RFC8410 (in)compatibility

[Anders Rundgren]

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

It seems that the certificate is signed with a key intended for ECDH.
Question: is Java's "Signature" object supposed to accept X25519 keys?

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 Rundgren

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