图像加密

import cv2
import numpy as np
lena=cv2.imread("C:/Users/xpp/Desktop/Lena.png",0)#明文：原始图像数据
r,c=lena.shape
key=np.random.randint(0,256,size=[r,c],dtype=np.uint8)#密钥：随机生成一幅图像作为密钥
encryption=cv2.bitwise_xor(lena,key)#加密：通过xor(明文，密钥)实现
decryption=cv2.bitwise_xor(encryption,key)#解密：通过xor(加密图像，密钥)实现
cv2.imshow("lena",lena)
cv2.imshow("key",key)
cv2.imshow("encryption",encryption)
cv2.imshow("decryption",decryption)
cv2.waitKey()
cv2.destroyAllWindows()