Added: (Wed Mar 15 2017)
Pressbox (Press Release) -
This simple and fast program will be useful in those cases when it is necessary set password to pdf document in the absence of tools for working with such files. PDF protect with this utility can be installed both to open a document and to separate manipulations with it. To do this, the program provides for setting a user password and setting the owner password. The user's password is placed on the opening of the pdf file, and the owner's password gives access to individual operations with the document, for example, copying or editing. Users can choose the type of encryption pdf file: 40-bit RC4, 128-bit RC4, 128-bit AES, 256-bit AES. The interface of the program is simple and intuitive. The utility can be used on computers or laptops with the Windows operating system.
URL software: http://pasprog.com/pdf-password-lock.php
URL company: http://pasprog.com