Re: watermarking sucks (Re: stego for the censored II)

On Sun, 11 Feb 2001, Adam Back wrote:

I think a watermark is more likely to be keyed. Without the key it's a bit harder to be sure to remove the watermark without affecting the quality of the image. With the key you can tell which parts of the message to remove.

Of course. The point was that using a watermarking system as-is makes the keys available, and if you appropriate just the stego part, any party with keys available will see that the watermark is not valid and probably hides other data. Sampo Syreeni <decoy@iki.fi>, aka decoy, student/math/Helsinki university