RFC8410 / RFC8037 incompatibility

Anders Rundgren <[email protected]>
Newsgroups gmane.ietf.x509
Message-ID <[email protected]> 
Hi Crypto Experts,

Please pardon my ignorance regarding curve25519, but I ran into problems [*] trying to recreate the sample certificate:
https://tools.ietf.org/html/rfc8410#section-10.2

Reading
https://tools.ietf.org/html/rfc8037#section-3.2
indicates that signing using an ECDH key MUST NOT be doable as well.

Personally I don't see any use of a self-signed encryption certificate so maybe this is just a bad example...kind of edge case.

Regards,
Anders

*] java.security.InvalidKeyException: cannot identify EdDSA private key
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