import?java.io.IOException;
import?java.io.InputStream;

/**
?*?
?*?類型描述?解密流
?*?
?*?
?*/
public?class?DecryptStream?extends?InputStream?{

?private?byte?key;
?private?InputStream?in;

?/**
??*?
??*?@param?key?密鑰
??*?@param?in?需要解密的流
??*/
?public?DecryptStream（byte?key?InputStream?in）?{
??this.key?=?key;
??this.in?=?in;
?}

?@Override
?public?int?read（）?throws?IOException?{
??return?in.read（）?^?key;
?}

?@Override
?public?int?read（byte[]?b?int?off?int?len）?throws?IOException?{
??byte[]?temp?=?new?byte[b.length];
??int?c?=?in.read（temp?off?len）;
??for?（int?i?=?0;?i????b[i]?=?（byte）?（temp[i]?^?key）;
??}
??return?c;
?}

}

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

?????文件????????301??2013-10-07?12:48??Stream\.classpath

?????文件????????382??2013-10-07?12:48??Stream\.project

?????文件????????598??2013-10-07?12:48??Stream\.settings\org.eclipse.jdt.core.prefs

?????文件????????847??2013-10-31?22:52??Stream\bin\DecryptStream.class

?????文件????????581??2013-10-31?22:52??Stream\bin\EncryptStream.class

?????文件???????1711??2013-10-31?22:52??Stream\bin\Stream.class

?????文件????????703??2013-10-07?23:54??Stream\src\DecryptStream.java

?????文件????????465??2013-10-07?23:54??Stream\src\EncryptStream.java

?????文件???????1458??2013-10-07?23:54??Stream\src\Stream.java

?????文件?????????10??2013-10-08?00:00??Stream\加密過的文件.dat

?????文件?????????10??2013-10-08?00:00??Stream\要加密的文件.dat

?????文件?????????10??2013-10-08?00:00??Stream\解密出來的文件.dat

?????目錄??????????0??2013-10-07?12:48??Stream\.settings

?????目錄??????????0??2013-10-31?22:52??Stream\bin

?????目錄??????????0??2013-10-07?13:08??Stream\src

?????目錄??????????0??2013-10-08?00:00??Stream

-----------?---------??----------?-----??----

?????????????????7076????????????????????16