Add RFC 8032 / RFC 7748 (Elliptic Curves for Security) to crypto.getCurves()

[paragonie-scott]

Run this code (I'm using Node.js 12.13.0 from deb.nodesource.com):

const crypto = require('crypto');
console.log(crypto.getCurves());

Absent from this list are the curves recommended in RFC 7748 (Elliptic Curves for Security). Additionally, RFC 8032 (EdDSA) is not supported either.

For ECDH, I would expect to see x25519 and x448 in the list.
For signatures, I would expect to see ed25519 and ed448 as well.

Note: These types are documented elsewhere:

• https://nodejs.org/api/crypto.html#crypto_keyobject_asymmetrickeytype
• https://nodejs.org/api/crypto.html#crypto_crypto_generatekeypair_type_options_callback

[ChALkeR]

@paragonie-scott That basically exposes OpenSSL EC_get_builtin_curves, and should probably match with openssl ecparam -list_curves for the OpenSSL version used.

[paragonie-scott]

Ah, this looks to be a known behavior of OpenSSL. openssl/openssl#8880 (comment)

Okay, not much we can do here then. :(

[ChALkeR]

@nodejs/documentation Anything here that should be mentioned in the docs?