From: Jason McIntyre <jmc@kerhand.co.uk>
Subject: Re: mention M-209 in crypt(3) history
To: tech@openbsd.org
Date: Thu, 9 Jan 2025 07:13:04 +0000

On Thu, Jan 09, 2025 at 03:07:31PM +1100, Jonathan Gray wrote:
> When describing v3 crypt, be specific as to which rotor machine.
> 
> "Crypt is an exact implementation of Boris Hagelin's cryptographic
> machine called the M-209 by the U. S. Army"
> From the third edition manual, crypt(I).
> 
> Index: lib/libc/crypt/crypt.3
> ===================================================================
> RCS file: /cvs/src/lib/libc/crypt/crypt.3,v
> diff -u -p -r1.45 crypt.3
> --- lib/libc/crypt/crypt.3	6 Apr 2015 20:49:41 -0000	1.45
> +++ lib/libc/crypt/crypt.3	9 Jan 2025 02:58:47 -0000
> @@ -125,7 +125,7 @@ on failure.
>  .Xr getpass 3 ,
>  .Xr passwd 5
>  .Sh HISTORY
> -A rotor-based
> +A M-209 based
>  .Fn crypt
>  function appeared in
>  .At v3 .
> 

hi. i think that should be "An M-209", supposing that it's read
"em-209".

jmc