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Re: OneTimePasswd (not Pad)

To: [email protected] (Laurent Demailly)
Subject: Re: OneTimePasswd (not Pad)
From: Adam Shostack <[email protected]>
Date: Fri, 13 Oct 1995 10:29:51 -0400 (EDT)
Cc: [email protected]
In-Reply-To: <[email protected]> from "Laurent Demailly" at Oct 13, 95 01:50:01 pm
Sender: [email protected]


| I'm about to implement an OTPasswd (mostly like s/key) scheme to my
| www browsers/clients/proxy, but I was wondering is the mere principle
| of storing H^n(S) and requesting H^(n-1) from peer (H beeing your
| favorite one way strong hash function (MD5), and S your seed+secret
| passwd) could possibly be patented somehow and thus preventing using a
| similar scheme without getting a license (from
| bellcore?),.... if there are any usage conditions/restrictions?,... 

	There is an IETF working group standardizing OTPassword
technology.  not sure how active it still is.
ietf-otp-request@@bellcore.com 

Adam


-- 
"It is seldom that liberty of any kind is lost all at once."
					               -Hume

References:
- OneTimePasswd (not Pad)
  - From: Laurent Demailly <[email protected]>

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