WinRAR uses the basic tutorial for encryption compression

Encrypting compressed Files

Step one, aiming at the file to be compressed, click right to select "Add to Compressed file ...";

Step two, in the pop-up dialog box top Point "advanced" label;

Step three, after entering the "Advanced" interface, click on the right middle of the "Set Password ..." button,

Step four, enter the password in the Password box, note two input to the same, password set must be firmly remembered, if forgotten, compressed files will not open;

Step five, unzip the file with the password, will prompt input password, input password normal decompression, or will be prompted to fail;