Can we disable diffie-hellman-group-exchange-sha1 by default?

[Yegor Ievlev]

That doesn't seem to be the case. See
https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-57pt1r4.pdf
(5.6.1 Comparable Algorithm Strengths)

On Fri, Feb 15, 2019 at 8:28 AM Darren Tucker <dtucker at dtucker.net> wrote:
>
> On Fri, 15 Feb 2019 at 16:00, Yegor Ievlev <koops1997 at gmail.com> wrote:
> > I don't think there is any point to generate so many moduli. Actually,
> > 3 moduli of sizes 2048, 3072 and 4096 seem like a sane choice.
>
> NIST SP 800-57 Part 1, on which the current group size selection code
> is based, puts a 4k group at a little over 128 bits of security.  This
> is why we generate larger groups (and request them, when using 192 and
> 256 bit ciphers).
>
> --
> Darren Tucker (dtucker at dtucker.net)
> GPG key 11EAA6FA / A86E 3E07 5B19 5880 E860  37F4 9357 ECEF 11EA A6FA (new)
>     Good judgement comes with experience. Unfortunately, the experience
> usually comes from bad judgement.