Re: [IPsec] John Scudder's No Objection on draft-ietf-ipsecme-ikev2-multiple-ke-10: (with COMMENT)

CJ Tjhai <cjt@post-quantum.com> Wed, 30 November 2022 23:19 UTC

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From: CJ Tjhai <cjt@post-quantum.com>
Date: Wed, 30 Nov 2022 23:18:48 +0000
Message-ID: <CANs=h-UwwymvY0yzFtpgWGx-nxPD_H59Bg=STGe3rVc+nRLM0w@mail.gmail.com>
To: John Scudder <jgs@juniper.net>
Cc: The IESG <iesg@ietf.org>, draft-ietf-ipsecme-ikev2-multiple-ke@ietf.org, ipsecme-chairs@ietf.org, ipsec@ietf.org, kivinen@iki.fi
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Subject: Re: [IPsec] John Scudder's No Objection on draft-ietf-ipsecme-ikev2-multiple-ke-10: (with COMMENT)
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Hi John,

I've just realised that Paul Wouters has also commented on the same
sentence and he has suggested the following:

A hybrid post-quantum algorithm to be introduced along with
the well-established primitives addresses this concern, since the overall
security is at least as strong as each individual primitive.

This has been committed into our latest PR. Hope this works with you.

Cheers,
CJ


On Wed, 30 Nov 2022 at 23:11, CJ Tjhai <cjt@post-quantum.com> wrote:

> Hi John,
>
> Many thanks for your review. Please see the response inline below.
>
> Best wishes,
> CJ
>
>
> On Wed, 30 Nov 2022 at 20:56, John Scudder via Datatracker <
> noreply@ietf.org> wrote:
>
>> John Scudder has entered the following ballot position for
>> draft-ietf-ipsecme-ikev2-multiple-ke-10: No Objection
>>
>>
>>
> [snipped]
>
> ----------------------------------------------------------------------
>> COMMENT:
>> ----------------------------------------------------------------------
>>
>> Thanks for this. I have just one comment, about what's probably just a
>> typographical error but it interfered with my understanding of the point
>> in
>> question so it seemed worth mentioning.
>>
>> ### Section 2, (2) is missing a verb, but what verb?
>>
>> ```
>> Hybrid. Currently, there does not exist a post-quantum key exchange that
>> is
>> trusted at the level that (EC)DH is trusted against conventional
>> (non-quantum)
>> adversaries. A hybrid post-quantum algorithm to be introduced next to
>> well-established primitives, since the overall security is at least as
>> strong
>> as each individual primitive. ```
>>
>> The second sentence seems, at minimum, to be missing a verb. For instance
>> you
>> could interpolate "needs" between "algorithm" and "to be", but I'm not
>> sure if
>> that properly captures your intended meaning.
>>
>
> I see your point, perhaps we should rephrase the sentence to the following:
>
> Combining a post-quantum algorithm next to well-established primitives
> in a hybrid arrangement, would alleviate this concern since the overall
> security
> is at least as strong as each individual primitive.
>
> Would this work with you?
>

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