[net.crypt] Decryption Program

jasond@mtuxo.UUCP (j.demont) (10/11/86)

I am academically interested in obtaining a program for aiding in the
decryption of simple substitution ciphers.  Are there any available
programs or algorithms in public domain?

Thanks,

Jason De Mont
AT&T
mtuxo!jasond

levy@ttrdc.UUCP (Daniel R. Levy) (10/12/86)

In article <2121@mtuxo.UUCP>, jasond@mtuxo.UUCP (j.demont) writes:
>I am academically interested in obtaining a program for aiding in the
>decryption of simple substitution ciphers.  Are there any available
>programs or algorithms in public domain?
>
>Thanks,
>
>Jason De Mont
>AT&T
>mtuxo!jasond

How about /usr/bin/tr :-)
-- 
 -------------------------------    Disclaimer:  The views contained herein are
|       dan levy | yvel nad      |  my own and are not at all those of my em-
|         an engihacker @        |  ployer or the administrator of any computer
| at&t computer systems division |  upon which I may hack.
|        skokie, illinois        |
 --------------------------------   Path: ..!{akgua,homxb,ihnp4,ltuxa,mvuxa,
	   go for it!  			allegra,ulysses,vax135}!ttrdc!levy

outer@utcsri.UUCP (Richard Outerbridge) (10/14/86)

> I am academically interested in obtaining a program for aiding in the
> decryption of simple substitution ciphers.  Are there any available
> programs or algorithms in public domain?

Software to assist in the solution of several of the basic types of ciphers
is readily available from members of the American Cryptogram Association.

A lot of it is in one or another dialect of BASIC, and most of it has been
written for one or another variety of home computer.  Some of it is very
slick - it's amazing what you can do with an online dictionary, some pattern
word lists, and digraph frequency counts.  The co-ordinator of the A.C.A.'s
computer supplement (I guess he's really its Editor) is an enthusiastic chap
who will probably be more than willing to help you find what you need or at
least point you at the right person.

Besides the semi-annual computer supplement, the bi-monthly >Cryptogram<
carries a computer column which discusses using PC's to assist solving.
The programming is intentionally pitched at computer novices, but the 
cryptanalysis represents the distillation of the body of amateur expertise
built up by the Krewe over the past thirty years or so.

Anyway, the person to write to is:

	Mike Barlow
	5052 Chestnut Ave
	Pierrefonds, Quebec,
	CANADA       H8Z 2A8

Tell him you got his name from me; that will give him another thing to
curse me for!

Richard Outerbridge
Secretary,
American Cryptogram Association
-- 
Richard Outerbridge	<outer@utcsri.UUCP>	 (416) 961-4757
Payload Deliveries:	N 43 39'36", W 79 23'42", Elev. 106.47m.