Is there an easy way to add password to pdf documents within 3 steps?

Is there a simple way for me to add password to pdf documents? I have searched such a tool on the internet for quite a long time, finally I find WowTron PDF Encryption. It is a powerful pdf encryption software to go over password protection for Adobe PDF documents and disable the print, copy, & edit functionality of a pdf document. Enjoy!

It is easy for users to add password to pdf documents within 3 steps:

Step1: Download WowTron PDF Encryption: 

Please download and install the app, it will take you 10 seconds.

Step2:ImportPDF Files

Ater installing the app, you can add pdf files.

Step3:Export pdf documents.