Vulnerability Development mailing list archives

Re: hacksdmi?


From: "Bluefish (P.Magnusson)" <11a () GMX NET>
Date: Fri, 20 Oct 2000 20:50:04 +0200

My own take is that if any type of SDMI type initiative is going to be
successful, the watermarking will need to be outside the audio stream.
For example, bands could release MP3s encrypted with their private keys.
The files could be freely distributed, but for playback you would need
to purchase the decryption key from a CA. In the case of a service like
Napster, they would just need to check that they were distributing the
encrypted files only.

So, what you are saying is that you
  a) 'outlaw' MP3/WAV and forbid any SDMI semi-compatible player/converter
  b) 'outlaw' MP3/WAV and forbid keysharing/trading

The point with watermarks is to still any normal media handling, while
still being able to detect copyrighted work floating around the net. A new
enciphered music initive doesn't add any security (as you must deliver
keys to aribitery users, possibly malicious ones) and causes severly
unwanted limitations. IMHO, this is several times worse than watermarking.

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