查看完整版本: 如何获得屏幕保护程序的密码

如何获得屏幕保护程序的密码

　　如果屏幕保护程序设置了密码，密码将被加密，然后写到注册表的“HKEY_CURRENT_USERControl PanelDesktopScreenSave_Data”位置。屏保密码的最大长度为128位。加密方式是将密码与一特定字符串异或后得到密文，经过参考有关资料，笔者利用VB成功地破解了屏保的密码。
一、源程序
注释：通用声明
** Declare Function RegOpenKeyEx Lib "advapi32.dll" Alias "RegOpenKeyExA" (ByVal hKey As Long, ByVal lpSubKey As String, ByVal ulOptions As Long, ByVal samDesired As Long, phkResult As Long) As Long
** Declare Function RegCloseKey Lib "advapi32.dll" (ByVal hKey As Long) As Long
** Declare Function RegQueryValueEx Lib "advapi32.dll" Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal lpReserved As Long, lpType As Long, lpData As Any, lpcbData As Long) As Long
** Declare Function RegSetValueEx Lib "advapi32.dll" Alias "RegSetValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal Reserved As Long, ByVal dwType As Long, lpData As Any, ByVal cbData As Long) As Long
注释：加密和解密所用的字符串
Const Key = "48EE761D6769A11B7A8C47F85495975F78D9DA6C59D76B35C57785182A0E52FF00
E31B718D3463EB91C3240FB7C2F8E3B6544C3554E7C94928A385110B2C68FBEE7DF66CE39C2DE47
2C3BB851A123C32E36B4F4DF4A924C8FA78AD23A1E46D9A04CE2BC5B6C5EF935CA8852B413772FA
574541A1204F80B3D52302643F6CF10F"
** Const HKEY_CURRENT_USER =