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 butalso a considerable amount of music piracy. In order to enable a controlleddistribution of multimedia content, classical data encryptiontechniques have been proposed to provide a “secure envelope” aroundthe multimedia payload by means of ciphering all or parts of it. Thispaper presents a novel approach of securing compressed digital audioby integrating both ciphering and source coding methods into a singlescheme.
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