[9670] in cryptography@c2.net mail archive
Re: limits of watermarking (Re: First Steganographic Image in the Wild)
daemon@ATHENA.MIT.EDU (Matt Crawford)
Wed Oct 17 12:30:31 2001
Date: Wed, 17 Oct 2001 10:26:55 -0500
From: Matt Crawford <crawdad@fnal.gov>
In-reply-to: "17 Oct 2001 10:23:03 BST." <3BCD4DF7.204FD708@algroup.co.uk>
To: Ben Laurie <ben@algroup.co.uk>
Cc: cryptography <cryptography@wasabisystems.com>
Message-id: <200110171526.f9HFQtP27264@gungnir.fnal.gov>
> a) I believe physical media will always have higher bandwidth than
> broadband - why? Because you have to feed the broadband from somewhere,
> and archive it somewhere.
You can use an expensive physical medium to drive your transmission.
If you sell atoms, you have to use a cheap medium.
> It seems to me that putting the details of the purchaser in plaintext on
> the beginning of the file and making it illegal to remove it is as good
> a protection as you are ever going to get - but that would ruin a whole
> bunch of business plans, so I guess no "expert" is going to admit that.
On this, I agree. Just like some more mundane security issues, you
can heap endless layers of mummery and confusion on top, but at the
bottom you often find a "secret" in long-term storage in the clear.
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