clear;
x=imread（‘加密后的lena.bmp‘‘bmp‘）;
[m?n]=size（x）;
%%%%%%%%所有像素值變為一維向量
for?i?=?1:m
????for?j?=?1:n
????????y（（i-1）*n+j）?=?x（ij）;????
????end?
end
N?=?m*n;
%%%%%%%%%%%%%%%%%產生第二個混沌序列
lgst1（1）=input（‘請輸入密鑰2:???‘）;
for?ii?=?1:N-1
????lgst1（ii+1）=4*lgst1（ii）-4*lgst1（ii）^2;
end
%%%%%%%%*******冒泡法排序*******
[resultju]?=?maopao_order（lgst1）;
b?=?y;
for?i?=?1:N
????y（ju（i））?=?b（i）;
end


%%%%%%%%%%%%%%%%%產生第一個混沌序列
lgst（1）=input（‘請輸入密鑰1:???‘）;
for?ii?=?1:N-1
????lgst（ii+1）=4*lgst（ii）-4*lgst（ii）^2;
end

disp（‘解密中‘）;
lgst?=?mod（1000*lgst256）;
lgst?=?uint8（lgst）;

for?i=1:N
????y（i）=bitxor（lgst（i）y（i））;
end

for?i?=?1:N
????mm?=?fix（i/n）+1;
????nn?=?mod（in）;
????if?nn?==?0
????????mm?=?mm-1;
????????nn?=?256;
????end
????xx（mmnn）?=?y（i）;
end
imwrite（xx‘解密后的lena.bmp‘‘bmp‘）;
disp（‘解密成功‘）;
winopen（‘解密后的lena.bmp‘）;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????921??2014-04-19?20:51??hundun\decrypt.asv

?????文件????????937??2014-04-19?21:12??hundun\decrypt.m

?????文件????????388??2006-06-07?14:53??hundun\decrypt1.m

?????文件???????1172??2014-04-19?21:07??hundun\decrypt_div.m

?????文件????????939??2014-04-20?16:35??hundun\decrypt_noise.m

?????文件???????1236??2014-04-20?15:37??hundun\destroy_decrypt.asv

?????文件???????1240??2014-04-20?15:38??hundun\destroy_decrypt.m

?????文件????????932??2014-04-19?19:41??hundun\encrypt.asv

?????文件????????926??2014-04-19?21:10??hundun\encrypt.m

?????文件????????382??2006-06-07?14:58??hundun\encrypt1.m

?????文件????????923??2014-04-19?21:07??hundun\encrypt_div.m

?????文件?????144718??2014-04-20?16:25??hundun\gauss_noise.bmp

?????文件????????126??2014-04-20?15:49??hundun\hist_image.m

?????文件?????236278??2014-04-20?15:53??hundun\jiami_hist.bmp

?????文件??????66616??2005-11-09?20:04??hundun\lena.bmp

?????文件?????236278??2014-04-20?15:53??hundun\lena_hist.bmp

?????文件????????500??2014-04-19?19:56??hundun\maopao_order.asv

?????文件????????500??2014-04-19?19:58??hundun\maopao_order.m

?????文件????????340??2014-04-20?16:27??hundun\noise_jiami.asv

?????文件????????336??2014-04-20?16:28??hundun\noise_jiami.m

?????文件????????328??2014-04-17?22:34??hundun\paixu_maopao.m

?????文件?????144718??2014-04-20?16:25??hundun\salt_noise.bmp

?????文件????????133??2014-04-19?19:51??hundun\test.asv

?????文件????????192??2014-04-19?20:35??hundun\test.m

?????文件??????????2??2014-04-19?21:06??hundun\test1.asv

?????文件??????????2??2014-04-19?21:08??hundun\test1.m

?????文件???????1160??2014-04-19?20:36??hundun\test2.asv

?????文件???????1368??2014-04-19?20:44??hundun\test2.m

?????文件????????347??2014-04-21?20:59??hundun\xiangguan_fenxi.asv

?????文件????????397??2014-04-21?21:03??hundun\xiangguan_fenxi.m

............此處省略18個文件信息