On Tue, Aug 31, 2021 at 02:13:35PM +1000, Mark Andrews <[email protected]> wrote:

> The rules for what get signed by what are per algorithm.  Additionally the
> SEP bit is hint to the signer as to what is desired.  Named has controls to
> say whether to pay attention to the SEP bit or not.  Additionally it will
> override those controls to pay attention to the SEP but if it believes that
> the zone won’t be correctly signed if it paid attention to the SEP bit.
> 
> People have created zones where one algorithm has keys with and without the 
> SEP
> bit for one algorithm but for a second algorithm there are only keys with 
> (without)
> the SEP bit.  If the signer has been told to honour the SEP bit then for the 
> first
> algorithm it will be honoured and for the second algorithm the instruction 
> will
> be overridden.
> 
> See dnssec-dnskey-kskonly, update-check-ksk and the keys sub-clause of
> dnssec-policy.

Thanks.

cheers,
raf

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