Add EnCrypt & DeCrypt Menu in Windows

Encrypt and Decrypt menu does not appear as a default command menu in windows when we right-click a file.
Encryption process is taken from the ancient Greece, Kryptos meanings hidden. This means scramble data process and use certain code so that data can not be accessed and read by other parties.
Decryption process is the opposite of encryption, the process of inversion of the scramble data into information that can be accessed and read.

Suppose encrypt as a padlock and decrypt as the key to open it.
1. Access Registry editor

2. Click Start, Run, type regedit - Enter.
If the User Account Control appears click Continue.
3. Access this key :
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced

4. Then right click on Advance key => New => DWORD (32 bit) Value

5. Rename the new string to EncryptionContextMenu, Enter.

6. Double click on EncryptionContextMenu, type 1 (one) as a data value. OK.
Restart / logoff.
Decrypt menu will only come out if there are files already encrypt before. Just right click and select decrypt menu on encryption file to open it.
Files that you have encrypt can not be opened by another user, only your user name applied.
It works both on XP & Vista.