DMP(Document Management and Protection, developed by W&Jsoft Inc.) is a centralized document management system for enterprises. DMP provides features including, document life cycle management, access control, version control, audit report, approval process, full text search and file protection. DMP Viewer is a mobile client for DMP system. It can communicate with DMP to retrieve documents from the server, decrypt the cipher context, display and protect the content of files base on permission control. W&Jsoft Inc., founded in 1996, is a software development company dedicating to provide enterprise document management and protection solutions to customers. There are three major product lines, and they are DMP(Document Management and Protection), D-Security(Document Security) and ADP(Application Document Protection) systems.