1996-03-02 - Re: Chaff in the Channel (Stealth PGP work)

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From: “Powers Glenn” <Q101NOW@st.vse.cz>
To: cypherpunks@toad.com
Message Hash: 80e992deb60f64450a8b523a003827c8aa180ee63ae9ef26c8931656ff9a6477
Message ID: <E87A6630BA@st.vse.cz>
Reply To: N/A
UTC Datetime: 1996-03-02 12:41:46 UTC
Raw Date: Sat, 2 Mar 1996 20:41:46 +0800

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From: "Powers Glenn" <Q101NOW@st.vse.cz>
Date: Sat, 2 Mar 1996 20:41:46 +0800
To: cypherpunks@toad.com
Subject: Re: Chaff in the Channel (Stealth PGP work)
Message-ID: <E87A6630BA@st.vse.cz>
MIME-Version: 1.0
Content-Type: text/plain


-     However, I suspect that the ideal would be like cryptography:
- Assume the enemy knows everything about your system but the keys.
- Thus, your gifs need to look like normal gifs in the lsb.  Your audio
- needs to have normal levels of hiss in it.  Etc.

    the problem with many current stego programs (jsteg/stools) is 
that given a data stream, they will tell you if there is data steg'ed 
(by the same program, of course) it in. jsteg goes out of it's way to 
hide it's content-length header, but jsteg can still detect jsteg 
headers...

glenn





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