Encrypt and Decrypt from the context menu

Normally, if you want to encrypt or decrypt a file in Windows XP Pro or Vista, you simply right-click on the file or folder, then choose the Properties command from the shortcut menu. You click the “Advanced” button on the General tab, which gives you access to the Encrypt or the Decrypt option.
 
If you, like me, think that’s a bit much to do, you can add those options to the shortcut menu displayed when you right-clikc the file:
 

1. Open the Registry Editor
2. Navigate through the Registry Editor to HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
3. Create a new DWORD called EncryptionContextMenu and assign it a value of 1