WINRAR

WinRAR is one of the utilities or tools that can be used to reduce (compress) the size of files other than that winzip can also be used to protect the compressed file. So if someone wants to open or want to see the contents of compressed files must enter a password. If you do not know the password then the file can not be opened.
To perform compression and file protection do the following:
1. Open windows explorer, right click on files or directories you want to compress select WinRAR => Add to archive ... (in this example I will compress files of PC Media)
 2. To create a password on a file compressionSelect the Advanced tab, click the button sets the password 
3. In the dialog box that appears enter passwordClick OK
 4. So the file compression will be made (see in windows explorer) 
5. To open, right-click the fileChoose extract hereEnter password6. Unzipnya file will be created