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/*
* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* 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).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
* @bug 8051408 8158534
* @summary Make sure DrbgParameters coded as specified
* @library /test/lib
* @build jdk.test.lib.Asserts
* @run main DrbgParametersSpec
*/
import jdk.test.lib.Asserts;
import java.security.DrbgParameters;
import java.util.Arrays;
import static java.security.DrbgParameters.Capability.*;
public class DrbgParametersSpec {
public static void main(String args[]) throws Exception {
byte[] p, np1, np2;
// Capability
Asserts.assertTrue(PR_AND_RESEED.supportsPredictionResistance());
Asserts.assertTrue(PR_AND_RESEED.supportsReseeding());
Asserts.assertFalse(RESEED_ONLY.supportsPredictionResistance());
Asserts.assertTrue(RESEED_ONLY.supportsReseeding());
Asserts.assertFalse(NONE.supportsPredictionResistance());
Asserts.assertFalse(NONE.supportsReseeding());
// Instantiation
p = "Instantiation".getBytes();
DrbgParameters.Instantiation ins = DrbgParameters
.instantiation(192, RESEED_ONLY, p);
Asserts.assertTrue(ins.getStrength() == 192);
Asserts.assertTrue(ins.getCapability() == RESEED_ONLY);
np1 = ins.getPersonalizationString();
np2 = ins.getPersonalizationString();
// Getter outputs have same content but not the same object
Asserts.assertTrue(Arrays.equals(np1, p));
Asserts.assertTrue(Arrays.equals(np2, p));
Asserts.assertNE(np1, np2);
// Changes to original input has no affect on object
p[0] = 'X';
np2 = ins.getPersonalizationString();
Asserts.assertTrue(Arrays.equals(np1, np2));
ins = DrbgParameters.instantiation(-1, NONE, null);
Asserts.assertNull(ins.getPersonalizationString());
iae(() -> DrbgParameters.instantiation(-2, NONE, null));
npe(() -> DrbgParameters.instantiation(-1, null, null));
// NextBytes
p = "NextBytes".getBytes();
DrbgParameters.NextBytes nb = DrbgParameters
.nextBytes(192, true, p);
Asserts.assertTrue(nb.getStrength() == 192);
Asserts.assertTrue(nb.getPredictionResistance());
np1 = nb.getAdditionalInput();
np2 = nb.getAdditionalInput();
// Getter outputs have same content but not the same object
Asserts.assertTrue(Arrays.equals(np1, p));
Asserts.assertTrue(Arrays.equals(np2, p));
Asserts.assertNE(np1, np2);
// Changes to original input has no affect on object
p[0] = 'X';
np2 = nb.getAdditionalInput();
Asserts.assertTrue(Arrays.equals(np1, np2));
iae(() -> DrbgParameters.nextBytes(-2, false, null));
// Reseed
p = "Reseed".getBytes();
DrbgParameters.Reseed rs = DrbgParameters
.reseed(true, p);
Asserts.assertTrue(rs.getPredictionResistance());
np1 = rs.getAdditionalInput();
np2 = rs.getAdditionalInput();
// Getter outputs have same content but not the same object
Asserts.assertTrue(Arrays.equals(np1, p));
Asserts.assertTrue(Arrays.equals(np2, p));
Asserts.assertNE(np1, np2);
// Changes to original input has no affect on object
p[0] = 'X';
np2 = rs.getAdditionalInput();
Asserts.assertTrue(Arrays.equals(np1, np2));
}
static void iae(RunnableWithException r) throws Exception {
checkException(r, IllegalArgumentException.class);
}
static void npe(RunnableWithException r) throws Exception {
checkException(r, NullPointerException.class);
}
interface RunnableWithException {
void run() throws Exception;
}
static void checkException(RunnableWithException r, Class ex)
throws Exception {
try {
r.run();
} catch (Exception e) {
if (ex.isAssignableFrom(e.getClass())) {
return;
}
throw e;
}
throw new Exception("No exception thrown");
}
}
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