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Path: utzoo!mnetor!seismo!think!mit-eddie!baldwin
From: baldwin@mit-eddie.MIT.EDU (Robert W. Baldwin)
Newsgroups: net.crypt
Subject: Crypt Breakers Workbench release
Message-ID: <3169@mit-eddie.MIT.EDU>
Date: Wed, 10-Sep-86 10:14:58 EDT
Article-I.D.: mit-eddi.3169
Posted: Wed Sep 10 10:14:58 1986
Date-Received: Wed, 10-Sep-86 20:16:37 EDT
Organization: M.I.T. EE/CS Computer Facility, Cambridge MA
Lines: 59
Keywords: crypt, cryptanalysis, cipher, cbw


	It looks like I'm not going to get around to improving the
documentation for the Crypt Breakers' Workbench or adding any new
features.  I am releasing it now for others to play with and improve.
I have placed it on eddie.mit.edu, which is also ihnp4!mit-eddie.uucp.
See below for details.

	The CBW program is an interactive window-based workbench of tools
for cracking the Unix file encryptor.  The user selects a tool (like
probable word guessing) and sets its parameters.  The program runs the tool
and displays the results.  The user can accept or reject the result, make
slight improvements to the result, and select a new tool or parameter
setting.  With practice, it takes about 20 minutes to crack a file of text,
or a mail message with the header information still attached.  The program
has features for batch mode operation, but they are not directly accessible.

	The source for CBW is available as a Unix BSD4.2 tar file.
The program is written in C, and it was developed on a Vax running BSD
4.2 Unix.  It works best on real DEC vt100 terminals because it used
the vt100 graphics characters (also on Wyse terminals).  The documentation
describes how to fix this problem.

	The program is distributed as is with the source.  If you don't
like some feature feel free to change it.  If you are not willing to
play with the program and/or the source, don't bother getting it.
It is not a turn-key system.

	The program needs several changes to run under System V.  The
file screen.c must be changed to deal with the window oriented interface
of System V instead of the job oriented interface of BSD Unix.  Also
some of the file names are longer than 14 characters long, and System V,
for all its improvements, still can't handle long file names.  Your best
bet is to edit the tar file before unpacking it.


	To retreive the source:

1. Connect to mit-eddie.arpa (eddie.mit.edu or ihnp4!mit-eddie.uucp)

2. Login with user name 'anonymous' and password 'guest'.

3. Retreive /usr/spool/uucppublic/cbw.tar
   The file fdes.tar contains some fast routines for DES.  They can
   form the heart of a file encryptor or a password cracker, though
   I am not releasing sufficient code to build either application.

4. Get a cup of coffee while the half megabyte of source filters
   though the network.

5. Make a directory to hold the source.

6. Unpack the source using
   tar -xf cbw.tar

7. Execute 'make' with no arguments.

8. While you are waiting for make to finish, see Read.me for
   an introduction and testing details.  The file cbw.doc is
   a users manual, though it should be rewritten.