public void Ecdh(BigInt publicX, BigInt publicY, RandomNumberGenerator rng, out byte[] preMasterSecret, out Affine publicPoint)
{
var limbLen = (curveByteLen + 3) >> 2;
var priv = GenPriv(rng);
var serverPublic = new EllipticCurve.Projective()
{
x = publicX, y = publicY, z = new EllipticCurve.BigInt(1, limbLen)
};
var commonSecretProj = EcMult(priv, serverPublic);
var commonSecretAff = EcAffinify(commonSecretProj);
serverPublic.Clear();
commonSecretProj.Clear();
var g = new EllipticCurve.Projective()
{
x = xg, y = yg, z = new EllipticCurve.BigInt(1, limbLen)
};
var pubProj = EcMult(priv, g);
var pubAff = EcAffinify(pubProj);
priv.Clear();
pubProj.Clear();
preMasterSecret = commonSecretAff.x.ExportToBigEndian(curveByteLen);
commonSecretAff.Clear();
publicPoint = pubAff;
}
public void Ecdh(BigInt publicX, BigInt publicY, RandomNumberGenerator rng, out byte[] preMasterSecret, out Affine publicPoint)
{
var limbLen = (curveByteLen + 3) >> 2;
var priv = GenPriv(rng);
var serverPublic = new EllipticCurve.Projective() { x = publicX, y = publicY, z = new EllipticCurve.BigInt(1, limbLen) };
var commonSecretProj = EcMult(priv, serverPublic);
var commonSecretAff = EcAffinify(commonSecretProj);
serverPublic.Clear();
commonSecretProj.Clear();
var g = new EllipticCurve.Projective() { x = xg, y = yg, z = new EllipticCurve.BigInt(1, limbLen) };
var pubProj = EcMult(priv, g);
var pubAff = EcAffinify(pubProj);
priv.Clear();
pubProj.Clear();
preMasterSecret = commonSecretAff.x.ExportToBigEndian(curveByteLen);
commonSecretAff.Clear();
publicPoint = pubAff;
}
