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List:       freebsd-isp
Subject:    RE: Question about ways to do eMail authintication.
From:       "Troy Settle" <troy () picus ! com>
Date:       2000-06-23 11:43:08
[Download RAW message or body]


We do this using PHP.  The key we generate and email to the user is
something like this:

   $key = substr(md5($username . $email . $time . $REMOTE_HOST),0,8)

It's not perfect, but it's sufficient to prevent guessing, and has
worked well enough for us over the last couple years.  Similar functions
are availiable in perl and can also be duplicated in a simple shell
script (/sbin/md5).

G'luck,

--
  Troy Settle
  Network Analyst
  Picus Communications
  540.633.6327


** -----Original Message-----
** From: owner-freebsd-isp@FreeBSD.ORG
** [mailto:owner-freebsd-isp@FreeBSD.ORG]On Behalf Of
** schluntz@timberwolf.workofstone.net
** Sent: Thursday, June 22, 2000 6:17 PM
** To: Danny
** Cc: freebsd-isp@freebsd.org
** Subject: Re: Question about ways to do eMail authintication.
**
**
**
** In message <00062408211500.00297@dannyh.freebsd.org>, Danny writes:
** >- Digitial Signatures?
** >- Digital signature does use the hashing technique
** >-Hope that helps
**
** I've got a couple of ideas on how to do it, but I really
** don't want to have
** to build it myself.  I'm hoping someone knows of a package that does
** something like it already (like some mail-list software
** packages do, you
** have to respond to them before they subscribe you.)
**
** Thanks for the feedback though!
**
** -Sean
**
**
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