An apparatus for providing a Digital Rights Management (DRM) service is provided. The apparatus includes a Media Presentation Description (MPD) information configurer for determining a DRM system required in each of representations of content provided by an adaptive streaming service, classifying the representations into one or more groups according to predetermined criteria, and configuring MPD information by inserting content protection information including representation group information representing classified groups and information about DRM systems corresponding to the representation group information; and a communication unit for transmitting the MPD information to a user terminal receiving the content.