It allows you to add the password for opening the PDF file and the owner password that allows you to make changes to the file. Simply browse your computer and add the files that you would like to encrypt. IStonsoft PDF Encyption is a neat software solution that you can use in order to encrypt your PDF files, it takes advantage of three AES and RC4 encryption levels. It sports a clean and intuitive graphical interface with many nice tools at hand. The application doesn't take long to install and it doesn't come with a complicated setup that you would need to complete before you can actually use it. It's a neat software solution that you can use in order to encrypt your PDF files, it takes advantage of three AES and RC4 encryption levels.

The Internet is filled with all sort of applications and programs that you could use in order to manage your files.