图像解密与程序加密_matlab

clear clc %warning off img=imread('1.jpg');%img代表原图像矩阵 img=double(img); size1=size(img); img_1=img(:);%img_1代表拉直后的图像矩阵 password=[8,12,14,16,3,7,9]; xv=password; [x1,x2]=size(password); k=1 while x2<1000 p2=password*3; password=[password p2]; [x1,x2]=size(password); k=k+1; end %password=randperm(6); [m,n]=size(password);%密码的长和宽 %for i=1:n %password(i)=password(i)^2+18; %end img_new=zeros(size(img));%新图像的矩阵 c1=zeros(size(img)); j=1; for x=1:size1(1) for y=1:size1(2) for z=1:size1(3) img_new(x,y,z)=img(x,y,z)+password(j); img_new(x,y,z)=mod(img_new(x,y,z),256); j=j+1; if(j==n) j=1; break end end end end img_last=uint8(img_new); %img_last(1,1,1) imwrite(img_last,'2.png');%存储出了问题。 %da=imread('2.jpg'); %da(1,1,1) imshow(img_last)%显示图像的方法