Why do we need the signal: what goes wrong if some validators insist on
ML-DSA-44 if they see a ML-DSA-44 DS?


On Mon, Jul 27, 2026 at 2:41 PM Shumon Huque <[email protected]> wrote:

> On Mon, Jul 27, 2026 at 8:16 AM Bas Westerbaan <[email protected]> wrote:
>
>>
>> On Mon, Jul 27, 2026 at 2:09 PM Shumon Huque <[email protected]> wrote:
>>
>>> [...] additional explicit signaling is likely needed for that, and it
>>> would be a painful slog to get the long tail of validators in the field
>>> upgraded to implement such an enhancement.
>>>
>>
>> What signalling would be required for the validator to insist on
>> ML-DSA-44 if it sees a DS for it?
>>
>
> We'd have to come up with a design. Most likely the signal would have to
> be encoded in the DS RRset (see the various "DS hack" proposals for various
> things in the past), or in a DNSKEY flag. (If we wait for DELEG, which may
> be too late, then a purpose built DELEG parameter could be designed).
>
> Shumon.
>
>
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