From: Black Unicorn <unicorn@schloss.li>
Date: Mon, 4 Mar 1996 08:18:38 +0800
To: "David K. Merriman" <merriman@arn.net>
Subject: Re: Duress
In-Reply-To: <2.2.32.19960303090718.006a7d38@arn.net>
Message-ID: <Pine.SUN.3.91.960303182704.5238A-100000@polaris.mindport.net>
MIME-Version: 1.0
Content-Type: text/plain


On Sun, 3 Mar 1996, David K. Merriman wrote:

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> 
> >As a side remark, every burglar alarm connected to a phone that I've ever seen
> >has this feature: a code that one can type under duress that will both turn
> >off the alarm and call for help. I wonder how many users will remember this
> >code when under duress.
> >
> 
> Many (if not most) alarm companies make the duress code the *reverse* of the normal code.

This might backfire in the case of self-destructing data.

If the attacker backs up the data, and enters the duress code, the real 
code is easy to guess the second time around.

> 
> Dave Merriman
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> 

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