Program to read books in encrypted format pdf

PDF-XChange Viewer - a convenient and feature-rich program for viewing and editing PDF- documents. Is a full replacement for the famous Adobe Readera . PDF-XChange Viewer has a simple multilingual interface , high speed and number of features that help make your work easier and enjoyable.Main Features PDF-XChange Viewer:

    View and print files of PDF. While viewing a document , you can change the font size and pictures that are in it.

Program to read djvu

Many people use the program to read different formats.
Format became very popular format. .djvu
He lived by the fact that it is easy to gather books of pictures
and photos. You can also convert scanned documents without recognition. Djvu solo program used to read 

the documents format .dijvu. There are certainly many other programs to read this format, but for some