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[TLS] Re: WG Last Call: draft-ietf-tls-mlkem-08 (Ends 2026-07-08)

Viktor Dukhovni <ietf-dane@dukhovni.org> Sat, 04 July 2026 04:48 UTC

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Date: Sat, 04 Jul 2026 14:48:16 +1000
From: Viktor Dukhovni <ietf-dane@dukhovni.org>
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Subject: [TLS] Re: WG Last Call: draft-ietf-tls-mlkem-08 (Ends 2026-07-08)
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On Fri, Jul 03, 2026 at 09:02:52PM -0700, Brian Resnik wrote:

> And yes, I know people did RSA-512 for a long time.

A very small minority still do.  Out of almost 27 million DNSSEC-signed
zones delegated from a public suffix, 308 have 512-bit RSA KSKs:

    https://stats.dnssec-tools.org/#/?dnssec_param_tab=2

down from 9,557 KSKs in Oct 2017 when the DANE/DNSSEC survey started.
Also at that time just over 67,000 ZSKs, 55,500 of which shared a single
512-bit RSA key managed by their hosting provider.

So, news that RSA-512 is no longer fit for purpose eventually reach
everyone who might care.  Now used by just 0.001% of signed zones.

-- 
    Viktor.  🇺🇦 Слава Україні!

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