Great Circle Associates Firewalls
(October 1997)
 

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Subject: Algorithmically derived passwords
From: sedwards @ sedwards . com
Date: Fri, 24 Oct 1997 14:10:31 -0700 (PDT)
To: Firewalls @ GreatCircle . COM
Reply-to: sedwards @ sedwards . com

I'm curious as to the "list's" opinion of using a "formula" to create
passwords.

One of my clients gives all of their hosts root passwords like:

	first-letter-of-host-name + (last-digit-of-host-name * 3) % 10\
		+ "^" + 3-somewhat-random-letters

Their logic is that it:

) is not susceptible to dictionary based attacks

) is different for each host (as long as the formula is not known)

) is easy to remember or derive (assuming you know the formula)

What do the experts think?

Thanks in advance,
---------------------------------------------------------------------------
Steve Edwards         sedwards @
 sedwards .
 com          Voice: +1-760-723-2727
Newline                                                Fax: +1-760-731-3000



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