From: uri@watson.ibm.com
Date: Fri, 12 Mar 93 09:19:52 PST
To: cypherpunks@toad.com
Subject: FW: Hiding Encrypted Messages
In-Reply-To: <9303112315.AA12701@netmail.microsoft.com>
Message-ID: <9303121718.AA15444@buoy.watson.ibm.com>
MIME-Version: 1.0
Content-Type: text/plain



-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: uri@watson.ibm.com
Originator-Key-Asymmetric:
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MIC-Info: RSA-MD5,RSA,
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Stu Klingman writes:
 > Someone wrote:
 > > b) If it's played and recognized - one can trace your source (a CD, a
 > >    tape of radio broadcast, whatever) and do a comparison. Then the
 > >    file containing of all the LSBs is cryptanalyzed...
 >
 > Actually, this is not really a problem.  The odds of being able to
 > resample, even using the same source and come up with the same byte
 > string is infinitesmal.

Remember - the goal is to HIDE the fact, that there's a message!
If, having CDs and DAT tapes widely available, somebody sends
a home-brew digitized copy of it, won't it look somewhat
suspicious for KGB?  And if/when they throw you in a
nice small cell, you can explain your innocence
to the walls at infinitum (:-).

 > You've got chaos theory on your side here
 > with massive "Sensitive Dependence on Initial Conditions."

You're certainly right. But still see above.

 > Just make sure to an application like Shredder or Flamefile to
 > permanently erase your initial sample, and nobody should be able
 > to tell. (unless they are aware of the trick beforehand)

Do you mean, THEY don't monitor this forum? (:-)

Regards,
Uri.
- ------------
<Disclaimer>
-----END PRIVACY-ENHANCED MESSAGE-----