Mark Andrews <ma...@isc.org> writes:

> We don’t log rsamd5 is disabled now ec or ed curves when they are not
> supported by the crypto provider. Why should rsasha1 based algs be
> special?

Because RSASHA1 validation still is a MUST in RFC8624? MD5 is and ED is
not.

I don't know if disabled EC curves is a real world problem, but
ECDSAP256SHA256 is also a MUST and should get the same treatment.

IMHO you should not allow the server to start up with a non-compliant
configuration without making sure the adminstrator is aware of the
problem.  A log warning is sort of a minimum.  Personally I'd prefer the
server to die by default.  It is unsuitable as a validating resolver and
forcing adminstrators to find that out the hard way is not very nice.


Bjørn
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