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Re: [IPsec] replacing PSKs: CFRG and PAKE

Paul Wouters <paul@nohats.ca> Wed, 12 December 2018 01:35 UTC

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Date: Tue, 11 Dec 2018 20:35:23 -0500
From: Paul Wouters <paul@nohats.ca>
To: Valery Smyslov <smyslov.ietf@gmail.com>
cc: 'Michael Richardson' <mcr+ietf@sandelman.ca>, 'Nico Williams' <nico@cryptonector.com>, ipsec@ietf.org
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Subject: Re: [IPsec] replacing PSKs: CFRG and PAKE
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On Tue, 11 Dec 2018, Valery Smyslov wrote:

>> What I heard from the IPsecME record was that many in the room
>> felt that this was where ther was a weakness.
>
> I see this as a social issue, not a technical one. We can't prevent
> administrators from being careless, either with PSKs or with passwords.

We can make more secure deployments easier.

If the only change on the site-to-site config is to change the keyword
"psk" to "pake" and that prevents offline dictionary attacks, that's an
easy win.

I care a little less for group psk's because well, it is a group so even
a pake won't buy us that much extra if dozens or thousands of people
have the pake secret.

Paul

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