In article <4i91h4$lp5@nero.omega.co.nz>, bruce@omega.co.nz wrote:
Doe anyone know where sample code exists to enable one to read the digital stream from an audio CD? <edit> crypto system. You merely start reading at a specific spot, tossing away bytes using a reproducable random number generator, then permuting those to form a XOR one time key of any length you want.
The "entropy" or randomness of audio data is LOW. That's why audio compresses so well. However, the idea of keeping a one-time key on CD-ROM is good.
CD-ROM--good. CD-Audio--weeeelll...could be trouble. Keep in mind Red Book audio does not require 100% error correction, so it would be pretty likely the keys would not match given the tiniest data hiccup. A data mode should work (i'd think). <edit>Then you can send up to 600M of totally secure data before you
dispose of the disks (Microwave oven is fun :) and write a new pair.
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