[6414] in cryptography@c2.net mail archive
Re: Blue Spike and Digital Watermarking with Giovanni
daemon@ATHENA.MIT.EDU (Paul Crowley)
Mon Jan 17 12:50:28 2000
To: Eugene Leitl <eugene.leitl@lrz.uni-muenchen.de>
Cc: cryptography@c2.net
From: Paul Crowley <paul@hedonism.demon.co.uk>
Date: 17 Jan 2000 07:54:48 +0000
In-Reply-To: Eugene Leitl's message of "Sun, 16 Jan 2000 17:40:14 -0800 (PST)"
Message-ID: <8766wtw2t3.fsf@hedonism.demon.co.uk>
Eugene Leitl <eugene.leitl@lrz.uni-muenchen.de> writes:
> Well, the deformations must be smooth, so this just describes an
> attack against a certain type of watermarks.
Yes. They found that there was one watermarking product on the market
that was not defeated by their standard mechanism, and developed a new
mechanism that defeated that one too.
Of course, the state of the art in watermarking may have moved on
since that paper was written, but if anyone knows of a watermarking
product for images that has not already been defeated I'd be
interested to know.
--
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\/ o\ paul@hedonism.demon.co.uk Got a Linux strategy? \ /
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