[openssl-users] Creating an X25519-based Certificate

[Salz, Rich]

> How do I do this? Using the OpenSSL command line tool, a certificate request must be self-signed, but the X25519 elliptic curve (newly supported in version 1.1.0), doesn't do signature, it can only be used for key exchange.

You cannot do it.

You should look at the CFRG documents on Ed25519.