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/*
* Copyright (c) 2023, 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 8297878
* @summary Generate large number of Secret Keys using same KEM
* @library /test/lib
* @run main/othervm -Djava.security.egd=file:/dev/urandom GenLargeNumberOfKeys
*/
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.util.Arrays;
import javax.crypto.KEM;
import javax.crypto.SecretKey;
import java.security.spec.ECGenParameterSpec;
import jdk.test.lib.Asserts;
public class GenLargeNumberOfKeys {
private static final int COUNT = 1000;
public static void main(String[] args) throws Exception {
KEM kem = KEM.getInstance("DHKEM");
testAlgo(kem, "X448", null);
testAlgo(kem, "EC", "secp521r1");
}
private static void testAlgo(KEM kem, String algo, String curveId) throws Exception {
KeyPair kp = genKeyPair(algo, curveId);
KEM.Encapsulator e = kem.newEncapsulator(kp.getPublic());
KEM.Decapsulator d = kem.newDecapsulator(kp.getPrivate());
for (int i = 0; i < COUNT; i++) {
test(e, d);
}
System.out.println(algo + ": test Successful");
}
private static KeyPair genKeyPair(String algo, String curveId) throws Exception {
KeyPairGenerator kpg = KeyPairGenerator.getInstance(algo);
if (curveId != null) {
kpg.initialize(new ECGenParameterSpec(curveId));
}
return kpg.generateKeyPair();
}
private static void test(KEM.Encapsulator e, KEM.Decapsulator d)
throws Exception {
KEM.Encapsulated enc = e.encapsulate();
SecretKey sk = enc.key();
Asserts.assertEQ(d.encapsulationSize(), enc.encapsulation().length);
Asserts.assertEQ(d.secretSize(), enc.key().getEncoded().length);
Asserts.assertTrue(Arrays.equals(d.decapsulate(enc.encapsulation()).getEncoded(),
sk.getEncoded()));
// Repeated calls to encapsulation() on Encapsulated object don't change anything
Asserts.assertTrue(Arrays.equals(d.decapsulate(enc.encapsulation()).getEncoded(),
sk.getEncoded()));
Asserts.assertTrue(Arrays.equals(d.decapsulate(enc.encapsulation()).getEncoded(),
enc.key().getEncoded()));
}
}
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