Vulnerability Development mailing list archives
Re: SDMI - The way I would make the water mark.
From: "Bluefish (P.Magnusson)" <11a () GMX NET>
Date: Sat, 14 Oct 2000 23:10:16 +0200
Again, this is an old method which I remember discussed at my computer security class :-) ... An attack would include move "notes" randomly a few MS, or copying some notes a few MS. Basicly, as of today, there aren't any watermarking which really works. OK, if the technice is known, applying all attacks will cause noticeable damage, but if you only aim for certain watermarks it seems you can remove it without causing much more damage than adding it allready did. Assuming no one has a totally new technice, though I sincerly doubt it ;) ..:::::::::::::::::::::::::::::::::::::::::::::::::.. http://www.11a.nu || http://bluefish.11a.nu eleventh alliance development & security team http://www.eff.org/cafe On Fri, 13 Oct 2000, Richard Rager wrote:
Ok I have an idea how the SDMI lives thought the wav - mp3 - wav and DA -> AD -> DA. Music is make up of notes. If the note was moved 200MS either way with a known pattern the the music can be water mark and be converted to MP3 back to WAV and still see it. The human ear would not hear it. Enjoy, Richard Rager
Current thread:
- hacksdmi? Blue Boar (Oct 11)
- Re: hacksdmi? Ralph Moonen (Oct 11)
- Re: hacksdmi? Masial (Oct 12)
- Re: hacksdmi? Daniel Petzen (Oct 13)
- Re: hacksdmi? Steve Mosher (Oct 13)
- SDMI - The way I would make the water mark. Richard Rager (Oct 13)
- Re: SDMI - The way I would make the water mark. Robert Collins (Oct 13)
- Re: SDMI - The way I would make the water mark. buggz (Oct 13)
- Re: SDMI - The way I would make the water mark. Steve Mosher (Oct 13)
- Re: SDMI - The way I would make the water mark. Ben Galehouse (Oct 14)
- Re: hacksdmi? Masial (Oct 12)
- Re: SDMI - The way I would make the water mark. Bluefish (P.Magnusson) (Oct 14)
- Re: hacksdmi? Ralph Moonen (Oct 11)
- Re: hacksdmi? Ralph Moonen (Oct 13)
- Re: hacksdmi? Masial (Oct 13)
- Re: hacksdmi? spiff (Oct 14)
- Message not available
- Re: SDMI - The way I would make the water mark. Ralph Moonen (Oct 14)
- Re: hacksdmi? Steve Mosher (Oct 12)
- Re: hacksdmi? David Knaack (Oct 12)
- Re: hacksdmi? Robert Johnson (Oct 13)
- Re: hacksdmi? Robert A. Seace (Oct 13)