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/*
* Copyright (c) 2024, 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 8331008
* @library /test/lib /test/jdk/security/unsignedjce
* @build java.base/javax.crypto.ProviderVerifier
* @run main/othervm KDFDelayedProviderThreadingTest
* @summary delayed provider selection threading test
* @enablePreview
*/
import jdk.test.lib.Asserts;
import javax.crypto.KDF;
import javax.crypto.KDFParameters;
import javax.crypto.KDFSpi;
import javax.crypto.SecretKey;
import javax.crypto.spec.HKDFParameterSpec;
import java.security.InvalidAlgorithmParameterException;
import java.security.Provider;
import java.security.Security;
import java.security.spec.AlgorithmParameterSpec;
import java.util.Arrays;
public class KDFDelayedProviderThreadingTest {
/// This number of iterations is enough to see a case where the threads
/// arrange themselves such that both `deriveData` attempts cause "ERROR",
/// which is still a passing case.
static final int ITERATIONS = 10000;
static int threadOrderReversalCounter = 0;
static final String ERROR = "ERROR";
static volatile String out;
static final HKDFParameterSpec input
= HKDFParameterSpec.ofExtract().extractOnly();
static String derive(KDF kdf) {
try {
return Arrays.toString(kdf.deriveData(input));
} catch (Exception e) {
return ERROR;
}
}
public static void main(String[] args) throws Exception {
Security.insertProviderAt(new P(), 1);
for (int i = 0; i < ITERATIONS; i++) {
test();
}
// If the value of threadOrderReversalCounter is consistently zero,
// then this test may need to be adjusted for newer hardware to ensure
// a thorough test. This didn't seem fitting for a check, such as
// `Asserts.assertTrue(threadOrderReversalCounter > 0);`, since we
// may not want to start failing the test right away when running on
// better hardware someday.
System.out.println("Also tested atypical threading condition "
+ threadOrderReversalCounter + "/" + ITERATIONS
+ " iterations (depends on hardware specs/utilization).");
}
static void test() throws Exception {
var k = KDF.getInstance("HKDF-SHA256");
var t1 = new Thread(() -> out = derive(k));
var t2 = new Thread(() -> k.getProviderName());
t1.start();
t2.start();
t1.join();
t2.join();
String out2 = derive(k);
Asserts.assertEquals(out, out2);
if (out.length() < 10) { // "error"
threadOrderReversalCounter++;
}
}
public static class P extends Provider {
public P() {
super("ME", "1", "ME");
put("KDF.HKDF-SHA256", K.class.getName());
}
}
public static class K extends KDFSpi {
public K(KDFParameters p) throws InvalidAlgorithmParameterException {
super(p);
}
@Override
protected KDFParameters engineGetParameters() {
return null;
}
@Override
protected SecretKey engineDeriveKey(String alg,
AlgorithmParameterSpec derivationSpec)
throws InvalidAlgorithmParameterException {
throw new InvalidAlgorithmParameterException();
}
@Override
protected byte[] engineDeriveData(AlgorithmParameterSpec derivationSpec)
throws InvalidAlgorithmParameterException {
throw new InvalidAlgorithmParameterException();
}
}
}
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