Support for curve25519 and curve448, RFC 7748

[drwetter]

Hi Peter,

just a marker for this two curves as e.g. Windows 2016 seems to support at curve25519 (ssllabs/ssllabs-scan#348)

At least the djb curve seems to in openssl 1.1.0 though.

IDs: http://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-8

I assume a backport is not doable that easy?

Cheers, Dirk

[PeterMosmans]

Hi @drwetter , thanks for the note. I'm going to check / verify the 'latest' (read: 1.1) ciphers shortly, but I'm afraid that backporting won't be an (easy) option....