@Test
  public void testAesSiv192() throws Exception {
    byte[] key = Random.randBytes(48);
    AesSiv siv;
    try {
      siv = new AesSiv(key);
    } catch (GeneralSecurityException ex) {
      System.out.println(
          "Skipping test: AES-SIV with 192 bit AES keys is not supported: " + ex.toString());
      return;
    }
    testEncryptionDecryption(siv, 5, 128, 20);
  }
Encrypt and decrypt concurrently with one DeterministicAead cipher.
java_src/src/test/java/com/google/crypto/tink/subtle/DaeadThreadSafetyTest.java