Re: [secdir] Secdir last call review of draft-ietf-lisp-rfc6830bis-15

Dino Farinacci <farinacci@gmail.com> Mon, 27 August 2018 01:19 UTC

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Subject: Re: [secdir] Secdir last call review of draft-ietf-lisp-rfc6830bis-15
From: Dino Farinacci <farinacci@gmail.com>
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Date: Sun, 26 Aug 2018 18:19:09 -0700
Cc: Kyle Rose <krose@krose.org>, draft-ietf-lisp-rfc6830bis.all@ietf.org, "lisp@ietf.org list" <lisp@ietf.org>, IETF Discussion Mailing List <ietf@ietf.org>, secdir@ietf.org
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To: Benjamin Kaduk <kaduk@mit.edu>
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> If the PSK does get additionally purposed for encryption, please make sure
> to use a modern key derivation hierarchy to provide separation between the
> authentication and encryption usages.

I would venture to say we wouldn’t use the PSK for that. Our options are to negotiate a shared session key with the asymmetric keys already being used, use DTLS or TLS, or use lisp-crypto and have control messages encapsulated I the LISP data-plane. And yes, the later has 6 cipher suites with combinations of all the latest and greatest in Crypto (but not Edward Curves). 

Dino