Thanks for the explanation, that probably makes sense.
Thank you
Matt
From: Kyle Hamilton
Date: Monday, 21 November 2022 12:46
To: ORNEST Matej - Contractor
Cc: openssl-users
Subject: Re: X52219/X448 export public key coordinates
The reason has to do with the type of curve representation
The reason has to do with the type of curve representation. X25519 is
typically represented in (I believe, but I'm not an expert and I haven't
looked at the primary sources recently so take this with a grain of salt)
Montgomery form. Its digital signature counterpart Ed25519 uses the same
curve
Yeah, of course, sorry for the typo. I’ve already found a solution that seems
to be working by using EVP_PKEY_get_raw_public_key() for these types of curves.
I was confused why it’s not working with EC_KEY interfaces though it’s type of
elliptic curve. Then I found somewhere that it’s
X25519?
On Mon, Nov 14, 2022, 05:23 ORNEST Matej - Contractor via openssl-users <
openssl-users@openssl.org> wrote:
> Hi all,
>
>
>
> I need to implement support for X52219/X448 for DH key exchange (and
> Ed52219/Ed448 for DSA) elliptic curves in our project. I need to export
> public key for DH
