public static void TestAllZeros(string privateKey, string publicKey)
{
var a = new X25519();
var pk = PublicKey.Import(a, publicKey.DecodeHex(), KeyBlobFormat.RawPublicKey);
using (var k = Key.Import(a, privateKey.DecodeHex(), KeyBlobFormat.RawPrivateKey))
{
Assert.False(a.TryAgree(k, pk, out SharedSecret s));
Assert.Null(s);
Assert.Throws <CryptographicException>(() => a.Agree(k, pk));
}
}
