private byte[] NewKey(int keyLength, object key, IDictionary <string, string> header)
{
var recieverPubKey = Ensure.Type <CngKey>(key, "EcdhKeyManagement alg expects key to be of CngKey type.");
EccKey ephemeral = EccKey.Generate(recieverPubKey);
IDictionary <string, string> epk = new Dictionary <string, string>();
epk["kty"] = "EC";
epk["x"] = Base64Url.Encode(ephemeral.X);
epk["y"] = Base64Url.Encode(ephemeral.Y);
epk["crv"] = Curve(recieverPubKey);
//header["epk"] = epk;
//return DeriveKey(header, keyLength, recieverPubKey, ephemeral.Key);
return(null);
}
