A great feature of ZIP files is that you can add a password to them as a layer of security. That way, if some unknown party gets its hand on the file, they won’t be able to view or extract any ...

But what kind of encryption it provides depends on the program you use to create and open the ZIP file. The .zip format supports two forms of encryption and password protection.

Launch a RAR decompression utility like WinRAR, RAR File Open Knife or 7-Zip. Open the RAR file and select the extract feature on your utility. Enter the password for the file when prompted ...

With the file open in Pages, Numbers, or Keynote, select File and then Set Password to choose and apply your password.