id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
885	Add support for multiple elliptic curves	Commenter123@…		"Curve25519 is about to land in Chrome 50: https://www.chromestatus.com/feature/5682529109540864

nginx currently does not allow to use more than one curve.
We can't use Curve25519 as a lot of clients will not support it.

Allowing several curves with server preference would help to improve security and compatibility. 

Examples:
ssl_ecdh_curve ""brainpoolP512r1:secp521r1:prime256v1"";
ssl_prefer_server_ecdh_curve on;
or
ssl_ecdh_curve brainpoolP512r1 secp521r1 prime256v1;
ssl_prefer_server_ecdh_curve off;

Also see this request: https://forum.nginx.org/read.php?10,263871,263871"	enhancement	closed	major		nginx-core	1.9.x	fixed	tls,elliptic,curve,ecc,ec		--	--