@Test
  public void testEcdsaDer2Ieee() throws Exception {
    for (EcdsaIeeeDer test : ieeeDerTestVector) {
      assertArrayEquals(
          Hex.decode(test.hexIeee),
          EllipticCurves.ecdsaDer2Ieee(Hex.decode(test.hexDer), test.hexIeee.length() / 2));
    }
  }
A class to store a pair of valid Ecdsa signature in IEEE_P1363 and DER format.
java_src/src/test/java/com/google/crypto/tink/subtle/EllipticCurvesTest.java