OPENS CA Server
- The certificate server, compliant with the ITU-T X.509 standard, plays a pivotal role in issuing and managing certificates for the OPENS DRM Packager, License Server, and Client. 
OPENS DRM Packager
- The OPENS DRM Packager aligns with W3C’s EPUB security guidelines and adheres to the ISO international standards (ISO TS 23078). 
OPENS DRM Streaming Server
- The OPENS DRM Streaming Server delivers encrypted e-books through streaming, serving only the resources requested by the Client, which were previously encrypted by the OPENS DRM Packager. 
OPENS License Server
- The OPENS License Server is responsible for issuing licenses that grant permission for content use.It provides flexibility in configuring various permission conditions, such as duration and printing. 
OPENS DRM Client
- The OPENS DRM Client is a module designated to manage DRM processes within the e-Book viewer.It’s compatible with Windows, iOS, and Android operating systems and applications. 


