核心提示：MATLAB代做|FPGA代做-用Logitic 映射产生混沌序列...
%加密程序
function b=jiami(a,s,h)
a=imread(a);
[m1,n1]=size(a(:,:,1));
x=zeros(1,m1+n1);
y=[1:m1+n1];
%然后, 用Logitic 映射产生混沌序列:
for n=1:m1+n1-1
x(1)=s;
q=h;
x(n+1)=q*x(n)*(1- x(n));
end
%排序行置乱
for f=1:m1-1
for h=f:m1
if x(f)>x(h)
k=x(f);
x(f)=x(h);
x(h)=k;
m=y(f);
y(f)=y(h);
y(h)=m;
c1=a(f,:,:);
a(f,:,:)=a(h,:,:);
a(h,:,:)=c1;
end
end
end
%列置乱
for f=m1:m1+n1-1
for h=f:m1+n1
if x(f)>x(h)
k=x(f);
x(f)=x(h);
x(h)=k;
m=y(f);
y(f)=y(h);
y(h)=m;
c1=a(:,f-m1,:);
a(:,f-m1,:)=a(:,h-m1,:);
a(:,h-m1,:)=c1;
end
end
end
imwrite(a,'m.bmp');
winopen('m.bmp')
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