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Re: [Dcrup] I-D Action: draft-ietf-dcrup-dkim-crypto-03.txt

Eric Rescorla <ekr@rtfm.com> Sun, 02 July 2017 19:18 UTC

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From: Eric Rescorla <ekr@rtfm.com>
Date: Sun, 02 Jul 2017 12:18:09 -0700
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To: John R Levine <johnl@taugh.com>
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Subject: Re: [Dcrup] I-D Action: draft-ietf-dcrup-dkim-crypto-03.txt
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On Sat, Jul 1, 2017 at 8:41 PM, John R Levine <johnl@taugh.com> wrote:

> The point of the fingerprints was to make it easier to use long RSA keys.
>>
>> That may have been your point, but when I suggested it, my objective was
>> to
>> future proof the protocol against other algorithms with larger keys as
>> well.
>>
>
> I'm wondering how likely that is.
>

Given that (a) we already have algorithms that are bigger and (b)
post-quantum keys
might be quite a bit bigger, it seems unwise to design under the assumption
that it will
not happen.

-Ekr


>
> Regards,
> John Levine, johnl@taugh.com, Taughannock Networks, Trumansburg NY
> Please consider the environment before reading this e-mail. https://jl.ly
>

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