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Re: [IPsec] I-D Action: draft-ietf-ipsecme-ikev1-algo-to-historic-08.txt

Paul Wouters <paul@nohats.ca> Thu, 24 November 2022 16:26 UTC

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Date: Thu, 24 Nov 2022 11:26:46 -0500
From: Paul Wouters <paul@nohats.ca>
To: John Mattsson <john.mattsson@ericsson.com>
cc: Tero Kivinen <kivinen@iki.fi>, "ipsec@ietf.org" <ipsec@ietf.org>
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Subject: Re: [IPsec] I-D Action: draft-ietf-ipsecme-ikev1-algo-to-historic-08.txt
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On Thu, 24 Nov 2022, John Mattsson wrote:

> Not too late to change. According to NIST, 2048-bit MODP Group and 224-bit Random ECP Group are MUST NOT use if the information you
> are protecting have a lifetime longer than 8 years (2031 - today). 1024-bit MODP is two security levels below that. I think IETF in
> generally way to slow if deprecating stuff. I would love to see the following deprecated as well:
> 
> 1024-bit MODP Group with 160-bit Prime Order Subgroup           
> 
> 1536-bit MODP Group
> 
> 192-bit Random ECP Group
> 
> AUTH_HMAC_SHA1_96
> 
> PRF_HMAC_SHA1

With IKEv1 gone, I think we can start an update on 8724/8223 and do
these. As every IKEv2 stack supports SHA2, I think we move SHA1 from
MUST- to MUST NOT    (hears Tero screaming in the distance)

Anyway, I don't think this should be done as part of this IKEv1 to historic document.

Paul

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