Secure Delivery of Compressed Audio by Compatible Bitstream Scrambling
Eric Allamanche, Jürgen Herre · Journal of the Audio Engineering Society · 2000
The recent technological revolutions in both networking technology (the Internet) and highly efficient perceptual audio coding algorithms (e.g. MPEG audio) have stimulated attractive new applications but also a considerable amount of music piracy. In order to enable a controlled distribution of multimedia content, classical data encryption techniques have been proposed to provide a “secure envelope” around the multimedia payload by means of ciphering all or parts of it. This paper presents a novel approach of securing compressed digital audio by integrating both ciphering and source coding methods into a single scheme.