	public void testKeySizeForUnknownCurve() {

		try {
			new ECKey.Builder(new ECKey.Curve("unknown"), ExampleKeyP256.X, ExampleKeyP256.Y).build().size();
			fail();
		} catch (UnsupportedOperationException e) {
			assertEquals("Couldn't determine field size for curve unknown", e.getMessage());
		}
	}
The software does not verify, or incorrectly verifies, the cryptographic signature for data.