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Re: [Iotops] OPC UA FLC and TLS

Michael Richardson <mcr+ietf@sandelman.ca> Thu, 29 July 2021 18:39 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Eliot Lear <lear@lear.ch>, Christer Holmberg <christer.holmberg=40ericsson.com@dmarc.ietf.org>, "iotops\@ietf.org" <iotops@ietf.org>
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Date: Thu, 29 Jul 2021 14:38:56 -0400
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Subject: Re: [Iotops] OPC UA FLC and TLS
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Eliot Lear <lear@lear.ch> wrote:
    > On 29.07.21 13:20, Christer Holmberg wrote:
    >>
    >> When I watched the YouTube video from them iotops session someone claimed
    >> that OPC UA FLC “re-invented” TLS. What was meant by that?
    >>
    > That was my mistake.  Other organizations (not OPC UA) have reinvented TLS,
    > but OPC UA is just out of date, so far as I can tell.[1]

My understanding is that OPC UA has a legacy DCOM based system that uses RSA
signature for authentication, but is not related to TLS/SSL/etc.
But that they use TLS and DTLS (1.3 even) in the latest specifications.

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