Provided is an apparatus for controlling storage and playback of digital
broadcasting contents. The apparatus can control a broadcasting content
to be recorded and stored, temporarily stored, and played back while
protecting and managing it securely. The apparatus of the present
research includes: a control information providing unit for generating
control information for recording storage, temporary storage, and
playback of a broadcasting content, using the control information as
watermarking information, multiplexing and scrambling the broadcasting
content including the control information, and outputting a scrambled
transport; and a storing and playback unit for storing the broadcasting
content by using the control information, comparing the control
information stored together with the broadcasting content with control
information added as watermarks, and determining whether to play back the
broadcasting content.