Re: [babel] [Babel-users] HMAC Key rotation key format (was ripemd)

Juliusz Chroboczek <jch@irif.fr> Sun, 02 December 2018 22:19 UTC

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Date: Sun, 02 Dec 2018 23:18:45 +0100
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From: Juliusz Chroboczek <jch@irif.fr>
To: Ted Lemon <mellon@fugue.com>
Cc: Dave =?ISO-8859-1?Q?T=E4ht?= <dave@taht.net>, Babel at IETF <babel@ietf.org>, keyur@arrcus.com, babel-users@lists.alioth.debian.org, Mahesh Jethanandani <mjethanandani@gmail.com>, bew@cisco.com
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Subject: Re: [babel] [Babel-users] HMAC Key rotation key format (was ripemd)
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> FWIW, for homenet the thought was to use HNCP to distribute keys amongst
> routers.

HNCP is not a good choice for symmetric key distribution, since it floods
all information across the HNCP domain.  It's impossible to use HNCP to
distribute a key to some routers only while keeping it secret from others.

-- Juliusz