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Re: [Cfrg] Word-lists for Diffie-Hellman and Fingerprints

Derek Atkins <derek@ihtfp.com> Fri, 25 August 2017 14:15 UTC

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From: Derek Atkins <derek@ihtfp.com>
To: Aaron Zauner <azet@azet.org>
Cc: IRTF CFRG <cfrg@irtf.org>, Werner Koch <wk@gnupg.org>, prz@acm.org, Moxie Marlinspike <moxie@thoughtcrime.org>
References: <23B4CF16-6E26-4674-B128-DCB3FCC5A97F@azet.org>
Date: Fri, 25 Aug 2017 10:15:41 -0400
In-Reply-To: <23B4CF16-6E26-4674-B128-DCB3FCC5A97F@azet.org> (Aaron Zauner's message of "Thu, 24 Aug 2017 19:32:10 +0200")
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Subject: Re: [Cfrg] Word-lists for Diffie-Hellman and Fingerprints
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Hi,

Aaron Zauner <azet@azet.org> writes:

> Hi,
>
> A recent Twitter discussion [0] prompted me to look up any IETF
> documents specifying "PGP word lists" [1] as in use for for short
> authentication strings (SAS) in ZRTP and e.g. Signal. Apparently
> there's no such document, nor any other document that concerns
> word-lists that humans can easily read, say and hear/comprehend. GPG
> implements the ICAO phonetic alphabet as a command line option
> (`--with-icao-spelling`). This is nice, but I'd rather have a
> key-signing party that sounds like drunk anthropologists than forward
> air controllers having fun.  I've considered a patch. As the OpenPGP
> WG has been "closed", I'm unsure where to take this topic to, but CFRG
> seems to be a good place to ask.

Have you looked at S/Key?  (RFC1760)?

It's not specific to PGP, but it does give a possible mapping.

-derek
-- 
       Derek Atkins                 617-623-3745
       derek@ihtfp.com             www.ihtfp.com
       Computer and Internet Security Consultant

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