mac1.init(null, params);
else
mac1.init(new SecretKeySpec(kb, macName), params);
mac1.update(abc); // start with abc
mac2 = (Mac) mac1.clone(); // now clone it
ba1 = mac1.doFinal(in); // now finish both with in
ba2 = mac2.doFinal(in);
harness.check(Arrays.equals(ba1, ba2), "testCloneability("