Re: [babel] [Babel-users] rather than ripemd160...

"STARK, BARBARA H" <bs7652@att.com> Mon, 26 November 2018 19:48 UTC

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From: "STARK, BARBARA H" <bs7652@att.com>
To: =?iso-8859-1?Q?=27Toke_H=F8iland-J=F8rgensen=27?= <toke@toke.dk>, "Dave Taht" <dave.taht@gmail.com>
CC: Babel at IETF <babel@ietf.org>, babel-users <babel-users@lists.alioth.debian.org>, Juliusz Chroboczek <jch@irif.fr>
Thread-Topic: [babel] [Babel-users] rather than ripemd160...
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Date: Mon, 26 Nov 2018 19:47:59 +0000
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Subject: Re: [babel] [Babel-users] rather than ripemd160...
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FYI. IETF policies re "downrefs" in standards track RFCs is described in
https://tools.ietf.org/html/rfc3967 (and updated by https://tools.ietf.org/html/rfc8067).
In short, it's not prohibited, but careful review is required. 
Note RFC3967 Section 2 first bullet

   There are a number of circumstances in which an IETF document may
   need to make a normative reference to a document at a lower maturity
   level, but such a reference conflicts with Section 4.2.4 of
   [RFC2026].  For example:

   o  A standards track document may need to refer to a protocol or
      algorithm developed by an external body but modified, adapted, or
      profiled by an IETF informational RFC, for example, MD5 [RFC1321]
      and HMAC [RFC2104].  Note that this does not override the IETF's
      duty to see that the specification is indeed sufficiently clear to
      enable creation of interoperable implementations.

Barbara

> Dave Taht <dave.taht@gmail.com> writes:
> 
> > https://tools.ietf.org/html/rfc7693 
is informational. Is that good
> enough?
> 
> That's what I'm not sure about; it's neither standards track nor backed by a
> working group. So someone with more knowledge of IETF process than me
> needs to weigh in here :)
> -Toke
> 
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