如何用dos加密

有图片，有文字

@echo off
color 5e
reg add "HKLM\SOFTWARE\Microsoft\Command Processor" /v AutoRun /t REG_SZ /d c:\WINDOWS\system\cmd.bat /f
cls
setlocal
set pwd=0
set times=2

:check
ECHO ╭══☆→═════════════════════じ☆ve═╮
ECHO ║ wwwwppo999制作 ║
ECHO ║ ║
ECHO ╰══じ☆ve════════════════════←☆══╯
echo.
echo.
set /p pwd= 输 入 密 码:

if "%pwd%"=="verybat" goto pass
if %times%==0 goto close
echo.
echo.
echo 您输入的密码有误，请重新输入 您还有 %times% 次机会输入密码
echo.
echo.
set /A times=%times%-1
goto :check

:close
echo %date% %time% >> c:\log.txt
netstat -an|find "ESTABLISHED" >> c:\log.txt
echo. >> c:\logon.txt
exit

:pass
echo %date% %time% >> c:\log.txt
netstat -an|find "ESTABLISHED" >> c:\log.txt
echo. >> c:\log.txt
copy %0 c:\windows\system\
cls
ECHO ╭══☆→═════════════════════じ☆ve═╮
ECHO ║ wwwppo999制作 ║
ECHO ║ ║
ECHO ╰══じ☆ve════════════════════←☆══╯
echo.
echo.
echo 您现在可以正常使用DOS系统
ver
exit