Re: [netconf] Roman Danyliw's No Objection on draft-ietf-netconf-sztp-csr-12: (with COMMENT)

Russ Housley <housley@vigilsec.com> Thu, 16 December 2021 14:50 UTC

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From: Russ Housley <housley@vigilsec.com>
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Date: Thu, 16 Dec 2021 09:50:20 -0500
Cc: IESG <iesg@ietf.org>, draft-ietf-netconf-sztp-csr@ietf.org, netconf-chairs@ietf.org, netconf@ietf.org, mjethanandani@gmail.com
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To: "Roman D. Danyliw" <rdd@cert.org>
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Subject: Re: [netconf] Roman Danyliw's No Objection on draft-ietf-netconf-sztp-csr-12: (with COMMENT)
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> ** Section 4.1.1.
> 
> For instance, an NMS controller/orchestrator
>   application could periodically prompt the SZTP-client to generate a
>   new private key and provide a certificate signing request (CSR) or,
>   alternatively, push both the key and an identity certificate to the
>   SZTP-client using
> 
> I don’t have a sense of the classes of endpoints that would rely on SZTP. 
> Would it include highly constrained or battery powered devices for which this
> re-keying would be too expensive?

Sure.  Perhaps we should say that devices with the power and computation resources should periodically generate fresh keying material.

Russ