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Re: [TLS] EXTERNAL: Re: integrity only ciphersuites

Peter Gutmann <pgut001@cs.auckland.ac.nz> Wed, 22 August 2018 02:52 UTC

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From: Peter Gutmann <pgut001@cs.auckland.ac.nz>
To: Jack Visoky <jmvisoky@ra.rockwell.com>, "Salz, Rich" <rsalz@akamai.com>, "Salz, Rich" <rsalz=40akamai.com@dmarc.ietf.org>, "Fries, Steffen" <steffen.fries@siemens.com>
CC: "ncamwing=40cisco.com@dmarc.ietf.org" <ncamwing=40cisco.com@dmarc.ietf.org>, "tls@ietf.org" <tls@ietf.org>
Thread-Topic: [TLS] EXTERNAL: Re: integrity only ciphersuites
Thread-Index: AQHUOXVWYE9NHymwGkOkdCwKjbQlv6TJsXmAgAADowCAAV3txw==
Date: Wed, 22 Aug 2018 02:51:57 +0000
Message-ID: <1534906315720.1588@cs.auckland.ac.nz>
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Subject: Re: [TLS] EXTERNAL: Re: integrity only ciphersuites
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Jack Visoky <jmvisoky@ra.rockwell.com> writes:

>What we did in ODVA was to add TLS (and DTLS in some cases) to protect this
>communication.

What about using LoRa security?  That's actually a really nice design for a
lot of SCADA environments (particularly for something that came from a behind-
closed-doors background), and not tied to LoRaWAN in any way.  In particular
they took a complete-infrastructure view, not just "we'll specify the crypto,
the rest is someone else's problem", e.g. the concept of device <-> gateway
and device <-> application security, OTA enrolment, etc.  If you're doing M2M
then you don't need TLS, just use LoRa.

Peter.

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