Re: Help; I need a 90% solution

Article View: sci.crypt

Article #4121

#4121

From: Doug Gwyn
Date: Sat, 12 Mar 1988 08:55

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In article <3350001@hpcvlx.HP.COM> ben@hpcvlx.HP.COM (Benjamin Ellsworth) writes:
>I have a document with troff format commands imbedded in it.  I have
>the troff output.  I had encrypted the file using UN*X crypt.  Now I 
>cannot remember the password. 
>
>Does having the vast majority of the plaintext available make the 
>decryption easier?  Easy enough to try it?

The UNIX "crypt" utility does not use DES; it's based on a junior
version of the Hebern machine (a la Enigma).  The "Crypt Breaker's
WorkBench" (posted to one of the source newsgroups some time during
the past year) is up to the task of reconstructing the plaintext
given some probable words.  It can even do so without probable words,
although it takes more work.  If you don't have CBW, perhaps someone
knows where you can get it, or contact me by E-mail and we can
discuss the options.

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Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!cmcl2!brl-adm!brl-smoke!gwyn

References: <3350001@hpcvlx.HP.COM>

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Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!cmcl2!brl-adm!brl-smoke!gwyn
From: gwyn@brl-smoke.ARPA (Doug Gwyn )
Newsgroups: sci.crypt
Subject: Re: Help; I need a 90% solution
Message-ID: <7441@brl-smoke.ARPA>
Date: 12 Mar 88 08:55:43 GMT
References: <3350001@hpcvlx.HP.COM>
Reply-To: gwyn@brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 16

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