Re: [secdir] SECDIR review of draft-ietf-ipsecme-rfc4307bis-15

Ben Laurie <benl@google.com> Thu, 19 January 2017 18:15 UTC

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From: Ben Laurie <benl@google.com>
Date: Thu, 19 Jan 2017 18:15:30 +0000
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To: Yoav Nir <ynir.ietf@gmail.com>
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Cc: Phillip Hallam-Baker <phill@hallambaker.com>, draft-ietf-ipsecme-rfc4307bis.all@ietf.org, "secdir@ietf.org" <secdir@ietf.org>
Subject: Re: [secdir] SECDIR review of draft-ietf-ipsecme-rfc4307bis-15
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On 18 January 2017 at 15:03, Yoav Nir <ynir.ietf@gmail.com> wrote:
>
> On 18 Jan 2017, at 14:42, Ben Laurie <benl@google.com> wrote:
>
> Aren't we supposed to be deprecating 5114 primes?
>
>
> Sure:
>
>    Group 22, 23 and 24 are MODP Groups with Prime Order Subgroups thater
>    are not safe-primes.  The seeds for these groups have not been
>    publicly released, resulting in reduced trust in these groups.  These
>    groups were proposed as alternatives for group 2 and 14 but never saw
>    wide deployment.  It has been shown that Group 22 with 1024-bit MODP
>    is too weak and academia have the resources to generate malicious
>    values at this size.  This has resulted in Group 22 to be demoted to
>    MUST NOT.  Group 23 and 24 have been demoted to SHOULD NOT and are
>    expected to be further downgraded in the near future to MUST NOT.
>
>
> This is what deprecation looks like

Apologies. I did not read carefully enough. I blame jetlag. :-)

>
> Yoav
>
>
>
> On 18 January 2017 at 02:24, Phillip Hallam-Baker <phill@hallambaker.com>
> wrote:
>
>
> I have reviewed this document as part of the security directorate's
> ongoing effort to review all IETF documents being processed by the
> IESG.  These comments were written primarily for the benefit of the
> security area directors.  Document editors and WG chairs should treat
> these comments just like any other last call comments.
>
> STATUS: Ready with one minor typo.
>
>
> My personal taste would be to reduce the number of algorithms by half. But
> that is not practical given the history so this is the best we can do in the
> circumstances.
>
>
>
> Typos
>
> Sec 3.4
>
>   Group 22, 23 and 24 are MODP Groups with Prime Order Subgroups thater
>   are not safe-primes.  The seeds for these groups have not been
>
>
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>