I do appreciate the discussion here, but the current issue we’re trying to address is the problem statement.
laura > On 29 Oct 2023, at 12:12, John R Levine <jo...@taugh.com> wrote: > >> Future proofing? The history of encryption is riddled with examples of >> overconfidence. > > Well, sure, and I would not be opposed to revisiting this issue in a decade. > > As Scott noted, approximately nobody handles ed25519 yet, and nobody will > until there is some reason to believe that RSA signatures are too weak. > Adding another five tons of steel to the door won't change that. > > And on the third hand, if something unexpected happens and RSA and ed25519 > both fail, why do you imagine Ed448 wouldn't fail too? If someone figures > out how to make large quantum computers, they're all toast and we'll have to > switch to PQC. > > R's, > John > >> On Fri, Oct 27, 2023 at 2:02 PM John Levine <jo...@taugh.com> wrote: >> >>> It appears that Scott Kitterman <skl...@kitterman.com> said: >>>> On October 27, 2023 2:56:30 PM UTC, "Murray S. Kucherawy" < >>> superu...@gmail.com> wrote: >>>>> On Sun, Oct 1, 2023 at 1:50 AM Jan Dušátko <jan= >>> 40dusatko....@dmarc.ietf.org> >>>>> wrote: >>>>> >>>>>> I would like to ask to consider the possibility of defining a DKIM >>>>>> signature using Ed448. [...] >>> >>>> My view is that more encryption algorithms are bad for interoperability. >>> For DKIM signing/verifying to work, senders >>>> and verifiers need a common algorithm. More choices make this more >>> complex to achieve. >>>> >>>> We standardized ed25119 as a hedge against unknown vulnerability in RSA. >>> ... >>> >>> Since we already have ed25519, why would we want ed448? If ed25519 is a >>> ten ton steel >>> door on our cardboard box, ed448 is a fifteen ton steel door. >>> >>> R's, >>> John >>> >>> _______________________________________________ >>> Ietf-dkim mailing list >>> Ietf-dkim@ietf.org >>> https://www.ietf.org/mailman/listinfo/ietf-dkim >>> >> > > Regards, > John Levine, jo...@taugh.com, Taughannock Networks, Trumansburg NY > Please consider the environment before reading this e-mail. https://jl.ly > > _______________________________________________ > Ietf-dkim mailing list > Ietf-dkim@ietf.org > https://www.ietf.org/mailman/listinfo/ietf-dkim -- The Delivery Expert Laura Atkins Word to the Wise la...@wordtothewise.com Delivery hints and commentary: http://wordtothewise.com/blog
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