public void SignAndVerifyFromMessageTest()
{
var kp = PublicKeyAuth.GenerateKeyPair();
var signature = new PublicKeyAuth();
IBuffer data = CryptographicBuffer.ConvertStringToBinary("Hello, World!", BinaryStringEncoding.Utf8);
signature.Append(data);
var output = signature.GetValueAndReset(kp.Secret);
Assert.AreEqual(64, output.Length);
Assert.AreEqual(true, signature.GetValueAndVerify(output, kp.Public));
}