Provided are domain contexts indicating user and device based domain systems for being applied to a new digital content protection/management system, and management methods thereof. A concept of “domain” is introduced in the present invention so that various business models can be obtained in accordance with content use of one home or small-sized group. The domain refers to as a group of user and device SAV and PAV indicating a context for being applied to the domain system includes: a domain identifier for specifying a domain as a region containing at least one content execution device and at least one content user; domain authentication information for guaranteeing authenticity of the domain; a user list containing information of users belonging to the domain; and a device list containing devices belonging to the domain.