Re: [lamps] Adam Roach's Comment on draft-ietf-lamps-cms-mix-with-psk-06
Adam Roach <adam@nostrum.com> Wed, 21 August 2019 21:32 UTC
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To: Russ Housley <housley@vigilsec.com>
Cc: IESG <iesg@ietf.org>, LAMPS WG <spasm@ietf.org>
References: <38527132-0951-49CF-A043-A39B206BB0B7@vigilsec.com>
From: Adam Roach <adam@nostrum.com>
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Date: Wed, 21 Aug 2019 16:31:50 -0500
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spasm/kKTbV599QEIP-rABeJwRTQmalyc>
Subject: Re: [lamps] Adam Roach's Comment on draft-ietf-lamps-cms-mix-with-psk-06
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On 8/21/19 3:57 PM, Russ Housley wrote: > Adam: > > I was looking for something else and I stumbled across your COMMENT on draft-ietf-lamps-cms-mix-with-psk-06. > >> Thanks for the work on this document. It seems like a useful tool >> to add to the crypto toolkit, and it does a good job of explaining >> exactly how to apply the described technique. I have one minor >> comment. >> >> §7: >> >> I don't generally have a deep understanding of the math behind >> encryption, and I didn't take the time to really align the technique >> in this document with the bit of crypto that I do understand, so >> forgive me if this is a naive observation: I was somewhat surprised >> to see no text in here regarding the advisability (or lack thereof) >> regarding re-use of PSKs across different sessions. > > I suggest this additional sentence to Section 2 to address your comment: > > A PSK is expected to be used with many messages, with a > lifetime of weeks or months. Yep, that sounds good to me. Thanks! /a
- [lamps] Adam Roach's Comment on draft-ietf-lamps-… Russ Housley
- Re: [lamps] Adam Roach's Comment on draft-ietf-la… Adam Roach