/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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*/
/*
* @test
* @bug 0000000
* @summary MacClone
* @author Jan Luehe
*/
import javax.crypto.*;
public class MacClone {
public static void main(String[] args) throws Exception {
//
// Clone uninitialized Mac object
//
Mac mac = Mac.getInstance("HmacSHA1", "SunJCE");
Mac macClone = (Mac)mac.clone();
System.out.println(macClone.getProvider().toString());
System.out.println(macClone.getAlgorithm());
boolean thrown = false;
try {
macClone.update((byte)0x12);
} catch (IllegalStateException ise) {
thrown = true;
}
if (!thrown) {
throw new Exception("Expected IllegalStateException not thrown");
}
//
// Clone initialized Mac object
//
KeyGenerator kgen = KeyGenerator.getInstance("DES");
SecretKey skey = kgen.generateKey();
mac = Mac.getInstance("HmacSHA1");
mac.init(skey);
macClone = (Mac)mac.clone();
System.out.println(macClone.getProvider().toString());
System.out.println(macClone.getAlgorithm());
mac.update((byte)0x12);
macClone.update((byte)0x12);
byte[] macFinal = mac.doFinal();
byte[] macCloneFinal = macClone.doFinal();
if (!java.util.Arrays.equals(macFinal, macCloneFinal)) {
throw new Exception("MAC results are different");
}
}
}