can not only well make the original image in a chaotic state,and but also effectively change the statistical properties of the original images.